From 664c869f7749da96bbea7307beb043dfe52593c5 Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Sun, 28 Jul 2019 23:23:18 -0400 Subject: lib: Remove unused stm32f1 "hal" code Now that the stm32f1 code has been merged into the stm32 code, there is no longer a need to use the upstream stm32f1 "hal" code. Signed-off-by: Kevin O'Connor --- lib/stm32f1/hal/source/stm32f1xx_hal_i2c.c | 7187 ---------------------------- 1 file changed, 7187 deletions(-) delete mode 100644 lib/stm32f1/hal/source/stm32f1xx_hal_i2c.c (limited to 'lib/stm32f1/hal/source/stm32f1xx_hal_i2c.c') diff --git a/lib/stm32f1/hal/source/stm32f1xx_hal_i2c.c b/lib/stm32f1/hal/source/stm32f1xx_hal_i2c.c deleted file mode 100644 index 6e74e699..00000000 --- a/lib/stm32f1/hal/source/stm32f1xx_hal_i2c.c +++ /dev/null @@ -1,7187 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f1xx_hal_i2c.c - * @author MCD Application Team - * @brief I2C HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of the Inter Integrated Circuit (I2C) peripheral: - * + Initialization and de-initialization functions - * + IO operation functions - * + Peripheral State, Mode and Error functions - * - @verbatim - ============================================================================== - ##### How to use this driver ##### - ============================================================================== - [..] - The I2C HAL driver can be used as follows: - - (#) Declare a I2C_HandleTypeDef handle structure, for example: - I2C_HandleTypeDef hi2c; - - (#)Initialize the I2C low level resources by implementing the @ref HAL_I2C_MspInit() API: - (##) Enable the I2Cx interface clock - (##) I2C pins configuration - (+++) Enable the clock for the I2C GPIOs - (+++) Configure I2C pins as alternate function open-drain - (##) NVIC configuration if you need to use interrupt process - (+++) Configure the I2Cx interrupt priority - (+++) Enable the NVIC I2C IRQ Channel - (##) DMA Configuration if you need to use DMA process - (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive channel - (+++) Enable the DMAx interface clock using - (+++) Configure the DMA handle parameters - (+++) Configure the DMA Tx or Rx channel - (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle - (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on - the DMA Tx or Rx channel - - (#) Configure the Communication Speed, Duty cycle, Addressing mode, Own Address1, - Dual Addressing mode, Own Address2, General call and Nostretch mode in the hi2c Init structure. - - (#) Initialize the I2C registers by calling the @ref HAL_I2C_Init(), configures also the low level Hardware - (GPIO, CLOCK, NVIC...etc) by calling the customized @ref HAL_I2C_MspInit() API. - - (#) To check if target device is ready for communication, use the function @ref HAL_I2C_IsDeviceReady() - - (#) For I2C IO and IO MEM operations, three operation modes are available within this driver : - - *** Polling mode IO operation *** - ================================= - [..] - (+) Transmit in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Transmit() - (+) Receive in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Receive() - (+) Transmit in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Transmit() - (+) Receive in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Receive() - - *** Polling mode IO MEM operation *** - ===================================== - [..] - (+) Write an amount of data in blocking mode to a specific memory address using @ref HAL_I2C_Mem_Write() - (+) Read an amount of data in blocking mode from a specific memory address using @ref HAL_I2C_Mem_Read() - - - *** Interrupt mode IO operation *** - =================================== - [..] - (+) Transmit in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Transmit_IT() - (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback() - (+) Receive in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Receive_IT() - (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback() - (+) Transmit in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Transmit_IT() - (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback() - (+) Receive in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Receive_IT() - (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback() - (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() - (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT() - (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback() - - *** Interrupt mode or DMA mode IO sequential operation *** - ========================================================== - [..] - (@) These interfaces allow to manage a sequential transfer with a repeated start condition - when a direction change during transfer - [..] - (+) A specific option field manage the different steps of a sequential transfer - (+) Option field values are defined through @ref I2C_XferOptions_definition and are listed below: - (++) I2C_FIRST_AND_LAST_FRAME: No sequential usage, functionnal is same as associated interfaces in no sequential mode - (++) I2C_FIRST_FRAME: Sequential usage, this option allow to manage a sequence with start condition, address - and data to transfer without a final stop condition - (++) I2C_FIRST_AND_NEXT_FRAME: Sequential usage (Master only), this option allow to manage a sequence with start condition, address - and data to transfer without a final stop condition, an then permit a call the same master sequential interface - several times (like @ref HAL_I2C_Master_Seq_Transmit_IT() then @ref HAL_I2C_Master_Seq_Transmit_IT() - or @ref HAL_I2C_Master_Seq_Transmit_DMA() then @ref HAL_I2C_Master_Seq_Transmit_DMA()) - (++) I2C_NEXT_FRAME: Sequential usage, this option allow to manage a sequence with a restart condition, address - and with new data to transfer if the direction change or manage only the new data to transfer - if no direction change and without a final stop condition in both cases - (++) I2C_LAST_FRAME: Sequential usage, this option allow to manage a sequance with a restart condition, address - and with new data to transfer if the direction change or manage only the new data to transfer - if no direction change and with a final stop condition in both cases - (++) I2C_LAST_FRAME_NO_STOP: Sequential usage (Master only), this option allow to manage a restart condition after several call of the same master sequential - interface several times (link with option I2C_FIRST_AND_NEXT_FRAME). - Usage can, transfer several bytes one by one using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME) - or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME) - or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME) - or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME). - Then usage of this option I2C_LAST_FRAME_NO_STOP at the last Transmit or Receive sequence permit to call the oposite interface Receive or Transmit - without stopping the communication and so generate a restart condition. - (++) I2C_OTHER_FRAME: Sequential usage (Master only), this option allow to manage a restart condition after each call of the same master sequential - interface. - Usage can, transfer several bytes one by one with a restart with slave address between each bytes using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME) - or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME) - or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME) - or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME). - Then usage of this option I2C_OTHER_AND_LAST_FRAME at the last frame to help automatic generation of STOP condition. - - (+) Differents sequential I2C interfaces are listed below: - (++) Sequential transmit in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Transmit_IT() - or using @ref HAL_I2C_Master_Seq_Transmit_DMA() - (+++) At transmission end of current frame transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback() - (++) Sequential receive in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Receive_IT() - or using @ref HAL_I2C_Master_Seq_Receive_DMA() - (+++) At reception end of current frame transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback() - (++) Abort a master IT or DMA I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT() - (+++) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback() - (++) Enable/disable the Address listen mode in slave I2C mode using @ref HAL_I2C_EnableListen_IT() @ref HAL_I2C_DisableListen_IT() - (+++) When address slave I2C match, @ref HAL_I2C_AddrCallback() is executed and user can - add his own code to check the Address Match Code and the transmission direction request by master (Write/Read). - (+++) At Listen mode end @ref HAL_I2C_ListenCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_ListenCpltCallback() - (++) Sequential transmit in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Transmit_IT() - or using @ref HAL_I2C_Slave_Seq_Transmit_DMA() - (+++) At transmission end of current frame transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback() - (++) Sequential receive in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Receive_IT() - or using @ref HAL_I2C_Slave_Seq_Receive_DMA() - (+++) At reception end of current frame transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback() - (++) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() - - *** Interrupt mode IO MEM operation *** - ======================================= - [..] - (+) Write an amount of data in non-blocking mode with Interrupt to a specific memory address using - @ref HAL_I2C_Mem_Write_IT() - (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback() - (+) Read an amount of data in non-blocking mode with Interrupt from a specific memory address using - @ref HAL_I2C_Mem_Read_IT() - (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback() - (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() - - *** DMA mode IO operation *** - ============================== - [..] - (+) Transmit in master mode an amount of data in non-blocking mode (DMA) using - @ref HAL_I2C_Master_Transmit_DMA() - (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback() - (+) Receive in master mode an amount of data in non-blocking mode (DMA) using - @ref HAL_I2C_Master_Receive_DMA() - (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback() - (+) Transmit in slave mode an amount of data in non-blocking mode (DMA) using - @ref HAL_I2C_Slave_Transmit_DMA() - (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback() - (+) Receive in slave mode an amount of data in non-blocking mode (DMA) using - @ref HAL_I2C_Slave_Receive_DMA() - (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback() - (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() - (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT() - (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback() - - *** DMA mode IO MEM operation *** - ================================= - [..] - (+) Write an amount of data in non-blocking mode with DMA to a specific memory address using - @ref HAL_I2C_Mem_Write_DMA() - (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback() - (+) Read an amount of data in non-blocking mode with DMA from a specific memory address using - @ref HAL_I2C_Mem_Read_DMA() - (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback() - (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback() - - - *** I2C HAL driver macros list *** - ================================== - [..] - Below the list of most used macros in I2C HAL driver. - - (+) @ref __HAL_I2C_ENABLE: Enable the I2C peripheral - (+) @ref __HAL_I2C_DISABLE: Disable the I2C peripheral - (+) @ref __HAL_I2C_GET_FLAG: Checks whether the specified I2C flag is set or not - (+) @ref __HAL_I2C_CLEAR_FLAG: Clear the specified I2C pending flag - (+) @ref __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt - (+) @ref __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt - - *** Callback registration *** - ============================================= - [..] - The compilation flag USE_HAL_I2C_REGISTER_CALLBACKS when set to 1 - allows the user to configure dynamically the driver callbacks. - Use Functions @ref HAL_I2C_RegisterCallback() or @ref HAL_I2C_RegisterAddrCallback() - to register an interrupt callback. - [..] - Function @ref HAL_I2C_RegisterCallback() allows to register following callbacks: - (+) MasterTxCpltCallback : callback for Master transmission end of transfer. - (+) MasterRxCpltCallback : callback for Master reception end of transfer. - (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer. - (+) SlaveRxCpltCallback : callback for Slave reception end of transfer. - (+) ListenCpltCallback : callback for end of listen mode. - (+) MemTxCpltCallback : callback for Memory transmission end of transfer. - (+) MemRxCpltCallback : callback for Memory reception end of transfer. - (+) ErrorCallback : callback for error detection. - (+) AbortCpltCallback : callback for abort completion process. - (+) MspInitCallback : callback for Msp Init. - (+) MspDeInitCallback : callback for Msp DeInit. - This function takes as parameters the HAL peripheral handle, the Callback ID - and a pointer to the user callback function. - [..] - For specific callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_RegisterAddrCallback(). - [..] - Use function @ref HAL_I2C_UnRegisterCallback to reset a callback to the default - weak function. - @ref HAL_I2C_UnRegisterCallback takes as parameters the HAL peripheral handle, - and the Callback ID. - This function allows to reset following callbacks: - (+) MasterTxCpltCallback : callback for Master transmission end of transfer. - (+) MasterRxCpltCallback : callback for Master reception end of transfer. - (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer. - (+) SlaveRxCpltCallback : callback for Slave reception end of transfer. - (+) ListenCpltCallback : callback for end of listen mode. - (+) MemTxCpltCallback : callback for Memory transmission end of transfer. - (+) MemRxCpltCallback : callback for Memory reception end of transfer. - (+) ErrorCallback : callback for error detection. - (+) AbortCpltCallback : callback for abort completion process. - (+) MspInitCallback : callback for Msp Init. - (+) MspDeInitCallback : callback for Msp DeInit. - [..] - For callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_UnRegisterAddrCallback(). - [..] - By default, after the @ref HAL_I2C_Init() and when the state is @ref HAL_I2C_STATE_RESET - all callbacks are set to the corresponding weak functions: - examples @ref HAL_I2C_MasterTxCpltCallback(), @ref HAL_I2C_MasterRxCpltCallback(). - Exception done for MspInit and MspDeInit functions that are - reset to the legacy weak functions in the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit() only when - these callbacks are null (not registered beforehand). - If MspInit or MspDeInit are not null, the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit() - keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state. - [..] - Callbacks can be registered/unregistered in @ref HAL_I2C_STATE_READY state only. - Exception done MspInit/MspDeInit functions that can be registered/unregistered - in @ref HAL_I2C_STATE_READY or @ref HAL_I2C_STATE_RESET state, - thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit. - Then, the user first registers the MspInit/MspDeInit user callbacks - using @ref HAL_I2C_RegisterCallback() before calling @ref HAL_I2C_DeInit() - or @ref HAL_I2C_Init() function. - [..] - When the compilation flag USE_HAL_I2C_REGISTER_CALLBACKS is set to 0 or - not defined, the callback registration feature is not available and all callbacks - are set to the corresponding weak functions. - - - *** I2C Workarounds linked to Silicon Limitation *** - ==================================================== - [..] - Below the list of all silicon limitations implemented for HAL on STM32F1xx product. - (@) See ErrataSheet to know full silicon limitation list of your product. - - (+) Workarounds Implemented inside I2C HAL Driver - (++) Wrong data read into data register (Polling and Interrupt mode) - (++) Start cannot be generated after a misplaced Stop - (++) Some software events must be managed before the current byte is being transferred: - Workaround: Use DMA in general, except when the Master is receiving a single byte. - For Interupt mode, I2C should have the highest priority in the application. - (++) Mismatch on the "Setup time for a repeated Start condition" timing parameter: - Workaround: Reduce the frequency down to 88 kHz or use the I2C Fast-mode if - supported by the slave. - (++) Data valid time (tVD;DAT) violated without the OVR flag being set: - Workaround: If the slave device allows it, use the clock stretching mechanism - by programming NoStretchMode = I2C_NOSTRETCH_DISABLE in @ref HAL_I2C_Init. - - [..] - (@) You can refer to the I2C HAL driver header file for more useful macros - - @endverbatim - ****************************************************************************** - * @attention - * - *

© Copyright (c) 2016 STMicroelectronics. - * All rights reserved.

- * - * This software component is licensed by ST under BSD 3-Clause license, - * the "License"; You may not use this file except in compliance with the - * License. You may obtain a copy of the License at: - * opensource.org/licenses/BSD-3-Clause - * - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "stm32f1xx_hal.h" - -/** @addtogroup STM32F1xx_HAL_Driver - * @{ - */ - -/** @defgroup I2C I2C - * @brief I2C HAL module driver - * @{ - */ - -#ifdef HAL_I2C_MODULE_ENABLED - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -/** @addtogroup I2C_Private_Define - * @{ - */ -#define I2C_TIMEOUT_FLAG 35U /*!< Timeout 35 ms */ -#define I2C_TIMEOUT_BUSY_FLAG 25U /*!< Timeout 25 ms */ -#define I2C_NO_OPTION_FRAME 0xFFFF0000U /*!< XferOptions default value */ - -/* Private define for @ref PreviousState usage */ -#define I2C_STATE_MSK ((uint32_t)((uint32_t)((uint32_t)HAL_I2C_STATE_BUSY_TX | (uint32_t)HAL_I2C_STATE_BUSY_RX) & (uint32_t)(~((uint32_t)HAL_I2C_STATE_READY)))) /*!< Mask State define, keep only RX and TX bits */ -#define I2C_STATE_NONE ((uint32_t)(HAL_I2C_MODE_NONE)) /*!< Default Value */ -#define I2C_STATE_MASTER_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy TX, combinaison of State LSB and Mode enum */ -#define I2C_STATE_MASTER_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy RX, combinaison of State LSB and Mode enum */ -#define I2C_STATE_SLAVE_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy TX, combinaison of State LSB and Mode enum */ -#define I2C_STATE_SLAVE_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy RX, combinaison of State LSB and Mode enum */ - -/** - * @} - */ - -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ - -/** @defgroup I2C_Private_Functions I2C Private Functions - * @{ - */ -/* Private functions to handle DMA transfer */ -static void I2C_DMAXferCplt(DMA_HandleTypeDef *hdma); -static void I2C_DMAError(DMA_HandleTypeDef *hdma); -static void I2C_DMAAbort(DMA_HandleTypeDef *hdma); - -static void I2C_ITError(I2C_HandleTypeDef *hi2c); - -static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart); - -/* Private functions to handle flags during polling transfer */ -static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_WaitOnTXEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_WaitOnBTFFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart); -static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c); - -/* Private functions for I2C transfer IRQ handler */ -static void I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c); -static void I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c); -static void I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c); -static void I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c); -static void I2C_Master_SB(I2C_HandleTypeDef *hi2c); -static void I2C_Master_ADD10(I2C_HandleTypeDef *hi2c); -static void I2C_Master_ADDR(I2C_HandleTypeDef *hi2c); - -static void I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c); -static void I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c); -static void I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c); -static void I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c); -static void I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c, uint32_t IT2Flags); -static void I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c); -static void I2C_Slave_AF(I2C_HandleTypeDef *hi2c); - -/* Private function to Convert Specific options */ -static void I2C_ConvertOtherXferOptions(I2C_HandleTypeDef *hi2c); -/** - * @} - */ - -/* Exported functions --------------------------------------------------------*/ - -/** @defgroup I2C_Exported_Functions I2C Exported Functions - * @{ - */ - -/** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions - * @brief Initialization and Configuration functions - * -@verbatim - =============================================================================== - ##### Initialization and de-initialization functions ##### - =============================================================================== - [..] This subsection provides a set of functions allowing to initialize and - deinitialize the I2Cx peripheral: - - (+) User must Implement HAL_I2C_MspInit() function in which he configures - all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC). - - (+) Call the function HAL_I2C_Init() to configure the selected device with - the selected configuration: - (++) Communication Speed - (++) Duty cycle - (++) Addressing mode - (++) Own Address 1 - (++) Dual Addressing mode - (++) Own Address 2 - (++) General call mode - (++) Nostretch mode - - (+) Call the function HAL_I2C_DeInit() to restore the default configuration - of the selected I2Cx peripheral. - -@endverbatim - * @{ - */ - -/** - * @brief Initializes the I2C according to the specified parameters - * in the I2C_InitTypeDef and initialize the associated handle. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c) -{ - uint32_t freqrange; - uint32_t pclk1; - - /* Check the I2C handle allocation */ - if (hi2c == NULL) - { - return HAL_ERROR; - } - - /* Check the parameters */ - assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); - assert_param(IS_I2C_CLOCK_SPEED(hi2c->Init.ClockSpeed)); - assert_param(IS_I2C_DUTY_CYCLE(hi2c->Init.DutyCycle)); - assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1)); - assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode)); - assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode)); - assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2)); - assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode)); - assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode)); - - if (hi2c->State == HAL_I2C_STATE_RESET) - { - /* Allocate lock resource and initialize it */ - hi2c->Lock = HAL_UNLOCKED; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - /* Init the I2C Callback settings */ - hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */ - hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */ - hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */ - hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */ - hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */ - hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */ - hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */ - hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */ - hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ - hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */ - - if (hi2c->MspInitCallback == NULL) - { - hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */ - } - - /* Init the low level hardware : GPIO, CLOCK, NVIC */ - hi2c->MspInitCallback(hi2c); -#else - /* Init the low level hardware : GPIO, CLOCK, NVIC */ - HAL_I2C_MspInit(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - - hi2c->State = HAL_I2C_STATE_BUSY; - - /* Disable the selected I2C peripheral */ - __HAL_I2C_DISABLE(hi2c); - - /* Get PCLK1 frequency */ - pclk1 = HAL_RCC_GetPCLK1Freq(); - - /* Check the minimum allowed PCLK1 frequency */ - if (I2C_MIN_PCLK_FREQ(pclk1, hi2c->Init.ClockSpeed) == 1U) - { - return HAL_ERROR; - } - - /* Calculate frequency range */ - freqrange = I2C_FREQRANGE(pclk1); - - /*---------------------------- I2Cx CR2 Configuration ----------------------*/ - /* Configure I2Cx: Frequency range */ - MODIFY_REG(hi2c->Instance->CR2, I2C_CR2_FREQ, freqrange); - - /*---------------------------- I2Cx TRISE Configuration --------------------*/ - /* Configure I2Cx: Rise Time */ - MODIFY_REG(hi2c->Instance->TRISE, I2C_TRISE_TRISE, I2C_RISE_TIME(freqrange, hi2c->Init.ClockSpeed)); - - /*---------------------------- I2Cx CCR Configuration ----------------------*/ - /* Configure I2Cx: Speed */ - MODIFY_REG(hi2c->Instance->CCR, (I2C_CCR_FS | I2C_CCR_DUTY | I2C_CCR_CCR), I2C_SPEED(pclk1, hi2c->Init.ClockSpeed, hi2c->Init.DutyCycle)); - - /*---------------------------- I2Cx CR1 Configuration ----------------------*/ - /* Configure I2Cx: Generalcall and NoStretch mode */ - MODIFY_REG(hi2c->Instance->CR1, (I2C_CR1_ENGC | I2C_CR1_NOSTRETCH), (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode)); - - /*---------------------------- I2Cx OAR1 Configuration ---------------------*/ - /* Configure I2Cx: Own Address1 and addressing mode */ - MODIFY_REG(hi2c->Instance->OAR1, (I2C_OAR1_ADDMODE | I2C_OAR1_ADD8_9 | I2C_OAR1_ADD1_7 | I2C_OAR1_ADD0), (hi2c->Init.AddressingMode | hi2c->Init.OwnAddress1)); - - /*---------------------------- I2Cx OAR2 Configuration ---------------------*/ - /* Configure I2Cx: Dual mode and Own Address2 */ - MODIFY_REG(hi2c->Instance->OAR2, (I2C_OAR2_ENDUAL | I2C_OAR2_ADD2), (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2)); - - /* Enable the selected I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->Mode = HAL_I2C_MODE_NONE; - - return HAL_OK; -} - -/** - * @brief DeInitialize the I2C peripheral. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c) -{ - /* Check the I2C handle allocation */ - if (hi2c == NULL) - { - return HAL_ERROR; - } - - /* Check the parameters */ - assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance)); - - hi2c->State = HAL_I2C_STATE_BUSY; - - /* Disable the I2C Peripheral Clock */ - __HAL_I2C_DISABLE(hi2c); - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - if (hi2c->MspDeInitCallback == NULL) - { - hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */ - } - - /* DeInit the low level hardware: GPIO, CLOCK, NVIC */ - hi2c->MspDeInitCallback(hi2c); -#else - /* DeInit the low level hardware: GPIO, CLOCK, NVIC */ - HAL_I2C_MspDeInit(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - hi2c->State = HAL_I2C_STATE_RESET; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Release Lock */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; -} - -/** - * @brief Initialize the I2C MSP. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_MspInit could be implemented in the user file - */ -} - -/** - * @brief DeInitialize the I2C MSP. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_MspDeInit could be implemented in the user file - */ -} - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) -/** - * @brief Register a User I2C Callback - * To be used instead of the weak predefined callback - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param CallbackID ID of the callback to be registered - * This parameter can be one of the following values: - * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID - * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID - * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID - * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID - * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID - * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID - * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID - * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID - * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID - * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID - * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID - * @param pCallback pointer to the Callback function - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_RegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID, pI2C_CallbackTypeDef pCallback) -{ - HAL_StatusTypeDef status = HAL_OK; - - if (pCallback == NULL) - { - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - return HAL_ERROR; - } - /* Process locked */ - __HAL_LOCK(hi2c); - - if (HAL_I2C_STATE_READY == hi2c->State) - { - switch (CallbackID) - { - case HAL_I2C_MASTER_TX_COMPLETE_CB_ID : - hi2c->MasterTxCpltCallback = pCallback; - break; - - case HAL_I2C_MASTER_RX_COMPLETE_CB_ID : - hi2c->MasterRxCpltCallback = pCallback; - break; - - case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID : - hi2c->SlaveTxCpltCallback = pCallback; - break; - - case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID : - hi2c->SlaveRxCpltCallback = pCallback; - break; - - case HAL_I2C_LISTEN_COMPLETE_CB_ID : - hi2c->ListenCpltCallback = pCallback; - break; - - case HAL_I2C_MEM_TX_COMPLETE_CB_ID : - hi2c->MemTxCpltCallback = pCallback; - break; - - case HAL_I2C_MEM_RX_COMPLETE_CB_ID : - hi2c->MemRxCpltCallback = pCallback; - break; - - case HAL_I2C_ERROR_CB_ID : - hi2c->ErrorCallback = pCallback; - break; - - case HAL_I2C_ABORT_CB_ID : - hi2c->AbortCpltCallback = pCallback; - break; - - case HAL_I2C_MSPINIT_CB_ID : - hi2c->MspInitCallback = pCallback; - break; - - case HAL_I2C_MSPDEINIT_CB_ID : - hi2c->MspDeInitCallback = pCallback; - break; - - default : - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - break; - } - } - else if (HAL_I2C_STATE_RESET == hi2c->State) - { - switch (CallbackID) - { - case HAL_I2C_MSPINIT_CB_ID : - hi2c->MspInitCallback = pCallback; - break; - - case HAL_I2C_MSPDEINIT_CB_ID : - hi2c->MspDeInitCallback = pCallback; - break; - - default : - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - break; - } - } - else - { - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - } - - /* Release Lock */ - __HAL_UNLOCK(hi2c); - return status; -} - -/** - * @brief Unregister an I2C Callback - * I2C callback is redirected to the weak predefined callback - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param CallbackID ID of the callback to be unregistered - * This parameter can be one of the following values: - * This parameter can be one of the following values: - * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID - * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID - * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID - * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID - * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID - * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID - * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID - * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID - * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID - * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID - * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_UnRegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID) -{ - HAL_StatusTypeDef status = HAL_OK; - - /* Process locked */ - __HAL_LOCK(hi2c); - - if (HAL_I2C_STATE_READY == hi2c->State) - { - switch (CallbackID) - { - case HAL_I2C_MASTER_TX_COMPLETE_CB_ID : - hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */ - break; - - case HAL_I2C_MASTER_RX_COMPLETE_CB_ID : - hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */ - break; - - case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID : - hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */ - break; - - case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID : - hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */ - break; - - case HAL_I2C_LISTEN_COMPLETE_CB_ID : - hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */ - break; - - case HAL_I2C_MEM_TX_COMPLETE_CB_ID : - hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */ - break; - - case HAL_I2C_MEM_RX_COMPLETE_CB_ID : - hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */ - break; - - case HAL_I2C_ERROR_CB_ID : - hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */ - break; - - case HAL_I2C_ABORT_CB_ID : - hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ - break; - - case HAL_I2C_MSPINIT_CB_ID : - hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */ - break; - - case HAL_I2C_MSPDEINIT_CB_ID : - hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */ - break; - - default : - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - break; - } - } - else if (HAL_I2C_STATE_RESET == hi2c->State) - { - switch (CallbackID) - { - case HAL_I2C_MSPINIT_CB_ID : - hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */ - break; - - case HAL_I2C_MSPDEINIT_CB_ID : - hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */ - break; - - default : - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - break; - } - } - else - { - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - } - - /* Release Lock */ - __HAL_UNLOCK(hi2c); - return status; -} - -/** - * @brief Register the Slave Address Match I2C Callback - * To be used instead of the weak HAL_I2C_AddrCallback() predefined callback - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pCallback pointer to the Address Match Callback function - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_RegisterAddrCallback(I2C_HandleTypeDef *hi2c, pI2C_AddrCallbackTypeDef pCallback) -{ - HAL_StatusTypeDef status = HAL_OK; - - if (pCallback == NULL) - { - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - return HAL_ERROR; - } - /* Process locked */ - __HAL_LOCK(hi2c); - - if (HAL_I2C_STATE_READY == hi2c->State) - { - hi2c->AddrCallback = pCallback; - } - else - { - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - } - - /* Release Lock */ - __HAL_UNLOCK(hi2c); - return status; -} - -/** - * @brief UnRegister the Slave Address Match I2C Callback - * Info Ready I2C Callback is redirected to the weak HAL_I2C_AddrCallback() predefined callback - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_UnRegisterAddrCallback(I2C_HandleTypeDef *hi2c) -{ - HAL_StatusTypeDef status = HAL_OK; - - /* Process locked */ - __HAL_LOCK(hi2c); - - if (HAL_I2C_STATE_READY == hi2c->State) - { - hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */ - } - else - { - /* Update the error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK; - - /* Return error status */ - status = HAL_ERROR; - } - - /* Release Lock */ - __HAL_UNLOCK(hi2c); - return status; -} - -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - -/** - * @} - */ - -/** @defgroup I2C_Exported_Functions_Group2 Input and Output operation functions - * @brief Data transfers functions - * -@verbatim - =============================================================================== - ##### IO operation functions ##### - =============================================================================== - [..] - This subsection provides a set of functions allowing to manage the I2C data - transfers. - - (#) There are two modes of transfer: - (++) Blocking mode : The communication is performed in the polling mode. - The status of all data processing is returned by the same function - after finishing transfer. - (++) No-Blocking mode : The communication is performed using Interrupts - or DMA. These functions return the status of the transfer startup. - The end of the data processing will be indicated through the - dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when - using DMA mode. - - (#) Blocking mode functions are : - (++) HAL_I2C_Master_Transmit() - (++) HAL_I2C_Master_Receive() - (++) HAL_I2C_Slave_Transmit() - (++) HAL_I2C_Slave_Receive() - (++) HAL_I2C_Mem_Write() - (++) HAL_I2C_Mem_Read() - (++) HAL_I2C_IsDeviceReady() - - (#) No-Blocking mode functions with Interrupt are : - (++) HAL_I2C_Master_Transmit_IT() - (++) HAL_I2C_Master_Receive_IT() - (++) HAL_I2C_Slave_Transmit_IT() - (++) HAL_I2C_Slave_Receive_IT() - (++) HAL_I2C_Mem_Write_IT() - (++) HAL_I2C_Mem_Read_IT() - (++) HAL_I2C_Master_Seq_Transmit_IT() - (++) HAL_I2C_Master_Seq_Receive_IT() - (++) HAL_I2C_Slave_Seq_Transmit_IT() - (++) HAL_I2C_Slave_Seq_Receive_IT() - (++) HAL_I2C_EnableListen_IT() - (++) HAL_I2C_DisableListen_IT() - (++) HAL_I2C_Master_Abort_IT() - - (#) No-Blocking mode functions with DMA are : - (++) HAL_I2C_Master_Transmit_DMA() - (++) HAL_I2C_Master_Receive_DMA() - (++) HAL_I2C_Slave_Transmit_DMA() - (++) HAL_I2C_Slave_Receive_DMA() - (++) HAL_I2C_Mem_Write_DMA() - (++) HAL_I2C_Mem_Read_DMA() - (++) HAL_I2C_Master_Seq_Transmit_DMA() - (++) HAL_I2C_Master_Seq_Receive_DMA() - (++) HAL_I2C_Slave_Seq_Transmit_DMA() - (++) HAL_I2C_Slave_Seq_Receive_DMA() - - (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: - (++) HAL_I2C_MasterTxCpltCallback() - (++) HAL_I2C_MasterRxCpltCallback() - (++) HAL_I2C_SlaveTxCpltCallback() - (++) HAL_I2C_SlaveRxCpltCallback() - (++) HAL_I2C_MemTxCpltCallback() - (++) HAL_I2C_MemRxCpltCallback() - (++) HAL_I2C_AddrCallback() - (++) HAL_I2C_ListenCpltCallback() - (++) HAL_I2C_ErrorCallback() - (++) HAL_I2C_AbortCpltCallback() - -@endverbatim - * @{ - */ - -/** - * @brief Transmits in master mode an amount of data in blocking mode. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) -{ - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) - { - return HAL_BUSY; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Send Slave Address */ - if (I2C_MasterRequestWrite(hi2c, DevAddress, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - while (hi2c->XferSize > 0U) - { - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - hi2c->XferSize--; - - if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U)) - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - hi2c->XferSize--; - } - - /* Wait until BTF flag is set */ - if (I2C_WaitOnBTFFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - } - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receives in master mode an amount of data in blocking mode. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout) -{ - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) - { - return HAL_BUSY; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Send Slave Address */ - if (I2C_MasterRequestRead(hi2c, DevAddress, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - if (hi2c->XferSize == 0U) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - else if (hi2c->XferSize == 1U) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Re-enable IRQs */ - __enable_irq(); - } - else if (hi2c->XferSize == 2U) - { - /* Enable Pos */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Re-enable IRQs */ - __enable_irq(); - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - - while (hi2c->XferSize > 0U) - { - if (hi2c->XferSize <= 3U) - { - /* One byte */ - if (hi2c->XferSize == 1U) - { - /* Wait until RXNE flag is set */ - if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - /* Two bytes */ - else if (hi2c->XferSize == 2U) - { - /* Wait until BTF flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - /* 3 Last bytes */ - else - { - /* Wait until BTF flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - /* Wait until BTF flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - } - else - { - /* Wait until RXNE flag is set */ - if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - } - } - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Transmits in slave mode an amount of data in blocking mode. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) -{ - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* If 10bit addressing mode is selected */ - if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT) - { - /* Wait until ADDR flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - - while (hi2c->XferSize > 0U) - { - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - /* Disable Address Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - return HAL_ERROR; - } - - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - hi2c->XferSize--; - - if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U)) - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - hi2c->XferSize--; - } - } - - /* Wait until AF flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear AF flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - /* Disable Address Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive in slave mode an amount of data in blocking mode - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout) -{ - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - if ((pData == NULL) || (Size == (uint16_t)0)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - while (hi2c->XferSize > 0U) - { - /* Wait until RXNE flag is set */ - if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - /* Disable Address Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - return HAL_ERROR; - } - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U)) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - } - - /* Wait until STOP flag is set */ - if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - /* Disable Address Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - return HAL_ERROR; - } - - /* Clear STOP flag */ - __HAL_I2C_CLEAR_STOPFLAG(hi2c); - - /* Disable Address Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Transmit in master mode an amount of data in non-blocking mode with Interrupt - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) -{ - __IO uint32_t count = 0U; - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive in master mode an amount of data in non-blocking mode with Interrupt - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) -{ - __IO uint32_t count = 0U; - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Transmit in slave mode an amount of data in non-blocking mode with Interrupt - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) -{ - - if (hi2c->State == HAL_I2C_STATE_READY) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive in slave mode an amount of data in non-blocking mode with Interrupt - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) -{ - - if (hi2c->State == HAL_I2C_STATE_READY) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Transmit in master mode an amount of data in non-blocking mode with DMA - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) -{ - __IO uint32_t count = 0U; - HAL_StatusTypeDef dmaxferstatus; - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - - if (hi2c->XferSize > 0U) - { - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmatx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmatx->XferHalfCpltCallback = NULL; - hi2c->hdmatx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - } - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive in master mode an amount of data in non-blocking mode with DMA - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size) -{ - __IO uint32_t count = 0U; - HAL_StatusTypeDef dmaxferstatus; - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - - if (hi2c->XferSize > 0U) - { - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmarx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmarx->XferHalfCpltCallback = NULL; - hi2c->hdmarx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - } - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Transmit in slave mode an amount of data in non-blocking mode with DMA - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) -{ - HAL_StatusTypeDef dmaxferstatus; - - if (hi2c->State == HAL_I2C_STATE_READY) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmatx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmatx->XferHalfCpltCallback = NULL; - hi2c->hdmatx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Enable DMA Request */ - hi2c->Instance->CR2 |= I2C_CR2_DMAEN; - - return HAL_OK; - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Receive in slave mode an amount of data in non-blocking mode with DMA - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size) -{ - HAL_StatusTypeDef dmaxferstatus; - - if (hi2c->State == HAL_I2C_STATE_READY) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmarx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmarx->XferHalfCpltCallback = NULL; - hi2c->hdmarx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - return HAL_OK; - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Write an amount of data in blocking mode to a specific memory address - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) -{ - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - - /* Check the parameters */ - assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) - { - return HAL_BUSY; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MEM; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Send Slave Address and Memory Address */ - if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - while (hi2c->XferSize > 0U) - { - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U)) - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - } - - /* Wait until BTF flag is set */ - if (I2C_WaitOnBTFFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Read an amount of data in blocking mode from a specific memory address - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout) -{ - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - - /* Check the parameters */ - assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) - { - return HAL_BUSY; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MEM; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Send Slave Address and Memory Address */ - if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - if (hi2c->XferSize == 0U) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - else if (hi2c->XferSize == 1U) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Re-enable IRQs */ - __enable_irq(); - } - else if (hi2c->XferSize == 2U) - { - /* Enable Pos */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Re-enable IRQs */ - __enable_irq(); - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - - while (hi2c->XferSize > 0U) - { - if (hi2c->XferSize <= 3U) - { - /* One byte */ - if (hi2c->XferSize == 1U) - { - /* Wait until RXNE flag is set */ - if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - /* Two bytes */ - else if (hi2c->XferSize == 2U) - { - /* Wait until BTF flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - /* 3 Last bytes */ - else - { - /* Wait until BTF flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Disable all active IRQs around ADDR clearing and STOP programming because the EV6_3 - software sequence must complete before the current byte end of transfer */ - __disable_irq(); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - /* Wait until BTF flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - } - else - { - /* Wait until RXNE flag is set */ - if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferSize--; - hi2c->XferCount--; - } - } - } - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Write an amount of data in non-blocking mode with Interrupt to a specific memory address - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) -{ - __IO uint32_t count = 0U; - - /* Check the parameters */ - assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MEM; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - hi2c->Memaddress = MemAddress; - hi2c->MemaddSize = MemAddSize; - hi2c->EventCount = 0U; - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Read an amount of data in non-blocking mode with Interrupt from a specific memory address - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) -{ - __IO uint32_t count = 0U; - - /* Check the parameters */ - assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MEM; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - hi2c->Memaddress = MemAddress; - hi2c->MemaddSize = MemAddSize; - hi2c->EventCount = 0U; - - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - if (hi2c->XferSize > 0U) - { - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - } - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Write an amount of data in non-blocking mode with DMA to a specific memory address - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) -{ - __IO uint32_t count = 0U; - HAL_StatusTypeDef dmaxferstatus; - - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - - /* Check the parameters */ - assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MEM; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - if (hi2c->XferSize > 0U) - { - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmatx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmatx->XferHalfCpltCallback = NULL; - hi2c->hdmatx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Send Slave Address and Memory Address */ - if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - /* Enable ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); - - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - return HAL_OK; - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_SIZE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Reads an amount of data in non-blocking mode with DMA from a specific memory address. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param pData Pointer to data buffer - * @param Size Amount of data to be read - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size) -{ - /* Init tickstart for timeout management*/ - uint32_t tickstart = HAL_GetTick(); - __IO uint32_t count = 0U; - HAL_StatusTypeDef dmaxferstatus; - - /* Check the parameters */ - assert_param(IS_I2C_MEMADD_SIZE(MemAddSize)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MEM; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - if (hi2c->XferSize > 0U) - { - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmarx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmarx->XferHalfCpltCallback = NULL; - hi2c->hdmarx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Send Slave Address and Memory Address */ - if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - if (hi2c->XferSize == 1U) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - else - { - /* Enable Last DMA bit */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST); - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - /* Enable ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_ERR); - - /* Enable DMA Request */ - hi2c->Instance->CR2 |= I2C_CR2_DMAEN; - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - /* Send Slave Address and Memory Address */ - if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - hi2c->State = HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - } - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Checks if target device is ready for communication. - * @note This function is used with Memory devices - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param Trials Number of trials - * @param Timeout Timeout duration - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout) -{ - /* Get tick */ - uint32_t tickstart = HAL_GetTick(); - uint32_t I2C_Trials = 1U; - FlagStatus tmp1; - FlagStatus tmp2; - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) - { - return HAL_BUSY; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - do - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Wait until SB flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Send slave address */ - hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); - - /* Wait until ADDR or AF flag are set */ - /* Get tick */ - tickstart = HAL_GetTick(); - - tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR); - tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF); - while ((hi2c->State != HAL_I2C_STATE_TIMEOUT) && (tmp1 == RESET) && (tmp2 == RESET)) - { - if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U)) - { - hi2c->State = HAL_I2C_STATE_TIMEOUT; - } - tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR); - tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF); - } - - hi2c->State = HAL_I2C_STATE_READY; - - /* Check if the ADDR flag has been set */ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Clear ADDR Flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Wait until BUSY flag is reset */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - hi2c->State = HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Clear AF Flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - /* Wait until BUSY flag is reset */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG, tickstart) != HAL_OK) - { - return HAL_ERROR; - } - } - - /* Increment Trials */ - I2C_Trials++; - } - while (I2C_Trials < Trials); - - hi2c->State = HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with Interrupt. - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - __IO uint32_t Prev_State = 0x00U; - __IO uint32_t count = 0x00U; - - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Check Busy Flag only if FIRST call of Master interface */ - if ((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - hi2c->Devaddress = DevAddress; - - Prev_State = hi2c->PreviousState; - - /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ - /* Mean Previous state is same as current state */ - if ((Prev_State != I2C_STATE_MASTER_BUSY_TX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with DMA. - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - __IO uint32_t Prev_State = 0x00U; - __IO uint32_t count = 0x00U; - HAL_StatusTypeDef dmaxferstatus; - - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Check Busy Flag only if FIRST call of Master interface */ - if ((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - hi2c->Devaddress = DevAddress; - - Prev_State = hi2c->PreviousState; - - if (hi2c->XferSize > 0U) - { - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmatx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmatx->XferHalfCpltCallback = NULL; - hi2c->hdmatx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ - /* Mean Previous state is same as current state */ - if ((Prev_State != I2C_STATE_MASTER_BUSY_TX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* If XferOptions is not associated to a new frame, mean no start bit is request, enable directly the DMA request */ - /* In other cases, DMA request is enabled after Slave address treatment in IRQHandler */ - if ((XferOptions == I2C_NEXT_FRAME) || (XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP)) - { - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - } - - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ - /* Mean Previous state is same as current state */ - if ((Prev_State != I2C_STATE_MASTER_BUSY_TX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - } - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential receive in master I2C mode an amount of data in non-blocking mode with Interrupt - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - __IO uint32_t Prev_State = 0x00U; - __IO uint32_t count = 0U; - uint32_t enableIT = (I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Check Busy Flag only if FIRST call of Master interface */ - if ((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - hi2c->Devaddress = DevAddress; - - Prev_State = hi2c->PreviousState; - - if ((hi2c->XferCount == 2U) && ((XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP))) - { - if (Prev_State == I2C_STATE_MASTER_BUSY_RX) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Enable Pos */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - /* Remove Enabling of IT_BUF, mean RXNE treatment, treat the 2 bytes through BTF */ - enableIT &= ~I2C_IT_BUF; - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - - /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ - /* Mean Previous state is same as current state */ - if ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable interrupts */ - __HAL_I2C_ENABLE_IT(hi2c, enableIT); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential receive in master mode an amount of data in non-blocking mode with DMA - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - __IO uint32_t Prev_State = 0x00U; - __IO uint32_t count = 0U; - uint32_t enableIT = (I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - HAL_StatusTypeDef dmaxferstatus; - - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (hi2c->State == HAL_I2C_STATE_READY) - { - /* Check Busy Flag only if FIRST call of Master interface */ - if ((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock / 25U / 1000U); - do - { - count--; - if (count == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) != RESET); - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - /* Clear Last DMA bit */ - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_LAST); - - hi2c->State = HAL_I2C_STATE_BUSY_RX; - hi2c->Mode = HAL_I2C_MODE_MASTER; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - hi2c->Devaddress = DevAddress; - - Prev_State = hi2c->PreviousState; - - if (hi2c->XferSize > 0U) - { - if ((hi2c->XferCount == 2U) && ((XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP))) - { - if (Prev_State == I2C_STATE_MASTER_BUSY_RX) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Enable Pos */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - /* Enable Last DMA bit */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST); - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - if ((XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_OTHER_AND_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP)) - { - /* Enable Last DMA bit */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST); - } - } - - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmarx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmarx->XferHalfCpltCallback = NULL; - hi2c->hdmarx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ - /* Mean Previous state is same as current state */ - if ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Update interrupt for only EVT and ERR */ - enableIT = (I2C_IT_EVT | I2C_IT_ERR); - } - else - { - /* Update interrupt for only ERR */ - enableIT = I2C_IT_ERR; - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* If XferOptions is not associated to a new frame, mean no start bit is request, enable directly the DMA request */ - /* In other cases, DMA request is enabled after Slave address treatment in IRQHandler */ - if ((XferOptions == I2C_NEXT_FRAME) || (XferOptions == I2C_LAST_FRAME) || (XferOptions == I2C_LAST_FRAME_NO_STOP)) - { - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - } - - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, enableIT); - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */ - /* Mean Previous state is same as current state */ - if ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 1)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable interrupts */ - __HAL_I2C_ENABLE_IT(hi2c, enableIT); - } - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential transmit in slave mode an amount of data in non-blocking mode with Interrupt - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential transmit in slave mode an amount of data in non-blocking mode with DMA - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - HAL_StatusTypeDef dmaxferstatus; - - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Disable Interrupts, to prevent preemption during treatment in case of multicall */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */ - /* and then toggle the HAL slave RX state to TX state */ - if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN) - { - if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - /* Abort DMA Xfer if any */ - if (hi2c->hdmarx != NULL) - { - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - /* Set the I2C DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort; - - /* Abort DMA RX */ - if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK) - { - /* Call Directly XferAbortCallback function in case of error */ - hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx); - } - } - } - } - else if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN) - { - if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - /* Abort DMA Xfer if any */ - if (hi2c->hdmatx != NULL) - { - /* Set the I2C DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort; - - /* Abort DMA TX */ - if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK) - { - /* Call Directly XferAbortCallback function in case of error */ - hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx); - } - } - } - } - else - { - /* Nothing to do */ - } - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmatx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmatx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmatx->XferHalfCpltCallback = NULL; - hi2c->hdmatx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Enable DMA Request */ - hi2c->Instance->CR2 |= I2C_CR2_DMAEN; - - return HAL_OK; - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential receive in slave mode an amount of data in non-blocking mode with Interrupt - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - - /* Enable EVT, BUF and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Sequential receive in slave mode an amount of data in non-blocking mode with DMA - * @note This interface allow to manage repeated start condition when a direction change during transfer - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param pData Pointer to data buffer - * @param Size Amount of data to be sent - * @param XferOptions Options of Transfer, value of @ref I2C_XferOptions_definition - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - HAL_StatusTypeDef dmaxferstatus; - - /* Check the parameters */ - assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions)); - - if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN) - { - if ((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Process Locked */ - __HAL_LOCK(hi2c); - - /* Disable Interrupts, to prevent preemption during treatment in case of multicall */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */ - /* and then toggle the HAL slave RX state to TX state */ - if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN) - { - if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - /* Abort DMA Xfer if any */ - if (hi2c->hdmarx != NULL) - { - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - /* Set the I2C DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort; - - /* Abort DMA RX */ - if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK) - { - /* Call Directly XferAbortCallback function in case of error */ - hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx); - } - } - } - } - else if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN) - { - if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - /* Abort DMA Xfer if any */ - if (hi2c->hdmatx != NULL) - { - /* Set the I2C DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort; - - /* Abort DMA TX */ - if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK) - { - /* Call Directly XferAbortCallback function in case of error */ - hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx); - } - } - } - } - else - { - /* Nothing to do */ - } - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Disable Pos */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN; - hi2c->Mode = HAL_I2C_MODE_SLAVE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Prepare transfer parameters */ - hi2c->pBuffPtr = pData; - hi2c->XferCount = Size; - hi2c->XferSize = hi2c->XferCount; - hi2c->XferOptions = XferOptions; - - /* Set the I2C DMA transfer complete callback */ - hi2c->hdmarx->XferCpltCallback = I2C_DMAXferCplt; - - /* Set the DMA error callback */ - hi2c->hdmarx->XferErrorCallback = I2C_DMAError; - - /* Set the unused DMA callbacks to NULL */ - hi2c->hdmarx->XferHalfCpltCallback = NULL; - hi2c->hdmarx->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - if (dmaxferstatus == HAL_OK) - { - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - /* Note : The I2C interrupts must be enabled after unlocking current process - to avoid the risk of I2C interrupt handle execution before current - process unlock */ - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - return HAL_OK; - } - else - { - /* Update I2C state */ - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Update I2C error code */ - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Enable the Address listen mode with Interrupt. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c) -{ - if (hi2c->State == HAL_I2C_STATE_READY) - { - hi2c->State = HAL_I2C_STATE_LISTEN; - - /* Check if the I2C is already enabled */ - if ((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE) - { - /* Enable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - } - - /* Enable Address Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Disable the Address listen mode with Interrupt. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of tmp to prevent undefined behavior of volatile usage */ - uint32_t tmp; - - /* Disable Address listen mode only if a transfer is not ongoing */ - if (hi2c->State == HAL_I2C_STATE_LISTEN) - { - tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK; - hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode); - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Disable Address Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Disable EVT and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - return HAL_OK; - } - else - { - return HAL_BUSY; - } -} - -/** - * @brief Abort a master I2C IT or DMA process communication with Interrupt. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(DevAddress); - - /* Abort Master transfer during Receive or Transmit process */ - if (hi2c->Mode == HAL_I2C_MODE_MASTER) - { - /* Process Locked */ - __HAL_LOCK(hi2c); - - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_ABORT; - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - hi2c->XferCount = 0U; - - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Call the corresponding callback to inform upper layer of End of Transfer */ - I2C_ITError(hi2c); - - return HAL_OK; - } - else - { - /* Wrong usage of abort function */ - /* This function should be used only in case of abort monitored by master device */ - return HAL_ERROR; - } -} - -/** - * @} - */ - -/** @defgroup I2C_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks - * @{ - */ - -/** - * @brief This function handles I2C event interrupt request. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c) -{ - uint32_t sr1itflags; - uint32_t sr2itflags = 0U; - uint32_t itsources = READ_REG(hi2c->Instance->CR2); - uint32_t CurrentXferOptions = hi2c->XferOptions; - HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode; - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - - /* Master or Memory mode selected */ - if ((CurrentMode == HAL_I2C_MODE_MASTER) || (CurrentMode == HAL_I2C_MODE_MEM)) - { - sr2itflags = READ_REG(hi2c->Instance->SR2); - sr1itflags = READ_REG(hi2c->Instance->SR1); - - /* Exit IRQ event until Start Bit detected in case of Other frame requested */ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_SB) == RESET) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(CurrentXferOptions) == 1U)) - { - return; - } - - /* SB Set ----------------------------------------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_SB) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - /* Convert OTHER_xxx XferOptions if any */ - I2C_ConvertOtherXferOptions(hi2c); - - I2C_Master_SB(hi2c); - } - /* ADD10 Set -------------------------------------------------------------*/ - else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ADD10) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - I2C_Master_ADD10(hi2c); - } - /* ADDR Set --------------------------------------------------------------*/ - else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ADDR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - I2C_Master_ADDR(hi2c); - } - /* I2C in mode Transmitter -----------------------------------------------*/ - else if (I2C_CHECK_FLAG(sr2itflags, I2C_FLAG_TRA) != RESET) - { - /* Do not check buffer and BTF flag if a Xfer DMA is on going */ - if (READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) != I2C_CR2_DMAEN) - { - /* TXE set and BTF reset -----------------------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_TXE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET)) - { - I2C_MasterTransmit_TXE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - I2C_MasterTransmit_BTF(hi2c); - } - else - { - /* Do nothing */ - } - } - } - /* I2C in mode Receiver --------------------------------------------------*/ - else - { - /* Do not check buffer and BTF flag if a Xfer DMA is on going */ - if (READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) != I2C_CR2_DMAEN) - { - /* RXNE set and BTF reset -----------------------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_RXNE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET)) - { - I2C_MasterReceive_RXNE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - I2C_MasterReceive_BTF(hi2c); - } - else - { - /* Do nothing */ - } - } - } - } - /* Slave mode selected */ - else - { - /* If an error is detected, read only SR1 register to prevent */ - /* a clear of ADDR flags by reading SR2 after reading SR1 in Error treatment */ - if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE) - { - sr1itflags = READ_REG(hi2c->Instance->SR1); - } - else - { - sr2itflags = READ_REG(hi2c->Instance->SR2); - sr1itflags = READ_REG(hi2c->Instance->SR1); - } - - /* ADDR set --------------------------------------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ADDR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - /* Now time to read SR2, this will clear ADDR flag automatically */ - if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE) - { - sr2itflags = READ_REG(hi2c->Instance->SR2); - } - I2C_Slave_ADDR(hi2c, sr2itflags); - } - /* STOPF set --------------------------------------------------------------*/ - else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_STOPF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - I2C_Slave_STOPF(hi2c); - } - /* I2C in mode Transmitter -----------------------------------------------*/ - else if ((CurrentState == HAL_I2C_STATE_BUSY_TX) || (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN)) - { - /* TXE set and BTF reset -----------------------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_TXE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET)) - { - I2C_SlaveTransmit_TXE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - I2C_SlaveTransmit_BTF(hi2c); - } - else - { - /* Do nothing */ - } - } - /* I2C in mode Receiver --------------------------------------------------*/ - else - { - /* RXNE set and BTF reset ----------------------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_RXNE) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_BUF) != RESET) && (I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) == RESET)) - { - I2C_SlaveReceive_RXNE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BTF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_EVT) != RESET)) - { - I2C_SlaveReceive_BTF(hi2c); - } - else - { - /* Do nothing */ - } - } - } -} - -/** - * @brief This function handles I2C error interrupt request. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c) -{ - HAL_I2C_ModeTypeDef tmp1; - uint32_t tmp2; - HAL_I2C_StateTypeDef tmp3; - uint32_t tmp4; - uint32_t sr1itflags = READ_REG(hi2c->Instance->SR1); - uint32_t itsources = READ_REG(hi2c->Instance->CR2); - uint32_t error = HAL_I2C_ERROR_NONE; - - /* I2C Bus error interrupt occurred ----------------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_BERR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET)) - { - error |= HAL_I2C_ERROR_BERR; - - /* Clear BERR flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR); - - /* Workaround: Start cannot be generated after a misplaced Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_SWRST); - } - - /* I2C Arbitration Lost error interrupt occurred ---------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_ARLO) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET)) - { - error |= HAL_I2C_ERROR_ARLO; - - /* Clear ARLO flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO); - } - - /* I2C Acknowledge failure error interrupt occurred ------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_AF) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET)) - { - tmp1 = hi2c->Mode; - tmp2 = hi2c->XferCount; - tmp3 = hi2c->State; - tmp4 = hi2c->PreviousState; - if ((tmp1 == HAL_I2C_MODE_SLAVE) && (tmp2 == 0U) && \ - ((tmp3 == HAL_I2C_STATE_BUSY_TX) || (tmp3 == HAL_I2C_STATE_BUSY_TX_LISTEN) || \ - ((tmp3 == HAL_I2C_STATE_LISTEN) && (tmp4 == I2C_STATE_SLAVE_BUSY_TX)))) - { - I2C_Slave_AF(hi2c); - } - else - { - /* Clear AF flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - error |= HAL_I2C_ERROR_AF; - - /* Do not generate a STOP in case of Slave receive non acknowledge during transfer (mean not at the end of transfer) */ - if (hi2c->Mode == HAL_I2C_MODE_MASTER) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - } - } - - /* I2C Over-Run/Under-Run interrupt occurred -------------------------------*/ - if ((I2C_CHECK_FLAG(sr1itflags, I2C_FLAG_OVR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERR) != RESET)) - { - error |= HAL_I2C_ERROR_OVR; - /* Clear OVR flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR); - } - - /* Call the Error Callback in case of Error detected -----------------------*/ - if (error != HAL_I2C_ERROR_NONE) - { - hi2c->ErrorCode |= error; - I2C_ITError(hi2c); - } -} - -/** - * @brief Master Tx Transfer completed callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_MasterTxCpltCallback could be implemented in the user file - */ -} - -/** - * @brief Master Rx Transfer completed callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_MasterRxCpltCallback could be implemented in the user file - */ -} - -/** @brief Slave Tx Transfer completed callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_SlaveTxCpltCallback could be implemented in the user file - */ -} - -/** - * @brief Slave Rx Transfer completed callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_SlaveRxCpltCallback could be implemented in the user file - */ -} - -/** - * @brief Slave Address Match callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param TransferDirection Master request Transfer Direction (Write/Read), value of @ref I2C_XferDirection_definition - * @param AddrMatchCode Address Match Code - * @retval None - */ -__weak void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - UNUSED(TransferDirection); - UNUSED(AddrMatchCode); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_AddrCallback() could be implemented in the user file - */ -} - -/** - * @brief Listen Complete callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_ListenCpltCallback() could be implemented in the user file - */ -} - -/** - * @brief Memory Tx Transfer completed callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_MemTxCpltCallback could be implemented in the user file - */ -} - -/** - * @brief Memory Rx Transfer completed callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_MemRxCpltCallback could be implemented in the user file - */ -} - -/** - * @brief I2C error callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_ErrorCallback could be implemented in the user file - */ -} - -/** - * @brief I2C abort callback. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval None - */ -__weak void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c) -{ - /* Prevent unused argument(s) compilation warning */ - UNUSED(hi2c); - - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_I2C_AbortCpltCallback could be implemented in the user file - */ -} - -/** - * @} - */ - -/** @defgroup I2C_Exported_Functions_Group3 Peripheral State, Mode and Error functions - * @brief Peripheral State, Mode and Error functions - * -@verbatim - =============================================================================== - ##### Peripheral State, Mode and Error functions ##### - =============================================================================== - [..] - This subsection permit to get in run-time the status of the peripheral - and the data flow. - -@endverbatim - * @{ - */ - -/** - * @brief Return the I2C handle state. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval HAL state - */ -HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c) -{ - /* Return I2C handle state */ - return hi2c->State; -} - -/** - * @brief Returns the I2C Master, Slave, Memory or no mode. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL mode - */ -HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c) -{ - return hi2c->Mode; -} - -/** - * @brief Return the I2C error code. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval I2C Error Code - */ -uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c) -{ - return hi2c->ErrorCode; -} - -/** - * @} - */ - -/** - * @} - */ - -/** @addtogroup I2C_Private_Functions - * @{ - */ - -/** - * @brief Handle TXE flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode; - uint32_t CurrentXferOptions = hi2c->XferOptions; - - if ((hi2c->XferSize == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX)) - { - /* Call TxCpltCallback() directly if no stop mode is set */ - if ((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME)) - { - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MasterTxCpltCallback(hi2c); -#else - HAL_I2C_MasterTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else /* Generate Stop condition then Call TxCpltCallback() */ - { - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - - if (hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MemTxCpltCallback(hi2c); -#else - HAL_I2C_MemTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MasterTxCpltCallback(hi2c); -#else - HAL_I2C_MasterTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } - } - else if ((CurrentState == HAL_I2C_STATE_BUSY_TX) || \ - ((CurrentMode == HAL_I2C_MODE_MEM) && (CurrentState == HAL_I2C_STATE_BUSY_RX))) - { - if (hi2c->XferCount == 0U) - { - /* Disable BUF interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); - } - else - { - if (hi2c->Mode == HAL_I2C_MODE_MEM) - { - if (hi2c->EventCount == 0U) - { - /* If Memory address size is 8Bit */ - if (hi2c->MemaddSize == I2C_MEMADD_SIZE_8BIT) - { - /* Send Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_LSB(hi2c->Memaddress); - - hi2c->EventCount += 2U; - } - /* If Memory address size is 16Bit */ - else - { - /* Send MSB of Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_MSB(hi2c->Memaddress); - - hi2c->EventCount++; - } - } - else if (hi2c->EventCount == 1U) - { - /* Send LSB of Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_LSB(hi2c->Memaddress); - - hi2c->EventCount++; - } - else if (hi2c->EventCount == 2U) - { - if (hi2c->State == HAL_I2C_STATE_BUSY_RX) - { - /* Generate Restart */ - hi2c->Instance->CR1 |= I2C_CR1_START; - } - else if (hi2c->State == HAL_I2C_STATE_BUSY_TX) - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } - else - { - /* Do nothing */ - } - } - else - { - /* Do nothing */ - } - } - else - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } - } - } - else - { - /* Do nothing */ - } -} - -/** - * @brief Handle BTF flag for Master transmitter - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - uint32_t CurrentXferOptions = hi2c->XferOptions; - - if (hi2c->State == HAL_I2C_STATE_BUSY_TX) - { - if (hi2c->XferCount != 0U) - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } - else - { - /* Call TxCpltCallback() directly if no stop mode is set */ - if ((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME)) - { - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MasterTxCpltCallback(hi2c); -#else - HAL_I2C_MasterTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else /* Generate Stop condition then Call TxCpltCallback() */ - { - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - - if (hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MemTxCpltCallback(hi2c); -#else - HAL_I2C_MemTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MasterTxCpltCallback(hi2c); -#else - HAL_I2C_MasterTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } - } - } -} - -/** - * @brief Handle RXNE flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c) -{ - if (hi2c->State == HAL_I2C_STATE_BUSY_RX) - { - uint32_t tmp; - - tmp = hi2c->XferCount; - if (tmp > 3U) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - - if (hi2c->XferCount == (uint16_t)3) - { - /* Disable BUF interrupt, this help to treat correctly the last 4 bytes - on BTF subroutine */ - /* Disable BUF interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); - } - } - else if ((hi2c->XferOptions != I2C_FIRST_AND_NEXT_FRAME) && ((tmp == 1U) || (tmp == 0U))) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - - hi2c->State = HAL_I2C_STATE_READY; - - if (hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->PreviousState = I2C_STATE_NONE; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MemRxCpltCallback(hi2c); -#else - HAL_I2C_MemRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MasterRxCpltCallback(hi2c); -#else - HAL_I2C_MasterRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } - else - { - /* Do nothing */ - } - } -} - -/** - * @brief Handle BTF flag for Master receiver - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - uint32_t CurrentXferOptions = hi2c->XferOptions; - - if (hi2c->XferCount == 4U) - { - /* Disable BUF interrupt, this help to treat correctly the last 2 bytes - on BTF subroutine if there is a reception delay between N-1 and N byte */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } - else if (hi2c->XferCount == 3U) - { - /* Disable BUF interrupt, this help to treat correctly the last 2 bytes - on BTF subroutine if there is a reception delay between N-1 and N byte */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); - - if ((CurrentXferOptions != I2C_NEXT_FRAME) && (CurrentXferOptions != I2C_FIRST_AND_NEXT_FRAME)) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } - else if (hi2c->XferCount == 2U) - { - /* Prepare next transfer or stop current transfer */ - if ((CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME_NO_STOP)) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - else if ((CurrentXferOptions == I2C_NEXT_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_NEXT_FRAME)) - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - else if (CurrentXferOptions != I2C_LAST_FRAME_NO_STOP) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - else - { - /* Do nothing */ - } - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - - /* Disable EVT and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - hi2c->State = HAL_I2C_STATE_READY; - if (hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->PreviousState = I2C_STATE_NONE; -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MemRxCpltCallback(hi2c); -#else - HAL_I2C_MemRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX; -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MasterRxCpltCallback(hi2c); -#else - HAL_I2C_MasterRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } - else - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } -} - -/** - * @brief Handle SB flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_Master_SB(I2C_HandleTypeDef *hi2c) -{ - if (hi2c->Mode == HAL_I2C_MODE_MEM) - { - if (hi2c->EventCount == 0U) - { - /* Send slave address */ - hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(hi2c->Devaddress); - } - else - { - hi2c->Instance->DR = I2C_7BIT_ADD_READ(hi2c->Devaddress); - } - } - else - { - if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) - { - /* Send slave 7 Bits address */ - if (hi2c->State == HAL_I2C_STATE_BUSY_TX) - { - hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(hi2c->Devaddress); - } - else - { - hi2c->Instance->DR = I2C_7BIT_ADD_READ(hi2c->Devaddress); - } - - if ((hi2c->hdmatx != NULL) || (hi2c->hdmarx != NULL)) - { - if ((hi2c->hdmatx->XferCpltCallback != NULL) || (hi2c->hdmarx->XferCpltCallback != NULL)) - { - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - } - } - } - else - { - if (hi2c->EventCount == 0U) - { - /* Send header of slave address */ - hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(hi2c->Devaddress); - } - else if (hi2c->EventCount == 1U) - { - /* Send header of slave address */ - hi2c->Instance->DR = I2C_10BIT_HEADER_READ(hi2c->Devaddress); - } - else - { - /* Do nothing */ - } - } - } -} - -/** - * @brief Handle ADD10 flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_Master_ADD10(I2C_HandleTypeDef *hi2c) -{ - /* Send slave address */ - hi2c->Instance->DR = I2C_10BIT_ADDRESS(hi2c->Devaddress); - - if ((hi2c->hdmatx != NULL) || (hi2c->hdmarx != NULL)) - { - if ((hi2c->hdmatx->XferCpltCallback != NULL) || (hi2c->hdmarx->XferCpltCallback != NULL)) - { - /* Enable DMA Request */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - } - } -} - -/** - * @brief Handle ADDR flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_Master_ADDR(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode; - uint32_t CurrentXferOptions = hi2c->XferOptions; - uint32_t Prev_State = hi2c->PreviousState; - - if (hi2c->State == HAL_I2C_STATE_BUSY_RX) - { - if ((hi2c->EventCount == 0U) && (CurrentMode == HAL_I2C_MODE_MEM)) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - else if ((hi2c->EventCount == 0U) && (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Restart */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - hi2c->EventCount++; - } - else - { - if (hi2c->XferCount == 0U) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - else if (hi2c->XferCount == 1U) - { - if (CurrentXferOptions == I2C_NO_OPTION_FRAME) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - else - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - } - /* Prepare next transfer or stop current transfer */ - else if ((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) \ - && ((Prev_State != I2C_STATE_MASTER_BUSY_RX) || (CurrentXferOptions == I2C_FIRST_FRAME))) - { - if ((CurrentXferOptions != I2C_NEXT_FRAME) && (CurrentXferOptions != I2C_FIRST_AND_NEXT_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME_NO_STOP)) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - else - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - } - else if (hi2c->XferCount == 2U) - { - if ((CurrentXferOptions != I2C_NEXT_FRAME) && (CurrentXferOptions != I2C_FIRST_AND_NEXT_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME_NO_STOP)) - { - /* Enable Pos */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_POS); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - - if (((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) && ((CurrentXferOptions == I2C_NO_OPTION_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME_NO_STOP) || (CurrentXferOptions == I2C_LAST_FRAME))) - { - /* Enable Last DMA bit */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST); - } - } - else - { - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - if (((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) && ((CurrentXferOptions == I2C_NO_OPTION_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME_NO_STOP) || (CurrentXferOptions == I2C_LAST_FRAME))) - { - /* Enable Last DMA bit */ - SET_BIT(hi2c->Instance->CR2, I2C_CR2_LAST); - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - - /* Reset Event counter */ - hi2c->EventCount = 0U; - } - } - else - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } -} - -/** - * @brief Handle TXE flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - - if (hi2c->XferCount != 0U) - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - - if ((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN)) - { - /* Last Byte is received, disable Interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); - - /* Set state at HAL_I2C_STATE_LISTEN */ - hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX; - hi2c->State = HAL_I2C_STATE_LISTEN; - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->SlaveTxCpltCallback(hi2c); -#else - HAL_I2C_SlaveTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } -} - -/** - * @brief Handle BTF flag for Slave transmitter - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c) -{ - if (hi2c->XferCount != 0U) - { - /* Write data to DR */ - hi2c->Instance->DR = *hi2c->pBuffPtr; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } -} - -/** - * @brief Handle RXNE flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - - if (hi2c->XferCount != 0U) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - - if ((hi2c->XferCount == 0U) && (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN)) - { - /* Last Byte is received, disable Interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); - - /* Set state at HAL_I2C_STATE_LISTEN */ - hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX; - hi2c->State = HAL_I2C_STATE_LISTEN; - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->SlaveRxCpltCallback(hi2c); -#else - HAL_I2C_SlaveRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } -} - -/** - * @brief Handle BTF flag for Slave receiver - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c) -{ - if (hi2c->XferCount != 0U) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } -} - -/** - * @brief Handle ADD flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @param IT2Flags Interrupt2 flags to handle. - * @retval None - */ -static void I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c, uint32_t IT2Flags) -{ - uint8_t TransferDirection = I2C_DIRECTION_RECEIVE; - uint16_t SlaveAddrCode; - - if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN) - { - /* Disable BUF interrupt, BUF enabling is manage through slave specific interface */ - __HAL_I2C_DISABLE_IT(hi2c, (I2C_IT_BUF)); - - /* Transfer Direction requested by Master */ - if (I2C_CHECK_FLAG(IT2Flags, I2C_FLAG_TRA) == RESET) - { - TransferDirection = I2C_DIRECTION_TRANSMIT; - } - - if (I2C_CHECK_FLAG(IT2Flags, I2C_FLAG_DUALF) == RESET) - { - SlaveAddrCode = (uint16_t)hi2c->Init.OwnAddress1; - } - else - { - SlaveAddrCode = (uint16_t)hi2c->Init.OwnAddress2; - } - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - /* Call Slave Addr callback */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->AddrCallback(hi2c, TransferDirection, SlaveAddrCode); -#else - HAL_I2C_AddrCallback(hi2c, TransferDirection, SlaveAddrCode); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR); - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - } -} - -/** - * @brief Handle STOPF flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Clear STOPF flag */ - __HAL_I2C_CLEAR_STOPFLAG(hi2c); - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* If a DMA is ongoing, Update handle size context */ - if ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - if ((CurrentState == HAL_I2C_STATE_BUSY_RX) || (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN)) - { - hi2c->XferCount = (uint16_t)(__HAL_DMA_GET_COUNTER(hi2c->hdmarx)); - - if (hi2c->XferCount != 0U) - { - /* Set ErrorCode corresponding to a Non-Acknowledge */ - hi2c->ErrorCode |= HAL_I2C_ERROR_AF; - } - - /* Disable, stop the current DMA */ - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - /* Abort DMA Xfer if any */ - if (HAL_DMA_GetState(hi2c->hdmarx) != HAL_DMA_STATE_READY) - { - /* Set the I2C DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort; - - /* Abort DMA RX */ - if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK) - { - /* Call Directly XferAbortCallback function in case of error */ - hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx); - } - } - } - else - { - hi2c->XferCount = (uint16_t)(__HAL_DMA_GET_COUNTER(hi2c->hdmatx)); - - if (hi2c->XferCount != 0U) - { - /* Set ErrorCode corresponding to a Non-Acknowledge */ - hi2c->ErrorCode |= HAL_I2C_ERROR_AF; - } - - /* Disable, stop the current DMA */ - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - /* Abort DMA Xfer if any */ - if (HAL_DMA_GetState(hi2c->hdmatx) != HAL_DMA_STATE_READY) - { - /* Set the I2C DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort; - - /* Abort DMA TX */ - if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK) - { - /* Call Directly XferAbortCallback function in case of error */ - hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx); - } - } - } - } - - /* All data are not transferred, so set error code accordingly */ - if (hi2c->XferCount != 0U) - { - /* Store Last receive data if any */ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } - - /* Store Last receive data if any */ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - - /* Update counter */ - hi2c->XferCount--; - } - - if (hi2c->XferCount != 0U) - { - /* Set ErrorCode corresponding to a Non-Acknowledge */ - hi2c->ErrorCode |= HAL_I2C_ERROR_AF; - } - } - - if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE) - { - /* Call the corresponding callback to inform upper layer of End of Transfer */ - I2C_ITError(hi2c); - } - else - { - if (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN) - { - /* Set state at HAL_I2C_STATE_LISTEN */ - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_LISTEN; - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->SlaveRxCpltCallback(hi2c); -#else - HAL_I2C_SlaveRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - - if (hi2c->State == HAL_I2C_STATE_LISTEN) - { - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->ListenCpltCallback(hi2c); -#else - HAL_I2C_ListenCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - if ((hi2c->PreviousState == I2C_STATE_SLAVE_BUSY_RX) || (CurrentState == HAL_I2C_STATE_BUSY_RX)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->SlaveRxCpltCallback(hi2c); -#else - HAL_I2C_SlaveRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } - } -} - -/** - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval None - */ -static void I2C_Slave_AF(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - uint32_t CurrentXferOptions = hi2c->XferOptions; - - if (((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME)) && \ - (CurrentState == HAL_I2C_STATE_LISTEN)) - { - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Clear AF flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->ListenCpltCallback(hi2c); -#else - HAL_I2C_ListenCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else if (CurrentState == HAL_I2C_STATE_BUSY_TX) - { - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - /* Clear AF flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->SlaveTxCpltCallback(hi2c); -#else - HAL_I2C_SlaveTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - /* Clear AF flag only */ - /* State Listen, but XferOptions == FIRST or NEXT */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - } -} - -/** - * @brief I2C interrupts error process - * @param hi2c I2C handle. - * @retval None - */ -static void I2C_ITError(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - - if ((hi2c->Mode == HAL_I2C_MODE_MASTER) && (CurrentState == HAL_I2C_STATE_BUSY_RX)) - { - /* Disable Pos bit in I2C CR1 when error occurred in Master/Mem Receive IT Process */ - hi2c->Instance->CR1 &= ~I2C_CR1_POS; - } - - if (((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN) - { - /* keep HAL_I2C_STATE_LISTEN */ - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_LISTEN; - } - else - { - /* If state is an abort treatment on going, don't change state */ - /* This change will be do later */ - if ((READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) != I2C_CR2_DMAEN) && (CurrentState != HAL_I2C_STATE_ABORT)) - { - hi2c->State = HAL_I2C_STATE_READY; - } - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->Mode = HAL_I2C_MODE_NONE; - } - - /* Abort DMA transfer */ - if (READ_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN; - - if (hi2c->hdmatx->State != HAL_DMA_STATE_READY) - { - /* Set the DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort; - - if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK) - { - /* Disable I2C peripheral to prevent dummy data in buffer */ - __HAL_I2C_DISABLE(hi2c); - - hi2c->State = HAL_I2C_STATE_READY; - - /* Call Directly XferAbortCallback function in case of error */ - hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx); - } - } - else - { - /* Set the DMA Abort callback : - will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */ - hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort; - - if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK) - { - /* Store Last receive data if any */ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - } - - /* Disable I2C peripheral to prevent dummy data in buffer */ - __HAL_I2C_DISABLE(hi2c); - - hi2c->State = HAL_I2C_STATE_READY; - - /* Call Directly hi2c->hdmarx->XferAbortCallback function in case of error */ - hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx); - } - } - } - else if (hi2c->State == HAL_I2C_STATE_ABORT) - { - hi2c->State = HAL_I2C_STATE_READY; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Store Last receive data if any */ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - } - - /* Disable I2C peripheral to prevent dummy data in buffer */ - __HAL_I2C_DISABLE(hi2c); - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->AbortCpltCallback(hi2c); -#else - HAL_I2C_AbortCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - /* Store Last receive data if any */ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) - { - /* Read data from DR */ - *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->DR; - - /* Increment Buffer pointer */ - hi2c->pBuffPtr++; - } - - /* Call user error callback */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->ErrorCallback(hi2c); -#else - HAL_I2C_ErrorCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - /* STOP Flag is not set after a NACK reception */ - /* So may inform upper layer that listen phase is stopped */ - /* during NACK error treatment */ - CurrentState = hi2c->State; - if (((hi2c->ErrorCode & HAL_I2C_ERROR_AF) == HAL_I2C_ERROR_AF) && (CurrentState == HAL_I2C_STATE_LISTEN)) - { - /* Disable EVT, BUF and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR); - - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->ListenCpltCallback(hi2c); -#else - HAL_I2C_ListenCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } -} - -/** - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart) -{ - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - uint32_t CurrentXferOptions = hi2c->XferOptions; - - /* Generate Start condition if first transfer */ - if ((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - else if (hi2c->PreviousState == I2C_STATE_MASTER_BUSY_RX) - { - /* Generate ReStart */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - else - { - /* Do nothing */ - } - - /* Wait until SB flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) - { - /* Send slave address */ - hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); - } - else - { - /* Send header of slave address */ - hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress); - - /* Wait until ADD10 flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Send slave address */ - hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress); - } - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - return HAL_OK; -} - -/** - * @brief Master sends target device address for read request. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout, uint32_t Tickstart) -{ - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - uint32_t CurrentXferOptions = hi2c->XferOptions; - - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start condition if first transfer */ - if ((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_FIRST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME)) - { - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - else if (hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) - { - /* Generate ReStart */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - } - else - { - /* Do nothing */ - } - - /* Wait until SB flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT) - { - /* Send slave address */ - hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress); - } - else - { - /* Send header of slave address */ - hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress); - - /* Wait until ADD10 flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Send slave address */ - hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress); - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Restart */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Wait until SB flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Send header of slave address */ - hi2c->Instance->DR = I2C_10BIT_HEADER_READ(DevAddress); - } - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - return HAL_OK; -} - -/** - * @brief Master sends target device address followed by internal memory address for write request. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart) -{ - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Wait until SB flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Send slave address */ - hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* If Memory address size is 8Bit */ - if (MemAddSize == I2C_MEMADD_SIZE_8BIT) - { - /* Send Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); - } - /* If Memory address size is 16Bit */ - else - { - /* Send MSB of Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress); - - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* Send LSB of Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); - } - - return HAL_OK; -} - -/** - * @brief Master sends target device address followed by internal memory address for read request. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @param DevAddress Target device address: The device 7 bits address value - * in datasheet must be shifted to the left before calling the interface - * @param MemAddress Internal memory address - * @param MemAddSize Size of internal memory address - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart) -{ - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* Generate Start */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Wait until SB flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Send slave address */ - hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress); - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* If Memory address size is 8Bit */ - if (MemAddSize == I2C_MEMADD_SIZE_8BIT) - { - /* Send Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); - } - /* If Memory address size is 16Bit */ - else - { - /* Send MSB of Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress); - - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* Send LSB of Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress); - } - - /* Wait until TXE flag is set */ - if (I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) - { - if (hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - return HAL_ERROR; - } - - /* Generate Restart */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_START); - - /* Wait until SB flag is set */ - if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - /* Send slave address */ - hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress); - - /* Wait until ADDR flag is set */ - if (I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout, Tickstart) != HAL_OK) - { - return HAL_ERROR; - } - - return HAL_OK; -} - -/** - * @brief DMA I2C process complete callback. - * @param hdma DMA handle - * @retval None - */ -static void I2C_DMAXferCplt(DMA_HandleTypeDef *hdma) -{ - I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */ - - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - HAL_I2C_ModeTypeDef CurrentMode = hi2c->Mode; - uint32_t CurrentXferOptions = hi2c->XferOptions; - - /* Disable EVT and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Clear Complete callback */ - hi2c->hdmatx->XferCpltCallback = NULL; - hi2c->hdmarx->XferCpltCallback = NULL; - - if ((((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_BUSY_TX) == (uint32_t)HAL_I2C_STATE_BUSY_TX) || ((((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_BUSY_RX) == (uint32_t)HAL_I2C_STATE_BUSY_RX) && (CurrentMode == HAL_I2C_MODE_SLAVE))) - { - /* Disable DMA Request */ - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - hi2c->XferCount = 0U; - - if (CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN) - { - /* Set state at HAL_I2C_STATE_LISTEN */ - hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX; - hi2c->State = HAL_I2C_STATE_LISTEN; - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->SlaveTxCpltCallback(hi2c); -#else - HAL_I2C_SlaveTxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else if (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN) - { - /* Set state at HAL_I2C_STATE_LISTEN */ - hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX; - hi2c->State = HAL_I2C_STATE_LISTEN; - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->SlaveRxCpltCallback(hi2c); -#else - HAL_I2C_SlaveRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - /* Do nothing */ - } - - /* Enable EVT and ERR interrupt to treat end of transfer in IRQ handler */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - } - /* Check current Mode, in case of treatment DMA handler have been preempted by a prior interrupt */ - else if (hi2c->Mode != HAL_I2C_MODE_NONE) - { - if (hi2c->XferCount == (uint16_t)1) - { - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - } - - /* Disable EVT and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Prepare next transfer or stop current transfer */ - if ((CurrentXferOptions == I2C_NO_OPTION_FRAME) || (CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_OTHER_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME)) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - } - - /* Disable Last DMA */ - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_LAST); - - /* Disable DMA Request */ - CLEAR_BIT(hi2c->Instance->CR2, I2C_CR2_DMAEN); - - hi2c->XferCount = 0U; - - /* Check if Errors has been detected during transfer */ - if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE) - { -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->ErrorCallback(hi2c); -#else - HAL_I2C_ErrorCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - hi2c->State = HAL_I2C_STATE_READY; - - if (hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->PreviousState = I2C_STATE_NONE; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MemRxCpltCallback(hi2c); -#else - HAL_I2C_MemRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->MasterRxCpltCallback(hi2c); -#else - HAL_I2C_MasterRxCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - } - } - else - { - /* Do nothing */ - } -} - -/** - * @brief DMA I2C communication error callback. - * @param hdma DMA handle - * @retval None - */ -static void I2C_DMAError(DMA_HandleTypeDef *hdma) -{ - I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */ - - /* Clear Complete callback */ - hi2c->hdmatx->XferCpltCallback = NULL; - hi2c->hdmarx->XferCpltCallback = NULL; - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - hi2c->XferCount = 0U; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_DMA; - -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->ErrorCallback(hi2c); -#else - HAL_I2C_ErrorCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ -} - -/** - * @brief DMA I2C communication abort callback - * (To be called at end of DMA Abort procedure). - * @param hdma DMA handle. - * @retval None - */ -static void I2C_DMAAbort(DMA_HandleTypeDef *hdma) -{ - I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; /* Derogation MISRAC2012-Rule-11.5 */ - - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - HAL_I2C_StateTypeDef CurrentState = hi2c->State; - - /* Clear Complete callback */ - hi2c->hdmatx->XferCpltCallback = NULL; - hi2c->hdmarx->XferCpltCallback = NULL; - - /* Disable Acknowledge */ - CLEAR_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - hi2c->XferCount = 0U; - - /* Reset XferAbortCallback */ - hi2c->hdmatx->XferAbortCallback = NULL; - hi2c->hdmarx->XferAbortCallback = NULL; - - /* Disable I2C peripheral to prevent dummy data in buffer */ - __HAL_I2C_DISABLE(hi2c); - - /* Check if come from abort from user */ - if (hi2c->State == HAL_I2C_STATE_ABORT) - { - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode = HAL_I2C_ERROR_NONE; - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->AbortCpltCallback(hi2c); -#else - HAL_I2C_AbortCpltCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } - else - { - if (((uint32_t)CurrentState & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN) - { - /* Renable I2C peripheral */ - __HAL_I2C_ENABLE(hi2c); - - /* Enable Acknowledge */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_ACK); - - /* keep HAL_I2C_STATE_LISTEN */ - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_LISTEN; - } - else - { - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - } - - /* Call the corresponding callback to inform upper layer of End of Transfer */ -#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1) - hi2c->ErrorCallback(hi2c); -#else - HAL_I2C_ErrorCallback(hi2c); -#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */ - } -} - -/** - * @brief This function handles I2C Communication Timeout. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @param Flag specifies the I2C flag to check. - * @param Status The new Flag status (SET or RESET). - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart) -{ - /* Wait until flag is set */ - while (__HAL_I2C_GET_FLAG(hi2c, Flag) == Status) - { - /* Check for the Timeout */ - if (Timeout != HAL_MAX_DELAY) - { - if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - } - return HAL_OK; -} - -/** - * @brief This function handles I2C Communication Timeout for Master addressing phase. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @param Flag specifies the I2C flag to check. - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout, uint32_t Tickstart) -{ - while (__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET) - { - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) - { - /* Generate Stop */ - SET_BIT(hi2c->Instance->CR1, I2C_CR1_STOP); - - /* Clear AF Flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_AF; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - - /* Check for the Timeout */ - if (Timeout != HAL_MAX_DELAY) - { - if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - } - return HAL_OK; -} - -/** - * @brief This function handles I2C Communication Timeout for specific usage of TXE flag. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_WaitOnTXEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) -{ - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE) == RESET) - { - /* Check if a NACK is detected */ - if (I2C_IsAcknowledgeFailed(hi2c) != HAL_OK) - { - return HAL_ERROR; - } - - /* Check for the Timeout */ - if (Timeout != HAL_MAX_DELAY) - { - if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - } - return HAL_OK; -} - -/** - * @brief This function handles I2C Communication Timeout for specific usage of BTF flag. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_WaitOnBTFFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) -{ - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == RESET) - { - /* Check if a NACK is detected */ - if (I2C_IsAcknowledgeFailed(hi2c) != HAL_OK) - { - return HAL_ERROR; - } - - /* Check for the Timeout */ - if (Timeout != HAL_MAX_DELAY) - { - if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - } - return HAL_OK; -} - -/** - * @brief This function handles I2C Communication Timeout for specific usage of STOP flag. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) -{ - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET) - { - /* Check if a NACK is detected */ - if (I2C_IsAcknowledgeFailed(hi2c) != HAL_OK) - { - return HAL_ERROR; - } - - /* Check for the Timeout */ - if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - return HAL_OK; -} - -/** - * @brief This function handles I2C Communication Timeout for specific usage of RXNE flag. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @param Timeout Timeout duration - * @param Tickstart Tick start value - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart) -{ - - while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == RESET) - { - /* Check if a STOPF is detected */ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET) - { - /* Clear STOP Flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF); - - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - - /* Check for the Timeout */ - if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - } - return HAL_OK; -} - -/** - * @brief This function handles Acknowledge failed detection during an I2C Communication. - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for the specified I2C. - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c) -{ - if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET) - { - /* Clear NACKF Flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - hi2c->ErrorCode |= HAL_I2C_ERROR_AF; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - return HAL_OK; -} - -/** - * @brief Convert I2Cx OTHER_xxx XferOptions to functionnal XferOptions. - * @param hi2c I2C handle. - * @retval None - */ -static void I2C_ConvertOtherXferOptions(I2C_HandleTypeDef *hi2c) -{ - /* if user set XferOptions to I2C_OTHER_FRAME */ - /* it request implicitly to generate a restart condition */ - /* set XferOptions to I2C_FIRST_FRAME */ - if (hi2c->XferOptions == I2C_OTHER_FRAME) - { - hi2c->XferOptions = I2C_FIRST_FRAME; - } - /* else if user set XferOptions to I2C_OTHER_AND_LAST_FRAME */ - /* it request implicitly to generate a restart condition */ - /* then generate a stop condition at the end of transfer */ - /* set XferOptions to I2C_FIRST_AND_LAST_FRAME */ - else if (hi2c->XferOptions == I2C_OTHER_AND_LAST_FRAME) - { - hi2c->XferOptions = I2C_FIRST_AND_LAST_FRAME; - } - else - { - /* Nothing to do */ - } -} - -/** - * @} - */ - -#endif /* HAL_I2C_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3-70-g09d2