From 893acdb56bddbe8c24b51050187325f71e439798 Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Sun, 21 Jul 2019 20:29:14 -0400 Subject: lib: Update stm32f1 code to version 1.8.0 Update the stm32f1 code to the latest from ST. Merge the lib/cmsis-stm32f1/ and lib/hal-stm32f1/ into a single lib/stm32f1/ directory. Document all the differences from the pristine upstream code. Signed-off-by: Kevin O'Connor --- lib/hal-stm32f1/source/stm32f1xx_hal_i2c.c | 5575 ---------------------------- 1 file changed, 5575 deletions(-) delete mode 100644 lib/hal-stm32f1/source/stm32f1xx_hal_i2c.c (limited to 'lib/hal-stm32f1/source/stm32f1xx_hal_i2c.c') diff --git a/lib/hal-stm32f1/source/stm32f1xx_hal_i2c.c b/lib/hal-stm32f1/source/stm32f1xx_hal_i2c.c deleted file mode 100644 index 0f4305b6..00000000 --- a/lib/hal-stm32f1/source/stm32f1xx_hal_i2c.c +++ /dev/null @@ -1,5575 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f1xx_hal_i2c.c - * @author MCD Application Team - * @version V1.1.1 - * @date 12-May-2017 - * @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 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 HAL_I2C_Init(), configures also the low level Hardware - (GPIO, CLOCK, NVIC...etc) by calling the customized HAL_I2C_MspInit(&hi2c) API. - - (#) To check if target device is ready for communication, use the function 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 HAL_I2C_Master_Transmit() - (+) Receive in master mode an amount of data in blocking mode using HAL_I2C_Master_Receive() - (+) Transmit in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Transmit() - (+) Receive in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Receive() - - *** Polling mode IO MEM operation *** - ===================================== - [..] - (+) Write an amount of data in blocking mode to a specific memory address using HAL_I2C_Mem_Write() - (+) Read an amount of data in blocking mode from a specific memory address using HAL_I2C_Mem_Read() - - - *** Interrupt mode IO operation *** - =================================== - [..] - (+) Transmit in master mode an amount of data in non blocking mode using HAL_I2C_Master_Transmit_IT() - (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback - (+) Receive in master mode an amount of data in non blocking mode using HAL_I2C_Master_Receive_IT() - (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback - (+) Transmit in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Transmit_IT() - (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback - (+) Receive in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Receive_IT() - (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback - (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer HAL_I2C_ErrorCallback - (+) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() - (+) End of abort process, HAL_I2C_AbortCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_AbortCpltCallback() - - *** Interrupt 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 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_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 - - (+) Differents sequential I2C interfaces are listed below: - (++) Sequential transmit in master I2C mode an amount of data in non-blocking mode using HAL_I2C_Master_Sequential_Transmit_IT() - (+++) At transmission end of current frame transfer, HAL_I2C_MasterTxCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback() - (++) Sequential receive in master I2C mode an amount of data in non-blocking mode using HAL_I2C_Master_Sequential_Receive_IT() - (+++) At reception end of current frame transfer, HAL_I2C_MasterRxCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback() - (++) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() - (+++) End of abort process, HAL_I2C_AbortCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_AbortCpltCallback() - (++) Enable/disable the Address listen mode in slave I2C mode using HAL_I2C_EnableListen_IT() HAL_I2C_DisableListen_IT() - (+++) When address slave I2C match, 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 HAL_I2C_ListenCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_ListenCpltCallback() - (++) Sequential transmit in slave I2C mode an amount of data in non-blocking mode using HAL_I2C_Slave_Sequential_Transmit_IT() - (+++) At transmission end of current frame transfer, HAL_I2C_SlaveTxCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback() - (++) Sequential receive in slave I2C mode an amount of data in non-blocking mode using HAL_I2C_Slave_Sequential_Receive_IT() - (+++) At reception end of current frame transfer, HAL_I2C_SlaveRxCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback() - (++) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer HAL_I2C_ErrorCallback() - - *** Interrupt mode IO MEM operation *** - ======================================= - [..] - (+) Write an amount of data in no-blocking mode with Interrupt to a specific memory address using - HAL_I2C_Mem_Write_IT() - (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback - (+) Read an amount of data in no-blocking mode with Interrupt from a specific memory address using - HAL_I2C_Mem_Read_IT() - (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback - (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer HAL_I2C_ErrorCallback - - *** DMA mode IO operation *** - ============================== - [..] - (+) Transmit in master mode an amount of data in non blocking mode (DMA) using - HAL_I2C_Master_Transmit_DMA() - (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback - (+) Receive in master mode an amount of data in non blocking mode (DMA) using - HAL_I2C_Master_Receive_DMA() - (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback - (+) Transmit in slave mode an amount of data in non blocking mode (DMA) using - HAL_I2C_Slave_Transmit_DMA() - (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback - (+) Receive in slave mode an amount of data in non blocking mode (DMA) using - HAL_I2C_Slave_Receive_DMA() - (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback - (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer HAL_I2C_ErrorCallback - (+) Abort a master I2C process communication with Interrupt using HAL_I2C_Master_Abort_IT() - (+) End of abort process, HAL_I2C_AbortCpltCallback() is executed and user can - add his own code by customization of function pointer HAL_I2C_AbortCpltCallback() - - *** DMA mode IO MEM operation *** - ================================= - [..] - (+) Write an amount of data in no-blocking mode with DMA to a specific memory address using - HAL_I2C_Mem_Write_DMA() - (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback - (+) Read an amount of data in no-blocking mode with DMA from a specific memory address using - HAL_I2C_Mem_Read_DMA() - (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can - add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback - (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can - add his own code by customization of function pointer HAL_I2C_ErrorCallback - - - *** I2C HAL driver macros list *** - ================================== - [..] - Below the list of most used macros in I2C HAL driver. - - (+) __HAL_I2C_ENABLE: Enable the I2C peripheral - (+) __HAL_I2C_DISABLE: Disable the I2C peripheral - (+) __HAL_I2C_GET_FLAG : Checks whether the specified I2C flag is set or not - (+) __HAL_I2C_CLEAR_FLAG : Clear the specified I2C pending flag - (+) __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt - (+) __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt - - [..] - (@) You can refer to the I2C HAL driver header file for more useful macros - - *** 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 HAL_I2C_Init. - - @endverbatim - ****************************************************************************** - * @attention - * - *

© COPYRIGHT(c) 2016 STMicroelectronics

- * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * 3. Neither the name of STMicroelectronics nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************** - */ - -/* 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)((HAL_I2C_STATE_BUSY_TX | HAL_I2C_STATE_BUSY_RX) & (~(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)((HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | HAL_I2C_MODE_MASTER)) /*!< Master Busy TX, combinaison of State LSB and Mode enum */ -#define I2C_STATE_MASTER_BUSY_RX ((uint32_t)((HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | HAL_I2C_MODE_MASTER)) /*!< Master Busy RX, combinaison of State LSB and Mode enum */ -#define I2C_STATE_SLAVE_BUSY_TX ((uint32_t)((HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | HAL_I2C_MODE_SLAVE)) /*!< Slave Busy TX, combinaison of State LSB and Mode enum */ -#define I2C_STATE_SLAVE_BUSY_RX ((uint32_t)((HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | HAL_I2C_MODE_SLAVE)) /*!< Slave Busy RX, combinaison of State LSB and Mode enum */ - -/** - * @} - */ - -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -/** @addtogroup 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); -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 HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_Master_SB(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_Master_ADD10(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_Master_ADDR(I2C_HandleTypeDef *hi2c); - -static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c); -static HAL_StatusTypeDef I2C_Slave_AF(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 - de-initialize 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 create the associated handle. - * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c) -{ - uint32_t freqrange = 0U; - uint32_t pclk1 = 0U; - - /* 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; - /* Init the low level hardware : GPIO, CLOCK, NVIC */ - HAL_I2C_MspInit(hi2c); - } - - hi2c->State = HAL_I2C_STATE_BUSY; - - /* Disable the selected I2C peripheral */ - __HAL_I2C_DISABLE(hi2c); - - /* Get PCLK1 frequency */ - pclk1 = HAL_RCC_GetPCLK1Freq(); - - /* Calculate frequency range */ - freqrange = I2C_FREQRANGE(pclk1); - - /*---------------------------- I2Cx CR2 Configuration ----------------------*/ - /* Configure I2Cx: Frequency range */ - hi2c->Instance->CR2 = freqrange; - - /*---------------------------- I2Cx TRISE Configuration --------------------*/ - /* Configure I2Cx: Rise Time */ - hi2c->Instance->TRISE = I2C_RISE_TIME(freqrange, hi2c->Init.ClockSpeed); - - /*---------------------------- I2Cx CCR Configuration ----------------------*/ - /* Configure I2Cx: Speed */ - hi2c->Instance->CCR = I2C_SPEED(pclk1, hi2c->Init.ClockSpeed, hi2c->Init.DutyCycle); - - /*---------------------------- I2Cx CR1 Configuration ----------------------*/ - /* Configure I2Cx: Generalcall and NoStretch mode */ - hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode); - - /*---------------------------- I2Cx OAR1 Configuration ---------------------*/ - /* Configure I2Cx: Own Address1 and addressing mode */ - hi2c->Instance->OAR1 = (hi2c->Init.AddressingMode | hi2c->Init.OwnAddress1); - - /*---------------------------- I2Cx OAR2 Configuration ---------------------*/ - /* Configure I2Cx: Dual mode and Own Address2 */ - hi2c->Instance->OAR2 = (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 DeInitializes the I2C peripheral. - * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @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); - - /* DeInit the low level hardware: GPIO, CLOCK, NVIC */ - HAL_I2C_MspDeInit(hi2c); - - 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 I2C MSP Init. - * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @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 I2C MSP DeInit - * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @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 - */ -} - -/** - * @} - */ - -/** @defgroup I2C_Exported_Functions_Group2 IO 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_Master_Sequential_Transmit_IT() - (++) HAL_I2C_Master_Sequential_Receive_IT() - (++) HAL_I2C_Slave_Sequential_Transmit_IT() - (++) HAL_I2C_Slave_Sequential_Receive_IT() - (++) HAL_I2C_Mem_Write_IT() - (++) HAL_I2C_Mem_Read_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() - - (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: - (++) HAL_I2C_MemTxCpltCallback() - (++) HAL_I2C_MemRxCpltCallback() - (++) HAL_I2C_MasterTxCpltCallback() - (++) HAL_I2C_MasterRxCpltCallback() - (++) HAL_I2C_SlaveTxCpltCallback() - (++) HAL_I2C_SlaveRxCpltCallback() - (++) 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 shift at right before call 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) -{ - uint32_t tickstart = 0x00U; - - /* Init tickstart for timeout management*/ - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* Send Slave Address */ - if(I2C_MasterRequestWrite(hi2c, DevAddress, Timeout, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_ERROR; - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_TIMEOUT; - } - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* Write data to DR */ - hi2c->Instance->DR = (*hi2c->pBuffPtr++); - 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++); - 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - } - - /* Generate Stop */ - 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 shift at right before call 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) -{ - uint32_t tickstart = 0x00U; - - /* Init tickstart for timeout management*/ - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* Send Slave Address */ - if(I2C_MasterRequestRead(hi2c, DevAddress, Timeout, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_ERROR; - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_TIMEOUT; - } - } - - if(hi2c->XferSize == 0U) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - } - else if(hi2c->XferSize == 1U) - { - /* Disable Acknowledge */ - 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Re-enable IRQs */ - __enable_irq(); - } - else if(hi2c->XferSize == 2U) - { - /* Enable Pos */ - 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 */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - /* Re-enable IRQs */ - __enable_irq(); - } - else - { - /* Enable Acknowledge */ - 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) - { - return HAL_TIMEOUT; - } - else - { - return HAL_ERROR; - } - } - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - 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_TIMEOUT; - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - 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_TIMEOUT; - } - - /* Disable Acknowledge */ - 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++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - /* Wait until BTF flag is set */ - if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - } - } - else - { - /* Wait until RXNE flag is set */ - if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) - { - return HAL_TIMEOUT; - } - else - { - return HAL_ERROR; - } - } - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - 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) -{ - uint32_t tickstart = 0x00U; - - /* Init tickstart for timeout management*/ - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* Enable Address Acknowledge */ - 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_TIMEOUT; - } - - /* 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_TIMEOUT; - } - - /* 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 */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* Write data to DR */ - hi2c->Instance->DR = (*hi2c->pBuffPtr++); - 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++); - hi2c->XferCount--; - hi2c->XferSize--; - } - } - - /* Wait until AF flag is set */ - if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Clear AF flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - /* Disable Address Acknowledge */ - 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) -{ - uint32_t tickstart = 0x00U; - - /* Init tickstart for timeout management*/ - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* Enable Address Acknowledge */ - 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_TIMEOUT; - } - - /* 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 */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) - { - return HAL_TIMEOUT; - } - else - { - return HAL_ERROR; - } - } - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0U)) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - } - } - - /* Wait until STOP flag is set */ - if(I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - /* Disable Address Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* Clear STOP flag */ - __HAL_I2C_CLEAR_STOPFLAG(hi2c); - - /* Disable Address Acknowledge */ - 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 shift at right before call 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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - hi2c->Devaddress = DevAddress; - - /* Generate Start */ - 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 shift at right before call 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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - hi2c->Devaddress = DevAddress; - - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - 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 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 shift at right before call 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_Sequential_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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = XferOptions; - hi2c->XferSize = hi2c->XferCount; - hi2c->Devaddress = DevAddress; - - Prev_State = hi2c->PreviousState; - - /* Generate Start */ - if((Prev_State == I2C_STATE_MASTER_BUSY_RX) || (Prev_State == I2C_STATE_NONE)) - { - /* Generate Start condition if first transfer */ - if((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME)) - { - /* Generate Start */ - hi2c->Instance->CR1 |= I2C_CR1_START; - } - else - { - /* Generate ReStart */ - 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 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 shift at right before call 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_Sequential_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions) -{ - __IO uint32_t count = 0U; - - /* 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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = XferOptions; - hi2c->XferSize = hi2c->XferCount; - hi2c->Devaddress = DevAddress; - - if((hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) || (hi2c->PreviousState == I2C_STATE_NONE)) - { - /* Generate Start condition if first transfer */ - if((XferOptions == I2C_FIRST_AND_LAST_FRAME) || (XferOptions == I2C_FIRST_FRAME) || (XferOptions == I2C_NO_OPTION_FRAME)) - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - hi2c->Instance->CR1 |= I2C_CR1_START; - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate ReStart */ - 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) -{ - __IO uint32_t count = 0U; - - if(hi2c->State == HAL_I2C_STATE_READY) - { - if((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); - do - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* Enable Address Acknowledge */ - 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) -{ - __IO uint32_t count = 0U; - - if(hi2c->State == HAL_I2C_STATE_READY) - { - if((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); - do - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferSize = Size; - hi2c->XferCount = Size; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - - /* Enable Address Acknowledge */ - 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 Sequential transmit in slave mode an amount of data in no-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 I2C module - * @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_Sequential_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(hi2c->State == 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 */ - 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->XferOptions = XferOptions; - hi2c->XferSize = hi2c->XferCount; - - /* 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 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_Sequential_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(hi2c->State == 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 */ - 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->XferOptions = XferOptions; - hi2c->XferSize = hi2c->XferCount; - - /* 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 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 */ - 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 */ - 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 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 shift at right before call 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; - - if(hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); - do - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - 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 */ - HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - 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 */ - hi2c->Instance->CR2 |= I2C_CR2_DMAEN; - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - 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 shift at right before call 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; - - if(hi2c->State == HAL_I2C_STATE_READY) - { - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); - do - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - 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 */ - HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - 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 */ - hi2c->Instance->CR2 |= I2C_CR2_DMAEN; - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - 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 Abort a master I2C process communication with Interrupt. - * @note This abort can be called only if state is ready - * @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 shift at right before call 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 */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - /* Generate Stop */ - 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; - } -} - -/** - * @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) -{ - __IO uint32_t count = 0U; - - if(hi2c->State == HAL_I2C_STATE_READY) - { - if((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); - do - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* 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 */ - HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - /* Enable Address Acknowledge */ - 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 - { - 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) -{ - __IO uint32_t count = 0U; - - if(hi2c->State == HAL_I2C_STATE_READY) - { - if((pData == NULL) || (Size == 0U)) - { - return HAL_ERROR; - } - - /* Wait until BUSY flag is reset */ - count = I2C_TIMEOUT_BUSY_FLAG * (SystemCoreClock /25U /1000U); - do - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* 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 */ - HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - /* Enable Address Acknowledge */ - 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 - { - 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 - * @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) -{ - uint32_t tickstart = 0x00U; - - /* Init tickstart for timeout management*/ - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* Send Slave Address and Memory Address */ - if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_ERROR; - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_TIMEOUT; - } - } - - 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* Write data to DR */ - hi2c->Instance->DR = (*hi2c->pBuffPtr++); - 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++); - 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* Generate Stop */ - 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 - * @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) -{ - uint32_t tickstart = 0x00U; - - /* Init tickstart for timeout management*/ - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - /* Send Slave Address and Memory Address */ - if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_ERROR; - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_TIMEOUT; - } - } - - if(hi2c->XferSize == 0U) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - } - else if(hi2c->XferSize == 1U) - { - /* Disable Acknowledge */ - 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Re-enable IRQs */ - __enable_irq(); - } - else if(hi2c->XferSize == 2U) - { - /* Enable Pos */ - 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 */ - 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) - { - return HAL_TIMEOUT; - } - else - { - return HAL_ERROR; - } - } - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - 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_TIMEOUT; - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - 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_TIMEOUT; - } - - /* Disable Acknowledge */ - 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++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - /* Wait until BTF flag is set */ - if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout, tickstart) != HAL_OK) - { - return HAL_TIMEOUT; - } - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - /* Re-enable IRQs */ - __enable_irq(); - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - } - } - else - { - /* Wait until RXNE flag is set */ - if(I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_TIMEOUT) - { - return HAL_TIMEOUT; - } - else - { - return HAL_ERROR; - } - } - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferSize--; - hi2c->XferCount--; - - if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - 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 - * @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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferSize = Size; - hi2c->XferCount = Size; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - hi2c->Memaddress = MemAddress; - hi2c->MemaddSize = MemAddSize; - hi2c->EventCount = 0U; - - /* Generate Start */ - 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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferSize = Size; - hi2c->XferCount = Size; - hi2c->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->Devaddress = DevAddress; - hi2c->Memaddress = MemAddress; - hi2c->MemaddSize = MemAddSize; - hi2c->EventCount = 0U; - - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - 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 - * @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; - - uint32_t tickstart = 0x00U; - - /* Init tickstart for timeout management*/ - 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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferSize = Size; - hi2c->XferCount = Size; - 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 */ - HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->DR, hi2c->XferSize); - - /* Send Slave Address and Memory Address */ - if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_ERROR; - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_TIMEOUT; - } - } - - /* 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; - } - return HAL_OK; - } - 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 - * @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) -{ - uint32_t tickstart = 0x00U; - __IO uint32_t count = 0U; - - /* Init tickstart for timeout management*/ - 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 - { - if(count-- == 0U) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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 */ - 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->XferOptions = I2C_NO_OPTION_FRAME; - hi2c->XferSize = hi2c->XferCount; - - 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->XferAbortCallback = NULL; - - /* Enable the DMA channel */ - HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize); - - /* Send Slave Address and Memory Address */ - if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_ERROR; - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_TIMEOUT; - } - } - - if(Size == 1U) - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - } - else - { - /* Enable Last DMA 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 - { - /* Send Slave Address and Memory Address */ - if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_ERROR; - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - return HAL_TIMEOUT; - } - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - 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 - * @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) -{ - uint32_t tickstart = 0U, tmp1 = 0U, tmp2 = 0U, tmp3 = 0U, I2C_Trials = 1U; - - /* Get tick */ - 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 */ - 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 */ - 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_TIMEOUT; - } - - /* 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); - tmp3 = hi2c->State; - while((tmp1 == RESET) && (tmp2 == RESET) && (tmp3 != HAL_I2C_STATE_TIMEOUT)) - { - if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout)) - { - hi2c->State = HAL_I2C_STATE_TIMEOUT; - } - tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR); - tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF); - tmp3 = hi2c->State; - } - - 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 */ - 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_TIMEOUT; - } - - hi2c->State = HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_OK; - } - else - { - /* Generate Stop */ - 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_TIMEOUT; - } - } - }while(I2C_Trials++ < Trials); - - hi2c->State = HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - else - { - return HAL_BUSY; - } -} - -/** - * @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 sr2itflags = READ_REG(hi2c->Instance->SR2); - uint32_t sr1itflags = READ_REG(hi2c->Instance->SR1); - uint32_t itsources = READ_REG(hi2c->Instance->CR2); - - uint32_t CurrentMode = hi2c->Mode; - - /* Master or Memory mode selected */ - if((CurrentMode == HAL_I2C_MODE_MASTER) || (CurrentMode == HAL_I2C_MODE_MEM)) - { - /* SB Set ----------------------------------------------------------------*/ - if(((sr1itflags & I2C_FLAG_SB) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_Master_SB(hi2c); - } - /* ADD10 Set -------------------------------------------------------------*/ - else if(((sr1itflags & I2C_FLAG_ADD10) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_Master_ADD10(hi2c); - } - /* ADDR Set --------------------------------------------------------------*/ - else if(((sr1itflags & I2C_FLAG_ADDR) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_Master_ADDR(hi2c); - } - - /* I2C in mode Transmitter -----------------------------------------------*/ - if((sr2itflags & I2C_FLAG_TRA) != RESET) - { - /* TXE set and BTF reset -----------------------------------------------*/ - if(((sr1itflags & I2C_FLAG_TXE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) - { - I2C_MasterTransmit_TXE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_MasterTransmit_BTF(hi2c); - } - } - /* I2C in mode Receiver --------------------------------------------------*/ - else - { - /* RXNE set and BTF reset -----------------------------------------------*/ - if(((sr1itflags & I2C_FLAG_RXNE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) - { - I2C_MasterReceive_RXNE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_MasterReceive_BTF(hi2c); - } - } - } - /* Slave mode selected */ - else - { - /* ADDR set --------------------------------------------------------------*/ - if(((sr1itflags & I2C_FLAG_ADDR) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_Slave_ADDR(hi2c); - } - /* STOPF set --------------------------------------------------------------*/ - else if(((sr1itflags & I2C_FLAG_STOPF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_Slave_STOPF(hi2c); - } - /* I2C in mode Transmitter -----------------------------------------------*/ - else if((sr2itflags & I2C_FLAG_TRA) != RESET) - { - /* TXE set and BTF reset -----------------------------------------------*/ - if(((sr1itflags & I2C_FLAG_TXE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) - { - I2C_SlaveTransmit_TXE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_SlaveTransmit_BTF(hi2c); - } - } - /* I2C in mode Receiver --------------------------------------------------*/ - else - { - /* RXNE set and BTF reset ----------------------------------------------*/ - if(((sr1itflags & I2C_FLAG_RXNE) != RESET) && ((itsources & I2C_IT_BUF) != RESET) && ((sr1itflags & I2C_FLAG_BTF) == RESET)) - { - I2C_SlaveReceive_RXNE(hi2c); - } - /* BTF set -------------------------------------------------------------*/ - else if(((sr1itflags & I2C_FLAG_BTF) != RESET) && ((itsources & I2C_IT_EVT) != RESET)) - { - I2C_SlaveReceive_BTF(hi2c); - } - } - } -} - -/** - * @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) -{ - uint32_t tmp1 = 0U, tmp2 = 0U, tmp3 = 0U, tmp4 = 0U; - uint32_t sr1itflags = READ_REG(hi2c->Instance->SR1); - uint32_t itsources = READ_REG(hi2c->Instance->CR2); - - /* I2C Bus error interrupt occurred ----------------------------------------*/ - if(((sr1itflags & I2C_FLAG_BERR) != RESET) && ((itsources & I2C_IT_ERR) != RESET)) - { - hi2c->ErrorCode |= 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 Loss error interrupt occurred ---------------------------*/ - if(((sr1itflags & I2C_FLAG_ARLO) != RESET) && ((itsources & I2C_IT_ERR) != RESET)) - { - hi2c->ErrorCode |= HAL_I2C_ERROR_ARLO; - - /* Clear ARLO flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO); - } - - /* I2C Acknowledge failure error interrupt occurred ------------------------*/ - if(((sr1itflags & I2C_FLAG_AF) != RESET) && ((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 - { - hi2c->ErrorCode |= 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); - } - - /* Clear AF flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - } - } - - /* I2C Over-Run/Under-Run interrupt occurred -------------------------------*/ - if(((sr1itflags & I2C_FLAG_OVR) != RESET) && ((itsources & I2C_IT_ERR) != RESET)) - { - hi2c->ErrorCode |= 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(hi2c->ErrorCode != HAL_I2C_ERROR_NONE) - { - 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 can 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 can 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 can 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 can 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_XferOptions_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 can 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 can 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 can 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 can 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 can 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 and Errors functions - * -@verbatim - =============================================================================== - ##### Peripheral State, Mode and Error functions ##### - =============================================================================== - [..] - This subsection permits 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 Return 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; -} - -/** - * @} - */ - -/** - * @brief Handle TXE flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - uint32_t CurrentState = hi2c->State; - uint32_t 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; - - HAL_I2C_MasterTxCpltCallback(hi2c); - } - 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 */ - 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; - HAL_I2C_MemTxCpltCallback(hi2c); - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - HAL_I2C_MasterTxCpltCallback(hi2c); - } - } - } - 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 == 0) - { - /* 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 += 2; - } - /* 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 == 1) - { - /* Send LSB of Memory Address */ - hi2c->Instance->DR = I2C_MEM_ADD_LSB(hi2c->Memaddress); - - hi2c->EventCount++; - } - else if(hi2c->EventCount == 2) - { - 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++); - hi2c->XferCount--; - } - } - } - else - { - /* Write data to DR */ - hi2c->Instance->DR = (*hi2c->pBuffPtr++); - hi2c->XferCount--; - } - } - } - return HAL_OK; -} - -/** - * @brief Handle BTF flag for Master transmitter - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef 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++); - 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; - - HAL_I2C_MasterTxCpltCallback(hi2c); - } - 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 */ - 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; - - HAL_I2C_MemTxCpltCallback(hi2c); - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - - HAL_I2C_MasterTxCpltCallback(hi2c); - } - } - } - } - return HAL_OK; -} - -/** - * @brief Handle RXNE flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c) -{ - if(hi2c->State == HAL_I2C_STATE_BUSY_RX) - { - uint32_t tmp = 0U; - - tmp = hi2c->XferCount; - if(tmp > 3U) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferCount--; - } - else if((tmp == 2U) || (tmp == 3U)) - { - if(hi2c->XferOptions != I2C_NEXT_FRAME) - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - /* Enable Pos */ - hi2c->Instance->CR1 |= I2C_CR1_POS; - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - } - - /* Disable BUF interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF); - } - else - { - if(hi2c->XferOptions != I2C_NEXT_FRAME) - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - } - else - { - /* Enable Acknowledge */ - 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++) = hi2c->Instance->DR; - hi2c->XferCount--; - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->PreviousState = I2C_STATE_NONE; - - if(hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; - HAL_I2C_MemRxCpltCallback(hi2c); - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - HAL_I2C_MasterRxCpltCallback(hi2c); - } - } - } - return HAL_OK; -} - -/** - * @brief Handle BTF flag for Master receiver - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef 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 == 3U) - { - if((CurrentXferOptions == I2C_FIRST_AND_LAST_FRAME) || (CurrentXferOptions == I2C_LAST_FRAME) || (CurrentXferOptions == I2C_NO_OPTION_FRAME)) - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - } - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferCount--; - } - else if(hi2c->XferCount == 2U) - { - /* Prepare next transfer or stop current transfer */ - if((CurrentXferOptions != I2C_FIRST_AND_LAST_FRAME) && (CurrentXferOptions != I2C_LAST_FRAME) && (CurrentXferOptions != I2C_NO_OPTION_FRAME)) - { - if(CurrentXferOptions != I2C_NEXT_FRAME) - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - } - - /* Disable EVT and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - } - else - { - /* Disable EVT and ERR interrupt */ - __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - } - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferCount--; - - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferCount--; - - hi2c->State = HAL_I2C_STATE_READY; - hi2c->PreviousState = I2C_STATE_NONE; - - if(hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; - - HAL_I2C_MemRxCpltCallback(hi2c); - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - - HAL_I2C_MasterRxCpltCallback(hi2c); - } - } - else - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferCount--; - } - return HAL_OK; -} - -/** - * @brief Handle SB flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef 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); - } - } - 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); - } - } - } - - return HAL_OK; -} - -/** - * @brief Handle ADD10 flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_Master_ADD10(I2C_HandleTypeDef *hi2c) -{ - /* Send slave address */ - hi2c->Instance->DR = I2C_10BIT_ADDRESS(hi2c->Devaddress); - - return HAL_OK; -} - -/** - * @brief Handle ADDR flag for Master - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_Master_ADDR(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - uint32_t 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 */ - hi2c->Instance->CR1 |= I2C_CR1_START; - - hi2c->EventCount++; - } - else - { - if(hi2c->XferCount == 0U) - { - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - } - else if(hi2c->XferCount == 1U) - { - if(CurrentXferOptions == I2C_NO_OPTION_FRAME) - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - if((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - /* Disable Acknowledge */ - 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 */ - 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)) - { - if(hi2c->XferOptions != I2C_NEXT_FRAME) - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - else - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - } - } - else if(hi2c->XferCount == 2U) - { - if(hi2c->XferOptions != I2C_NEXT_FRAME) - { - /* Enable Pos */ - hi2c->Instance->CR1 |= I2C_CR1_POS; - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - } - - if((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - /* Enable Last DMA bit */ - hi2c->Instance->CR2 |= I2C_CR2_LAST; - } - } - else - { - /* Enable Acknowledge */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - if((hi2c->Instance->CR2 & I2C_CR2_DMAEN) == I2C_CR2_DMAEN) - { - /* Enable Last DMA 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); - } - - return HAL_OK; -} - -/** - * @brief Handle TXE flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - uint32_t CurrentState = hi2c->State; - - if(hi2c->XferCount != 0U) - { - /* Write data to DR */ - hi2c->Instance->DR = (*hi2c->pBuffPtr++); - 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 Tx complete callback to inform upper layer of the end of receive process */ - HAL_I2C_SlaveTxCpltCallback(hi2c); - } - } - return HAL_OK; -} - -/** - * @brief Handle BTF flag for Slave transmitter - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c) -{ - if(hi2c->XferCount != 0U) - { - /* Write data to DR */ - hi2c->Instance->DR = (*hi2c->pBuffPtr++); - hi2c->XferCount--; - } - return HAL_OK; -} - -/** - * @brief Handle RXNE flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - uint32_t CurrentState = hi2c->State; - - if(hi2c->XferCount != 0U) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - 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 Rx complete callback to inform upper layer of the end of receive process */ - HAL_I2C_SlaveRxCpltCallback(hi2c); - } - } - return HAL_OK; -} - -/** - * @brief Handle BTF flag for Slave receiver - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c) -{ - if(hi2c->XferCount != 0U) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferCount--; - } - return HAL_OK; -} - -/** - * @brief Handle ADD flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c) -{ - uint8_t TransferDirection = I2C_DIRECTION_RECEIVE; - uint16_t SlaveAddrCode = 0U; - - /* Transfer Direction requested by Master */ - if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TRA) == RESET) - { - TransferDirection = I2C_DIRECTION_TRANSMIT; - } - - if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_DUALF) == RESET) - { - SlaveAddrCode = hi2c->Init.OwnAddress1; - } - else - { - SlaveAddrCode = hi2c->Init.OwnAddress2; - } - - /* Call Slave Addr callback */ - HAL_I2C_AddrCallback(hi2c, TransferDirection, SlaveAddrCode); - - return HAL_OK; -} - -/** - * @brief Handle STOPF flag for Slave - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - uint32_t 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 */ - 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((hi2c->State == HAL_I2C_STATE_BUSY_RX) || (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)) - { - hi2c->XferCount = __HAL_DMA_GET_COUNTER(hi2c->hdmarx); - } - else - { - hi2c->XferCount = __HAL_DMA_GET_COUNTER(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++) = hi2c->Instance->DR; - hi2c->XferCount--; - } - - /* Store Last receive data if any */ - if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - hi2c->XferCount--; - } - - /* 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_LISTEN ) || (CurrentState == HAL_I2C_STATE_BUSY_RX_LISTEN) || \ - (CurrentState == HAL_I2C_STATE_BUSY_TX_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 */ - HAL_I2C_ListenCpltCallback(hi2c); - } - 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; - - HAL_I2C_SlaveRxCpltCallback(hi2c); - } - } - } - return HAL_OK; -} - -/** - * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains - * the configuration information for I2C module - * @retval HAL status - */ -static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c) -{ - /* Declaration of temporary variables to prevent undefined behavior of volatile usage */ - uint32_t 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 */ - 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 */ - HAL_I2C_ListenCpltCallback(hi2c); - } - 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 */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - HAL_I2C_SlaveTxCpltCallback(hi2c); - } - else - { - /* Clear AF flag only */ - /* State Listen, but XferOptions == FIRST or NEXT */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - } - - return HAL_OK; -} - -/** - * @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 */ - uint32_t CurrentState = hi2c->State; - - if((CurrentState == HAL_I2C_STATE_BUSY_TX_LISTEN) || (CurrentState == HAL_I2C_STATE_BUSY_RX_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((hi2c->State != HAL_I2C_STATE_ABORT) && ((hi2c->Instance->CR2 & I2C_CR2_DMAEN) != I2C_CR2_DMAEN)) - { - hi2c->State = HAL_I2C_STATE_READY; - } - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->Mode = HAL_I2C_MODE_NONE; - } - - /* Disable Pos bit in I2C CR1 when error occurred in Master/Mem Receive IT Process */ - hi2c->Instance->CR1 &= ~I2C_CR1_POS; - - /* Abort DMA transfer */ - if((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++) = hi2c->Instance->DR; - } - - /* 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++) = hi2c->Instance->DR; - } - - /* 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 */ - HAL_I2C_AbortCpltCallback(hi2c); - } - else - { - /* Store Last receive data if any */ - if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) - { - /* Read data from DR */ - (*hi2c->pBuffPtr++) = hi2c->Instance->DR; - } - - /* Call user error callback */ - HAL_I2C_ErrorCallback(hi2c); - } - /* STOP Flag is not set after a NACK reception */ - /* So may inform upper layer that listen phase is stopped */ - /* during NACK error treatment */ - if((hi2c->State == HAL_I2C_STATE_LISTEN) && ((hi2c->ErrorCode & HAL_I2C_ERROR_AF) == HAL_I2C_ERROR_AF)) - { - 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 */ - HAL_I2C_ListenCpltCallback(hi2c); - } -} - -/** - * @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 shift at right before call 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 */ - hi2c->Instance->CR1 |= I2C_CR1_START; - } - else if(hi2c->PreviousState == I2C_STATE_MASTER_BUSY_RX) - { - /* Generate ReStart */ - 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_TIMEOUT; - } - - 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - 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 shift at right before call 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 */ - 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 */ - hi2c->Instance->CR1 |= I2C_CR1_START; - } - else if(hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) - { - /* Generate ReStart */ - 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_TIMEOUT; - } - - 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* Clear ADDR flag */ - __HAL_I2C_CLEAR_ADDRFLAG(hi2c); - - /* Generate Restart */ - 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_TIMEOUT; - } - - /* 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - 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 - * @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 */ - 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_TIMEOUT; - } - - /* 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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 - * @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 */ - hi2c->Instance->CR1 |= I2C_CR1_ACK; - - /* Generate Start */ - 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_TIMEOUT; - } - - /* 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - /* Generate Restart */ - 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_TIMEOUT; - } - - /* 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) - { - if(hi2c->ErrorCode == HAL_I2C_ERROR_AF) - { - return HAL_ERROR; - } - else - { - return HAL_TIMEOUT; - } - } - - 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; - - /* Declaration of temporary variable to prevent undefined behavior of volatile usage */ - uint32_t CurrentState = hi2c->State; - uint32_t CurrentMode = hi2c->Mode; - - if((CurrentState == HAL_I2C_STATE_BUSY_TX) || ((CurrentState == HAL_I2C_STATE_BUSY_RX) && (CurrentMode == HAL_I2C_MODE_SLAVE))) - { - /* Disable DMA Request */ - hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN; - - hi2c->XferCount = 0U; - - /* Enable EVT and ERR interrupt */ - __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR); - } - else - { - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - /* Generate Stop */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Disable Last DMA */ - hi2c->Instance->CR2 &= ~I2C_CR2_LAST; - - /* Disable DMA Request */ - hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN; - - hi2c->XferCount = 0U; - - /* Check if Errors has been detected during transfer */ - if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE) - { - HAL_I2C_ErrorCallback(hi2c); - } - else - { - hi2c->State = HAL_I2C_STATE_READY; - - if(hi2c->Mode == HAL_I2C_MODE_MEM) - { - hi2c->Mode = HAL_I2C_MODE_NONE; - - HAL_I2C_MemRxCpltCallback(hi2c); - } - else - { - hi2c->Mode = HAL_I2C_MODE_NONE; - - HAL_I2C_MasterRxCpltCallback(hi2c); - } - } - } -} - -/** - * @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; - - /* Disable Acknowledge */ - 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; - - HAL_I2C_ErrorCallback(hi2c); -} - -/** - * @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; - - /* Disable Acknowledge */ - hi2c->Instance->CR1 &= ~I2C_CR1_ACK; - - hi2c->XferCount = 0U; - - /* Reset XferAbortCallback */ - hi2c->hdmatx->XferAbortCallback = NULL; - hi2c->hdmarx->XferAbortCallback = NULL; - - /* 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; - - /* 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 */ - HAL_I2C_AbortCpltCallback(hi2c); - } - else - { - hi2c->State = HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* 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 */ - HAL_I2C_ErrorCallback(hi2c); - } -} - -/** - * @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) ? SET : RESET) == Status) - { - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - hi2c->Mode = HAL_I2C_MODE_NONE; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - } - - 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 */ - hi2c->Instance->CR1 |= I2C_CR1_STOP; - - /* Clear AF Flag */ - __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF); - - hi2c->ErrorCode = HAL_I2C_ERROR_AF; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - - /* Check for the Timeout */ - if(Timeout != HAL_MAX_DELAY) - { - if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout)) - { - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - } - 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((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) - { - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - } - 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((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) - { - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - } - 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((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) - { - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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->ErrorCode = HAL_I2C_ERROR_NONE; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - - /* Check for the Timeout */ - if((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout)) - { - hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_TIMEOUT; - } - } - 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->ErrorCode = HAL_I2C_ERROR_AF; - hi2c->PreviousState = I2C_STATE_NONE; - hi2c->State= HAL_I2C_STATE_READY; - - /* Process Unlocked */ - __HAL_UNLOCK(hi2c); - - return HAL_ERROR; - } - return HAL_OK; -} -/** - * @} - */ - -#endif /* HAL_I2C_MODULE_ENABLED */ - -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3-70-g09d2