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Diffstat (limited to 'lib/hal-stm32f0/source/stm32f0xx_hal_can.c')
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1 files changed, 1697 insertions, 0 deletions
diff --git a/lib/hal-stm32f0/source/stm32f0xx_hal_can.c b/lib/hal-stm32f0/source/stm32f0xx_hal_can.c new file mode 100644 index 00000000..17dede7d --- /dev/null +++ b/lib/hal-stm32f0/source/stm32f0xx_hal_can.c @@ -0,0 +1,1697 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_can.c + * @author MCD Application Team + * @brief CAN HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the Controller Area Network (CAN) peripheral: + * + Initialization and de-initialization functions + * + IO operation functions + * + Peripheral Control functions + * + Peripheral State and Error functions + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + (#) Enable the CAN controller interface clock using __HAL_RCC_CAN1_CLK_ENABLE(); + + (#) CAN pins configuration + (++) Enable the clock for the CAN GPIOs using the following function: + __HAL_RCC_GPIOx_CLK_ENABLE(); + (++) Connect and configure the involved CAN pins to AF9 using the + following function HAL_GPIO_Init(); + + (#) Initialise and configure the CAN using HAL_CAN_Init() function. + + (#) Transmit the desired CAN frame using HAL_CAN_Transmit() function. + + (#) Or transmit the desired CAN frame using HAL_CAN_Transmit_IT() function. + + (#) Receive a CAN frame using HAL_CAN_Receive() function. + + (#) Or receive a CAN frame using HAL_CAN_Receive_IT() function. + + *** Polling mode IO operation *** + ================================= + [..] + (+) Start the CAN peripheral transmission and wait the end of this operation + using HAL_CAN_Transmit(), at this stage user can specify the value of timeout + according to his end application + (+) Start the CAN peripheral reception and wait the end of this operation + using HAL_CAN_Receive(), at this stage user can specify the value of timeout + according to his end application + + *** Interrupt mode IO operation *** + =================================== + [..] + (+) Start the CAN peripheral transmission using HAL_CAN_Transmit_IT() + (+) Start the CAN peripheral reception using HAL_CAN_Receive_IT() + (+) Use HAL_CAN_IRQHandler() called under the used CAN Interrupt subroutine + (+) At CAN end of transmission HAL_CAN_TxCpltCallback() function is executed and user can + add his own code by customization of function pointer HAL_CAN_TxCpltCallback + (+) In case of CAN Error, HAL_CAN_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_CAN_ErrorCallback + + *** CAN HAL driver macros list *** + ============================================= + [..] + Below the list of most used macros in CAN HAL driver. + + (+) __HAL_CAN_ENABLE_IT: Enable the specified CAN interrupts + (+) __HAL_CAN_DISABLE_IT: Disable the specified CAN interrupts + (+) __HAL_CAN_GET_IT_SOURCE: Check if the specified CAN interrupt source is enabled or disabled + (+) __HAL_CAN_CLEAR_FLAG: Clear the CAN's pending flags + (+) __HAL_CAN_GET_FLAG: Get the selected CAN's flag status + + [..] + (@) You can refer to the CAN HAL driver header file for more useful macros + + @endverbatim + + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> + * + * 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 "stm32f0xx_hal.h" + +#ifdef HAL_CAN_MODULE_ENABLED + +#if defined(STM32F072xB) || defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F091xC) || defined(STM32F098xx) + +/** @addtogroup STM32F0xx_HAL_Driver + * @{ + */ + +/** @defgroup CAN CAN + * @brief CAN driver modules + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup CAN_Private_Constants CAN Private Constants + * @{ + */ +#define CAN_TIMEOUT_VALUE 10U +/** + * @} + */ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup CAN_Private_Functions CAN Private Functions + * @{ + */ +static HAL_StatusTypeDef CAN_Receive_IT(CAN_HandleTypeDef* hcan, uint8_t FIFONumber); +static HAL_StatusTypeDef CAN_Transmit_IT(CAN_HandleTypeDef* hcan); +/** + * @} + */ + +/* Exported functions ---------------------------------------------------------*/ + +/** @defgroup CAN_Exported_Functions CAN Exported Functions + * @{ + */ + +/** @defgroup CAN_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + ============================================================================== + ##### Initialization and de-initialization functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Initialize and configure the CAN. + (+) De-initialize the CAN. + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the CAN peripheral according to the specified + * parameters in the CAN_InitStruct. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Init(CAN_HandleTypeDef* hcan) +{ + uint32_t status = CAN_INITSTATUS_FAILED; /* Default init status */ + uint32_t tickstart = 0U; + + /* Check CAN handle */ + if(hcan == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_CAN_ALL_INSTANCE(hcan->Instance)); + assert_param(IS_FUNCTIONAL_STATE(hcan->Init.TTCM)); + assert_param(IS_FUNCTIONAL_STATE(hcan->Init.ABOM)); + assert_param(IS_FUNCTIONAL_STATE(hcan->Init.AWUM)); + assert_param(IS_FUNCTIONAL_STATE(hcan->Init.NART)); + assert_param(IS_FUNCTIONAL_STATE(hcan->Init.RFLM)); + assert_param(IS_FUNCTIONAL_STATE(hcan->Init.TXFP)); + assert_param(IS_CAN_MODE(hcan->Init.Mode)); + assert_param(IS_CAN_SJW(hcan->Init.SJW)); + assert_param(IS_CAN_BS1(hcan->Init.BS1)); + assert_param(IS_CAN_BS2(hcan->Init.BS2)); + assert_param(IS_CAN_PRESCALER(hcan->Init.Prescaler)); + + if(hcan->State == HAL_CAN_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hcan->Lock = HAL_UNLOCKED; + /* Init the low level hardware */ + HAL_CAN_MspInit(hcan); + } + + /* Initialize the CAN state*/ + hcan->State = HAL_CAN_STATE_BUSY; + + /* Exit from sleep mode */ + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_SLEEP); + + /* Request initialisation */ + SET_BIT(hcan->Instance->MCR, CAN_MCR_INRQ); + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait the acknowledge */ + while(HAL_IS_BIT_CLR(hcan->Instance->MSR, CAN_MSR_INAK)) + { + if((HAL_GetTick()-tickstart) > CAN_TIMEOUT_VALUE) + { + hcan->State= HAL_CAN_STATE_TIMEOUT; + /* Process unlocked */ + __HAL_UNLOCK(hcan); + return HAL_TIMEOUT; + } + } + + /* Check acknowledge */ + if (HAL_IS_BIT_SET(hcan->Instance->MSR, CAN_MSR_INAK)) + { + /* Set the time triggered communication mode */ + if (hcan->Init.TTCM == ENABLE) + { + SET_BIT(hcan->Instance->MCR, CAN_MCR_TTCM); + } + else + { + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_TTCM); + } + + /* Set the automatic bus-off management */ + if (hcan->Init.ABOM == ENABLE) + { + SET_BIT(hcan->Instance->MCR, CAN_MCR_ABOM); + } + else + { + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_ABOM); + } + + /* Set the automatic wake-up mode */ + if (hcan->Init.AWUM == ENABLE) + { + SET_BIT(hcan->Instance->MCR, CAN_MCR_AWUM); + } + else + { + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_AWUM); + } + + /* Set the no automatic retransmission */ + if (hcan->Init.NART == ENABLE) + { + SET_BIT(hcan->Instance->MCR, CAN_MCR_NART); + } + else + { + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_NART); + } + + /* Set the receive FIFO locked mode */ + if (hcan->Init.RFLM == ENABLE) + { + SET_BIT(hcan->Instance->MCR, CAN_MCR_RFLM); + } + else + { + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_RFLM); + } + + /* Set the transmit FIFO priority */ + if (hcan->Init.TXFP == ENABLE) + { + SET_BIT(hcan->Instance->MCR, CAN_MCR_TXFP); + } + else + { + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_TXFP); + } + + /* Set the bit timing register */ + WRITE_REG(hcan->Instance->BTR, (uint32_t)(hcan->Init.Mode | + hcan->Init.SJW | + hcan->Init.BS1 | + hcan->Init.BS2 | + (hcan->Init.Prescaler - 1U) )); + + /* Request leave initialisation */ + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_INRQ); + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait the acknowledge */ + while(HAL_IS_BIT_SET(hcan->Instance->MSR, CAN_MSR_INAK)) + { + if((HAL_GetTick()-tickstart) > CAN_TIMEOUT_VALUE) + { + hcan->State= HAL_CAN_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + return HAL_TIMEOUT; + } + } + + /* Check acknowledged */ + if(HAL_IS_BIT_CLR(hcan->Instance->MSR, CAN_MSR_INAK)) + { + status = CAN_INITSTATUS_SUCCESS; + } + } + + if(status == CAN_INITSTATUS_SUCCESS) + { + /* Set CAN error code to none */ + hcan->ErrorCode = HAL_CAN_ERROR_NONE; + + /* Initialize the CAN state */ + hcan->State = HAL_CAN_STATE_READY; + + /* Return function status */ + return HAL_OK; + } + else + { + /* Initialize the CAN state */ + hcan->State = HAL_CAN_STATE_ERROR; + + /* Return function status */ + return HAL_ERROR; + } +} + +/** + * @brief Configures the CAN reception filter according to the specified + * parameters in the CAN_FilterInitStruct. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @param sFilterConfig pointer to a CAN_FilterConfTypeDef structure that + * contains the filter configuration information. + * @retval None + */ +HAL_StatusTypeDef HAL_CAN_ConfigFilter(CAN_HandleTypeDef* hcan, CAN_FilterConfTypeDef* sFilterConfig) +{ + uint32_t filternbrbitpos = 0U; + + /* Check the parameters */ + assert_param(IS_CAN_FILTER_NUMBER(sFilterConfig->FilterNumber)); + assert_param(IS_CAN_FILTER_MODE(sFilterConfig->FilterMode)); + assert_param(IS_CAN_FILTER_SCALE(sFilterConfig->FilterScale)); + assert_param(IS_CAN_FILTER_FIFO(sFilterConfig->FilterFIFOAssignment)); + assert_param(IS_FUNCTIONAL_STATE(sFilterConfig->FilterActivation)); + assert_param(IS_CAN_BANKNUMBER(sFilterConfig->BankNumber)); + + filternbrbitpos = (1U) << sFilterConfig->FilterNumber; + + /* Initialisation mode for the filter */ + /* Select the start slave bank */ + MODIFY_REG(hcan->Instance->FMR , + CAN_FMR_CAN2SB , + CAN_FMR_FINIT | + (uint32_t)(sFilterConfig->BankNumber << 8U) ); /* Filter Deactivation */ + CLEAR_BIT(hcan->Instance->FA1R, filternbrbitpos); + + /* Filter Scale */ + if (sFilterConfig->FilterScale == CAN_FILTERSCALE_16BIT) + { + /* 16-bit scale for the filter */ + CLEAR_BIT(hcan->Instance->FS1R, filternbrbitpos); + + /* First 16-bit identifier and First 16-bit mask */ + /* Or First 16-bit identifier and Second 16-bit identifier */ + hcan->Instance->sFilterRegister[sFilterConfig->FilterNumber].FR1 = + ((0x0000FFFFU & (uint32_t)sFilterConfig->FilterMaskIdLow) << 16U) | + (0x0000FFFFU & (uint32_t)sFilterConfig->FilterIdLow); + + /* Second 16-bit identifier and Second 16-bit mask */ + /* Or Third 16-bit identifier and Fourth 16-bit identifier */ + hcan->Instance->sFilterRegister[sFilterConfig->FilterNumber].FR2 = + ((0x0000FFFFU & (uint32_t)sFilterConfig->FilterMaskIdHigh) << 16U) | + (0x0000FFFFU & (uint32_t)sFilterConfig->FilterIdHigh); + } + + if (sFilterConfig->FilterScale == CAN_FILTERSCALE_32BIT) + { + /* 32-bit scale for the filter */ + SET_BIT(hcan->Instance->FS1R, filternbrbitpos); + + /* 32-bit identifier or First 32-bit identifier */ + hcan->Instance->sFilterRegister[sFilterConfig->FilterNumber].FR1 = + ((0x0000FFFFU & (uint32_t)sFilterConfig->FilterIdHigh) << 16U) | + (0x0000FFFFU & (uint32_t)sFilterConfig->FilterIdLow); + + /* 32-bit mask or Second 32-bit identifier */ + hcan->Instance->sFilterRegister[sFilterConfig->FilterNumber].FR2 = + ((0x0000FFFFU & (uint32_t)sFilterConfig->FilterMaskIdHigh) << 16U) | + (0x0000FFFFU & (uint32_t)sFilterConfig->FilterMaskIdLow); + } + + /* Filter Mode */ + if (sFilterConfig->FilterMode == CAN_FILTERMODE_IDMASK) + { + /*Id/Mask mode for the filter*/ + CLEAR_BIT(hcan->Instance->FM1R, filternbrbitpos); + } + else /* CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdList */ + { + /*Identifier list mode for the filter*/ + SET_BIT(hcan->Instance->FM1R, filternbrbitpos); + } + + /* Filter FIFO assignment */ + if (sFilterConfig->FilterFIFOAssignment == CAN_FILTER_FIFO0) + { + /* FIFO 0 assignation for the filter */ + CLEAR_BIT(hcan->Instance->FFA1R, filternbrbitpos); + } + else + { + /* FIFO 1 assignation for the filter */ + SET_BIT(hcan->Instance->FFA1R, filternbrbitpos); + } + + /* Filter activation */ + if (sFilterConfig->FilterActivation == ENABLE) + { + SET_BIT(hcan->Instance->FA1R, filternbrbitpos); + } + + /* Leave the initialisation mode for the filter */ + CLEAR_BIT(hcan->Instance->FMR, ((uint32_t)CAN_FMR_FINIT)); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Deinitializes the CANx peripheral registers to their default reset values. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_DeInit(CAN_HandleTypeDef* hcan) +{ + /* Check CAN handle */ + if(hcan == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_CAN_ALL_INSTANCE(hcan->Instance)); + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY; + + /* DeInit the low level hardware */ + HAL_CAN_MspDeInit(hcan); + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_RESET; + + /* Release Lock */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Initializes the CAN MSP. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval None + */ +__weak void HAL_CAN_MspInit(CAN_HandleTypeDef* hcan) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcan); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_CAN_MspInit could be implemented in the user file + */ +} + +/** + * @brief DeInitializes the CAN MSP. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval None + */ +__weak void HAL_CAN_MspDeInit(CAN_HandleTypeDef* hcan) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcan); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_CAN_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup CAN_Exported_Functions_Group2 Input and Output operation functions + * @brief IO operation functions + * +@verbatim + ============================================================================== + ##### IO operation functions ##### + ============================================================================== + [..] This section provides functions allowing to: + (+) Transmit a CAN frame message. + (+) Receive a CAN frame message. + (+) Enter CAN peripheral in sleep mode. + (+) Wake up the CAN peripheral from sleep mode. + +@endverbatim + * @{ + */ + +/** + * @brief Initiates and transmits a CAN frame message. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @param Timeout Timeout duration. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Transmit(CAN_HandleTypeDef* hcan, uint32_t Timeout) +{ + uint32_t transmitmailbox = CAN_TXSTATUS_NOMAILBOX; + uint32_t tickstart = 0U; + + /* Check the parameters */ + assert_param(IS_CAN_IDTYPE(hcan->pTxMsg->IDE)); + assert_param(IS_CAN_RTR(hcan->pTxMsg->RTR)); + assert_param(IS_CAN_DLC(hcan->pTxMsg->DLC)); + + if(((hcan->Instance->TSR&CAN_TSR_TME0) == CAN_TSR_TME0) || \ + ((hcan->Instance->TSR&CAN_TSR_TME1) == CAN_TSR_TME1) || \ + ((hcan->Instance->TSR&CAN_TSR_TME2) == CAN_TSR_TME2)) + { + /* Process locked */ + __HAL_LOCK(hcan); + + /* Change CAN state */ + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_RX0): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0; + break; + case(HAL_CAN_STATE_BUSY_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX1; + break; + case(HAL_CAN_STATE_BUSY_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0_RX1; + break; + default: /* HAL_CAN_STATE_READY */ + hcan->State = HAL_CAN_STATE_BUSY_TX; + break; + } + + /* Select one empty transmit mailbox */ + if (HAL_IS_BIT_SET(hcan->Instance->TSR, CAN_TSR_TME0)) + { + transmitmailbox = CAN_TXMAILBOX_0; + } + else if (HAL_IS_BIT_SET(hcan->Instance->TSR, CAN_TSR_TME1)) + { + transmitmailbox = CAN_TXMAILBOX_1; + } + else + { + transmitmailbox = CAN_TXMAILBOX_2; + } + + /* Set up the Id */ + hcan->Instance->sTxMailBox[transmitmailbox].TIR &= CAN_TI0R_TXRQ; + if (hcan->pTxMsg->IDE == CAN_ID_STD) + { + assert_param(IS_CAN_STDID(hcan->pTxMsg->StdId)); + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= ((hcan->pTxMsg->StdId << CAN_TI0R_STID_Pos) | \ + hcan->pTxMsg->RTR); + } + else + { + assert_param(IS_CAN_EXTID(hcan->pTxMsg->ExtId)); + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= ((hcan->pTxMsg->ExtId << CAN_TI0R_EXID_Pos) | \ + hcan->pTxMsg->IDE | \ + hcan->pTxMsg->RTR); + } + + /* Set up the DLC */ + hcan->pTxMsg->DLC &= (uint8_t)0x0000000FU; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR &= 0xFFFFFFF0U; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR |= hcan->pTxMsg->DLC; + + /* Set up the data field */ + WRITE_REG(hcan->Instance->sTxMailBox[transmitmailbox].TDLR, ((uint32_t)hcan->pTxMsg->Data[3] << CAN_TDL0R_DATA3_Pos) | + ((uint32_t)hcan->pTxMsg->Data[2] << CAN_TDL0R_DATA2_Pos) | + ((uint32_t)hcan->pTxMsg->Data[1] << CAN_TDL0R_DATA1_Pos) | + ((uint32_t)hcan->pTxMsg->Data[0] << CAN_TDL0R_DATA0_Pos)); + WRITE_REG(hcan->Instance->sTxMailBox[transmitmailbox].TDHR, ((uint32_t)hcan->pTxMsg->Data[7] << CAN_TDL0R_DATA3_Pos) | + ((uint32_t)hcan->pTxMsg->Data[6] << CAN_TDL0R_DATA2_Pos) | + ((uint32_t)hcan->pTxMsg->Data[5] << CAN_TDL0R_DATA1_Pos) | + ((uint32_t)hcan->pTxMsg->Data[4] << CAN_TDL0R_DATA0_Pos)); + + /* Request transmission */ + SET_BIT(hcan->Instance->sTxMailBox[transmitmailbox].TIR, CAN_TI0R_TXRQ); + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Check End of transmission flag */ + while(!(__HAL_CAN_TRANSMIT_STATUS(hcan, transmitmailbox))) + { + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + hcan->State = HAL_CAN_STATE_TIMEOUT; + + /* Cancel transmission */ + __HAL_CAN_CANCEL_TRANSMIT(hcan, transmitmailbox); + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + return HAL_TIMEOUT; + } + } + } + + /* Change CAN state */ + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX_RX0): + hcan->State = HAL_CAN_STATE_BUSY_RX0; + break; + case(HAL_CAN_STATE_BUSY_TX_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX0_RX1; + break; + default: /* HAL_CAN_STATE_BUSY_TX */ + hcan->State = HAL_CAN_STATE_READY; + break; + } + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_OK; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_ERROR; + + /* Return function status */ + return HAL_ERROR; + } +} + +/** + * @brief Initiates and transmits a CAN frame message. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Transmit_IT(CAN_HandleTypeDef* hcan) +{ + uint32_t transmitmailbox = CAN_TXSTATUS_NOMAILBOX; + + /* Check the parameters */ + assert_param(IS_CAN_IDTYPE(hcan->pTxMsg->IDE)); + assert_param(IS_CAN_RTR(hcan->pTxMsg->RTR)); + assert_param(IS_CAN_DLC(hcan->pTxMsg->DLC)); + + if(((hcan->Instance->TSR&CAN_TSR_TME0) == CAN_TSR_TME0) || \ + ((hcan->Instance->TSR&CAN_TSR_TME1) == CAN_TSR_TME1) || \ + ((hcan->Instance->TSR&CAN_TSR_TME2) == CAN_TSR_TME2)) + { + /* Process Locked */ + __HAL_LOCK(hcan); + + /* Select one empty transmit mailbox */ + if(HAL_IS_BIT_SET(hcan->Instance->TSR, CAN_TSR_TME0)) + { + transmitmailbox = CAN_TXMAILBOX_0; + } + else if(HAL_IS_BIT_SET(hcan->Instance->TSR, CAN_TSR_TME1)) + { + transmitmailbox = CAN_TXMAILBOX_1; + } + else + { + transmitmailbox = CAN_TXMAILBOX_2; + } + + /* Set up the Id */ + hcan->Instance->sTxMailBox[transmitmailbox].TIR &= CAN_TI0R_TXRQ; + if(hcan->pTxMsg->IDE == CAN_ID_STD) + { + assert_param(IS_CAN_STDID(hcan->pTxMsg->StdId)); + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= ((hcan->pTxMsg->StdId << CAN_TI0R_STID_Pos) | \ + hcan->pTxMsg->RTR); + } + else + { + assert_param(IS_CAN_EXTID(hcan->pTxMsg->ExtId)); + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= ((hcan->pTxMsg->ExtId << CAN_TI0R_EXID_Pos) | \ + hcan->pTxMsg->IDE | \ + hcan->pTxMsg->RTR); + } + + /* Set up the DLC */ + hcan->pTxMsg->DLC &= (uint8_t)0x0000000FU; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR &= 0xFFFFFFF0U; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR |= hcan->pTxMsg->DLC; + + /* Set up the data field */ + WRITE_REG(hcan->Instance->sTxMailBox[transmitmailbox].TDLR, ((uint32_t)hcan->pTxMsg->Data[3] << CAN_TDL0R_DATA3_Pos) | + ((uint32_t)hcan->pTxMsg->Data[2] << CAN_TDL0R_DATA2_Pos) | + ((uint32_t)hcan->pTxMsg->Data[1] << CAN_TDL0R_DATA1_Pos) | + ((uint32_t)hcan->pTxMsg->Data[0] << CAN_TDL0R_DATA0_Pos)); + WRITE_REG(hcan->Instance->sTxMailBox[transmitmailbox].TDHR, ((uint32_t)hcan->pTxMsg->Data[7] << CAN_TDL0R_DATA3_Pos) | + ((uint32_t)hcan->pTxMsg->Data[6] << CAN_TDL0R_DATA2_Pos) | + ((uint32_t)hcan->pTxMsg->Data[5] << CAN_TDL0R_DATA1_Pos) | + ((uint32_t)hcan->pTxMsg->Data[4] << CAN_TDL0R_DATA0_Pos)); + + /* Change CAN state */ + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_RX0): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0; + break; + case(HAL_CAN_STATE_BUSY_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX1; + break; + case(HAL_CAN_STATE_BUSY_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0_RX1; + break; + default: /* HAL_CAN_STATE_READY */ + hcan->State = HAL_CAN_STATE_BUSY_TX; + break; + } + + /* Set CAN error code to none */ + hcan->ErrorCode = HAL_CAN_ERROR_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hcan); + + /* Request transmission */ + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= CAN_TI0R_TXRQ; + + /* Enable interrupts: */ + /* - Enable Error warning Interrupt */ + /* - Enable Error passive Interrupt */ + /* - Enable Bus-off Interrupt */ + /* - Enable Last error code Interrupt */ + /* - Enable Error Interrupt */ + /* - Enable Transmit mailbox empty Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_EWG | + CAN_IT_EPV | + CAN_IT_BOF | + CAN_IT_LEC | + CAN_IT_ERR | + CAN_IT_TME ); + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_ERROR; + + /* Return function status */ + return HAL_ERROR; + } + + return HAL_OK; +} + +/** + * @brief Receives a correct CAN frame. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @param FIFONumber FIFO number. + * @param Timeout Timeout duration. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Receive(CAN_HandleTypeDef* hcan, uint8_t FIFONumber, uint32_t Timeout) +{ + uint32_t tickstart = 0U; + CanRxMsgTypeDef* pRxMsg = NULL; + + /* Check the parameters */ + assert_param(IS_CAN_FIFO(FIFONumber)); + + /* Process locked */ + __HAL_LOCK(hcan); + + /* Check if CAN state is not busy for RX FIFO0 */ + if ((FIFONumber == CAN_FIFO0) && ((hcan->State == HAL_CAN_STATE_BUSY_RX0) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX0) || \ + (hcan->State == HAL_CAN_STATE_BUSY_RX0_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX0_RX1))) + { + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + return HAL_BUSY; + } + + /* Check if CAN state is not busy for RX FIFO1 */ + if ((FIFONumber == CAN_FIFO1) && ((hcan->State == HAL_CAN_STATE_BUSY_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_RX0_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX0_RX1))) + { + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + return HAL_BUSY; + } + + /* Change CAN state */ + if (FIFONumber == CAN_FIFO0) + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0; + break; + case(HAL_CAN_STATE_BUSY_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX0_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0_RX1; + break; + default: /* HAL_CAN_STATE_READY */ + hcan->State = HAL_CAN_STATE_BUSY_RX0; + break; + } + } + else /* FIFONumber == CAN_FIFO1 */ + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX1; + break; + case(HAL_CAN_STATE_BUSY_RX0): + hcan->State = HAL_CAN_STATE_BUSY_RX0_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0_RX1; + break; + default: /* HAL_CAN_STATE_READY */ + hcan->State = HAL_CAN_STATE_BUSY_RX1; + break; + } + } + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Check pending message */ + while(__HAL_CAN_MSG_PENDING(hcan, FIFONumber) == 0U) + { + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + hcan->State = HAL_CAN_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + return HAL_TIMEOUT; + } + } + } + + /* Set RxMsg pointer */ + if(FIFONumber == CAN_FIFO0) + { + pRxMsg = hcan->pRxMsg; + } + else /* FIFONumber == CAN_FIFO1 */ + { + pRxMsg = hcan->pRx1Msg; + } + + /* Get the Id */ + pRxMsg->IDE = CAN_RI0R_IDE & hcan->Instance->sFIFOMailBox[FIFONumber].RIR; + if (pRxMsg->IDE == CAN_ID_STD) + { + pRxMsg->StdId = (CAN_RI0R_STID & hcan->Instance->sFIFOMailBox[FIFONumber].RIR) >> CAN_TI0R_STID_Pos; + } + else + { + pRxMsg->ExtId = (0xFFFFFFF8U & hcan->Instance->sFIFOMailBox[FIFONumber].RIR) >> CAN_RI0R_EXID_Pos; + } + pRxMsg->RTR = (CAN_RI0R_RTR & hcan->Instance->sFIFOMailBox[FIFONumber].RIR) >> CAN_RI0R_RTR_Pos; + /* Get the DLC */ + pRxMsg->DLC = (CAN_RDT0R_DLC & hcan->Instance->sFIFOMailBox[FIFONumber].RDTR) >> CAN_RDT0R_DLC_Pos; + /* Get the FMI */ + pRxMsg->FMI = (CAN_RDT0R_FMI & hcan->Instance->sFIFOMailBox[FIFONumber].RDTR) >> CAN_RDT0R_FMI_Pos; + /* Get the FIFONumber */ + pRxMsg->FIFONumber = FIFONumber; + /* Get the data field */ + pRxMsg->Data[0] = (CAN_RDL0R_DATA0 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA0_Pos; + pRxMsg->Data[1] = (CAN_RDL0R_DATA1 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA1_Pos; + pRxMsg->Data[2] = (CAN_RDL0R_DATA2 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA2_Pos; + pRxMsg->Data[3] = (CAN_RDL0R_DATA3 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA3_Pos; + pRxMsg->Data[4] = (CAN_RDH0R_DATA4 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA4_Pos; + pRxMsg->Data[5] = (CAN_RDH0R_DATA5 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA5_Pos; + pRxMsg->Data[6] = (CAN_RDH0R_DATA6 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA6_Pos; + pRxMsg->Data[7] = (CAN_RDH0R_DATA7 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA7_Pos; + + /* Release the FIFO */ + if(FIFONumber == CAN_FIFO0) + { + /* Release FIFO0 */ + __HAL_CAN_FIFO_RELEASE(hcan, CAN_FIFO0); + } + else /* FIFONumber == CAN_FIFO1 */ + { + /* Release FIFO1 */ + __HAL_CAN_FIFO_RELEASE(hcan, CAN_FIFO1); + } + + /* Change CAN state */ + if (FIFONumber == CAN_FIFO0) + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX_RX0): + hcan->State = HAL_CAN_STATE_BUSY_TX; + break; + case(HAL_CAN_STATE_BUSY_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX1; + break; + default: /* HAL_CAN_STATE_BUSY_RX0 */ + hcan->State = HAL_CAN_STATE_READY; + break; + } + } + else /* FIFONumber == CAN_FIFO1 */ + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX; + break; + case(HAL_CAN_STATE_BUSY_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX0; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0; + break; + default: /* HAL_CAN_STATE_BUSY_RX1 */ + hcan->State = HAL_CAN_STATE_READY; + break; + } + } + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Receives a correct CAN frame. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @param FIFONumber FIFO number. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Receive_IT(CAN_HandleTypeDef* hcan, uint8_t FIFONumber) +{ + /* Check the parameters */ + assert_param(IS_CAN_FIFO(FIFONumber)); + + /* Process locked */ + __HAL_LOCK(hcan); + + /* Check if CAN state is not busy for RX FIFO0 */ + if ((FIFONumber == CAN_FIFO0) && ((hcan->State == HAL_CAN_STATE_BUSY_RX0) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX0) || \ + (hcan->State == HAL_CAN_STATE_BUSY_RX0_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX0_RX1))) + { + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + return HAL_BUSY; + } + + /* Check if CAN state is not busy for RX FIFO1 */ + if ((FIFONumber == CAN_FIFO1) && ((hcan->State == HAL_CAN_STATE_BUSY_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_RX0_RX1) || \ + (hcan->State == HAL_CAN_STATE_BUSY_TX_RX0_RX1))) + { + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + return HAL_BUSY; + } + + /* Change CAN state */ + if (FIFONumber == CAN_FIFO0) + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0; + break; + case(HAL_CAN_STATE_BUSY_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX0_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0_RX1; + break; + default: /* HAL_CAN_STATE_READY */ + hcan->State = HAL_CAN_STATE_BUSY_RX0; + break; + } + } + else /* FIFONumber == CAN_FIFO1 */ + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX1; + break; + case(HAL_CAN_STATE_BUSY_RX0): + hcan->State = HAL_CAN_STATE_BUSY_RX0_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0_RX1; + break; + default: /* HAL_CAN_STATE_READY */ + hcan->State = HAL_CAN_STATE_BUSY_RX1; + break; + } + } + + /* Set CAN error code to none */ + hcan->ErrorCode = HAL_CAN_ERROR_NONE; + + /* Enable interrupts: */ + /* - Enable Error warning Interrupt */ + /* - Enable Error passive Interrupt */ + /* - Enable Bus-off Interrupt */ + /* - Enable Last error code Interrupt */ + /* - Enable Error Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_EWG | + CAN_IT_EPV | + CAN_IT_BOF | + CAN_IT_LEC | + CAN_IT_ERR); + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + if(FIFONumber == CAN_FIFO0) + { + /* Enable FIFO 0 overrun and message pending Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_FOV0 | CAN_IT_FMP0); + } + else + { + /* Enable FIFO 1 overrun and message pending Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_FOV1 | CAN_IT_FMP1); + } + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Enters the Sleep (low power) mode. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_CAN_Sleep(CAN_HandleTypeDef* hcan) +{ + uint32_t tickstart = 0U; + + /* Process locked */ + __HAL_LOCK(hcan); + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY; + + /* Request Sleep mode */ + MODIFY_REG(hcan->Instance->MCR, + CAN_MCR_INRQ , + CAN_MCR_SLEEP ); + + /* Sleep mode status */ + if (HAL_IS_BIT_CLR(hcan->Instance->MSR, CAN_MSR_SLAK) || + HAL_IS_BIT_SET(hcan->Instance->MSR, CAN_MSR_INAK) ) + { + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_ERROR; + } + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait the acknowledge */ + while (HAL_IS_BIT_CLR(hcan->Instance->MSR, CAN_MSR_SLAK) || + HAL_IS_BIT_SET(hcan->Instance->MSR, CAN_MSR_INAK) ) + { + if((HAL_GetTick() - tickstart) > CAN_TIMEOUT_VALUE) + { + hcan->State = HAL_CAN_STATE_TIMEOUT; + /* Process unlocked */ + __HAL_UNLOCK(hcan); + return HAL_TIMEOUT; + } + } + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_READY; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Wakes up the CAN peripheral from sleep mode, after that the CAN peripheral + * is in the normal mode. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_CAN_WakeUp(CAN_HandleTypeDef* hcan) +{ + uint32_t tickstart = 0U; + + /* Process locked */ + __HAL_LOCK(hcan); + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY; + + /* Wake up request */ + CLEAR_BIT(hcan->Instance->MCR, CAN_MCR_SLEEP); + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Sleep mode status */ + while(HAL_IS_BIT_SET(hcan->Instance->MSR, CAN_MSR_SLAK)) + { + if((HAL_GetTick() - tickstart) > CAN_TIMEOUT_VALUE) + { + hcan->State= HAL_CAN_STATE_TIMEOUT; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + return HAL_TIMEOUT; + } + } + + if(HAL_IS_BIT_SET(hcan->Instance->MSR, CAN_MSR_SLAK)) + { + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_ERROR; + } + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_READY; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Handles CAN interrupt request + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval None + */ +void HAL_CAN_IRQHandler(CAN_HandleTypeDef* hcan) +{ + uint32_t errorcode = HAL_CAN_ERROR_NONE; + + /* Check Overrun flag for FIFO0 */ + if((__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_FOV0)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_FOV0))) + { + /* Set CAN error code to FOV0 error */ + errorcode |= HAL_CAN_ERROR_FOV0; + + /* Clear FIFO0 Overrun Flag */ + __HAL_CAN_CLEAR_FLAG(hcan, CAN_FLAG_FOV0); + } + + /* Check Overrun flag for FIFO1 */ + if((__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_FOV1)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_FOV1))) + { + /* Set CAN error code to FOV1 error */ + errorcode |= HAL_CAN_ERROR_FOV1; + + /* Clear FIFO1 Overrun Flag */ + __HAL_CAN_CLEAR_FLAG(hcan, CAN_FLAG_FOV1); + } + + /* Check End of transmission flag */ + if(__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_TME)) + { + /* Check Transmit request completion status */ + if((__HAL_CAN_TRANSMIT_STATUS(hcan, CAN_TXMAILBOX_0)) || + (__HAL_CAN_TRANSMIT_STATUS(hcan, CAN_TXMAILBOX_1)) || + (__HAL_CAN_TRANSMIT_STATUS(hcan, CAN_TXMAILBOX_2))) + { + /* Check Transmit success */ + if((__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_TXOK0)) || + (__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_TXOK1)) || + (__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_TXOK2))) + { + /* Call transmit function */ + CAN_Transmit_IT(hcan); + } + else /* Transmit failure */ + { + /* Set CAN error code to TXFAIL error */ + errorcode |= HAL_CAN_ERROR_TXFAIL; + } + + /* Clear transmission status flags (RQCPx and TXOKx) */ + SET_BIT(hcan->Instance->TSR, CAN_TSR_RQCP0 | CAN_TSR_RQCP1 | CAN_TSR_RQCP2 | \ + CAN_FLAG_TXOK0 | CAN_FLAG_TXOK1 | CAN_FLAG_TXOK2); + } + } + + /* Check End of reception flag for FIFO0 */ + if((__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_FMP0)) && + (__HAL_CAN_MSG_PENDING(hcan, CAN_FIFO0) != 0U)) + { + /* Call receive function */ + CAN_Receive_IT(hcan, CAN_FIFO0); + } + + /* Check End of reception flag for FIFO1 */ + if((__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_FMP1)) && + (__HAL_CAN_MSG_PENDING(hcan, CAN_FIFO1) != 0U)) + { + /* Call receive function */ + CAN_Receive_IT(hcan, CAN_FIFO1); + } + + /* Set error code in handle */ + hcan->ErrorCode |= errorcode; + + /* Check Error Warning Flag */ + if((__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_EWG)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_EWG)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR))) + { + /* Set CAN error code to EWG error */ + hcan->ErrorCode |= HAL_CAN_ERROR_EWG; + /* No need for clear of Error Warning Flag as read-only */ + } + + /* Check Error Passive Flag */ + if((__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_EPV)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_EPV)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR))) + { + /* Set CAN error code to EPV error */ + hcan->ErrorCode |= HAL_CAN_ERROR_EPV; + /* No need for clear of Error Passive Flag as read-only */ + } + + /* Check Bus-Off Flag */ + if((__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_BOF)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_BOF)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR))) + { + /* Set CAN error code to BOF error */ + hcan->ErrorCode |= HAL_CAN_ERROR_BOF; + /* No need for clear of Bus-Off Flag as read-only */ + } + + /* Check Last error code Flag */ + if((!HAL_IS_BIT_CLR(hcan->Instance->ESR, CAN_ESR_LEC)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_LEC)) && + (__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR))) + { + switch(hcan->Instance->ESR & CAN_ESR_LEC) + { + case(CAN_ESR_LEC_0): + /* Set CAN error code to STF error */ + hcan->ErrorCode |= HAL_CAN_ERROR_STF; + break; + case(CAN_ESR_LEC_1): + /* Set CAN error code to FOR error */ + hcan->ErrorCode |= HAL_CAN_ERROR_FOR; + break; + case(CAN_ESR_LEC_1 | CAN_ESR_LEC_0): + /* Set CAN error code to ACK error */ + hcan->ErrorCode |= HAL_CAN_ERROR_ACK; + break; + case(CAN_ESR_LEC_2): + /* Set CAN error code to BR error */ + hcan->ErrorCode |= HAL_CAN_ERROR_BR; + break; + case(CAN_ESR_LEC_2 | CAN_ESR_LEC_0): + /* Set CAN error code to BD error */ + hcan->ErrorCode |= HAL_CAN_ERROR_BD; + break; + case(CAN_ESR_LEC_2 | CAN_ESR_LEC_1): + /* Set CAN error code to CRC error */ + hcan->ErrorCode |= HAL_CAN_ERROR_CRC; + break; + default: + break; + } + + /* Clear Last error code Flag */ + CLEAR_BIT(hcan->Instance->ESR, CAN_ESR_LEC); + } + + /* Call the Error call Back in case of Errors */ + if(hcan->ErrorCode != HAL_CAN_ERROR_NONE) + { + /* Clear ERRI Flag */ + SET_BIT(hcan->Instance->MSR, CAN_MSR_ERRI); + + /* Set the CAN state ready to be able to start again the process */ + hcan->State = HAL_CAN_STATE_READY; + + /* Disable interrupts: */ + /* - Disable Error warning Interrupt */ + /* - Disable Error passive Interrupt */ + /* - Disable Bus-off Interrupt */ + /* - Disable Last error code Interrupt */ + /* - Disable Error Interrupt */ + /* - Disable FIFO 0 message pending Interrupt */ + /* - Disable FIFO 0 Overrun Interrupt */ + /* - Disable FIFO 1 message pending Interrupt */ + /* - Disable FIFO 1 Overrun Interrupt */ + /* - Disable Transmit mailbox empty Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_EWG | + CAN_IT_EPV | + CAN_IT_BOF | + CAN_IT_LEC | + CAN_IT_ERR | + CAN_IT_FMP0| + CAN_IT_FOV0| + CAN_IT_FMP1| + CAN_IT_FOV1| + CAN_IT_TME ); + + /* Call Error callback function */ + HAL_CAN_ErrorCallback(hcan); + } +} + +/** + * @brief Transmission complete callback in non blocking mode + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval None + */ +__weak void HAL_CAN_TxCpltCallback(CAN_HandleTypeDef* hcan) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcan); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_CAN_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Transmission complete callback in non blocking mode + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval None + */ +__weak void HAL_CAN_RxCpltCallback(CAN_HandleTypeDef* hcan) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcan); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_CAN_RxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Error CAN callback. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval None + */ +__weak void HAL_CAN_ErrorCallback(CAN_HandleTypeDef *hcan) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcan); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_CAN_ErrorCallback could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup CAN_Exported_Functions_Group3 Peripheral State and Error functions + * @brief CAN Peripheral State functions + * +@verbatim + ============================================================================== + ##### Peripheral State and Error functions ##### + ============================================================================== + [..] + This subsection provides functions allowing to : + (+) Check the CAN state. + (+) Check CAN Errors detected during interrupt process + +@endverbatim + * @{ + */ + +/** + * @brief return the CAN state + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval HAL state + */ +HAL_CAN_StateTypeDef HAL_CAN_GetState(CAN_HandleTypeDef* hcan) +{ + /* Return CAN state */ + return hcan->State; +} + +/** + * @brief Return the CAN error code + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval CAN Error Code + */ +uint32_t HAL_CAN_GetError(CAN_HandleTypeDef *hcan) +{ + return hcan->ErrorCode; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup CAN_Private_Functions CAN Private Functions + * @brief CAN Frame message Rx/Tx functions + * + * @{ + */ + +/** + * @brief Initiates and transmits a CAN frame message. + * @param hcan pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @retval HAL status + */ +static HAL_StatusTypeDef CAN_Transmit_IT(CAN_HandleTypeDef* hcan) +{ + /* Disable Transmit mailbox empty Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_TME); + + if(hcan->State == HAL_CAN_STATE_BUSY_TX) + { + /* Disable interrupts: */ + /* - Disable Error warning Interrupt */ + /* - Disable Error passive Interrupt */ + /* - Disable Bus-off Interrupt */ + /* - Disable Last error code Interrupt */ + /* - Disable Error Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_EWG | + CAN_IT_EPV | + CAN_IT_BOF | + CAN_IT_LEC | + CAN_IT_ERR ); + } + + /* Change CAN state */ + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX_RX0): + hcan->State = HAL_CAN_STATE_BUSY_RX0; + break; + case(HAL_CAN_STATE_BUSY_TX_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX0_RX1; + break; + default: /* HAL_CAN_STATE_BUSY_TX */ + hcan->State = HAL_CAN_STATE_READY; + break; + } + + /* Transmission complete callback */ + HAL_CAN_TxCpltCallback(hcan); + + return HAL_OK; +} + +/** + * @brief Receives a correct CAN frame. + * @param hcan Pointer to a CAN_HandleTypeDef structure that contains + * the configuration information for the specified CAN. + * @param FIFONumber Specify the FIFO number + * @retval HAL status + * @retval None + */ +static HAL_StatusTypeDef CAN_Receive_IT(CAN_HandleTypeDef* hcan, uint8_t FIFONumber) +{ + CanRxMsgTypeDef* pRxMsg = NULL; + + /* Set RxMsg pointer */ + if(FIFONumber == CAN_FIFO0) + { + pRxMsg = hcan->pRxMsg; + } + else /* FIFONumber == CAN_FIFO1 */ + { + pRxMsg = hcan->pRx1Msg; + } + + /* Get the Id */ + pRxMsg->IDE = CAN_RI0R_IDE & hcan->Instance->sFIFOMailBox[FIFONumber].RIR; + if (pRxMsg->IDE == CAN_ID_STD) + { + pRxMsg->StdId = (CAN_RI0R_STID & hcan->Instance->sFIFOMailBox[FIFONumber].RIR) >> CAN_TI0R_STID_Pos; + } + else + { + pRxMsg->ExtId = (0xFFFFFFF8U & hcan->Instance->sFIFOMailBox[FIFONumber].RIR) >> CAN_RI0R_EXID_Pos; + } + pRxMsg->RTR = (CAN_RI0R_RTR & hcan->Instance->sFIFOMailBox[FIFONumber].RIR) >> CAN_RI0R_RTR_Pos; + /* Get the DLC */ + pRxMsg->DLC = (CAN_RDT0R_DLC & hcan->Instance->sFIFOMailBox[FIFONumber].RDTR) >> CAN_RDT0R_DLC_Pos; + /* Get the FMI */ + pRxMsg->FMI = (CAN_RDT0R_FMI & hcan->Instance->sFIFOMailBox[FIFONumber].RDTR) >> CAN_RDT0R_FMI_Pos; + /* Get the FIFONumber */ + pRxMsg->FIFONumber = FIFONumber; + /* Get the data field */ + pRxMsg->Data[0] = (CAN_RDL0R_DATA0 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA0_Pos; + pRxMsg->Data[1] = (CAN_RDL0R_DATA1 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA1_Pos; + pRxMsg->Data[2] = (CAN_RDL0R_DATA2 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA2_Pos; + pRxMsg->Data[3] = (CAN_RDL0R_DATA3 & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR) >> CAN_RDL0R_DATA3_Pos; + pRxMsg->Data[4] = (CAN_RDH0R_DATA4 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA4_Pos; + pRxMsg->Data[5] = (CAN_RDH0R_DATA5 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA5_Pos; + pRxMsg->Data[6] = (CAN_RDH0R_DATA6 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA6_Pos; + pRxMsg->Data[7] = (CAN_RDH0R_DATA7 & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR) >> CAN_RDH0R_DATA7_Pos; + + /* Release the FIFO */ + /* Release FIFO0 */ + if (FIFONumber == CAN_FIFO0) + { + __HAL_CAN_FIFO_RELEASE(hcan, CAN_FIFO0); + + /* Disable FIFO 0 overrun and message pending Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_FOV0 | CAN_IT_FMP0); + } + /* Release FIFO1 */ + else /* FIFONumber == CAN_FIFO1 */ + { + __HAL_CAN_FIFO_RELEASE(hcan, CAN_FIFO1); + + /* Disable FIFO 1 overrun and message pending Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_FOV1 | CAN_IT_FMP1); + } + + if((hcan->State == HAL_CAN_STATE_BUSY_RX0) || (hcan->State == HAL_CAN_STATE_BUSY_RX1)) + { + /* Disable interrupts: */ + /* - Disable Error warning Interrupt */ + /* - Disable Error passive Interrupt */ + /* - Disable Bus-off Interrupt */ + /* - Disable Last error code Interrupt */ + /* - Disable Error Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_EWG | + CAN_IT_EPV | + CAN_IT_BOF | + CAN_IT_LEC | + CAN_IT_ERR ); + } + + /* Change CAN state */ + if (FIFONumber == CAN_FIFO0) + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX_RX0): + hcan->State = HAL_CAN_STATE_BUSY_TX; + break; + case(HAL_CAN_STATE_BUSY_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX1; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX1; + break; + default: /* HAL_CAN_STATE_BUSY_RX0 */ + hcan->State = HAL_CAN_STATE_READY; + break; + } + } + else /* FIFONumber == CAN_FIFO1 */ + { + switch(hcan->State) + { + case(HAL_CAN_STATE_BUSY_TX_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX; + break; + case(HAL_CAN_STATE_BUSY_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_RX0; + break; + case(HAL_CAN_STATE_BUSY_TX_RX0_RX1): + hcan->State = HAL_CAN_STATE_BUSY_TX_RX0; + break; + default: /* HAL_CAN_STATE_BUSY_RX1 */ + hcan->State = HAL_CAN_STATE_READY; + break; + } + } + + /* Receive complete callback */ + HAL_CAN_RxCpltCallback(hcan); + + /* Return function status */ + return HAL_OK; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* defined(STM32F072xB) || defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F091xC) || defined(STM32F098xx) */ + +#endif /* HAL_CAN_MODULE_ENABLED */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |