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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_can.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_can.c | 1439 |
1 files changed, 1439 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_can.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_can.c new file mode 100644 index 0000000000..c227e28039 --- /dev/null +++ b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_can.c @@ -0,0 +1,1439 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_can.c + * @author MCD Application Team + * @version V1.4.0 + * @date 14-August-2015 + * @brief 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() for CAN1 and __HAL_RCC_CAN2_CLK_ENABLE() for CAN2 + -@- In case you are using CAN2 only, you have to enable the CAN1 clock. + + (#) CAN pins configuration + (++) Enable the clock for the CAN GPIOs using the following function: + __GPIOx_CLK_ENABLE() + (++) Connect and configure the involved CAN pins to AF9 using the + following function HAL_GPIO_Init() + + (#) Initialize and configure the CAN using CAN_Init() function. + + (#) Transmit the desired CAN frame using HAL_CAN_Transmit() function. + + (#) Receive a CAN frame using HAL_CAN_Receive() 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) 2015 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 "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup CAN CAN + * @brief CAN driver modules + * @{ + */ + +#ifdef HAL_CAN_MODULE_ENABLED + +#if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) ||\ + defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\ + defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @addtogroup CAN_Private_Constants + * @{ + */ +#define CAN_TIMEOUT_VALUE 10 +/** + * @} + */ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @addtogroup 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 InitStatus = 3; + uint32_t tickstart = 0; + + /* 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 */ + hcan->Instance->MCR &= (~(uint32_t)CAN_MCR_SLEEP); + + /* Request initialisation */ + hcan->Instance->MCR |= CAN_MCR_INRQ ; + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait the acknowledge */ + while((hcan->Instance->MSR & CAN_MSR_INAK) != 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 ((hcan->Instance->MSR & CAN_MSR_INAK) != CAN_MSR_INAK) + { + InitStatus = CAN_INITSTATUS_FAILED; + } + else + { + /* Set the time triggered communication mode */ + if (hcan->Init.TTCM == ENABLE) + { + hcan->Instance->MCR |= CAN_MCR_TTCM; + } + else + { + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_TTCM; + } + + /* Set the automatic bus-off management */ + if (hcan->Init.ABOM == ENABLE) + { + hcan->Instance->MCR |= CAN_MCR_ABOM; + } + else + { + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_ABOM; + } + + /* Set the automatic wake-up mode */ + if (hcan->Init.AWUM == ENABLE) + { + hcan->Instance->MCR |= CAN_MCR_AWUM; + } + else + { + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_AWUM; + } + + /* Set the no automatic retransmission */ + if (hcan->Init.NART == ENABLE) + { + hcan->Instance->MCR |= CAN_MCR_NART; + } + else + { + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_NART; + } + + /* Set the receive FIFO locked mode */ + if (hcan->Init.RFLM == ENABLE) + { + hcan->Instance->MCR |= CAN_MCR_RFLM; + } + else + { + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_RFLM; + } + + /* Set the transmit FIFO priority */ + if (hcan->Init.TXFP == ENABLE) + { + hcan->Instance->MCR |= CAN_MCR_TXFP; + } + else + { + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_TXFP; + } + + /* Set the bit timing register */ + hcan->Instance->BTR = (uint32_t)((uint32_t)hcan->Init.Mode) | \ + ((uint32_t)hcan->Init.SJW) | \ + ((uint32_t)hcan->Init.BS1) | \ + ((uint32_t)hcan->Init.BS2) | \ + ((uint32_t)hcan->Init.Prescaler - 1); + + /* Request leave initialisation */ + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_INRQ; + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait the acknowledge */ + while((hcan->Instance->MSR & CAN_MSR_INAK) == 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 ((hcan->Instance->MSR & CAN_MSR_INAK) == CAN_MSR_INAK) + { + InitStatus = CAN_INITSTATUS_FAILED; + } + else + { + InitStatus = CAN_INITSTATUS_SUCCESS; + } + } + + if(InitStatus == 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 = 0; + + /* 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 = ((uint32_t)1) << sFilterConfig->FilterNumber; + + /* Initialisation mode for the filter */ + CAN1->FMR |= (uint32_t)CAN_FMR_FINIT; + + /* Select the start slave bank */ + CAN1->FMR &= ~((uint32_t)CAN_FMR_CAN2SB); + CAN1->FMR |= (uint32_t)(sFilterConfig->BankNumber << 8); + + /* Filter Deactivation */ + CAN1->FA1R &= ~(uint32_t)filternbrbitpos; + + /* Filter Scale */ + if (sFilterConfig->FilterScale == CAN_FILTERSCALE_16BIT) + { + /* 16-bit scale for the filter */ + CAN1->FS1R &= ~(uint32_t)filternbrbitpos; + + /* First 16-bit identifier and First 16-bit mask */ + /* Or First 16-bit identifier and Second 16-bit identifier */ + CAN1->sFilterRegister[sFilterConfig->FilterNumber].FR1 = + ((0x0000FFFF & (uint32_t)sFilterConfig->FilterMaskIdLow) << 16) | + (0x0000FFFF & (uint32_t)sFilterConfig->FilterIdLow); + + /* Second 16-bit identifier and Second 16-bit mask */ + /* Or Third 16-bit identifier and Fourth 16-bit identifier */ + CAN1->sFilterRegister[sFilterConfig->FilterNumber].FR2 = + ((0x0000FFFF & (uint32_t)sFilterConfig->FilterMaskIdHigh) << 16) | + (0x0000FFFF & (uint32_t)sFilterConfig->FilterIdHigh); + } + + if (sFilterConfig->FilterScale == CAN_FILTERSCALE_32BIT) + { + /* 32-bit scale for the filter */ + CAN1->FS1R |= filternbrbitpos; + /* 32-bit identifier or First 32-bit identifier */ + CAN1->sFilterRegister[sFilterConfig->FilterNumber].FR1 = + ((0x0000FFFF & (uint32_t)sFilterConfig->FilterIdHigh) << 16) | + (0x0000FFFF & (uint32_t)sFilterConfig->FilterIdLow); + /* 32-bit mask or Second 32-bit identifier */ + CAN1->sFilterRegister[sFilterConfig->FilterNumber].FR2 = + ((0x0000FFFF & (uint32_t)sFilterConfig->FilterMaskIdHigh) << 16) | + (0x0000FFFF & (uint32_t)sFilterConfig->FilterMaskIdLow); + } + + /* Filter Mode */ + if (sFilterConfig->FilterMode == CAN_FILTERMODE_IDMASK) + { + /*Id/Mask mode for the filter*/ + CAN1->FM1R &= ~(uint32_t)filternbrbitpos; + } + else /* CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdList */ + { + /*Identifier list mode for the filter*/ + CAN1->FM1R |= (uint32_t)filternbrbitpos; + } + + /* Filter FIFO assignment */ + if (sFilterConfig->FilterFIFOAssignment == CAN_FILTER_FIFO0) + { + /* FIFO 0 assignation for the filter */ + CAN1->FFA1R &= ~(uint32_t)filternbrbitpos; + } + + if (sFilterConfig->FilterFIFOAssignment == CAN_FILTER_FIFO1) + { + /* FIFO 1 assignation for the filter */ + CAN1->FFA1R |= (uint32_t)filternbrbitpos; + } + + /* Filter activation */ + if (sFilterConfig->FilterActivation == ENABLE) + { + CAN1->FA1R |= filternbrbitpos; + } + + /* Leave the initialisation mode for the filter */ + CAN1->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) +{ + /* 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) +{ + /* 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 IO 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: Specify Timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Transmit(CAN_HandleTypeDef* hcan, uint32_t Timeout) +{ + uint32_t transmitmailbox = 5; + uint32_t tickstart = 0; + + /* 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)); + + /* Process locked */ + __HAL_LOCK(hcan); + + if(hcan->State == HAL_CAN_STATE_BUSY_RX) + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX_RX; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX; + } + + /* Select one empty transmit mailbox */ + if ((hcan->Instance->TSR&CAN_TSR_TME0) == CAN_TSR_TME0) + { + transmitmailbox = 0; + } + else if ((hcan->Instance->TSR&CAN_TSR_TME1) == CAN_TSR_TME1) + { + transmitmailbox = 1; + } + else if ((hcan->Instance->TSR&CAN_TSR_TME2) == CAN_TSR_TME2) + { + transmitmailbox = 2; + } + else + { + transmitmailbox = CAN_TXSTATUS_NOMAILBOX; + } + + if (transmitmailbox != CAN_TXSTATUS_NOMAILBOX) + { + /* 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 << 21) | \ + hcan->pTxMsg->RTR); + } + else + { + assert_param(IS_CAN_EXTID(hcan->pTxMsg->ExtId)); + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= ((hcan->pTxMsg->ExtId << 3) | \ + hcan->pTxMsg->IDE | \ + hcan->pTxMsg->RTR); + } + + /* Set up the DLC */ + hcan->pTxMsg->DLC &= (uint8_t)0x0000000F; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR &= (uint32_t)0xFFFFFFF0; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR |= hcan->pTxMsg->DLC; + + /* Set up the data field */ + hcan->Instance->sTxMailBox[transmitmailbox].TDLR = (((uint32_t)hcan->pTxMsg->Data[3] << 24) | + ((uint32_t)hcan->pTxMsg->Data[2] << 16) | + ((uint32_t)hcan->pTxMsg->Data[1] << 8) | + ((uint32_t)hcan->pTxMsg->Data[0])); + hcan->Instance->sTxMailBox[transmitmailbox].TDHR = (((uint32_t)hcan->pTxMsg->Data[7] << 24) | + ((uint32_t)hcan->pTxMsg->Data[6] << 16) | + ((uint32_t)hcan->pTxMsg->Data[5] << 8) | + ((uint32_t)hcan->pTxMsg->Data[4])); + /* Request transmission */ + 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 == 0)||((HAL_GetTick() - tickstart ) > Timeout)) + { + hcan->State = HAL_CAN_STATE_TIMEOUT; + /* Process unlocked */ + __HAL_UNLOCK(hcan); + return HAL_TIMEOUT; + } + } + } + if(hcan->State == HAL_CAN_STATE_BUSY_TX_RX) + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_RX; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_READY; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + } + + /* Return function status */ + return HAL_OK; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_ERROR; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* 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 = 5; + uint32_t tmp = 0; + + /* 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)); + + tmp = hcan->State; + if((tmp == HAL_CAN_STATE_READY) || (tmp == HAL_CAN_STATE_BUSY_RX)) + { + /* Process Locked */ + __HAL_LOCK(hcan); + + /* Select one empty transmit mailbox */ + if((hcan->Instance->TSR&CAN_TSR_TME0) == CAN_TSR_TME0) + { + transmitmailbox = 0; + } + else if((hcan->Instance->TSR&CAN_TSR_TME1) == CAN_TSR_TME1) + { + transmitmailbox = 1; + } + else if((hcan->Instance->TSR&CAN_TSR_TME2) == CAN_TSR_TME2) + { + transmitmailbox = 2; + } + else + { + transmitmailbox = CAN_TXSTATUS_NOMAILBOX; + } + + if(transmitmailbox != CAN_TXSTATUS_NOMAILBOX) + { + /* 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 << 21) | \ + hcan->pTxMsg->RTR); + } + else + { + assert_param(IS_CAN_EXTID(hcan->pTxMsg->ExtId)); + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= ((hcan->pTxMsg->ExtId << 3) | \ + hcan->pTxMsg->IDE | \ + hcan->pTxMsg->RTR); + } + + /* Set up the DLC */ + hcan->pTxMsg->DLC &= (uint8_t)0x0000000F; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR &= (uint32_t)0xFFFFFFF0; + hcan->Instance->sTxMailBox[transmitmailbox].TDTR |= hcan->pTxMsg->DLC; + + /* Set up the data field */ + hcan->Instance->sTxMailBox[transmitmailbox].TDLR = (((uint32_t)hcan->pTxMsg->Data[3] << 24) | + ((uint32_t)hcan->pTxMsg->Data[2] << 16) | + ((uint32_t)hcan->pTxMsg->Data[1] << 8) | + ((uint32_t)hcan->pTxMsg->Data[0])); + hcan->Instance->sTxMailBox[transmitmailbox].TDHR = (((uint32_t)hcan->pTxMsg->Data[7] << 24) | + ((uint32_t)hcan->pTxMsg->Data[6] << 16) | + ((uint32_t)hcan->pTxMsg->Data[5] << 8) | + ((uint32_t)hcan->pTxMsg->Data[4])); + + if(hcan->State == HAL_CAN_STATE_BUSY_RX) + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX_RX; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX; + } + + /* Set CAN error code to none */ + hcan->ErrorCode = HAL_CAN_ERROR_NONE; + + /* Process Unlocked */ + __HAL_UNLOCK(hcan); + + /* Enable Error warning Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_EWG); + + /* Enable Error passive Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_EPV); + + /* Enable Bus-off Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_BOF); + + /* Enable Last error code Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_LEC); + + /* Enable Error Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_ERR); + + /* Enable Transmit mailbox empty Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_TME); + + /* Request transmission */ + hcan->Instance->sTxMailBox[transmitmailbox].TIR |= CAN_TI0R_TXRQ; + } + } + else + { + return HAL_BUSY; + } + + 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 value + * @param Timeout: Specify Timeout value + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Receive(CAN_HandleTypeDef* hcan, uint8_t FIFONumber, uint32_t Timeout) +{ + uint32_t tickstart = 0; + + /* Check the parameters */ + assert_param(IS_CAN_FIFO(FIFONumber)); + + /* Process locked */ + __HAL_LOCK(hcan); + + if(hcan->State == HAL_CAN_STATE_BUSY_TX) + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX_RX; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_RX; + } + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Check pending message */ + while(__HAL_CAN_MSG_PENDING(hcan, FIFONumber) == 0) + { + /* Check for the Timeout */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) + { + hcan->State = HAL_CAN_STATE_TIMEOUT; + /* Process unlocked */ + __HAL_UNLOCK(hcan); + return HAL_TIMEOUT; + } + } + } + + /* Get the Id */ + hcan->pRxMsg->IDE = (uint8_t)0x04 & hcan->Instance->sFIFOMailBox[FIFONumber].RIR; + if (hcan->pRxMsg->IDE == CAN_ID_STD) + { + hcan->pRxMsg->StdId = (uint32_t)0x000007FF & (hcan->Instance->sFIFOMailBox[FIFONumber].RIR >> 21); + } + else + { + hcan->pRxMsg->ExtId = (uint32_t)0x1FFFFFFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RIR >> 3); + } + + hcan->pRxMsg->RTR = (uint8_t)0x02 & hcan->Instance->sFIFOMailBox[FIFONumber].RIR; + /* Get the DLC */ + hcan->pRxMsg->DLC = (uint8_t)0x0F & hcan->Instance->sFIFOMailBox[FIFONumber].RDTR; + /* Get the FMI */ + hcan->pRxMsg->FMI = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDTR >> 8); + /* Get the data field */ + hcan->pRxMsg->Data[0] = (uint8_t)0xFF & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR; + hcan->pRxMsg->Data[1] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDLR >> 8); + hcan->pRxMsg->Data[2] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDLR >> 16); + hcan->pRxMsg->Data[3] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDLR >> 24); + hcan->pRxMsg->Data[4] = (uint8_t)0xFF & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR; + hcan->pRxMsg->Data[5] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDHR >> 8); + hcan->pRxMsg->Data[6] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDHR >> 16); + hcan->pRxMsg->Data[7] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDHR >> 24); + + /* 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); + } + + if(hcan->State == HAL_CAN_STATE_BUSY_TX_RX) + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX; + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_READY; + + /* 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: Specify the FIFO number + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CAN_Receive_IT(CAN_HandleTypeDef* hcan, uint8_t FIFONumber) +{ + uint32_t tmp = 0; + + /* Check the parameters */ + assert_param(IS_CAN_FIFO(FIFONumber)); + + tmp = hcan->State; + if((tmp == HAL_CAN_STATE_READY) || (tmp == HAL_CAN_STATE_BUSY_TX)) + { + /* Process locked */ + __HAL_LOCK(hcan); + + if(hcan->State == HAL_CAN_STATE_BUSY_TX) + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX_RX; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_RX; + } + + /* Set CAN error code to none */ + hcan->ErrorCode = HAL_CAN_ERROR_NONE; + + /* Enable Error warning Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_EWG); + + /* Enable Error passive Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_EPV); + + /* Enable Bus-off Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_BOF); + + /* Enable Last error code Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_LEC); + + /* Enable Error Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_ERR); + + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + if(FIFONumber == CAN_FIFO0) + { + /* Enable FIFO 0 message pending Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_FMP0); + } + else + { + /* Enable FIFO 1 message pending Interrupt */ + __HAL_CAN_ENABLE_IT(hcan, CAN_IT_FMP1); + } + + } + else + { + return HAL_BUSY; + } + + /* 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 = 0; + + /* Process locked */ + __HAL_LOCK(hcan); + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY; + + /* Request Sleep mode */ + hcan->Instance->MCR = (((hcan->Instance->MCR) & (uint32_t)(~(uint32_t)CAN_MCR_INRQ)) | CAN_MCR_SLEEP); + + /* Sleep mode status */ + if ((hcan->Instance->MSR & (CAN_MSR_SLAK|CAN_MSR_INAK)) != CAN_MSR_SLAK) + { + /* Process unlocked */ + __HAL_UNLOCK(hcan); + + /* Return function status */ + return HAL_ERROR; + } + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait the acknowledge */ + while((hcan->Instance->MSR & (CAN_MSR_SLAK|CAN_MSR_INAK)) != CAN_MSR_SLAK) + { + 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 = 0; + + /* Process locked */ + __HAL_LOCK(hcan); + + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY; + + /* Wake up request */ + hcan->Instance->MCR &= ~(uint32_t)CAN_MCR_SLEEP; + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Sleep mode status */ + while((hcan->Instance->MSR & CAN_MSR_SLAK) == 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((hcan->Instance->MSR & CAN_MSR_SLAK) == 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 tmp1 = 0, tmp2 = 0, tmp3 = 0; + + /* Check End of transmission flag */ + if(__HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_TME)) + { + tmp1 = __HAL_CAN_TRANSMIT_STATUS(hcan, CAN_TXMAILBOX_0); + tmp2 = __HAL_CAN_TRANSMIT_STATUS(hcan, CAN_TXMAILBOX_1); + tmp3 = __HAL_CAN_TRANSMIT_STATUS(hcan, CAN_TXMAILBOX_2); + if(tmp1 || tmp2 || tmp3) + { + /* Call transmit function */ + CAN_Transmit_IT(hcan); + } + } + + tmp1 = __HAL_CAN_MSG_PENDING(hcan, CAN_FIFO0); + tmp2 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_FMP0); + /* Check End of reception flag for FIFO0 */ + if((tmp1 != 0) && tmp2) + { + /* Call receive function */ + CAN_Receive_IT(hcan, CAN_FIFO0); + } + + tmp1 = __HAL_CAN_MSG_PENDING(hcan, CAN_FIFO1); + tmp2 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_FMP1); + /* Check End of reception flag for FIFO1 */ + if((tmp1 != 0) && tmp2) + { + /* Call receive function */ + CAN_Receive_IT(hcan, CAN_FIFO1); + } + + tmp1 = __HAL_CAN_GET_FLAG(hcan, CAN_FLAG_EWG); + tmp2 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_EWG); + tmp3 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR); + /* Check Error Warning Flag */ + if(tmp1 && tmp2 && tmp3) + { + /* Set CAN error code to EWG error */ + hcan->ErrorCode |= HAL_CAN_ERROR_EWG; + /* Clear Error Warning Flag */ + __HAL_CAN_CLEAR_FLAG(hcan, CAN_FLAG_EWG); + } + + tmp1 = __HAL_CAN_GET_FLAG(hcan, CAN_FLAG_EPV); + tmp2 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_EPV); + tmp3 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR); + /* Check Error Passive Flag */ + if(tmp1 && tmp2 && tmp3) + { + /* Set CAN error code to EPV error */ + hcan->ErrorCode |= HAL_CAN_ERROR_EPV; + /* Clear Error Passive Flag */ + __HAL_CAN_CLEAR_FLAG(hcan, CAN_FLAG_EPV); + } + + tmp1 = __HAL_CAN_GET_FLAG(hcan, CAN_FLAG_BOF); + tmp2 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_BOF); + tmp3 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR); + /* Check Bus-Off Flag */ + if(tmp1 && tmp2 && tmp3) + { + /* Set CAN error code to BOF error */ + hcan->ErrorCode |= HAL_CAN_ERROR_BOF; + /* Clear Bus-Off Flag */ + __HAL_CAN_CLEAR_FLAG(hcan, CAN_FLAG_BOF); + } + + tmp1 = HAL_IS_BIT_CLR(hcan->Instance->ESR, CAN_ESR_LEC); + tmp2 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_LEC); + tmp3 = __HAL_CAN_GET_IT_SOURCE(hcan, CAN_IT_ERR); + /* Check Last error code Flag */ + if((!tmp1) && tmp2 && tmp3) + { + tmp1 = (hcan->Instance->ESR) & CAN_ESR_LEC; + switch(tmp1) + { + 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 */ + hcan->Instance->ESR &= ~(CAN_ESR_LEC); + } + + /* Call the Error call Back in case of Errors */ + if(hcan->ErrorCode != HAL_CAN_ERROR_NONE) + { + /* Set the CAN state ready to be able to start again the process */ + hcan->State = HAL_CAN_STATE_READY; + /* 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) +{ + /* 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) +{ + /* 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) +{ + /* 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; +} + +/** + * @} + */ +/** + * @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 Error warning Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_EWG); + + /* Disable Error passive Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_EPV); + + /* Disable Bus-off Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_BOF); + + /* Disable Last error code Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_LEC); + + /* Disable Error Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_ERR); + } + + if(hcan->State == HAL_CAN_STATE_BUSY_TX_RX) + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_RX; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_READY; + } + + /* 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) +{ + /* Get the Id */ + hcan->pRxMsg->IDE = (uint8_t)0x04 & hcan->Instance->sFIFOMailBox[FIFONumber].RIR; + if (hcan->pRxMsg->IDE == CAN_ID_STD) + { + hcan->pRxMsg->StdId = (uint32_t)0x000007FF & (hcan->Instance->sFIFOMailBox[FIFONumber].RIR >> 21); + } + else + { + hcan->pRxMsg->ExtId = (uint32_t)0x1FFFFFFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RIR >> 3); + } + + hcan->pRxMsg->RTR = (uint8_t)0x02 & hcan->Instance->sFIFOMailBox[FIFONumber].RIR; + /* Get the DLC */ + hcan->pRxMsg->DLC = (uint8_t)0x0F & hcan->Instance->sFIFOMailBox[FIFONumber].RDTR; + /* Get the FMI */ + hcan->pRxMsg->FMI = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDTR >> 8); + /* Get the data field */ + hcan->pRxMsg->Data[0] = (uint8_t)0xFF & hcan->Instance->sFIFOMailBox[FIFONumber].RDLR; + hcan->pRxMsg->Data[1] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDLR >> 8); + hcan->pRxMsg->Data[2] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDLR >> 16); + hcan->pRxMsg->Data[3] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDLR >> 24); + hcan->pRxMsg->Data[4] = (uint8_t)0xFF & hcan->Instance->sFIFOMailBox[FIFONumber].RDHR; + hcan->pRxMsg->Data[5] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDHR >> 8); + hcan->pRxMsg->Data[6] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDHR >> 16); + hcan->pRxMsg->Data[7] = (uint8_t)0xFF & (hcan->Instance->sFIFOMailBox[FIFONumber].RDHR >> 24); + /* Release the FIFO */ + /* Release FIFO0 */ + if (FIFONumber == CAN_FIFO0) + { + __HAL_CAN_FIFO_RELEASE(hcan, CAN_FIFO0); + + /* Disable FIFO 0 message pending Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_FMP0); + } + /* Release FIFO1 */ + else /* FIFONumber == CAN_FIFO1 */ + { + __HAL_CAN_FIFO_RELEASE(hcan, CAN_FIFO1); + + /* Disable FIFO 1 message pending Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_FMP1); + } + + if(hcan->State == HAL_CAN_STATE_BUSY_RX) + { + /* Disable Error warning Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_EWG); + + /* Disable Error passive Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_EPV); + + /* Disable Bus-off Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_BOF); + + /* Disable Last error code Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_LEC); + + /* Disable Error Interrupt */ + __HAL_CAN_DISABLE_IT(hcan, CAN_IT_ERR); + } + + if(hcan->State == HAL_CAN_STATE_BUSY_TX_RX) + { + /* Disable CAN state */ + hcan->State = HAL_CAN_STATE_BUSY_TX; + } + else + { + /* Change CAN state */ + hcan->State = HAL_CAN_STATE_READY; + } + + /* Receive complete callback */ + HAL_CAN_RxCpltCallback(hcan); + + /* Return function status */ + return HAL_OK; +} + +/** + * @} + */ +#endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx ||\ + STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx || STM32F479xx || STM3F412xE */ + +#endif /* HAL_CAN_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |