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author | Trygve Laugstøl <trygvis@inamo.no> | 2017-01-25 22:24:18 +0100 |
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committer | Trygve Laugstøl <trygvis@inamo.no> | 2017-01-25 22:29:25 +0100 |
commit | 40e04e3772726829d66c12e69f24b03920d79c67 (patch) | |
tree | 636811bad956798c9d5d22de9e7ba8c799b8d791 /tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_can.c | |
parent | 2fff65aed2477a503c72629d27e2a330d30c02d1 (diff) | |
download | stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.tar.gz stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.tar.bz2 stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.tar.xz stm32f103-playground-40e04e3772726829d66c12e69f24b03920d79c67.zip |
o Moving tinyprintf and stm libraries under thirdparty.
Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_can.c')
-rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_can.c | 1415 |
1 files changed, 0 insertions, 1415 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_can.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_can.c deleted file mode 100644 index ec8e049..0000000 --- a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_can.c +++ /dev/null @@ -1,1415 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f10x_can.c - * @author MCD Application Team - * @version V3.5.0 - * @date 11-March-2011 - * @brief This file provides all the CAN firmware functions. - ****************************************************************************** - * @attention - * - * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS - * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE - * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY - * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING - * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE - * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. - * - * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "stm32f10x_can.h" -#include "stm32f10x_rcc.h" - -/** @addtogroup STM32F10x_StdPeriph_Driver - * @{ - */ - -/** @defgroup CAN - * @brief CAN driver modules - * @{ - */ - -/** @defgroup CAN_Private_TypesDefinitions - * @{ - */ - -/** - * @} - */ - -/** @defgroup CAN_Private_Defines - * @{ - */ - -/* CAN Master Control Register bits */ - -#define MCR_DBF ((uint32_t)0x00010000) /* software master reset */ - -/* CAN Mailbox Transmit Request */ -#define TMIDxR_TXRQ ((uint32_t)0x00000001) /* Transmit mailbox request */ - -/* CAN Filter Master Register bits */ -#define FMR_FINIT ((uint32_t)0x00000001) /* Filter init mode */ - -/* Time out for INAK bit */ -#define INAK_TIMEOUT ((uint32_t)0x0000FFFF) -/* Time out for SLAK bit */ -#define SLAK_TIMEOUT ((uint32_t)0x0000FFFF) - - - -/* Flags in TSR register */ -#define CAN_FLAGS_TSR ((uint32_t)0x08000000) -/* Flags in RF1R register */ -#define CAN_FLAGS_RF1R ((uint32_t)0x04000000) -/* Flags in RF0R register */ -#define CAN_FLAGS_RF0R ((uint32_t)0x02000000) -/* Flags in MSR register */ -#define CAN_FLAGS_MSR ((uint32_t)0x01000000) -/* Flags in ESR register */ -#define CAN_FLAGS_ESR ((uint32_t)0x00F00000) - -/* Mailboxes definition */ -#define CAN_TXMAILBOX_0 ((uint8_t)0x00) -#define CAN_TXMAILBOX_1 ((uint8_t)0x01) -#define CAN_TXMAILBOX_2 ((uint8_t)0x02) - - - -#define CAN_MODE_MASK ((uint32_t) 0x00000003) -/** - * @} - */ - -/** @defgroup CAN_Private_Macros - * @{ - */ - -/** - * @} - */ - -/** @defgroup CAN_Private_Variables - * @{ - */ - -/** - * @} - */ - -/** @defgroup CAN_Private_FunctionPrototypes - * @{ - */ - -static ITStatus CheckITStatus(uint32_t CAN_Reg, uint32_t It_Bit); - -/** - * @} - */ - -/** @defgroup CAN_Private_Functions - * @{ - */ - -/** - * @brief Deinitializes the CAN peripheral registers to their default reset values. - * @param CANx: where x can be 1 or 2 to select the CAN peripheral. - * @retval None. - */ -void CAN_DeInit(CAN_TypeDef* CANx) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - - if (CANx == CAN1) - { - /* Enable CAN1 reset state */ - RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN1, ENABLE); - /* Release CAN1 from reset state */ - RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN1, DISABLE); - } - else - { - /* Enable CAN2 reset state */ - RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN2, ENABLE); - /* Release CAN2 from reset state */ - RCC_APB1PeriphResetCmd(RCC_APB1Periph_CAN2, DISABLE); - } -} - -/** - * @brief Initializes the CAN peripheral according to the specified - * parameters in the CAN_InitStruct. - * @param CANx: where x can be 1 or 2 to to select the CAN - * peripheral. - * @param CAN_InitStruct: pointer to a CAN_InitTypeDef structure that - * contains the configuration information for the - * CAN peripheral. - * @retval Constant indicates initialization succeed which will be - * CAN_InitStatus_Failed or CAN_InitStatus_Success. - */ -uint8_t CAN_Init(CAN_TypeDef* CANx, CAN_InitTypeDef* CAN_InitStruct) -{ - uint8_t InitStatus = CAN_InitStatus_Failed; - uint32_t wait_ack = 0x00000000; - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_TTCM)); - assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_ABOM)); - assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_AWUM)); - assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_NART)); - assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_RFLM)); - assert_param(IS_FUNCTIONAL_STATE(CAN_InitStruct->CAN_TXFP)); - assert_param(IS_CAN_MODE(CAN_InitStruct->CAN_Mode)); - assert_param(IS_CAN_SJW(CAN_InitStruct->CAN_SJW)); - assert_param(IS_CAN_BS1(CAN_InitStruct->CAN_BS1)); - assert_param(IS_CAN_BS2(CAN_InitStruct->CAN_BS2)); - assert_param(IS_CAN_PRESCALER(CAN_InitStruct->CAN_Prescaler)); - - /* Exit from sleep mode */ - CANx->MCR &= (~(uint32_t)CAN_MCR_SLEEP); - - /* Request initialisation */ - CANx->MCR |= CAN_MCR_INRQ ; - - /* Wait the acknowledge */ - while (((CANx->MSR & CAN_MSR_INAK) != CAN_MSR_INAK) && (wait_ack != INAK_TIMEOUT)) - { - wait_ack++; - } - - /* Check acknowledge */ - if ((CANx->MSR & CAN_MSR_INAK) != CAN_MSR_INAK) - { - InitStatus = CAN_InitStatus_Failed; - } - else - { - /* Set the time triggered communication mode */ - if (CAN_InitStruct->CAN_TTCM == ENABLE) - { - CANx->MCR |= CAN_MCR_TTCM; - } - else - { - CANx->MCR &= ~(uint32_t)CAN_MCR_TTCM; - } - - /* Set the automatic bus-off management */ - if (CAN_InitStruct->CAN_ABOM == ENABLE) - { - CANx->MCR |= CAN_MCR_ABOM; - } - else - { - CANx->MCR &= ~(uint32_t)CAN_MCR_ABOM; - } - - /* Set the automatic wake-up mode */ - if (CAN_InitStruct->CAN_AWUM == ENABLE) - { - CANx->MCR |= CAN_MCR_AWUM; - } - else - { - CANx->MCR &= ~(uint32_t)CAN_MCR_AWUM; - } - - /* Set the no automatic retransmission */ - if (CAN_InitStruct->CAN_NART == ENABLE) - { - CANx->MCR |= CAN_MCR_NART; - } - else - { - CANx->MCR &= ~(uint32_t)CAN_MCR_NART; - } - - /* Set the receive FIFO locked mode */ - if (CAN_InitStruct->CAN_RFLM == ENABLE) - { - CANx->MCR |= CAN_MCR_RFLM; - } - else - { - CANx->MCR &= ~(uint32_t)CAN_MCR_RFLM; - } - - /* Set the transmit FIFO priority */ - if (CAN_InitStruct->CAN_TXFP == ENABLE) - { - CANx->MCR |= CAN_MCR_TXFP; - } - else - { - CANx->MCR &= ~(uint32_t)CAN_MCR_TXFP; - } - - /* Set the bit timing register */ - CANx->BTR = (uint32_t)((uint32_t)CAN_InitStruct->CAN_Mode << 30) | \ - ((uint32_t)CAN_InitStruct->CAN_SJW << 24) | \ - ((uint32_t)CAN_InitStruct->CAN_BS1 << 16) | \ - ((uint32_t)CAN_InitStruct->CAN_BS2 << 20) | \ - ((uint32_t)CAN_InitStruct->CAN_Prescaler - 1); - - /* Request leave initialisation */ - CANx->MCR &= ~(uint32_t)CAN_MCR_INRQ; - - /* Wait the acknowledge */ - wait_ack = 0; - - while (((CANx->MSR & CAN_MSR_INAK) == CAN_MSR_INAK) && (wait_ack != INAK_TIMEOUT)) - { - wait_ack++; - } - - /* ...and check acknowledged */ - if ((CANx->MSR & CAN_MSR_INAK) == CAN_MSR_INAK) - { - InitStatus = CAN_InitStatus_Failed; - } - else - { - InitStatus = CAN_InitStatus_Success ; - } - } - - /* At this step, return the status of initialization */ - return InitStatus; -} - -/** - * @brief Initializes the CAN peripheral according to the specified - * parameters in the CAN_FilterInitStruct. - * @param CAN_FilterInitStruct: pointer to a CAN_FilterInitTypeDef - * structure that contains the configuration - * information. - * @retval None. - */ -void CAN_FilterInit(CAN_FilterInitTypeDef* CAN_FilterInitStruct) -{ - uint32_t filter_number_bit_pos = 0; - /* Check the parameters */ - assert_param(IS_CAN_FILTER_NUMBER(CAN_FilterInitStruct->CAN_FilterNumber)); - assert_param(IS_CAN_FILTER_MODE(CAN_FilterInitStruct->CAN_FilterMode)); - assert_param(IS_CAN_FILTER_SCALE(CAN_FilterInitStruct->CAN_FilterScale)); - assert_param(IS_CAN_FILTER_FIFO(CAN_FilterInitStruct->CAN_FilterFIFOAssignment)); - assert_param(IS_FUNCTIONAL_STATE(CAN_FilterInitStruct->CAN_FilterActivation)); - - filter_number_bit_pos = ((uint32_t)1) << CAN_FilterInitStruct->CAN_FilterNumber; - - /* Initialisation mode for the filter */ - CAN1->FMR |= FMR_FINIT; - - /* Filter Deactivation */ - CAN1->FA1R &= ~(uint32_t)filter_number_bit_pos; - - /* Filter Scale */ - if (CAN_FilterInitStruct->CAN_FilterScale == CAN_FilterScale_16bit) - { - /* 16-bit scale for the filter */ - CAN1->FS1R &= ~(uint32_t)filter_number_bit_pos; - - /* First 16-bit identifier and First 16-bit mask */ - /* Or First 16-bit identifier and Second 16-bit identifier */ - CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR1 = - ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdLow) << 16) | - (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdLow); - - /* Second 16-bit identifier and Second 16-bit mask */ - /* Or Third 16-bit identifier and Fourth 16-bit identifier */ - CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR2 = - ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdHigh) << 16) | - (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdHigh); - } - - if (CAN_FilterInitStruct->CAN_FilterScale == CAN_FilterScale_32bit) - { - /* 32-bit scale for the filter */ - CAN1->FS1R |= filter_number_bit_pos; - /* 32-bit identifier or First 32-bit identifier */ - CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR1 = - ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdHigh) << 16) | - (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterIdLow); - /* 32-bit mask or Second 32-bit identifier */ - CAN1->sFilterRegister[CAN_FilterInitStruct->CAN_FilterNumber].FR2 = - ((0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdHigh) << 16) | - (0x0000FFFF & (uint32_t)CAN_FilterInitStruct->CAN_FilterMaskIdLow); - } - - /* Filter Mode */ - if (CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdMask) - { - /*Id/Mask mode for the filter*/ - CAN1->FM1R &= ~(uint32_t)filter_number_bit_pos; - } - else /* CAN_FilterInitStruct->CAN_FilterMode == CAN_FilterMode_IdList */ - { - /*Identifier list mode for the filter*/ - CAN1->FM1R |= (uint32_t)filter_number_bit_pos; - } - - /* Filter FIFO assignment */ - if (CAN_FilterInitStruct->CAN_FilterFIFOAssignment == CAN_Filter_FIFO0) - { - /* FIFO 0 assignation for the filter */ - CAN1->FFA1R &= ~(uint32_t)filter_number_bit_pos; - } - - if (CAN_FilterInitStruct->CAN_FilterFIFOAssignment == CAN_Filter_FIFO1) - { - /* FIFO 1 assignation for the filter */ - CAN1->FFA1R |= (uint32_t)filter_number_bit_pos; - } - - /* Filter activation */ - if (CAN_FilterInitStruct->CAN_FilterActivation == ENABLE) - { - CAN1->FA1R |= filter_number_bit_pos; - } - - /* Leave the initialisation mode for the filter */ - CAN1->FMR &= ~FMR_FINIT; -} - -/** - * @brief Fills each CAN_InitStruct member with its default value. - * @param CAN_InitStruct: pointer to a CAN_InitTypeDef structure which - * will be initialized. - * @retval None. - */ -void CAN_StructInit(CAN_InitTypeDef* CAN_InitStruct) -{ - /* Reset CAN init structure parameters values */ - - /* Initialize the time triggered communication mode */ - CAN_InitStruct->CAN_TTCM = DISABLE; - - /* Initialize the automatic bus-off management */ - CAN_InitStruct->CAN_ABOM = DISABLE; - - /* Initialize the automatic wake-up mode */ - CAN_InitStruct->CAN_AWUM = DISABLE; - - /* Initialize the no automatic retransmission */ - CAN_InitStruct->CAN_NART = DISABLE; - - /* Initialize the receive FIFO locked mode */ - CAN_InitStruct->CAN_RFLM = DISABLE; - - /* Initialize the transmit FIFO priority */ - CAN_InitStruct->CAN_TXFP = DISABLE; - - /* Initialize the CAN_Mode member */ - CAN_InitStruct->CAN_Mode = CAN_Mode_Normal; - - /* Initialize the CAN_SJW member */ - CAN_InitStruct->CAN_SJW = CAN_SJW_1tq; - - /* Initialize the CAN_BS1 member */ - CAN_InitStruct->CAN_BS1 = CAN_BS1_4tq; - - /* Initialize the CAN_BS2 member */ - CAN_InitStruct->CAN_BS2 = CAN_BS2_3tq; - - /* Initialize the CAN_Prescaler member */ - CAN_InitStruct->CAN_Prescaler = 1; -} - -/** - * @brief Select the start bank filter for slave CAN. - * @note This function applies only to STM32 Connectivity line devices. - * @param CAN_BankNumber: Select the start slave bank filter from 1..27. - * @retval None. - */ -void CAN_SlaveStartBank(uint8_t CAN_BankNumber) -{ - /* Check the parameters */ - assert_param(IS_CAN_BANKNUMBER(CAN_BankNumber)); - - /* Enter Initialisation mode for the filter */ - CAN1->FMR |= FMR_FINIT; - - /* Select the start slave bank */ - CAN1->FMR &= (uint32_t)0xFFFFC0F1 ; - CAN1->FMR |= (uint32_t)(CAN_BankNumber)<<8; - - /* Leave Initialisation mode for the filter */ - CAN1->FMR &= ~FMR_FINIT; -} - -/** - * @brief Enables or disables the DBG Freeze for CAN. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param NewState: new state of the CAN peripheral. This parameter can - * be: ENABLE or DISABLE. - * @retval None. - */ -void CAN_DBGFreeze(CAN_TypeDef* CANx, FunctionalState NewState) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_FUNCTIONAL_STATE(NewState)); - - if (NewState != DISABLE) - { - /* Enable Debug Freeze */ - CANx->MCR |= MCR_DBF; - } - else - { - /* Disable Debug Freeze */ - CANx->MCR &= ~MCR_DBF; - } -} - - -/** - * @brief Enables or disabes the CAN Time TriggerOperation communication mode. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param NewState : Mode new state , can be one of @ref FunctionalState. - * @note when enabled, Time stamp (TIME[15:0]) value is sent in the last - * two data bytes of the 8-byte message: TIME[7:0] in data byte 6 - * and TIME[15:8] in data byte 7 - * @note DLC must be programmed as 8 in order Time Stamp (2 bytes) to be - * sent over the CAN bus. - * @retval None - */ -void CAN_TTComModeCmd(CAN_TypeDef* CANx, FunctionalState NewState) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_FUNCTIONAL_STATE(NewState)); - if (NewState != DISABLE) - { - /* Enable the TTCM mode */ - CANx->MCR |= CAN_MCR_TTCM; - - /* Set TGT bits */ - CANx->sTxMailBox[0].TDTR |= ((uint32_t)CAN_TDT0R_TGT); - CANx->sTxMailBox[1].TDTR |= ((uint32_t)CAN_TDT1R_TGT); - CANx->sTxMailBox[2].TDTR |= ((uint32_t)CAN_TDT2R_TGT); - } - else - { - /* Disable the TTCM mode */ - CANx->MCR &= (uint32_t)(~(uint32_t)CAN_MCR_TTCM); - - /* Reset TGT bits */ - CANx->sTxMailBox[0].TDTR &= ((uint32_t)~CAN_TDT0R_TGT); - CANx->sTxMailBox[1].TDTR &= ((uint32_t)~CAN_TDT1R_TGT); - CANx->sTxMailBox[2].TDTR &= ((uint32_t)~CAN_TDT2R_TGT); - } -} -/** - * @brief Initiates the transmission of a message. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param TxMessage: pointer to a structure which contains CAN Id, CAN - * DLC and CAN data. - * @retval The number of the mailbox that is used for transmission - * or CAN_TxStatus_NoMailBox if there is no empty mailbox. - */ -uint8_t CAN_Transmit(CAN_TypeDef* CANx, CanTxMsg* TxMessage) -{ - uint8_t transmit_mailbox = 0; - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_IDTYPE(TxMessage->IDE)); - assert_param(IS_CAN_RTR(TxMessage->RTR)); - assert_param(IS_CAN_DLC(TxMessage->DLC)); - - /* Select one empty transmit mailbox */ - if ((CANx->TSR&CAN_TSR_TME0) == CAN_TSR_TME0) - { - transmit_mailbox = 0; - } - else if ((CANx->TSR&CAN_TSR_TME1) == CAN_TSR_TME1) - { - transmit_mailbox = 1; - } - else if ((CANx->TSR&CAN_TSR_TME2) == CAN_TSR_TME2) - { - transmit_mailbox = 2; - } - else - { - transmit_mailbox = CAN_TxStatus_NoMailBox; - } - - if (transmit_mailbox != CAN_TxStatus_NoMailBox) - { - /* Set up the Id */ - CANx->sTxMailBox[transmit_mailbox].TIR &= TMIDxR_TXRQ; - if (TxMessage->IDE == CAN_Id_Standard) - { - assert_param(IS_CAN_STDID(TxMessage->StdId)); - CANx->sTxMailBox[transmit_mailbox].TIR |= ((TxMessage->StdId << 21) | \ - TxMessage->RTR); - } - else - { - assert_param(IS_CAN_EXTID(TxMessage->ExtId)); - CANx->sTxMailBox[transmit_mailbox].TIR |= ((TxMessage->ExtId << 3) | \ - TxMessage->IDE | \ - TxMessage->RTR); - } - - /* Set up the DLC */ - TxMessage->DLC &= (uint8_t)0x0000000F; - CANx->sTxMailBox[transmit_mailbox].TDTR &= (uint32_t)0xFFFFFFF0; - CANx->sTxMailBox[transmit_mailbox].TDTR |= TxMessage->DLC; - - /* Set up the data field */ - CANx->sTxMailBox[transmit_mailbox].TDLR = (((uint32_t)TxMessage->Data[3] << 24) | - ((uint32_t)TxMessage->Data[2] << 16) | - ((uint32_t)TxMessage->Data[1] << 8) | - ((uint32_t)TxMessage->Data[0])); - CANx->sTxMailBox[transmit_mailbox].TDHR = (((uint32_t)TxMessage->Data[7] << 24) | - ((uint32_t)TxMessage->Data[6] << 16) | - ((uint32_t)TxMessage->Data[5] << 8) | - ((uint32_t)TxMessage->Data[4])); - /* Request transmission */ - CANx->sTxMailBox[transmit_mailbox].TIR |= TMIDxR_TXRQ; - } - return transmit_mailbox; -} - -/** - * @brief Checks the transmission of a message. - * @param CANx: where x can be 1 or 2 to to select the - * CAN peripheral. - * @param TransmitMailbox: the number of the mailbox that is used for - * transmission. - * @retval CAN_TxStatus_Ok if the CAN driver transmits the message, CAN_TxStatus_Failed - * in an other case. - */ -uint8_t CAN_TransmitStatus(CAN_TypeDef* CANx, uint8_t TransmitMailbox) -{ - uint32_t state = 0; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_TRANSMITMAILBOX(TransmitMailbox)); - - switch (TransmitMailbox) - { - case (CAN_TXMAILBOX_0): - state = CANx->TSR & (CAN_TSR_RQCP0 | CAN_TSR_TXOK0 | CAN_TSR_TME0); - break; - case (CAN_TXMAILBOX_1): - state = CANx->TSR & (CAN_TSR_RQCP1 | CAN_TSR_TXOK1 | CAN_TSR_TME1); - break; - case (CAN_TXMAILBOX_2): - state = CANx->TSR & (CAN_TSR_RQCP2 | CAN_TSR_TXOK2 | CAN_TSR_TME2); - break; - default: - state = CAN_TxStatus_Failed; - break; - } - switch (state) - { - /* transmit pending */ - case (0x0): state = CAN_TxStatus_Pending; - break; - /* transmit failed */ - case (CAN_TSR_RQCP0 | CAN_TSR_TME0): state = CAN_TxStatus_Failed; - break; - case (CAN_TSR_RQCP1 | CAN_TSR_TME1): state = CAN_TxStatus_Failed; - break; - case (CAN_TSR_RQCP2 | CAN_TSR_TME2): state = CAN_TxStatus_Failed; - break; - /* transmit succeeded */ - case (CAN_TSR_RQCP0 | CAN_TSR_TXOK0 | CAN_TSR_TME0):state = CAN_TxStatus_Ok; - break; - case (CAN_TSR_RQCP1 | CAN_TSR_TXOK1 | CAN_TSR_TME1):state = CAN_TxStatus_Ok; - break; - case (CAN_TSR_RQCP2 | CAN_TSR_TXOK2 | CAN_TSR_TME2):state = CAN_TxStatus_Ok; - break; - default: state = CAN_TxStatus_Failed; - break; - } - return (uint8_t) state; -} - -/** - * @brief Cancels a transmit request. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param Mailbox: Mailbox number. - * @retval None. - */ -void CAN_CancelTransmit(CAN_TypeDef* CANx, uint8_t Mailbox) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_TRANSMITMAILBOX(Mailbox)); - /* abort transmission */ - switch (Mailbox) - { - case (CAN_TXMAILBOX_0): CANx->TSR |= CAN_TSR_ABRQ0; - break; - case (CAN_TXMAILBOX_1): CANx->TSR |= CAN_TSR_ABRQ1; - break; - case (CAN_TXMAILBOX_2): CANx->TSR |= CAN_TSR_ABRQ2; - break; - default: - break; - } -} - - -/** - * @brief Receives a message. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param FIFONumber: Receive FIFO number, CAN_FIFO0 or CAN_FIFO1. - * @param RxMessage: pointer to a structure receive message which contains - * CAN Id, CAN DLC, CAN datas and FMI number. - * @retval None. - */ -void CAN_Receive(CAN_TypeDef* CANx, uint8_t FIFONumber, CanRxMsg* RxMessage) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_FIFO(FIFONumber)); - /* Get the Id */ - RxMessage->IDE = (uint8_t)0x04 & CANx->sFIFOMailBox[FIFONumber].RIR; - if (RxMessage->IDE == CAN_Id_Standard) - { - RxMessage->StdId = (uint32_t)0x000007FF & (CANx->sFIFOMailBox[FIFONumber].RIR >> 21); - } - else - { - RxMessage->ExtId = (uint32_t)0x1FFFFFFF & (CANx->sFIFOMailBox[FIFONumber].RIR >> 3); - } - - RxMessage->RTR = (uint8_t)0x02 & CANx->sFIFOMailBox[FIFONumber].RIR; - /* Get the DLC */ - RxMessage->DLC = (uint8_t)0x0F & CANx->sFIFOMailBox[FIFONumber].RDTR; - /* Get the FMI */ - RxMessage->FMI = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDTR >> 8); - /* Get the data field */ - RxMessage->Data[0] = (uint8_t)0xFF & CANx->sFIFOMailBox[FIFONumber].RDLR; - RxMessage->Data[1] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDLR >> 8); - RxMessage->Data[2] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDLR >> 16); - RxMessage->Data[3] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDLR >> 24); - RxMessage->Data[4] = (uint8_t)0xFF & CANx->sFIFOMailBox[FIFONumber].RDHR; - RxMessage->Data[5] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDHR >> 8); - RxMessage->Data[6] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDHR >> 16); - RxMessage->Data[7] = (uint8_t)0xFF & (CANx->sFIFOMailBox[FIFONumber].RDHR >> 24); - /* Release the FIFO */ - /* Release FIFO0 */ - if (FIFONumber == CAN_FIFO0) - { - CANx->RF0R |= CAN_RF0R_RFOM0; - } - /* Release FIFO1 */ - else /* FIFONumber == CAN_FIFO1 */ - { - CANx->RF1R |= CAN_RF1R_RFOM1; - } -} - -/** - * @brief Releases the specified FIFO. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param FIFONumber: FIFO to release, CAN_FIFO0 or CAN_FIFO1. - * @retval None. - */ -void CAN_FIFORelease(CAN_TypeDef* CANx, uint8_t FIFONumber) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_FIFO(FIFONumber)); - /* Release FIFO0 */ - if (FIFONumber == CAN_FIFO0) - { - CANx->RF0R |= CAN_RF0R_RFOM0; - } - /* Release FIFO1 */ - else /* FIFONumber == CAN_FIFO1 */ - { - CANx->RF1R |= CAN_RF1R_RFOM1; - } -} - -/** - * @brief Returns the number of pending messages. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param FIFONumber: Receive FIFO number, CAN_FIFO0 or CAN_FIFO1. - * @retval NbMessage : which is the number of pending message. - */ -uint8_t CAN_MessagePending(CAN_TypeDef* CANx, uint8_t FIFONumber) -{ - uint8_t message_pending=0; - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_FIFO(FIFONumber)); - if (FIFONumber == CAN_FIFO0) - { - message_pending = (uint8_t)(CANx->RF0R&(uint32_t)0x03); - } - else if (FIFONumber == CAN_FIFO1) - { - message_pending = (uint8_t)(CANx->RF1R&(uint32_t)0x03); - } - else - { - message_pending = 0; - } - return message_pending; -} - - -/** - * @brief Select the CAN Operation mode. - * @param CAN_OperatingMode : CAN Operating Mode. This parameter can be one - * of @ref CAN_OperatingMode_TypeDef enumeration. - * @retval status of the requested mode which can be - * - CAN_ModeStatus_Failed CAN failed entering the specific mode - * - CAN_ModeStatus_Success CAN Succeed entering the specific mode - - */ -uint8_t CAN_OperatingModeRequest(CAN_TypeDef* CANx, uint8_t CAN_OperatingMode) -{ - uint8_t status = CAN_ModeStatus_Failed; - - /* Timeout for INAK or also for SLAK bits*/ - uint32_t timeout = INAK_TIMEOUT; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_OPERATING_MODE(CAN_OperatingMode)); - - if (CAN_OperatingMode == CAN_OperatingMode_Initialization) - { - /* Request initialisation */ - CANx->MCR = (uint32_t)((CANx->MCR & (uint32_t)(~(uint32_t)CAN_MCR_SLEEP)) | CAN_MCR_INRQ); - - /* Wait the acknowledge */ - while (((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_INAK) && (timeout != 0)) - { - timeout--; - } - if ((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_INAK) - { - status = CAN_ModeStatus_Failed; - } - else - { - status = CAN_ModeStatus_Success; - } - } - else if (CAN_OperatingMode == CAN_OperatingMode_Normal) - { - /* Request leave initialisation and sleep mode and enter Normal mode */ - CANx->MCR &= (uint32_t)(~(CAN_MCR_SLEEP|CAN_MCR_INRQ)); - - /* Wait the acknowledge */ - while (((CANx->MSR & CAN_MODE_MASK) != 0) && (timeout!=0)) - { - timeout--; - } - if ((CANx->MSR & CAN_MODE_MASK) != 0) - { - status = CAN_ModeStatus_Failed; - } - else - { - status = CAN_ModeStatus_Success; - } - } - else if (CAN_OperatingMode == CAN_OperatingMode_Sleep) - { - /* Request Sleep mode */ - CANx->MCR = (uint32_t)((CANx->MCR & (uint32_t)(~(uint32_t)CAN_MCR_INRQ)) | CAN_MCR_SLEEP); - - /* Wait the acknowledge */ - while (((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_SLAK) && (timeout!=0)) - { - timeout--; - } - if ((CANx->MSR & CAN_MODE_MASK) != CAN_MSR_SLAK) - { - status = CAN_ModeStatus_Failed; - } - else - { - status = CAN_ModeStatus_Success; - } - } - else - { - status = CAN_ModeStatus_Failed; - } - - return (uint8_t) status; -} - -/** - * @brief Enters the low power mode. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @retval status: CAN_Sleep_Ok if sleep entered, CAN_Sleep_Failed in an - * other case. - */ -uint8_t CAN_Sleep(CAN_TypeDef* CANx) -{ - uint8_t sleepstatus = CAN_Sleep_Failed; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - - /* Request Sleep mode */ - CANx->MCR = (((CANx->MCR) & (uint32_t)(~(uint32_t)CAN_MCR_INRQ)) | CAN_MCR_SLEEP); - - /* Sleep mode status */ - if ((CANx->MSR & (CAN_MSR_SLAK|CAN_MSR_INAK)) == CAN_MSR_SLAK) - { - /* Sleep mode not entered */ - sleepstatus = CAN_Sleep_Ok; - } - /* return sleep mode status */ - return (uint8_t)sleepstatus; -} - -/** - * @brief Wakes the CAN up. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @retval status: CAN_WakeUp_Ok if sleep mode left, CAN_WakeUp_Failed in an - * other case. - */ -uint8_t CAN_WakeUp(CAN_TypeDef* CANx) -{ - uint32_t wait_slak = SLAK_TIMEOUT; - uint8_t wakeupstatus = CAN_WakeUp_Failed; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - - /* Wake up request */ - CANx->MCR &= ~(uint32_t)CAN_MCR_SLEEP; - - /* Sleep mode status */ - while(((CANx->MSR & CAN_MSR_SLAK) == CAN_MSR_SLAK)&&(wait_slak!=0x00)) - { - wait_slak--; - } - if((CANx->MSR & CAN_MSR_SLAK) != CAN_MSR_SLAK) - { - /* wake up done : Sleep mode exited */ - wakeupstatus = CAN_WakeUp_Ok; - } - /* return wakeup status */ - return (uint8_t)wakeupstatus; -} - - -/** - * @brief Returns the CANx's last error code (LEC). - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @retval CAN_ErrorCode: specifies the Error code : - * - CAN_ERRORCODE_NoErr No Error - * - CAN_ERRORCODE_StuffErr Stuff Error - * - CAN_ERRORCODE_FormErr Form Error - * - CAN_ERRORCODE_ACKErr Acknowledgment Error - * - CAN_ERRORCODE_BitRecessiveErr Bit Recessive Error - * - CAN_ERRORCODE_BitDominantErr Bit Dominant Error - * - CAN_ERRORCODE_CRCErr CRC Error - * - CAN_ERRORCODE_SoftwareSetErr Software Set Error - */ - -uint8_t CAN_GetLastErrorCode(CAN_TypeDef* CANx) -{ - uint8_t errorcode=0; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - - /* Get the error code*/ - errorcode = (((uint8_t)CANx->ESR) & (uint8_t)CAN_ESR_LEC); - - /* Return the error code*/ - return errorcode; -} -/** - * @brief Returns the CANx Receive Error Counter (REC). - * @note In case of an error during reception, this counter is incremented - * by 1 or by 8 depending on the error condition as defined by the CAN - * standard. After every successful reception, the counter is - * decremented by 1 or reset to 120 if its value was higher than 128. - * When the counter value exceeds 127, the CAN controller enters the - * error passive state. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @retval CAN Receive Error Counter. - */ -uint8_t CAN_GetReceiveErrorCounter(CAN_TypeDef* CANx) -{ - uint8_t counter=0; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - - /* Get the Receive Error Counter*/ - counter = (uint8_t)((CANx->ESR & CAN_ESR_REC)>> 24); - - /* Return the Receive Error Counter*/ - return counter; -} - - -/** - * @brief Returns the LSB of the 9-bit CANx Transmit Error Counter(TEC). - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @retval LSB of the 9-bit CAN Transmit Error Counter. - */ -uint8_t CAN_GetLSBTransmitErrorCounter(CAN_TypeDef* CANx) -{ - uint8_t counter=0; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - - /* Get the LSB of the 9-bit CANx Transmit Error Counter(TEC) */ - counter = (uint8_t)((CANx->ESR & CAN_ESR_TEC)>> 16); - - /* Return the LSB of the 9-bit CANx Transmit Error Counter(TEC) */ - return counter; -} - - -/** - * @brief Enables or disables the specified CANx interrupts. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param CAN_IT: specifies the CAN interrupt sources to be enabled or disabled. - * This parameter can be: - * - CAN_IT_TME, - * - CAN_IT_FMP0, - * - CAN_IT_FF0, - * - CAN_IT_FOV0, - * - CAN_IT_FMP1, - * - CAN_IT_FF1, - * - CAN_IT_FOV1, - * - CAN_IT_EWG, - * - CAN_IT_EPV, - * - CAN_IT_LEC, - * - CAN_IT_ERR, - * - CAN_IT_WKU or - * - CAN_IT_SLK. - * @param NewState: new state of the CAN interrupts. - * This parameter can be: ENABLE or DISABLE. - * @retval None. - */ -void CAN_ITConfig(CAN_TypeDef* CANx, uint32_t CAN_IT, FunctionalState NewState) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_IT(CAN_IT)); - assert_param(IS_FUNCTIONAL_STATE(NewState)); - - if (NewState != DISABLE) - { - /* Enable the selected CANx interrupt */ - CANx->IER |= CAN_IT; - } - else - { - /* Disable the selected CANx interrupt */ - CANx->IER &= ~CAN_IT; - } -} -/** - * @brief Checks whether the specified CAN flag is set or not. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param CAN_FLAG: specifies the flag to check. - * This parameter can be one of the following flags: - * - CAN_FLAG_EWG - * - CAN_FLAG_EPV - * - CAN_FLAG_BOF - * - CAN_FLAG_RQCP0 - * - CAN_FLAG_RQCP1 - * - CAN_FLAG_RQCP2 - * - CAN_FLAG_FMP1 - * - CAN_FLAG_FF1 - * - CAN_FLAG_FOV1 - * - CAN_FLAG_FMP0 - * - CAN_FLAG_FF0 - * - CAN_FLAG_FOV0 - * - CAN_FLAG_WKU - * - CAN_FLAG_SLAK - * - CAN_FLAG_LEC - * @retval The new state of CAN_FLAG (SET or RESET). - */ -FlagStatus CAN_GetFlagStatus(CAN_TypeDef* CANx, uint32_t CAN_FLAG) -{ - FlagStatus bitstatus = RESET; - - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_GET_FLAG(CAN_FLAG)); - - - if((CAN_FLAG & CAN_FLAGS_ESR) != (uint32_t)RESET) - { - /* Check the status of the specified CAN flag */ - if ((CANx->ESR & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) - { - /* CAN_FLAG is set */ - bitstatus = SET; - } - else - { - /* CAN_FLAG is reset */ - bitstatus = RESET; - } - } - else if((CAN_FLAG & CAN_FLAGS_MSR) != (uint32_t)RESET) - { - /* Check the status of the specified CAN flag */ - if ((CANx->MSR & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) - { - /* CAN_FLAG is set */ - bitstatus = SET; - } - else - { - /* CAN_FLAG is reset */ - bitstatus = RESET; - } - } - else if((CAN_FLAG & CAN_FLAGS_TSR) != (uint32_t)RESET) - { - /* Check the status of the specified CAN flag */ - if ((CANx->TSR & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) - { - /* CAN_FLAG is set */ - bitstatus = SET; - } - else - { - /* CAN_FLAG is reset */ - bitstatus = RESET; - } - } - else if((CAN_FLAG & CAN_FLAGS_RF0R) != (uint32_t)RESET) - { - /* Check the status of the specified CAN flag */ - if ((CANx->RF0R & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) - { - /* CAN_FLAG is set */ - bitstatus = SET; - } - else - { - /* CAN_FLAG is reset */ - bitstatus = RESET; - } - } - else /* If(CAN_FLAG & CAN_FLAGS_RF1R != (uint32_t)RESET) */ - { - /* Check the status of the specified CAN flag */ - if ((uint32_t)(CANx->RF1R & (CAN_FLAG & 0x000FFFFF)) != (uint32_t)RESET) - { - /* CAN_FLAG is set */ - bitstatus = SET; - } - else - { - /* CAN_FLAG is reset */ - bitstatus = RESET; - } - } - /* Return the CAN_FLAG status */ - return bitstatus; -} - -/** - * @brief Clears the CAN's pending flags. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param CAN_FLAG: specifies the flag to clear. - * This parameter can be one of the following flags: - * - CAN_FLAG_RQCP0 - * - CAN_FLAG_RQCP1 - * - CAN_FLAG_RQCP2 - * - CAN_FLAG_FF1 - * - CAN_FLAG_FOV1 - * - CAN_FLAG_FF0 - * - CAN_FLAG_FOV0 - * - CAN_FLAG_WKU - * - CAN_FLAG_SLAK - * - CAN_FLAG_LEC - * @retval None. - */ -void CAN_ClearFlag(CAN_TypeDef* CANx, uint32_t CAN_FLAG) -{ - uint32_t flagtmp=0; - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_CLEAR_FLAG(CAN_FLAG)); - - if (CAN_FLAG == CAN_FLAG_LEC) /* ESR register */ - { - /* Clear the selected CAN flags */ - CANx->ESR = (uint32_t)RESET; - } - else /* MSR or TSR or RF0R or RF1R */ - { - flagtmp = CAN_FLAG & 0x000FFFFF; - - if ((CAN_FLAG & CAN_FLAGS_RF0R)!=(uint32_t)RESET) - { - /* Receive Flags */ - CANx->RF0R = (uint32_t)(flagtmp); - } - else if ((CAN_FLAG & CAN_FLAGS_RF1R)!=(uint32_t)RESET) - { - /* Receive Flags */ - CANx->RF1R = (uint32_t)(flagtmp); - } - else if ((CAN_FLAG & CAN_FLAGS_TSR)!=(uint32_t)RESET) - { - /* Transmit Flags */ - CANx->TSR = (uint32_t)(flagtmp); - } - else /* If((CAN_FLAG & CAN_FLAGS_MSR)!=(uint32_t)RESET) */ - { - /* Operating mode Flags */ - CANx->MSR = (uint32_t)(flagtmp); - } - } -} - -/** - * @brief Checks whether the specified CANx interrupt has occurred or not. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param CAN_IT: specifies the CAN interrupt source to check. - * This parameter can be one of the following flags: - * - CAN_IT_TME - * - CAN_IT_FMP0 - * - CAN_IT_FF0 - * - CAN_IT_FOV0 - * - CAN_IT_FMP1 - * - CAN_IT_FF1 - * - CAN_IT_FOV1 - * - CAN_IT_WKU - * - CAN_IT_SLK - * - CAN_IT_EWG - * - CAN_IT_EPV - * - CAN_IT_BOF - * - CAN_IT_LEC - * - CAN_IT_ERR - * @retval The current state of CAN_IT (SET or RESET). - */ -ITStatus CAN_GetITStatus(CAN_TypeDef* CANx, uint32_t CAN_IT) -{ - ITStatus itstatus = RESET; - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_IT(CAN_IT)); - - /* check the enable interrupt bit */ - if((CANx->IER & CAN_IT) != RESET) - { - /* in case the Interrupt is enabled, .... */ - switch (CAN_IT) - { - case CAN_IT_TME: - /* Check CAN_TSR_RQCPx bits */ - itstatus = CheckITStatus(CANx->TSR, CAN_TSR_RQCP0|CAN_TSR_RQCP1|CAN_TSR_RQCP2); - break; - case CAN_IT_FMP0: - /* Check CAN_RF0R_FMP0 bit */ - itstatus = CheckITStatus(CANx->RF0R, CAN_RF0R_FMP0); - break; - case CAN_IT_FF0: - /* Check CAN_RF0R_FULL0 bit */ - itstatus = CheckITStatus(CANx->RF0R, CAN_RF0R_FULL0); - break; - case CAN_IT_FOV0: - /* Check CAN_RF0R_FOVR0 bit */ - itstatus = CheckITStatus(CANx->RF0R, CAN_RF0R_FOVR0); - break; - case CAN_IT_FMP1: - /* Check CAN_RF1R_FMP1 bit */ - itstatus = CheckITStatus(CANx->RF1R, CAN_RF1R_FMP1); - break; - case CAN_IT_FF1: - /* Check CAN_RF1R_FULL1 bit */ - itstatus = CheckITStatus(CANx->RF1R, CAN_RF1R_FULL1); - break; - case CAN_IT_FOV1: - /* Check CAN_RF1R_FOVR1 bit */ - itstatus = CheckITStatus(CANx->RF1R, CAN_RF1R_FOVR1); - break; - case CAN_IT_WKU: - /* Check CAN_MSR_WKUI bit */ - itstatus = CheckITStatus(CANx->MSR, CAN_MSR_WKUI); - break; - case CAN_IT_SLK: - /* Check CAN_MSR_SLAKI bit */ - itstatus = CheckITStatus(CANx->MSR, CAN_MSR_SLAKI); - break; - case CAN_IT_EWG: - /* Check CAN_ESR_EWGF bit */ - itstatus = CheckITStatus(CANx->ESR, CAN_ESR_EWGF); - break; - case CAN_IT_EPV: - /* Check CAN_ESR_EPVF bit */ - itstatus = CheckITStatus(CANx->ESR, CAN_ESR_EPVF); - break; - case CAN_IT_BOF: - /* Check CAN_ESR_BOFF bit */ - itstatus = CheckITStatus(CANx->ESR, CAN_ESR_BOFF); - break; - case CAN_IT_LEC: - /* Check CAN_ESR_LEC bit */ - itstatus = CheckITStatus(CANx->ESR, CAN_ESR_LEC); - break; - case CAN_IT_ERR: - /* Check CAN_MSR_ERRI bit */ - itstatus = CheckITStatus(CANx->MSR, CAN_MSR_ERRI); - break; - default : - /* in case of error, return RESET */ - itstatus = RESET; - break; - } - } - else - { - /* in case the Interrupt is not enabled, return RESET */ - itstatus = RESET; - } - - /* Return the CAN_IT status */ - return itstatus; -} - -/** - * @brief Clears the CANx's interrupt pending bits. - * @param CANx: where x can be 1 or 2 to to select the CAN peripheral. - * @param CAN_IT: specifies the interrupt pending bit to clear. - * - CAN_IT_TME - * - CAN_IT_FF0 - * - CAN_IT_FOV0 - * - CAN_IT_FF1 - * - CAN_IT_FOV1 - * - CAN_IT_WKU - * - CAN_IT_SLK - * - CAN_IT_EWG - * - CAN_IT_EPV - * - CAN_IT_BOF - * - CAN_IT_LEC - * - CAN_IT_ERR - * @retval None. - */ -void CAN_ClearITPendingBit(CAN_TypeDef* CANx, uint32_t CAN_IT) -{ - /* Check the parameters */ - assert_param(IS_CAN_ALL_PERIPH(CANx)); - assert_param(IS_CAN_CLEAR_IT(CAN_IT)); - - switch (CAN_IT) - { - case CAN_IT_TME: - /* Clear CAN_TSR_RQCPx (rc_w1)*/ - CANx->TSR = CAN_TSR_RQCP0|CAN_TSR_RQCP1|CAN_TSR_RQCP2; - break; - case CAN_IT_FF0: - /* Clear CAN_RF0R_FULL0 (rc_w1)*/ - CANx->RF0R = CAN_RF0R_FULL0; - break; - case CAN_IT_FOV0: - /* Clear CAN_RF0R_FOVR0 (rc_w1)*/ - CANx->RF0R = CAN_RF0R_FOVR0; - break; - case CAN_IT_FF1: - /* Clear CAN_RF1R_FULL1 (rc_w1)*/ - CANx->RF1R = CAN_RF1R_FULL1; - break; - case CAN_IT_FOV1: - /* Clear CAN_RF1R_FOVR1 (rc_w1)*/ - CANx->RF1R = CAN_RF1R_FOVR1; - break; - case CAN_IT_WKU: - /* Clear CAN_MSR_WKUI (rc_w1)*/ - CANx->MSR = CAN_MSR_WKUI; - break; - case CAN_IT_SLK: - /* Clear CAN_MSR_SLAKI (rc_w1)*/ - CANx->MSR = CAN_MSR_SLAKI; - break; - case CAN_IT_EWG: - /* Clear CAN_MSR_ERRI (rc_w1) */ - CANx->MSR = CAN_MSR_ERRI; - /* Note : the corresponding Flag is cleared by hardware depending - of the CAN Bus status*/ - break; - case CAN_IT_EPV: - /* Clear CAN_MSR_ERRI (rc_w1) */ - CANx->MSR = CAN_MSR_ERRI; - /* Note : the corresponding Flag is cleared by hardware depending - of the CAN Bus status*/ - break; - case CAN_IT_BOF: - /* Clear CAN_MSR_ERRI (rc_w1) */ - CANx->MSR = CAN_MSR_ERRI; - /* Note : the corresponding Flag is cleared by hardware depending - of the CAN Bus status*/ - break; - case CAN_IT_LEC: - /* Clear LEC bits */ - CANx->ESR = RESET; - /* Clear CAN_MSR_ERRI (rc_w1) */ - CANx->MSR = CAN_MSR_ERRI; - break; - case CAN_IT_ERR: - /*Clear LEC bits */ - CANx->ESR = RESET; - /* Clear CAN_MSR_ERRI (rc_w1) */ - CANx->MSR = CAN_MSR_ERRI; - /* Note : BOFF, EPVF and EWGF Flags are cleared by hardware depending - of the CAN Bus status*/ - break; - default : - break; - } -} - -/** - * @brief Checks whether the CAN interrupt has occurred or not. - * @param CAN_Reg: specifies the CAN interrupt register to check. - * @param It_Bit: specifies the interrupt source bit to check. - * @retval The new state of the CAN Interrupt (SET or RESET). - */ -static ITStatus CheckITStatus(uint32_t CAN_Reg, uint32_t It_Bit) -{ - ITStatus pendingbitstatus = RESET; - - if ((CAN_Reg & It_Bit) != (uint32_t)RESET) - { - /* CAN_IT is set */ - pendingbitstatus = SET; - } - else - { - /* CAN_IT is reset */ - pendingbitstatus = RESET; - } - return pendingbitstatus; -} - - -/** - * @} - */ - -/** - * @} - */ - -/** - * @} - */ - -/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |