diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_spi.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_spi.c | 2298 |
1 files changed, 2298 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_spi.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_spi.c new file mode 100644 index 0000000000..bbfa57e91a --- /dev/null +++ b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_spi.c @@ -0,0 +1,2298 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_spi.c + * @author MCD Application Team + * @version V1.4.0 + * @date 14-August-2015 + * @brief SPI HAL module driver. + * + * This file provides firmware functions to manage the following + * functionalities of the Serial Peripheral Interface (SPI) peripheral: + * + Initialization and de-initialization functions + * + IO operation functions + * + Peripheral Control functions + * + Peripheral State functions + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The SPI HAL driver can be used as follows: + + (#) Declare a SPI_HandleTypeDef handle structure, for example: + SPI_HandleTypeDef hspi; + + (#)Initialize the SPI low level resources by implementing the HAL_SPI_MspInit ()API: + (##) Enable the SPIx interface clock + (##) SPI pins configuration + (+++) Enable the clock for the SPI GPIOs + (+++) Configure these SPI pins as alternate function push-pull + (##) NVIC configuration if you need to use interrupt process + (+++) Configure the SPIx interrupt priority + (+++) Enable the NVIC SPI IRQ handle + (##) DMA Configuration if you need to use DMA process + (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive stream + (+++) Enable the DMAx interface clock using + (+++) Configure the DMA handle parameters + (+++) Configure the DMA Tx or Rx Stream + (+++) Associate the initialized hdma_tx handle to the hspi DMA Tx or Rx handle + (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx or Rx Stream + + (#) Program the Mode, Direction , Data size, Baudrate Prescaler, NSS + management, Clock polarity and phase, FirstBit and CRC configuration in the hspi Init structure. + + (#) Initialize the SPI registers by calling the HAL_SPI_Init() API: + (++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc) + by calling the customized HAL_SPI_MspInit() API. + [..] + Circular mode restriction: + (#) The DMA circular mode cannot be used when the SPI is configured in these modes: + (##) Master 2Lines RxOnly + (##) Master 1Line Rx + (#) The CRC feature is not managed when the DMA circular mode is enabled + (#) When the SPI DMA Pause/Stop features are used, we must use the following APIs + the HAL_SPI_DMAPause()/ HAL_SPI_DMAStop() only under the SPI callbacks + + + + @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 SPI SPI + * @brief SPI HAL module driver + * @{ + */ + +#ifdef HAL_SPI_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define SPI_TIMEOUT_VALUE 10 +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @addtogroup SPI_Private_Functions + * @{ + */ +static void SPI_TxCloseIRQHandler(SPI_HandleTypeDef *hspi); +static void SPI_TxISR(SPI_HandleTypeDef *hspi); +static void SPI_RxCloseIRQHandler(SPI_HandleTypeDef *hspi); +static void SPI_2LinesRxISR(SPI_HandleTypeDef *hspi); +static void SPI_RxISR(SPI_HandleTypeDef *hspi); +static void SPI_DMAEndTransmitReceive(SPI_HandleTypeDef *hspi); +static void SPI_DMATransmitCplt(DMA_HandleTypeDef *hdma); +static void SPI_DMAReceiveCplt(DMA_HandleTypeDef *hdma); +static void SPI_DMATransmitReceiveCplt(DMA_HandleTypeDef *hdma); +static void SPI_DMAHalfTransmitCplt(DMA_HandleTypeDef *hdma); +static void SPI_DMAHalfReceiveCplt(DMA_HandleTypeDef *hdma); +static void SPI_DMAHalfTransmitReceiveCplt(DMA_HandleTypeDef *hdma); +static void SPI_DMAError(DMA_HandleTypeDef *hdma); +static HAL_StatusTypeDef SPI_WaitOnFlagUntilTimeout(SPI_HandleTypeDef *hspi, uint32_t Flag, FlagStatus Status, uint32_t Timeout); +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ +/** @defgroup SPI_Exported_Functions SPI Exported Functions + * @{ + */ + +/** @defgroup SPI_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This subsection provides a set of functions allowing to initialize and + de-initialize the SPIx peripheral: + + (+) User must implement HAL_SPI_MspInit() function in which he configures + all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ). + + (+) Call the function HAL_SPI_Init() to configure the selected device with + the selected configuration: + (++) Mode + (++) Direction + (++) Data Size + (++) Clock Polarity and Phase + (++) NSS Management + (++) BaudRate Prescaler + (++) FirstBit + (++) TIMode + (++) CRC Calculation + (++) CRC Polynomial if CRC enabled + + (+) Call the function HAL_SPI_DeInit() to restore the default configuration + of the selected SPIx peripheral. + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the SPI according to the specified parameters + * in the SPI_InitTypeDef and create the associated handle. + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi) +{ + /* Check the SPI handle allocation */ + if(hspi == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_SPI_MODE(hspi->Init.Mode)); + assert_param(IS_SPI_DIRECTION_MODE(hspi->Init.Direction)); + assert_param(IS_SPI_DATASIZE(hspi->Init.DataSize)); + assert_param(IS_SPI_CPOL(hspi->Init.CLKPolarity)); + assert_param(IS_SPI_CPHA(hspi->Init.CLKPhase)); + assert_param(IS_SPI_NSS(hspi->Init.NSS)); + assert_param(IS_SPI_BAUDRATE_PRESCALER(hspi->Init.BaudRatePrescaler)); + assert_param(IS_SPI_FIRST_BIT(hspi->Init.FirstBit)); + assert_param(IS_SPI_TIMODE(hspi->Init.TIMode)); + assert_param(IS_SPI_CRC_CALCULATION(hspi->Init.CRCCalculation)); + assert_param(IS_SPI_CRC_POLYNOMIAL(hspi->Init.CRCPolynomial)); + + if(hspi->State == HAL_SPI_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hspi->Lock = HAL_UNLOCKED; + /* Init the low level hardware : GPIO, CLOCK, NVIC... */ + HAL_SPI_MspInit(hspi); + } + + hspi->State = HAL_SPI_STATE_BUSY; + + /* Disable the selected SPI peripheral */ + __HAL_SPI_DISABLE(hspi); + + /*----------------------- SPIx CR1 & CR2 Configuration ---------------------*/ + /* Configure : SPI Mode, Communication Mode, Data size, Clock polarity and phase, NSS management, + Communication speed, First bit and CRC calculation state */ + hspi->Instance->CR1 = (hspi->Init.Mode | hspi->Init.Direction | hspi->Init.DataSize | + hspi->Init.CLKPolarity | hspi->Init.CLKPhase | (hspi->Init.NSS & SPI_CR1_SSM) | + hspi->Init.BaudRatePrescaler | hspi->Init.FirstBit | hspi->Init.CRCCalculation); + + /* Configure : NSS management */ + hspi->Instance->CR2 = (((hspi->Init.NSS >> 16) & SPI_CR2_SSOE) | hspi->Init.TIMode); + + /*---------------------------- SPIx CRCPOLY Configuration ------------------*/ + /* Configure : CRC Polynomial */ + hspi->Instance->CRCPR = hspi->Init.CRCPolynomial; + + /* Activate the SPI mode (Make sure that I2SMOD bit in I2SCFGR register is reset) */ + hspi->Instance->I2SCFGR &= (uint32_t)(~SPI_I2SCFGR_I2SMOD); + + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + hspi->State = HAL_SPI_STATE_READY; + + return HAL_OK; +} + +/** + * @brief DeInitializes the SPI peripheral + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_DeInit(SPI_HandleTypeDef *hspi) +{ + /* Check the SPI handle allocation */ + if(hspi == NULL) + { + return HAL_ERROR; + } + + /* Disable the SPI Peripheral Clock */ + __HAL_SPI_DISABLE(hspi); + + /* DeInit the low level hardware: GPIO, CLOCK, NVIC... */ + HAL_SPI_MspDeInit(hspi); + + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + hspi->State = HAL_SPI_STATE_RESET; + + /* Release Lock */ + __HAL_UNLOCK(hspi); + + return HAL_OK; +} + +/** + * @brief SPI MSP Init + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ + __weak void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi) + { + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_MspInit could be implemented in the user file + */ +} + +/** + * @brief SPI MSP DeInit + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ + __weak void HAL_SPI_MspDeInit(SPI_HandleTypeDef *hspi) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup SPI_Exported_Functions_Group2 IO operation functions + * @brief Data transfers functions + * +@verbatim + ============================================================================== + ##### IO operation functions ##### + =============================================================================== + This subsection provides a set of functions allowing to manage the SPI + data transfers. + + [..] The SPI supports master and slave mode : + + (#) There are two modes of transfer: + (++) Blocking mode: The communication is performed in polling mode. + The HAL status of all data processing is returned by the same function + after finishing transfer. + (++) No-Blocking mode: The communication is performed using Interrupts + or DMA, These APIs return the HAL status. + The end of the data processing will be indicated through the + dedicated SPI IRQ when using Interrupt mode or the DMA IRQ when + using DMA mode. + The HAL_SPI_TxCpltCallback(), HAL_SPI_RxCpltCallback() and HAL_SPI_TxRxCpltCallback() user callbacks + will be executed respectively at the end of the transmit or Receive process + The HAL_SPI_ErrorCallback()user callback will be executed when a communication error is detected + + (#) APIs provided for these 2 transfer modes (Blocking mode or Non blocking mode using either Interrupt or DMA) + exist for 1Line (simplex) and 2Lines (full duplex) modes. + +@endverbatim + * @{ + */ + +/** + * @brief Transmit an amount of data in blocking mode + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pData: pointer to data buffer + * @param Size: amount of data to be sent + * @param Timeout: Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_Transmit(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + + if(hspi->State == HAL_SPI_STATE_READY) + { + if((pData == NULL ) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_SPI_DIRECTION_2LINES_OR_1LINE(hspi->Init.Direction)); + + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Configure communication */ + hspi->State = HAL_SPI_STATE_BUSY_TX; + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->pTxBuffPtr = pData; + hspi->TxXferSize = Size; + hspi->TxXferCount = Size; + + /*Init field not used in handle to zero */ + hspi->TxISR = 0; + hspi->RxISR = 0; + hspi->RxXferSize = 0; + hspi->RxXferCount = 0; + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + if(hspi->Init.Direction == SPI_DIRECTION_1LINE) + { + /* Configure communication direction : 1Line */ + SPI_1LINE_TX(hspi); + } + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + /* Transmit data in 8 Bit mode */ + if(hspi->Init.DataSize == SPI_DATASIZE_8BIT) + { + if((hspi->Init.Mode == SPI_MODE_SLAVE)|| (hspi->TxXferCount == 0x01)) + { + hspi->Instance->DR = (*hspi->pTxBuffPtr++); + hspi->TxXferCount--; + } + while(hspi->TxXferCount > 0) + { + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + hspi->Instance->DR = (*hspi->pTxBuffPtr++); + hspi->TxXferCount--; + } + /* Enable CRC Transmission */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + } + /* Transmit data in 16 Bit mode */ + else + { + if((hspi->Init.Mode == SPI_MODE_SLAVE) || (hspi->TxXferCount == 0x01)) + { + hspi->Instance->DR = *((uint16_t*)hspi->pTxBuffPtr); + hspi->pTxBuffPtr+=2; + hspi->TxXferCount--; + } + while(hspi->TxXferCount > 0) + { + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + hspi->Instance->DR = *((uint16_t*)hspi->pTxBuffPtr); + hspi->pTxBuffPtr+=2; + hspi->TxXferCount--; + } + /* Enable CRC Transmission */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + } + + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + return HAL_TIMEOUT; + } + + /* Wait until Busy flag is reset before disabling SPI */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_BSY, SET, Timeout) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + return HAL_TIMEOUT; + } + + /* Clear OVERRUN flag in 2 Lines communication mode because received is not read */ + if(hspi->Init.Direction == SPI_DIRECTION_2LINES) + { + __HAL_SPI_CLEAR_OVRFLAG(hspi); + } + + hspi->State = HAL_SPI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive an amount of data in blocking mode + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pData: pointer to data buffer + * @param Size: amount of data to be sent + * @param Timeout: Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_Receive(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout) +{ + __IO uint16_t tmpreg; + uint32_t tmp = 0; + + if(hspi->State == HAL_SPI_STATE_READY) + { + if((pData == NULL ) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Configure communication */ + hspi->State = HAL_SPI_STATE_BUSY_RX; + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->pRxBuffPtr = pData; + hspi->RxXferSize = Size; + hspi->RxXferCount = Size; + + /*Init field not used in handle to zero */ + hspi->RxISR = 0; + hspi->TxISR = 0; + hspi->TxXferSize = 0; + hspi->TxXferCount = 0; + + /* Configure communication direction : 1Line */ + if(hspi->Init.Direction == SPI_DIRECTION_1LINE) + { + SPI_1LINE_RX(hspi); + } + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + if((hspi->Init.Mode == SPI_MODE_MASTER) && (hspi->Init.Direction == SPI_DIRECTION_2LINES)) + { + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Call transmit-receive function to send Dummy data on Tx line and generate clock on CLK line */ + return HAL_SPI_TransmitReceive(hspi, pData, pData, Size, Timeout); + } + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + /* Receive data in 8 Bit mode */ + if(hspi->Init.DataSize == SPI_DATASIZE_8BIT) + { + while(hspi->RxXferCount > 1) + { + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + (*hspi->pRxBuffPtr++) = hspi->Instance->DR; + hspi->RxXferCount--; + } + /* Enable CRC Transmission */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + } + /* Receive data in 16 Bit mode */ + else + { + while(hspi->RxXferCount > 1) + { + /* Wait until RXNE flag is set to read data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + *((uint16_t*)hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->pRxBuffPtr+=2; + hspi->RxXferCount--; + } + /* Enable CRC Transmission */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + } + + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Receive last data in 8 Bit mode */ + if(hspi->Init.DataSize == SPI_DATASIZE_8BIT) + { + (*hspi->pRxBuffPtr++) = hspi->Instance->DR; + } + /* Receive last data in 16 Bit mode */ + else + { + *((uint16_t*)hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->pRxBuffPtr+=2; + } + hspi->RxXferCount--; + + /* Wait until RXNE flag is set: CRC Received */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + return HAL_TIMEOUT; + } + + /* Read CRC to Flush RXNE flag */ + tmpreg = hspi->Instance->DR; + UNUSED(tmpreg); + } + + if((hspi->Init.Mode == SPI_MODE_MASTER)&&((hspi->Init.Direction == SPI_DIRECTION_1LINE)||(hspi->Init.Direction == SPI_DIRECTION_2LINES_RXONLY))) + { + /* Disable SPI peripheral */ + __HAL_SPI_DISABLE(hspi); + } + + hspi->State = HAL_SPI_STATE_READY; + + tmp = __HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR); + /* Check if CRC error occurred */ + if((hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) && (tmp != RESET)) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + + /* Reset CRC Calculation */ + SPI_RESET_CRC(hspi); + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_ERROR; + } + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit and Receive an amount of data in blocking mode + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pTxData: pointer to transmission data buffer + * @param pRxData: pointer to reception data buffer to be + * @param Size: amount of data to be sent + * @param Timeout: Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_TransmitReceive(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) +{ + __IO uint16_t tmpreg; + uint32_t tmpstate = 0, tmp = 0; + + tmpstate = hspi->State; + if((tmpstate == HAL_SPI_STATE_READY) || (tmpstate == HAL_SPI_STATE_BUSY_RX)) + { + if((pTxData == NULL ) || (pRxData == NULL ) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_SPI_DIRECTION_2LINES(hspi->Init.Direction)); + + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Don't overwrite in case of HAL_SPI_STATE_BUSY_RX */ + if(hspi->State == HAL_SPI_STATE_READY) + { + hspi->State = HAL_SPI_STATE_BUSY_TX_RX; + } + + /* Configure communication */ + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->pRxBuffPtr = pRxData; + hspi->RxXferSize = Size; + hspi->RxXferCount = Size; + + hspi->pTxBuffPtr = pTxData; + hspi->TxXferSize = Size; + hspi->TxXferCount = Size; + + /*Init field not used in handle to zero */ + hspi->RxISR = 0; + hspi->TxISR = 0; + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + /* Transmit and Receive data in 16 Bit mode */ + if(hspi->Init.DataSize == SPI_DATASIZE_16BIT) + { + if((hspi->Init.Mode == SPI_MODE_SLAVE) || ((hspi->Init.Mode == SPI_MODE_MASTER) && (hspi->TxXferCount == 0x01))) + { + hspi->Instance->DR = *((uint16_t*)hspi->pTxBuffPtr); + hspi->pTxBuffPtr+=2; + hspi->TxXferCount--; + } + if(hspi->TxXferCount == 0) + { + /* Enable CRC Transmission */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + *((uint16_t*)hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->pRxBuffPtr+=2; + hspi->RxXferCount--; + } + else + { + while(hspi->TxXferCount > 0) + { + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + hspi->Instance->DR = *((uint16_t*)hspi->pTxBuffPtr); + hspi->pTxBuffPtr+=2; + hspi->TxXferCount--; + + /* Enable CRC Transmission */ + if((hspi->TxXferCount == 0) && (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + *((uint16_t*)hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->pRxBuffPtr+=2; + hspi->RxXferCount--; + } + /* Receive the last byte */ + if(hspi->Init.Mode == SPI_MODE_SLAVE) + { + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + *((uint16_t*)hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->pRxBuffPtr+=2; + hspi->RxXferCount--; + } + } + } + /* Transmit and Receive data in 8 Bit mode */ + else + { + if((hspi->Init.Mode == SPI_MODE_SLAVE) || ((hspi->Init.Mode == SPI_MODE_MASTER) && (hspi->TxXferCount == 0x01))) + { + hspi->Instance->DR = (*hspi->pTxBuffPtr++); + hspi->TxXferCount--; + } + if(hspi->TxXferCount == 0) + { + /* Enable CRC Transmission */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + (*hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->RxXferCount--; + } + else + { + while(hspi->TxXferCount > 0) + { + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + hspi->Instance->DR = (*hspi->pTxBuffPtr++); + hspi->TxXferCount--; + + /* Enable CRC Transmission */ + if((hspi->TxXferCount == 0) && (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)) + { + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + (*hspi->pRxBuffPtr++) = hspi->Instance->DR; + hspi->RxXferCount--; + } + if(hspi->Init.Mode == SPI_MODE_SLAVE) + { + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + return HAL_TIMEOUT; + } + + (*hspi->pRxBuffPtr++) = hspi->Instance->DR; + hspi->RxXferCount--; + } + } + } + + /* Read CRC from DR to close CRC calculation process */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, Timeout) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + return HAL_TIMEOUT; + } + /* Read CRC */ + tmpreg = hspi->Instance->DR; + UNUSED(tmpreg); + } + + /* Wait until Busy flag is reset before disabling SPI */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_BSY, SET, Timeout) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + return HAL_TIMEOUT; + } + + hspi->State = HAL_SPI_STATE_READY; + + tmp = __HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR); + /* Check if CRC error occurred */ + if((hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) && (tmp != RESET)) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_ERROR; + } + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit an amount of data in no-blocking mode with Interrupt + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pData: pointer to data buffer + * @param Size: amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_Transmit_IT(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size) +{ + if(hspi->State == HAL_SPI_STATE_READY) + { + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_SPI_DIRECTION_2LINES_OR_1LINE(hspi->Init.Direction)); + + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Configure communication */ + hspi->State = HAL_SPI_STATE_BUSY_TX; + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->TxISR = &SPI_TxISR; + hspi->pTxBuffPtr = pData; + hspi->TxXferSize = Size; + hspi->TxXferCount = Size; + + /*Init field not used in handle to zero */ + hspi->RxISR = 0; + hspi->RxXferSize = 0; + hspi->RxXferCount = 0; + + /* Configure communication direction : 1Line */ + if(hspi->Init.Direction == SPI_DIRECTION_1LINE) + { + SPI_1LINE_TX(hspi); + } + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + if (hspi->Init.Direction == SPI_DIRECTION_2LINES) + { + __HAL_SPI_ENABLE_IT(hspi, (SPI_IT_TXE)); + }else + { + /* Enable TXE and ERR interrupt */ + __HAL_SPI_ENABLE_IT(hspi, (SPI_IT_TXE | SPI_IT_ERR)); + } + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive an amount of data in no-blocking mode with Interrupt + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pData: pointer to data buffer + * @param Size: amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_Receive_IT(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size) +{ + if(hspi->State == HAL_SPI_STATE_READY) + { + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Configure communication */ + hspi->State = HAL_SPI_STATE_BUSY_RX; + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->RxISR = &SPI_RxISR; + hspi->pRxBuffPtr = pData; + hspi->RxXferSize = Size; + hspi->RxXferCount = Size ; + + /*Init field not used in handle to zero */ + hspi->TxISR = 0; + hspi->TxXferSize = 0; + hspi->TxXferCount = 0; + + /* Configure communication direction : 1Line */ + if(hspi->Init.Direction == SPI_DIRECTION_1LINE) + { + SPI_1LINE_RX(hspi); + } + else if((hspi->Init.Direction == SPI_DIRECTION_2LINES) && (hspi->Init.Mode == SPI_MODE_MASTER)) + { + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Call transmit-receive function to send Dummy data on Tx line and generate clock on CLK line */ + return HAL_SPI_TransmitReceive_IT(hspi, pData, pData, Size); + } + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + /* Enable TXE and ERR interrupt */ + __HAL_SPI_ENABLE_IT(hspi, (SPI_IT_RXNE | SPI_IT_ERR)); + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Note : The SPI must be enabled after unlocking current process + to avoid the risk of SPI interrupt handle execution before current + process unlock */ + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit and Receive an amount of data in no-blocking mode with Interrupt + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pTxData: pointer to transmission data buffer + * @param pRxData: pointer to reception data buffer to be + * @param Size: amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_TransmitReceive_IT(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) +{ + uint32_t tmpstate = 0; + + tmpstate = hspi->State; + if((tmpstate == HAL_SPI_STATE_READY) || \ + ((hspi->Init.Mode == SPI_MODE_MASTER) && (hspi->Init.Direction == SPI_DIRECTION_2LINES) && (tmpstate == HAL_SPI_STATE_BUSY_RX))) + { + if((pTxData == NULL ) || (pRxData == NULL ) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_SPI_DIRECTION_2LINES(hspi->Init.Direction)); + + /* Process locked */ + __HAL_LOCK(hspi); + + /* Don't overwrite in case of HAL_SPI_STATE_BUSY_RX */ + if(hspi->State != HAL_SPI_STATE_BUSY_RX) + { + hspi->State = HAL_SPI_STATE_BUSY_TX_RX; + } + + /* Configure communication */ + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->TxISR = &SPI_TxISR; + hspi->pTxBuffPtr = pTxData; + hspi->TxXferSize = Size; + hspi->TxXferCount = Size; + + hspi->RxISR = &SPI_2LinesRxISR; + hspi->pRxBuffPtr = pRxData; + hspi->RxXferSize = Size; + hspi->RxXferCount = Size; + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + /* Enable TXE, RXNE and ERR interrupt */ + __HAL_SPI_ENABLE_IT(hspi, (SPI_IT_TXE | SPI_IT_RXNE | SPI_IT_ERR)); + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit an amount of data in no-blocking mode with DMA + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pData: pointer to data buffer + * @param Size: amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_Transmit_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size) +{ + if(hspi->State == HAL_SPI_STATE_READY) + { + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_SPI_DIRECTION_2LINES_OR_1LINE(hspi->Init.Direction)); + + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Configure communication */ + hspi->State = HAL_SPI_STATE_BUSY_TX; + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->pTxBuffPtr = pData; + hspi->TxXferSize = Size; + hspi->TxXferCount = Size; + + /*Init field not used in handle to zero */ + hspi->TxISR = 0; + hspi->RxISR = 0; + hspi->RxXferSize = 0; + hspi->RxXferCount = 0; + + /* Configure communication direction : 1Line */ + if(hspi->Init.Direction == SPI_DIRECTION_1LINE) + { + SPI_1LINE_TX(hspi); + } + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + /* Set the SPI TxDMA Half transfer complete callback */ + hspi->hdmatx->XferHalfCpltCallback = SPI_DMAHalfTransmitCplt; + + /* Set the SPI TxDMA transfer complete callback */ + hspi->hdmatx->XferCpltCallback = SPI_DMATransmitCplt; + + /* Set the DMA error callback */ + hspi->hdmatx->XferErrorCallback = SPI_DMAError; + + /* Enable the Tx DMA Stream */ + HAL_DMA_Start_IT(hspi->hdmatx, (uint32_t)hspi->pTxBuffPtr, (uint32_t)&hspi->Instance->DR, hspi->TxXferCount); + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + /* Enable Tx DMA Request */ + hspi->Instance->CR2 |= SPI_CR2_TXDMAEN; + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Receive an amount of data in no-blocking mode with DMA + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pData: pointer to data buffer + * @note When the CRC feature is enabled the pData Length must be Size + 1. + * @param Size: amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_Receive_DMA(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size) +{ + if(hspi->State == HAL_SPI_STATE_READY) + { + if((pData == NULL) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Configure communication */ + hspi->State = HAL_SPI_STATE_BUSY_RX; + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->pRxBuffPtr = pData; + hspi->RxXferSize = Size; + hspi->RxXferCount = Size; + + /*Init field not used in handle to zero */ + hspi->RxISR = 0; + hspi->TxISR = 0; + hspi->TxXferSize = 0; + hspi->TxXferCount = 0; + + /* Configure communication direction : 1Line */ + if(hspi->Init.Direction == SPI_DIRECTION_1LINE) + { + SPI_1LINE_RX(hspi); + } + else if((hspi->Init.Direction == SPI_DIRECTION_2LINES)&&(hspi->Init.Mode == SPI_MODE_MASTER)) + { + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Call transmit-receive function to send Dummy data on Tx line and generate clock on CLK line */ + return HAL_SPI_TransmitReceive_DMA(hspi, pData, pData, Size); + } + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + /* Set the SPI RxDMA Half transfer complete callback */ + hspi->hdmarx->XferHalfCpltCallback = SPI_DMAHalfReceiveCplt; + + /* Set the SPI Rx DMA transfer complete callback */ + hspi->hdmarx->XferCpltCallback = SPI_DMAReceiveCplt; + + /* Set the DMA error callback */ + hspi->hdmarx->XferErrorCallback = SPI_DMAError; + + /* Enable the Rx DMA Stream */ + HAL_DMA_Start_IT(hspi->hdmarx, (uint32_t)&hspi->Instance->DR, (uint32_t)hspi->pRxBuffPtr, hspi->RxXferCount); + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + /* Enable Rx DMA Request */ + hspi->Instance->CR2 |= SPI_CR2_RXDMAEN; + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Transmit and Receive an amount of data in no-blocking mode with DMA + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param pTxData: pointer to transmission data buffer + * @param pRxData: pointer to reception data buffer + * @note When the CRC feature is enabled the pRxData Length must be Size + 1 + * @param Size: amount of data to be sent + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_TransmitReceive_DMA(SPI_HandleTypeDef *hspi, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size) +{ + uint32_t tmpstate = 0; + tmpstate = hspi->State; + if((tmpstate == HAL_SPI_STATE_READY) || ((hspi->Init.Mode == SPI_MODE_MASTER) && \ + (hspi->Init.Direction == SPI_DIRECTION_2LINES) && (tmpstate == HAL_SPI_STATE_BUSY_RX))) + { + if((pTxData == NULL ) || (pRxData == NULL ) || (Size == 0)) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_SPI_DIRECTION_2LINES(hspi->Init.Direction)); + + /* Process locked */ + __HAL_LOCK(hspi); + + /* Don't overwrite in case of HAL_SPI_STATE_BUSY_RX */ + if(hspi->State != HAL_SPI_STATE_BUSY_RX) + { + hspi->State = HAL_SPI_STATE_BUSY_TX_RX; + } + + /* Configure communication */ + hspi->ErrorCode = HAL_SPI_ERROR_NONE; + + hspi->pTxBuffPtr = (uint8_t*)pTxData; + hspi->TxXferSize = Size; + hspi->TxXferCount = Size; + + hspi->pRxBuffPtr = (uint8_t*)pRxData; + hspi->RxXferSize = Size; + hspi->RxXferCount = Size; + + /*Init field not used in handle to zero */ + hspi->RxISR = 0; + hspi->TxISR = 0; + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + /* Check if we are in Rx only or in Rx/Tx Mode and configure the DMA transfer complete callback */ + if(hspi->State == HAL_SPI_STATE_BUSY_RX) + { + /* Set the SPI Rx DMA Half transfer complete callback */ + hspi->hdmarx->XferHalfCpltCallback = SPI_DMAHalfReceiveCplt; + + hspi->hdmarx->XferCpltCallback = SPI_DMAReceiveCplt; + } + else + { + /* Set the SPI Tx/Rx DMA Half transfer complete callback */ + hspi->hdmarx->XferHalfCpltCallback = SPI_DMAHalfTransmitReceiveCplt; + + hspi->hdmarx->XferCpltCallback = SPI_DMATransmitReceiveCplt; + } + + /* Set the DMA error callback */ + hspi->hdmarx->XferErrorCallback = SPI_DMAError; + + /* Enable the Rx DMA Stream */ + HAL_DMA_Start_IT(hspi->hdmarx, (uint32_t)&hspi->Instance->DR, (uint32_t)hspi->pRxBuffPtr, hspi->RxXferCount); + + /* Enable Rx DMA Request */ + hspi->Instance->CR2 |= SPI_CR2_RXDMAEN; + + /* Set the SPI Tx DMA transfer complete callback as NULL because the communication closing + is performed in DMA reception complete callback */ + hspi->hdmatx->XferCpltCallback = NULL; + + if(hspi->State == HAL_SPI_STATE_BUSY_TX_RX) + { + /* Set the DMA error callback */ + hspi->hdmatx->XferErrorCallback = SPI_DMAError; + } + else + { + hspi->hdmatx->XferErrorCallback = NULL; + } + + /* Enable the Tx DMA Stream */ + HAL_DMA_Start_IT(hspi->hdmatx, (uint32_t)hspi->pTxBuffPtr, (uint32_t)&hspi->Instance->DR, hspi->TxXferCount); + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + /* Check if the SPI is already enabled */ + if((hspi->Instance->CR1 &SPI_CR1_SPE) != SPI_CR1_SPE) + { + /* Enable SPI peripheral */ + __HAL_SPI_ENABLE(hspi); + } + + /* Enable Tx DMA Request */ + hspi->Instance->CR2 |= SPI_CR2_TXDMAEN; + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Pauses the DMA Transfer. + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for the specified SPI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_DMAPause(SPI_HandleTypeDef *hspi) +{ + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Disable the SPI DMA Tx & Rx requests */ + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_TXDMAEN); + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_RXDMAEN); + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_OK; +} + +/** + * @brief Resumes the DMA Transfer. + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for the specified SPI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_DMAResume(SPI_HandleTypeDef *hspi) +{ + /* Process Locked */ + __HAL_LOCK(hspi); + + /* Enable the SPI DMA Tx & Rx requests */ + hspi->Instance->CR2 |= SPI_CR2_TXDMAEN; + hspi->Instance->CR2 |= SPI_CR2_RXDMAEN; + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_OK; +} + +/** + * @brief Stops the DMA Transfer. + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for the specified SPI module. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_SPI_DMAStop(SPI_HandleTypeDef *hspi) +{ + /* The Lock is not implemented on this API to allow the user application + to call the HAL SPI API under callbacks HAL_SPI_TxCpltCallback() or HAL_SPI_RxCpltCallback() or HAL_SPI_TxRxCpltCallback(): + when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated + and the correspond call back is executed HAL_SPI_TxCpltCallback() or HAL_SPI_RxCpltCallback() or HAL_SPI_TxRxCpltCallback() + */ + + /* Abort the SPI DMA tx Stream */ + if(hspi->hdmatx != NULL) + { + HAL_DMA_Abort(hspi->hdmatx); + } + /* Abort the SPI DMA rx Stream */ + if(hspi->hdmarx != NULL) + { + HAL_DMA_Abort(hspi->hdmarx); + } + + /* Disable the SPI DMA Tx & Rx requests */ + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_TXDMAEN); + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_RXDMAEN); + + hspi->State = HAL_SPI_STATE_READY; + + return HAL_OK; +} + +/** + * @brief This function handles SPI interrupt request. + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval HAL status + */ +void HAL_SPI_IRQHandler(SPI_HandleTypeDef *hspi) +{ + uint32_t tmp1 = 0, tmp2 = 0, tmp3 = 0; + + tmp1 = __HAL_SPI_GET_FLAG(hspi, SPI_FLAG_RXNE); + tmp2 = __HAL_SPI_GET_IT_SOURCE(hspi, SPI_IT_RXNE); + tmp3 = __HAL_SPI_GET_FLAG(hspi, SPI_FLAG_OVR); + /* SPI in mode Receiver and Overrun not occurred ---------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET) && (tmp3 == RESET)) + { + hspi->RxISR(hspi); + return; + } + + tmp1 = __HAL_SPI_GET_FLAG(hspi, SPI_FLAG_TXE); + tmp2 = __HAL_SPI_GET_IT_SOURCE(hspi, SPI_IT_TXE); + /* SPI in mode Transmitter ---------------------------------------------------*/ + if((tmp1 != RESET) && (tmp2 != RESET)) + { + hspi->TxISR(hspi); + return; + } + + if(__HAL_SPI_GET_IT_SOURCE(hspi, SPI_IT_ERR) != RESET) + { + /* SPI CRC error interrupt occurred ---------------------------------------*/ + if(__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR) != RESET) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + __HAL_SPI_CLEAR_CRCERRFLAG(hspi); + } + /* SPI Mode Fault error interrupt occurred --------------------------------*/ + if(__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_MODF) != RESET) + { + hspi->ErrorCode |= HAL_SPI_ERROR_MODF; + __HAL_SPI_CLEAR_MODFFLAG(hspi); + } + + /* SPI Overrun error interrupt occurred -----------------------------------*/ + if(__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_OVR) != RESET) + { + if(hspi->State != HAL_SPI_STATE_BUSY_TX) + { + hspi->ErrorCode |= HAL_SPI_ERROR_OVR; + __HAL_SPI_CLEAR_OVRFLAG(hspi); + } + } + + /* SPI Frame error interrupt occurred -------------------------------------*/ + if(__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_FRE) != RESET) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FRE; + __HAL_SPI_CLEAR_FREFLAG(hspi); + } + + /* Call the Error call Back in case of Errors */ + if(hspi->ErrorCode!=HAL_SPI_ERROR_NONE) + { + hspi->State = HAL_SPI_STATE_READY; + HAL_SPI_ErrorCallback(hspi); + } + } +} + +/** + * @brief Tx Transfer completed callbacks + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ +__weak void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_TxCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Transfer completed callbacks + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ +__weak void HAL_SPI_RxCpltCallback(SPI_HandleTypeDef *hspi) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_RxCpltCallback() could be implemented in the user file + */ +} + +/** + * @brief Tx and Rx Transfer completed callbacks + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ +__weak void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_TxRxCpltCallback() could be implemented in the user file + */ +} + +/** + * @brief Tx Half Transfer completed callbacks + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ +__weak void HAL_SPI_TxHalfCpltCallback(SPI_HandleTypeDef *hspi) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_TxHalfCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Rx Half Transfer completed callbacks + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ +__weak void HAL_SPI_RxHalfCpltCallback(SPI_HandleTypeDef *hspi) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_RxHalfCpltCallback() could be implemented in the user file + */ +} + +/** + * @brief Tx and Rx Transfer completed callbacks + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ +__weak void HAL_SPI_TxRxHalfCpltCallback(SPI_HandleTypeDef *hspi) +{ + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_SPI_TxRxHalfCpltCallback() could be implemented in the user file + */ +} + +/** + * @brief SPI error callbacks + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ + __weak void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi) +{ + /* NOTE : - This function Should not be modified, when the callback is needed, + the HAL_SPI_ErrorCallback() could be implemented in the user file. + - The ErrorCode parameter in the hspi handle is updated by the SPI processes + and user can use HAL_SPI_GetError() API to check the latest error occurred. + */ +} + +/** + * @} + */ + +/** @defgroup SPI_Exported_Functions_Group3 Peripheral State and Errors functions + * @brief SPI control functions + * +@verbatim + =============================================================================== + ##### Peripheral State and Errors functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to control the SPI. + (+) HAL_SPI_GetState() API can be helpful to check in run-time the state of the SPI peripheral + (+) HAL_SPI_GetError() check in run-time Errors occurring during communication +@endverbatim + * @{ + */ + +/** + * @brief Return the SPI state + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval HAL state + */ +HAL_SPI_StateTypeDef HAL_SPI_GetState(SPI_HandleTypeDef *hspi) +{ + return hspi->State; +} + +/** + * @brief Return the SPI error code + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval SPI Error Code + */ +uint32_t HAL_SPI_GetError(SPI_HandleTypeDef *hspi) +{ + return hspi->ErrorCode; +} + +/** + * @} + */ + + /** + * @brief Interrupt Handler to close Tx transfer + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval void + */ +static void SPI_TxCloseIRQHandler(SPI_HandleTypeDef *hspi) +{ + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + /* Disable TXE interrupt */ + __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_TXE )); + + /* Disable ERR interrupt if Receive process is finished */ + if(__HAL_SPI_GET_IT_SOURCE(hspi, SPI_IT_RXNE) == RESET) + { + __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_ERR)); + + /* Wait until Busy flag is reset before disabling SPI */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_BSY, SET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + /* Clear OVERRUN flag in 2 Lines communication mode because received is not read */ + if(hspi->Init.Direction == SPI_DIRECTION_2LINES) + { + __HAL_SPI_CLEAR_OVRFLAG(hspi); + } + + /* Check if Errors has been detected during transfer */ + if(hspi->ErrorCode == HAL_SPI_ERROR_NONE) + { + /* Check if we are in Tx or in Rx/Tx Mode */ + if(hspi->State == HAL_SPI_STATE_BUSY_TX_RX) + { + /* Set state to READY before run the Callback Complete */ + hspi->State = HAL_SPI_STATE_READY; + HAL_SPI_TxRxCpltCallback(hspi); + } + else + { + /* Set state to READY before run the Callback Complete */ + hspi->State = HAL_SPI_STATE_READY; + HAL_SPI_TxCpltCallback(hspi); + } + } + else + { + /* Set state to READY before run the Callback Complete */ + hspi->State = HAL_SPI_STATE_READY; + /* Call Error call back in case of Error */ + HAL_SPI_ErrorCallback(hspi); + } + } +} + +/** + * @brief Interrupt Handler to transmit amount of data in no-blocking mode + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval void + */ +static void SPI_TxISR(SPI_HandleTypeDef *hspi) +{ + /* Transmit data in 8 Bit mode */ + if(hspi->Init.DataSize == SPI_DATASIZE_8BIT) + { + hspi->Instance->DR = (*hspi->pTxBuffPtr++); + } + /* Transmit data in 16 Bit mode */ + else + { + hspi->Instance->DR = *((uint16_t*)hspi->pTxBuffPtr); + hspi->pTxBuffPtr+=2; + } + hspi->TxXferCount--; + + if(hspi->TxXferCount == 0) + { + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + /* calculate and transfer CRC on Tx line */ + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + SPI_TxCloseIRQHandler(hspi); + } +} + +/** + * @brief Interrupt Handler to close Rx transfer + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval void + */ +static void SPI_RxCloseIRQHandler(SPI_HandleTypeDef *hspi) +{ + __IO uint16_t tmpreg; + + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + /* Wait until RXNE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + /* Read CRC to reset RXNE flag */ + tmpreg = hspi->Instance->DR; + UNUSED(tmpreg); + + /* Wait until RXNE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, SET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + /* Check if CRC error occurred */ + if(__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR) != RESET) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + + /* Reset CRC Calculation */ + SPI_RESET_CRC(hspi); + } + } + + /* Disable RXNE and ERR interrupt */ + __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_RXNE)); + + /* if Transmit process is finished */ + if(__HAL_SPI_GET_IT_SOURCE(hspi, SPI_IT_TXE) == RESET) + { + /* Disable ERR interrupt */ + __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_ERR)); + + if((hspi->Init.Mode == SPI_MODE_MASTER)&&((hspi->Init.Direction == SPI_DIRECTION_1LINE)||(hspi->Init.Direction == SPI_DIRECTION_2LINES_RXONLY))) + { + /* Disable SPI peripheral */ + __HAL_SPI_DISABLE(hspi); + } + + /* Check if Errors has been detected during transfer */ + if(hspi->ErrorCode == HAL_SPI_ERROR_NONE) + { + /* Check if we are in Rx or in Rx/Tx Mode */ + if(hspi->State == HAL_SPI_STATE_BUSY_TX_RX) + { + /* Set state to READY before run the Callback Complete */ + hspi->State = HAL_SPI_STATE_READY; + HAL_SPI_TxRxCpltCallback(hspi); + } + else + { + /* Set state to READY before run the Callback Complete */ + hspi->State = HAL_SPI_STATE_READY; + HAL_SPI_RxCpltCallback(hspi); + } + } + else + { + /* Set state to READY before run the Callback Complete */ + hspi->State = HAL_SPI_STATE_READY; + /* Call Error call back in case of Error */ + HAL_SPI_ErrorCallback(hspi); + } + } +} + +/** + * @brief Interrupt Handler to receive amount of data in 2Lines mode + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval void + */ +static void SPI_2LinesRxISR(SPI_HandleTypeDef *hspi) +{ + /* Receive data in 8 Bit mode */ + if(hspi->Init.DataSize == SPI_DATASIZE_8BIT) + { + (*hspi->pRxBuffPtr++) = hspi->Instance->DR; + } + /* Receive data in 16 Bit mode */ + else + { + *((uint16_t*)hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->pRxBuffPtr+=2; + } + hspi->RxXferCount--; + + if(hspi->RxXferCount==0) + { + SPI_RxCloseIRQHandler(hspi); + } +} + +/** + * @brief Interrupt Handler to receive amount of data in no-blocking mode + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval void + */ +static void SPI_RxISR(SPI_HandleTypeDef *hspi) +{ + /* Receive data in 8 Bit mode */ + if(hspi->Init.DataSize == SPI_DATASIZE_8BIT) + { + (*hspi->pRxBuffPtr++) = hspi->Instance->DR; + } + /* Receive data in 16 Bit mode */ + else + { + *((uint16_t*)hspi->pRxBuffPtr) = hspi->Instance->DR; + hspi->pRxBuffPtr+=2; + } + hspi->RxXferCount--; + + /* Enable CRC Transmission */ + if((hspi->RxXferCount == 1) && (hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE)) + { + /* Set CRC Next to calculate CRC on Rx side */ + hspi->Instance->CR1 |= SPI_CR1_CRCNEXT; + } + + if(hspi->RxXferCount == 0) + { + SPI_RxCloseIRQHandler(hspi); + } +} + +/** + * @brief DMA SPI transmit process complete callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SPI_DMATransmitCplt(DMA_HandleTypeDef *hdma) +{ + SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* DMA Normal Mode */ + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) + { + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + /* Disable Tx DMA Request */ + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_TXDMAEN); + + /* Wait until Busy flag is reset before disabling SPI */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_BSY, SET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + hspi->TxXferCount = 0; + + hspi->State = HAL_SPI_STATE_READY; + } + + /* Clear OVERRUN flag in 2 Lines communication mode because received is not read */ + if(hspi->Init.Direction == SPI_DIRECTION_2LINES) + { + __HAL_SPI_CLEAR_OVRFLAG(hspi); + } + + /* Check if Errors has been detected during transfer */ + if(hspi->ErrorCode != HAL_SPI_ERROR_NONE) + { + HAL_SPI_ErrorCallback(hspi); + } + else + { + HAL_SPI_TxCpltCallback(hspi); + } +} + +/** + * @brief DMA SPI receive process complete callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SPI_DMAReceiveCplt(DMA_HandleTypeDef *hdma) +{ + __IO uint16_t tmpreg; + + SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + /* DMA Normal mode */ + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) + { + if((hspi->Init.Direction == SPI_DIRECTION_2LINES)&&(hspi->Init.Mode == SPI_MODE_MASTER)) + { + SPI_DMAEndTransmitReceive(hspi); + } + /* SPI_DIRECTION_1LINE or SPI_DIRECTION_2LINES_RXONLY */ + else + { + if((hspi->Init.Mode == SPI_MODE_MASTER)&&((hspi->Init.Direction == SPI_DIRECTION_1LINE)||(hspi->Init.Direction == SPI_DIRECTION_2LINES_RXONLY))) + { + /* Disable SPI peripheral */ + __HAL_SPI_DISABLE(hspi); + } + + /* Disable Rx DMA Request */ + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_RXDMAEN); + + hspi->RxXferCount = 0; + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + /* Wait until RXNE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + /* Read CRC */ + tmpreg = hspi->Instance->DR; + UNUSED(tmpreg); + + /* Wait until RXNE flag is set */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, SET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + /* Check if CRC error occurred */ + if(__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR) != RESET) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + __HAL_SPI_CLEAR_CRCERRFLAG(hspi); + } + } + } + + hspi->State = HAL_SPI_STATE_READY; + + /* Check if Errors has been detected during transfer */ + if(hspi->ErrorCode != HAL_SPI_ERROR_NONE) + { + HAL_SPI_ErrorCallback(hspi); + } + else + { + HAL_SPI_RxCpltCallback(hspi); + } + } + else + { + HAL_SPI_RxCpltCallback(hspi); + } +} + +/** + * @brief End DMA SPI transmit receive process + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @retval None + */ +static void SPI_DMAEndTransmitReceive(SPI_HandleTypeDef *hspi) +{ + __IO uint16_t tmpreg; + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + /* Check if CRC is done on going (RXNE flag set) */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, SET, SPI_TIMEOUT_VALUE) == HAL_OK) + { + /* Wait until RXNE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_RXNE, RESET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + } + /* Read CRC */ + tmpreg = hspi->Instance->DR; + UNUSED(tmpreg); + + /* Check if CRC error occurred */ + if(__HAL_SPI_GET_FLAG(hspi, SPI_FLAG_CRCERR) != RESET) + { + hspi->ErrorCode |= HAL_SPI_ERROR_CRC; + __HAL_SPI_CLEAR_CRCERRFLAG(hspi); + } + } + + /* Wait until TXE flag is set to send data */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_TXE, RESET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + /* Disable Tx DMA Request */ + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_TXDMAEN); + + /* Wait until Busy flag is reset before disabling SPI */ + if(SPI_WaitOnFlagUntilTimeout(hspi, SPI_FLAG_BSY, SET, SPI_TIMEOUT_VALUE) != HAL_OK) + { + hspi->ErrorCode |= HAL_SPI_ERROR_FLAG; + } + + /* Disable Rx DMA Request */ + hspi->Instance->CR2 &= (uint32_t)(~SPI_CR2_RXDMAEN); + + hspi->TxXferCount = 0; + hspi->RxXferCount = 0; +} + +/** + * @brief DMA SPI transmit receive process complete callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SPI_DMATransmitReceiveCplt(DMA_HandleTypeDef *hdma) +{ + SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) + { /**/ + SPI_DMAEndTransmitReceive(hspi); + + hspi->State = HAL_SPI_STATE_READY; + + /* Check if Errors has been detected during transfer */ + if(hspi->ErrorCode != HAL_SPI_ERROR_NONE) + { + HAL_SPI_ErrorCallback(hspi); + } + else + { + HAL_SPI_TxRxCpltCallback(hspi); + } + } + else + { + HAL_SPI_TxRxCpltCallback(hspi); + } +} + +/** + * @brief DMA SPI half transmit process complete callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SPI_DMAHalfTransmitCplt(DMA_HandleTypeDef *hdma) +{ + SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + HAL_SPI_TxHalfCpltCallback(hspi); +} + +/** + * @brief DMA SPI half receive process complete callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SPI_DMAHalfReceiveCplt(DMA_HandleTypeDef *hdma) +{ + SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + HAL_SPI_RxHalfCpltCallback(hspi); +} + +/** + * @brief DMA SPI Half transmit receive process complete callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SPI_DMAHalfTransmitReceiveCplt(DMA_HandleTypeDef *hdma) +{ + SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + HAL_SPI_TxRxHalfCpltCallback(hspi); +} + +/** + * @brief DMA SPI communication error callback + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void SPI_DMAError(DMA_HandleTypeDef *hdma) +{ + SPI_HandleTypeDef* hspi = (SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + hspi->TxXferCount = 0; + hspi->RxXferCount = 0; + hspi->State= HAL_SPI_STATE_READY; + hspi->ErrorCode |= HAL_SPI_ERROR_DMA; + HAL_SPI_ErrorCallback(hspi); +} + +/** + * @brief This function handles SPI Communication Timeout. + * @param hspi: pointer to a SPI_HandleTypeDef structure that contains + * the configuration information for SPI module. + * @param Flag: SPI flag to check + * @param Status: Flag status to check: RESET or set + * @param Timeout: Timeout duration + * @retval HAL status + */ +static HAL_StatusTypeDef SPI_WaitOnFlagUntilTimeout(SPI_HandleTypeDef *hspi, uint32_t Flag, FlagStatus Status, uint32_t Timeout) +{ + uint32_t tickstart = 0; + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait until flag is set */ + if(Status == RESET) + { + while(__HAL_SPI_GET_FLAG(hspi, Flag) == RESET) + { + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) + { + /* Disable the SPI and reset the CRC: the CRC value should be cleared + on both master and slave sides in order to resynchronize the master + and slave for their respective CRC calculation */ + + /* Disable TXE, RXNE and ERR interrupts for the interrupt process */ + __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_TXE | SPI_IT_RXNE | SPI_IT_ERR)); + + /* Disable SPI peripheral */ + __HAL_SPI_DISABLE(hspi); + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + hspi->State= HAL_SPI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_TIMEOUT; + } + } + } + } + else + { + while(__HAL_SPI_GET_FLAG(hspi, Flag) != RESET) + { + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) + { + /* Disable the SPI and reset the CRC: the CRC value should be cleared + on both master and slave sides in order to resynchronize the master + and slave for their respective CRC calculation */ + + /* Disable TXE, RXNE and ERR interrupts for the interrupt process */ + __HAL_SPI_DISABLE_IT(hspi, (SPI_IT_TXE | SPI_IT_RXNE | SPI_IT_ERR)); + + /* Disable SPI peripheral */ + __HAL_SPI_DISABLE(hspi); + + /* Reset CRC Calculation */ + if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLE) + { + SPI_RESET_CRC(hspi); + } + + hspi->State= HAL_SPI_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hspi); + + return HAL_TIMEOUT; + } + } + } + } + return HAL_OK; +} + + +/** + * @} + */ + +#endif /* HAL_SPI_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |