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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/stm32f4xx_hal_spi.c
- Revision:
- 87:085cde657901
- Child:
- 106:ced8cbb51063
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/stm32f4xx_hal_spi.c Sat Feb 08 19:45:06 2014 +0000
@@ -0,0 +1,2021 @@
+/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_spi.c
+ * @author MCD Application Team
+ * @version V1.0.0RC2
+ * @date 04-February-2014
+ * @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 implement 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 initilalized 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 customed HAL_SPI_MspInit(&hspi) API.
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2014 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
+ * @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 -----------------------------------------------*/
+static void SPI_TxCloseIRQHandler(SPI_HandleTypeDef *hspi);
+static void SPI_TxISR(SPI_HandleTypeDef *hspi);
+static void SPI_RxClose_IRQHandler(SPI_HandleTypeDef *hspi);
+static void SPI_2LinesRxISR(SPI_HandleTypeDef *hspi);
+static void SPI_RxISR(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_DMAError(DMA_HandleTypeDef *hdma);
+static HAL_StatusTypeDef SPI_WaitOnFlagUntilTimeout(SPI_HandleTypeDef *hspi, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
+
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup SPI_Private_Functions
+ * @{
+ */
+
+/** @defgroup SPI_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-initialiaze 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 periperal.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the SPI according to the specified parameters
+ * in the SPI_InitTypeDef and create the associated handle.
+ * @param hspi: SPI handle
+ * @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)
+ {
+ /* Init the low level hardware : GPIO, CLOCK, NVIC... */
+ HAL_SPI_MspInit(hspi);
+ }
+
+ hspi->State = HAL_SPI_STATE_BUSY;
+
+ /* Disble 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: SPI handle
+ * @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;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief SPI MSP Init
+ * @param hspi: SPI handle
+ * @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 implenetd in the user file
+ */
+}
+
+/**
+ * @brief SPI MSP DeInit
+ * @param hspi: SPI handle
+ * @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 implenetd in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SPI_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 mode 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 API's 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 respectivelly at the end of the transmit or Receive process
+ The HAL_SPI_ErrorCallback()user callback will be executed when a communication error is detected
+
+ (#) Blocking mode API's are :
+ (++) HAL_SPI_Transmit()in 1Line (simplex) and 2Lines (full duplex) mode
+ (++) HAL_SPI_Receive() in 1Line (simplex) and 2Lines (full duplex) mode
+ (++) HAL_SPI_TransmitReceive() in full duplex mode
+
+ (#) Non-Blocking mode API's with Interrupt are :
+ (++) HAL_SPI_Transmit_IT()in 1Line (simplex) and 2Lines (full duplex) mode
+ (++) HAL_SPI_Receive_IT() in 1Line (simplex) and 2Lines (full duplex) mode
+ (++) HAL_SPI_TransmitReceive_IT()in full duplex mode
+ (++) HAL_SPI_IRQHandler()
+
+ (#) No-Blocking mode functions with DMA are :
+ (++) HAL_SPI_Transmit_DMA()in 1Line (simplex) and 2Lines (full duplex) mode
+ (++) HAL_SPI_Receive_DMA() in 1Line (simplex) and 2Lines (full duplex) mode
+ (++) HAL_SPI_TransmitReceie_DMA() in full duplex mode
+
+ (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode:
+ (++) HAL_SPI_TxCpltCallback()
+ (++) HAL_SPI_RxCpltCallback()
+ (++) HAL_SPI_ErrorCallback()
+ (++) HAL_SPI_TxRxCpltCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmit an amount of data in blocking mode
+ * @param hspi: SPI handle
+ * @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_ENABLED)
+ {
+ __HAL_SPI_RESET_CRC(hspi);
+ }
+
+ if(hspi->Init.Direction == SPI_DIRECTION_1LINE)
+ {
+ /* Configure communication direction : 1Line */
+ __HAL_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)
+ {
+
+ 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_ENABLED)
+ {
+ hspi->Instance->CR1 |= SPI_CR1_CRCNEXT;
+ }
+ }
+ /* Transmit data in 16 Bit mode */
+ else
+ {
+ 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_ENABLED)
+ {
+ 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 OVERUN 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: SPI handle
+ * @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)
+ {
+ __HAL_SPI_1LINE_RX(hspi);
+ }
+
+ /* Reset CRC Calculation */
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ __HAL_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_ENABLED)
+ {
+ 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_ENABLED)
+ {
+ 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_ENABLED)
+ {
+ 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;
+ }
+
+ 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_ENABLED) && (tmp != RESET))
+ {
+ hspi->ErrorCode |= HAL_SPI_ERROR_CRC;
+
+ /* Reset CRC Calculation */
+ __HAL_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: SPI handle
+ * @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 tmp = 0;
+
+ tmp = hspi->State;
+ if((tmp == HAL_SPI_STATE_READY) || (tmp == 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_ENABLED)
+ {
+ __HAL_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)
+ {
+ 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_ENABLED)
+ {
+ 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_ENABLED))
+ {
+ 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--;
+ }
+
+ /* 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
+ {
+
+ hspi->Instance->DR = (*hspi->pTxBuffPtr++);
+ hspi->TxXferCount--;
+
+ if(hspi->TxXferCount == 0)
+ {
+ /* Enable CRC Transmission */
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ 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_ENABLED))
+ {
+ 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--;
+ }
+
+ /* 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_ENABLED)
+ {
+ /* 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;
+ }
+
+ /* 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_ENABLED) && (tmp != RESET))
+ {
+ hspi->ErrorCode |= HAL_SPI_ERROR_CRC;
+
+ /* Reset CRC Calculation */
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ __HAL_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: SPI handle
+ * @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)
+ {
+ __HAL_SPI_1LINE_TX(hspi);
+ }
+
+ /* Reset CRC Calculation */
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ __HAL_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: SPI handle
+ * @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)
+ {
+ __HAL_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_ENABLED)
+ {
+ __HAL_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: SPI handle
+ * @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 tmp = 0;
+
+ tmp = hspi->State;
+ if((tmp == HAL_SPI_STATE_READY) || (tmp == 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->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_ENABLED)
+ {
+ __HAL_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: SPI handle
+ * @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)
+ {
+ __HAL_SPI_1LINE_TX(hspi);
+ }
+
+ /* Reset CRC Calculation */
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ __HAL_SPI_RESET_CRC(hspi);
+ }
+
+ /* 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);
+
+ /* Enable Tx DMA Request */
+ hspi->Instance->CR2 |= SPI_CR2_TXDMAEN;
+
+ /* 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 DMA
+ * @param hspi: SPI handle
+ * @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)
+ {
+ __HAL_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_ENABLED)
+ {
+ __HAL_SPI_RESET_CRC(hspi);
+ }
+
+ /* 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);
+
+ /* Enable Rx DMA Request */
+ hspi->Instance->CR2 |= SPI_CR2_RXDMAEN;
+
+ /* 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 and Receive an amount of data in no-blocking mode with DMA
+ * @param hspi: SPI handle
+ * @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) || (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->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_ENABLED)
+ {
+ __HAL_SPI_RESET_CRC(hspi);
+ }
+
+ /* Set the SPI Rx DMA transfer complete callback because the last generated transfer request is
+ the reception request (RXNE) */
+ 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;
+
+ /* 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);
+
+ /* Enable Tx DMA Request */
+ hspi->Instance->CR2 |= SPI_CR2_TXDMAEN;
+
+ /* 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 This function handles SPI interrupt request.
+ * @param hspi: SPI handle
+ * @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 Tramitter ---------------------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ hspi->TxISR(hspi);
+ return;
+ }
+
+ if(__HAL_SPI_GET_IT_SOURCE(hspi, SPI_IT_ERR) != RESET)
+ {
+ /* SPI CRC error interrupt occured ---------------------------------------*/
+ 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 occured --------------------------------*/
+ 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 occured -----------------------------------*/
+ 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 occured -------------------------------------*/
+ 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: SPI handle
+ * @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 implenetd in the user file
+ */
+}
+
+/**
+ * @brief Rx Transfer completed callbacks
+ * @param hspi: SPI handle
+ * @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 implenetd in the user file
+ */
+}
+
+/**
+ * @brief Tx and Rx Transfer completed callbacks
+ * @param hspi: SPI handle
+ * @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 implenetd in the user file
+ */
+}
+
+/**
+ * @brief SPI error callbacks
+ * @param hspi: SPI handle
+ * @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 implenetd 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 occured.
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup SPI_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 : SPI handle
+ * @retval SPI state
+ */
+HAL_SPI_StateTypeDef HAL_SPI_GetState(SPI_HandleTypeDef *hspi)
+{
+ return hspi->State;
+}
+
+/**
+ * @brief Return the SPI error code
+ * @param hspi : SPI handle
+ * @retval SPI Error Code
+ */
+HAL_SPI_ErrorTypeDef HAL_SPI_GetError(SPI_HandleTypeDef *hspi)
+{
+ return hspi->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+ /**
+ * @brief Interrupt Handler to close Tx transfer
+ * @param hspi: SPI handle
+ * @retval void
+ */
+static void SPI_TxCloseIRQHandler(SPI_HandleTypeDef *hspi)
+{
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ /* 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 OVERUN flag in 2 Lines communication mode because received is not read */
+ if(hspi->Init.Direction == SPI_DIRECTION_2LINES)
+ {
+ __HAL_SPI_CLEAR_OVRFLAG(hspi);
+ }
+
+ /* Set state to READY before run the Callback Complete */
+ hspi->State = HAL_SPI_STATE_READY;
+
+ /* 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)
+ {
+ HAL_SPI_TxRxCpltCallback(hspi);
+ }
+ else
+ {
+ HAL_SPI_TxRxCpltCallback(hspi);
+ }
+ }
+ else
+ {
+ /* 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: SPI handle
+ * @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_ENABLED)
+ {
+ /* 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: SPI handle
+ * @retval void
+ */
+static void SPI_RxClose_IRQHandler(SPI_HandleTypeDef *hspi)
+{
+ __IO uint16_t tmpreg;
+
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ /* 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;
+
+ /* 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 */
+ __HAL_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);
+ }
+
+ /* Set state to READY before run the Callback Complete */
+ hspi->State = HAL_SPI_STATE_READY;
+ /* 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)
+ {
+ HAL_SPI_TxRxCpltCallback(hspi);
+ }else
+ {
+ HAL_SPI_RxCpltCallback(hspi);
+ }
+ }
+ else
+ {
+ /* 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: SPI handle
+ * @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_RxClose_IRQHandler(hspi);
+ }
+}
+
+/**
+ * @brief Interrupt Handler to receive amount of data in no-blocking mode
+ * @param hspi: SPI handle
+ * @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_ENABLED))
+ {
+ /* Set CRC Next to calculate CRC on Rx side */
+ hspi->Instance->CR1 |= SPI_CR1_CRCNEXT;
+ }
+
+ if(hspi->RxXferCount == 0)
+ {
+ SPI_RxClose_IRQHandler(hspi);
+ }
+}
+
+/**
+ * @brief DMA SPI transmit process complete callback
+ * @param hdma : DMA handle
+ * @retval None
+ */
+static void SPI_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* 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 OVERUN 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 : DMA handle
+ * @retval None
+ */
+static void SPI_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ __IO uint16_t tmpreg;
+
+ SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ 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);
+
+ /* Reset CRC Calculation */
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ /* 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;
+
+ /* 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;
+ }
+ }
+
+ hspi->RxXferCount = 0;
+ hspi->State = HAL_SPI_STATE_READY;
+
+ /* 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);
+ }
+
+ /* Check if Errors has been detected during transfer */
+ if(hspi->ErrorCode != HAL_SPI_ERROR_NONE)
+ {
+ HAL_SPI_ErrorCallback(hspi);
+ }
+ else
+ {
+ HAL_SPI_RxCpltCallback(hspi);
+ }
+}
+
+/**
+ * @brief DMA SPI transmit receive process complete callback
+ * @param hdma : DMA handle
+ * @retval None
+ */
+static void SPI_DMATransmitReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ __IO uint16_t tmpreg;
+
+ SPI_HandleTypeDef* hspi = ( SPI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ /* Reset CRC Calculation */
+ if(hspi->Init.CRCCalculation == SPI_CRCCALCULATION_ENABLED)
+ {
+ /* 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;
+ }
+
+ /* 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;
+
+ hspi->State = HAL_SPI_STATE_READY;
+
+ /* 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);
+ }
+
+ /* Check if Errors has been detected during transfer */
+ if(hspi->ErrorCode != HAL_SPI_ERROR_NONE)
+ {
+ HAL_SPI_ErrorCallback(hspi);
+ }
+ else
+ {
+ HAL_SPI_TxRxCpltCallback(hspi);
+ }
+}
+
+/**
+ * @brief DMA SPI communication error callback
+ * @param hdma : DMA handle
+ * @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: SPI handle
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef SPI_WaitOnFlagUntilTimeout(SPI_HandleTypeDef *hspi, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
+{
+ uint32_t timeout = 0;
+
+ timeout = HAL_GetTick() + Timeout;
+
+ /* Wait until flag is set */
+ if(Status == RESET)
+ {
+ while(__HAL_SPI_GET_FLAG(hspi, Flag) == RESET)
+ {
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if(HAL_GetTick() >= 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_ENABLED)
+ {
+ __HAL_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(HAL_GetTick() >= 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_ENABLED)
+ {
+ __HAL_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****/