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Diffstat (limited to 'bsps/arm/stm32h7/hal/stm32h7xx_hal_spi_ex.c')
| -rw-r--r-- | bsps/arm/stm32h7/hal/stm32h7xx_hal_spi_ex.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_hal_spi_ex.c b/bsps/arm/stm32h7/hal/stm32h7xx_hal_spi_ex.c new file mode 100644 index 0000000000..5549d0b590 --- /dev/null +++ b/bsps/arm/stm32h7/hal/stm32h7xx_hal_spi_ex.c @@ -0,0 +1,229 @@ +/**
+ ******************************************************************************
+ * @file stm32h7xx_hal_spi_ex.c
+ * @author MCD Application Team
+ * @brief Extended SPI HAL module driver.
+ * This file provides firmware functions to manage the following
+ * SPI peripheral extended functionalities :
+ * + IO operation functions
+ * + Peripheral Control functions
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_hal.h"
+
+/** @addtogroup STM32H7xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup SPIEx SPIEx
+ * @brief SPI Extended HAL module driver
+ * @{
+ */
+#ifdef HAL_SPI_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private defines -----------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup SPIEx_Exported_Functions SPIEx Exported Functions
+ * @{
+ */
+
+/** @defgroup SPIEx_Exported_Functions_Group1 IO operation functions
+ * @brief Data transfers functions
+ *
+@verbatim
+ ==============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of extended functions to manage the SPI
+ data transfers.
+
+ (#) SPIEx function:
+ (++) HAL_SPIEx_FlushRxFifo()
+ (++) HAL_SPIEx_FlushRxFifo()
+ (++) HAL_SPIEx_EnableLockConfiguration()
+ (++) HAL_SPIEx_ConfigureUnderrun()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Flush the RX fifo.
+ * @param hspi: pointer to a SPI_HandleTypeDef structure that contains
+ * the configuration information for the specified SPI module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_SPIEx_FlushRxFifo(SPI_HandleTypeDef *hspi)
+{
+ uint8_t count = 0;
+ uint32_t itflag = hspi->Instance->SR;
+ __IO uint32_t tmpreg;
+
+ while (((hspi->Instance->SR & SPI_FLAG_FRLVL) != SPI_RX_FIFO_0PACKET) || ((itflag & SPI_FLAG_RXWNE) != 0UL))
+ {
+ count += (uint8_t)4UL;
+ tmpreg = hspi->Instance->RXDR;
+ UNUSED(tmpreg); /* To avoid GCC warning */
+
+ if (IS_SPI_HIGHEND_INSTANCE(hspi->Instance))
+ {
+ if (count > SPI_HIGHEND_FIFO_SIZE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ else
+ {
+ if (count > SPI_LOWEND_FIFO_SIZE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Enable the Lock for the AF configuration of associated IOs
+ * and write protect the Content of Configuration register 2
+ * when SPI is enabled
+ * @param hspi: pointer to a SPI_HandleTypeDef structure that contains
+ * the configuration information for SPI module.
+ * @retval None
+ */
+HAL_StatusTypeDef HAL_SPIEx_EnableLockConfiguration(SPI_HandleTypeDef *hspi)
+{
+ HAL_StatusTypeDef errorcode = HAL_OK;
+
+ /* Process Locked */
+ __HAL_LOCK(hspi);
+
+ if (hspi->State != HAL_SPI_STATE_READY)
+ {
+ errorcode = HAL_BUSY;
+ hspi->State = HAL_SPI_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(hspi);
+ return errorcode;
+ }
+
+ /* Check if the SPI is disabled to edit IOLOCK bit */
+ if ((hspi->Instance->CR1 & SPI_CR1_SPE) != SPI_CR1_SPE)
+ {
+ SET_BIT(hspi->Instance->CR1, SPI_CR1_IOLOCK);
+ }
+ else
+ {
+ /* Disable SPI peripheral */
+ __HAL_SPI_DISABLE(hspi);
+
+ SET_BIT(hspi->Instance->CR1, SPI_CR1_IOLOCK);
+
+ /* Enable SPI peripheral */
+ __HAL_SPI_ENABLE(hspi);
+ }
+
+ hspi->State = HAL_SPI_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(hspi);
+ return errorcode;
+}
+
+/**
+ * @brief Configure the UNDERRUN condition and behavior of slave transmitter.
+ * @param hspi: pointer to a SPI_HandleTypeDef structure that contains
+ * the configuration information for SPI module.
+ * @param UnderrunDetection : Detection of underrun condition at slave transmitter
+ * This parameter can be a value of @ref SPI_Underrun_Detection.
+ * @param UnderrunBehaviour : Behavior of slave transmitter at underrun condition
+ * This parameter can be a value of @ref SPI_Underrun_Behaviour.
+ * @retval None
+ */
+HAL_StatusTypeDef HAL_SPIEx_ConfigureUnderrun(SPI_HandleTypeDef *hspi, uint32_t UnderrunDetection, uint32_t UnderrunBehaviour)
+{
+ HAL_StatusTypeDef errorcode = HAL_OK;
+
+ /* Process Locked */
+ __HAL_LOCK(hspi);
+
+ /* Check State and Insure that Underrun configuration is managed only by Salve */
+ if ((hspi->State != HAL_SPI_STATE_READY) || (hspi->Init.Mode != SPI_MODE_SLAVE))
+ {
+ errorcode = HAL_BUSY;
+ hspi->State = HAL_SPI_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(hspi);
+ return errorcode;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_SPI_UNDERRUN_DETECTION(UnderrunDetection));
+ assert_param(IS_SPI_UNDERRUN_BEHAVIOUR(UnderrunBehaviour));
+
+ /* Check if the SPI is disabled to edit CFG1 register */
+ if ((hspi->Instance->CR1 & SPI_CR1_SPE) != SPI_CR1_SPE)
+ {
+ /* Configure Underrun fields */
+ MODIFY_REG(hspi->Instance->CFG1, SPI_CFG1_UDRDET, UnderrunDetection);
+ MODIFY_REG(hspi->Instance->CFG1, SPI_CFG1_UDRCFG, UnderrunBehaviour);
+ }
+ else
+ {
+ /* Disable SPI peripheral */
+ __HAL_SPI_DISABLE(hspi);
+
+ /* Configure Underrun fields */
+ MODIFY_REG(hspi->Instance->CFG1, SPI_CFG1_UDRDET, UnderrunDetection);
+ MODIFY_REG(hspi->Instance->CFG1, SPI_CFG1_UDRCFG, UnderrunBehaviour);
+
+ /* Enable SPI peripheral */
+ __HAL_SPI_ENABLE(hspi);
+ }
+
+
+ hspi->State = HAL_SPI_STATE_READY;
+ /* Process Unlocked */
+ __HAL_UNLOCK(hspi);
+ return errorcode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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