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-rw-r--r--bsps/arm/stm32h7/hal/stm32h7xx_hal_usart_ex.c1079
1 files changed, 541 insertions, 538 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_hal_usart_ex.c b/bsps/arm/stm32h7/hal/stm32h7xx_hal_usart_ex.c
index 3d618e90ad..fbefb39ed7 100644
--- a/bsps/arm/stm32h7/hal/stm32h7xx_hal_usart_ex.c
+++ b/bsps/arm/stm32h7/hal/stm32h7xx_hal_usart_ex.c
@@ -1,544 +1,547 @@
-/**
- ******************************************************************************
- * @file stm32h7xx_hal_usart_ex.c
- * @author MCD Application Team
- * @brief Extended USART HAL module driver.
- * This file provides firmware functions to manage the following extended
- * functionalities of the Universal Synchronous Receiver Transmitter Peripheral (USART).
- * + Peripheral Control functions
- *
- *
- @verbatim
- ==============================================================================
- ##### USART peripheral extended features #####
- ==============================================================================
-
- (#) FIFO mode enabling/disabling and RX/TX FIFO threshold programming.
-
- -@- When USART operates in FIFO mode, FIFO mode must be enabled prior
- starting RX/TX transfers. Also RX/TX FIFO thresholds must be
- configured prior starting RX/TX transfers.
-
- (#) Slave mode enabling/disabling and NSS pin configuration.
-
- -@- When USART operates in Slave mode, Slave mode must be enabled prior
- starting RX/TX transfers.
-
- @endverbatim
- ******************************************************************************
- * @attention
- *
- * <h2><center>&copy; 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 USARTEx USARTEx
+/**
+ ******************************************************************************
+ * @file stm32h7xx_hal_usart_ex.c
+ * @author MCD Application Team
+ * @brief Extended USART HAL module driver.
+ * This file provides firmware functions to manage the following extended
+ * functionalities of the Universal Synchronous Receiver Transmitter Peripheral (USART).
+ * + Peripheral Control functions
+ *
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ @verbatim
+ ==============================================================================
+ ##### USART peripheral extended features #####
+ ==============================================================================
+
+ (#) FIFO mode enabling/disabling and RX/TX FIFO threshold programming.
+
+ -@- When USART operates in FIFO mode, FIFO mode must be enabled prior
+ starting RX/TX transfers. Also RX/TX FIFO thresholds must be
+ configured prior starting RX/TX transfers.
+
+ (#) Slave mode enabling/disabling and NSS pin configuration.
+
+ -@- When USART operates in Slave mode, Slave mode must be enabled prior
+ starting RX/TX transfers.
+
+ @endverbatim
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_hal.h"
+
+/** @addtogroup STM32H7xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup USARTEx USARTEx
* @ingroup RTEMSBSPsARMSTM32H7
- * @brief USART Extended HAL module driver
- * @{
- */
-
-#ifdef HAL_USART_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/** @defgroup USARTEx_Private_Constants USARTEx Private Constants
+ * @brief USART Extended HAL module driver
+ * @{
+ */
+
+#ifdef HAL_USART_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/** @defgroup USARTEx_Private_Constants USARTEx Private Constants
* @ingroup RTEMSBSPsARMSTM32H7
- * @{
- */
-/* USART RX FIFO depth */
-#define RX_FIFO_DEPTH 8U
-
-/* USART TX FIFO depth */
-#define TX_FIFO_DEPTH 8U
-/**
- * @}
- */
-
-/* Private define ------------------------------------------------------------*/
-/* Private macros ------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/** @defgroup USARTEx_Private_Functions USARTEx Private Functions
+ * @{
+ */
+/* USART RX FIFO depth */
+#define RX_FIFO_DEPTH 16U
+
+/* USART TX FIFO depth */
+#define TX_FIFO_DEPTH 16U
+/**
+ * @}
+ */
+
+/* Private define ------------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup USARTEx_Private_Functions USARTEx Private Functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @{
- */
-static void USARTEx_SetNbDataToProcess(USART_HandleTypeDef *husart);
-/**
- * @}
- */
-
-/* Exported functions --------------------------------------------------------*/
-
-/** @defgroup USARTEx_Exported_Functions USARTEx Exported Functions
+ * @{
+ */
+static void USARTEx_SetNbDataToProcess(USART_HandleTypeDef *husart);
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup USARTEx_Exported_Functions USARTEx Exported Functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @{
- */
-
-/** @defgroup USARTEx_Exported_Functions_Group1 IO operation functions
+ * @{
+ */
+
+/** @defgroup USARTEx_Exported_Functions_Group1 IO operation functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @brief Extended USART Transmit/Receive functions
- *
-@verbatim
- ===============================================================================
- ##### IO operation functions #####
- ===============================================================================
- This subsection provides a set of FIFO mode related callback functions.
-
- (#) TX/RX Fifos Callbacks:
- (+) HAL_USARTEx_RxFifoFullCallback()
- (+) HAL_USARTEx_TxFifoEmptyCallback()
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief USART RX Fifo full callback.
- * @param husart USART handle.
- * @retval None
- */
-__weak void HAL_USARTEx_RxFifoFullCallback(USART_HandleTypeDef *husart)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(husart);
-
- /* NOTE : This function should not be modified, when the callback is needed,
- the HAL_USARTEx_RxFifoFullCallback can be implemented in the user file.
- */
-}
-
-/**
- * @brief USART TX Fifo empty callback.
- * @param husart USART handle.
- * @retval None
- */
-__weak void HAL_USARTEx_TxFifoEmptyCallback(USART_HandleTypeDef *husart)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(husart);
-
- /* NOTE : This function should not be modified, when the callback is needed,
- the HAL_USARTEx_TxFifoEmptyCallback can be implemented in the user file.
- */
-}
-
-/**
- * @}
- */
-
-/** @defgroup USARTEx_Exported_Functions_Group2 Peripheral Control functions
+ * @brief Extended USART Transmit/Receive functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ This subsection provides a set of FIFO mode related callback functions.
+
+ (#) TX/RX Fifos Callbacks:
+ (+) HAL_USARTEx_RxFifoFullCallback()
+ (+) HAL_USARTEx_TxFifoEmptyCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief USART RX Fifo full callback.
+ * @param husart USART handle.
+ * @retval None
+ */
+__weak void HAL_USARTEx_RxFifoFullCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_USARTEx_RxFifoFullCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @brief USART TX Fifo empty callback.
+ * @param husart USART handle.
+ * @retval None
+ */
+__weak void HAL_USARTEx_TxFifoEmptyCallback(USART_HandleTypeDef *husart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(husart);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_USARTEx_TxFifoEmptyCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup USARTEx_Exported_Functions_Group2 Peripheral Control functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @brief Extended Peripheral Control functions
- *
-@verbatim
- ===============================================================================
- ##### Peripheral Control functions #####
- ===============================================================================
- [..] This section provides the following functions:
- (+) HAL_USARTEx_EnableSPISlaveMode() API enables the SPI slave mode
- (+) HAL_USARTEx_DisableSPISlaveMode() API disables the SPI slave mode
- (+) HAL_USARTEx_ConfigNSS API configures the Slave Select input pin (NSS)
- (+) HAL_USARTEx_EnableFifoMode() API enables the FIFO mode
- (+) HAL_USARTEx_DisableFifoMode() API disables the FIFO mode
- (+) HAL_USARTEx_SetTxFifoThreshold() API sets the TX FIFO threshold
- (+) HAL_USARTEx_SetRxFifoThreshold() API sets the RX FIFO threshold
-
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Enable the SPI slave mode.
- * @note When the USART operates in SPI slave mode, it handles data flow using
- * the serial interface clock derived from the external SCLK signal
- * provided by the external master SPI device.
- * @note In SPI slave mode, the USART must be enabled before starting the master
- * communications (or between frames while the clock is stable). Otherwise,
- * if the USART slave is enabled while the master is in the middle of a
- * frame, it will become desynchronized with the master.
- * @note The data register of the slave needs to be ready before the first edge
- * of the communication clock or before the end of the ongoing communication,
- * otherwise the SPI slave will transmit zeros.
- * @param husart USART handle.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_USARTEx_EnableSlaveMode(USART_HandleTypeDef *husart)
-{
- uint32_t tmpcr1;
-
- /* Check parameters */
- assert_param(IS_UART_SPI_SLAVE_INSTANCE(husart->Instance));
-
- /* Process Locked */
- __HAL_LOCK(husart);
-
- husart->State = HAL_USART_STATE_BUSY;
-
- /* Save actual USART configuration */
- tmpcr1 = READ_REG(husart->Instance->CR1);
-
- /* Disable USART */
- __HAL_USART_DISABLE(husart);
-
- /* In SPI slave mode mode, the following bits must be kept cleared:
- - LINEN and CLKEN bit in the USART_CR2 register
- - HDSEL, SCEN and IREN bits in the USART_CR3 register.*/
- CLEAR_BIT(husart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
- CLEAR_BIT(husart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
-
- /* Enable SPI slave mode */
- SET_BIT(husart->Instance->CR2, USART_CR2_SLVEN);
-
- /* Restore USART configuration */
- WRITE_REG(husart->Instance->CR1, tmpcr1);
-
- husart->SlaveMode = USART_SLAVEMODE_ENABLE;
-
- husart->State = HAL_USART_STATE_READY;
-
- /* Enable USART */
- __HAL_USART_ENABLE(husart);
-
- /* Process Unlocked */
- __HAL_UNLOCK(husart);
-
- return HAL_OK;
-}
-
-/**
- * @brief Disable the SPI slave mode.
- * @param husart USART handle.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_USARTEx_DisableSlaveMode(USART_HandleTypeDef *husart)
-{
- uint32_t tmpcr1;
-
- /* Check parameters */
- assert_param(IS_UART_SPI_SLAVE_INSTANCE(husart->Instance));
-
- /* Process Locked */
- __HAL_LOCK(husart);
-
- husart->State = HAL_USART_STATE_BUSY;
-
- /* Save actual USART configuration */
- tmpcr1 = READ_REG(husart->Instance->CR1);
-
- /* Disable USART */
- __HAL_USART_DISABLE(husart);
-
- /* Disable SPI slave mode */
- CLEAR_BIT(husart->Instance->CR2, USART_CR2_SLVEN);
-
- /* Restore USART configuration */
- WRITE_REG(husart->Instance->CR1, tmpcr1);
-
- husart->SlaveMode = USART_SLAVEMODE_DISABLE;
-
- husart->State = HAL_USART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(husart);
-
- return HAL_OK;
-}
-
-/**
- * @brief Configure the Slave Select input pin (NSS).
- * @note Software NSS management: SPI slave will always be selected and NSS
- * input pin will be ignored.
- * @note Hardware NSS management: the SPI slave selection depends on NSS
- * input pin. The slave is selected when NSS is low and deselected when
- * NSS is high.
- * @param husart USART handle.
- * @param NSSConfig NSS configuration.
- * This parameter can be one of the following values:
- * @arg @ref USART_NSS_HARD
- * @arg @ref USART_NSS_SOFT
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_USARTEx_ConfigNSS(USART_HandleTypeDef *husart, uint32_t NSSConfig)
-{
- uint32_t tmpcr1;
-
- /* Check parameters */
- assert_param(IS_UART_SPI_SLAVE_INSTANCE(husart->Instance));
- assert_param(IS_USART_NSS(NSSConfig));
-
- /* Process Locked */
- __HAL_LOCK(husart);
-
- husart->State = HAL_USART_STATE_BUSY;
-
- /* Save actual USART configuration */
- tmpcr1 = READ_REG(husart->Instance->CR1);
-
- /* Disable USART */
- __HAL_USART_DISABLE(husart);
-
- /* Program DIS_NSS bit in the USART_CR2 register */
- MODIFY_REG(husart->Instance->CR2, USART_CR2_DIS_NSS, NSSConfig);
-
- /* Restore USART configuration */
- WRITE_REG(husart->Instance->CR1, tmpcr1);
-
- husart->State = HAL_USART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(husart);
-
- return HAL_OK;
-}
-
-/**
- * @brief Enable the FIFO mode.
- * @param husart USART handle.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_USARTEx_EnableFifoMode(USART_HandleTypeDef *husart)
-{
- uint32_t tmpcr1;
-
- /* Check parameters */
- assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
-
- /* Process Locked */
- __HAL_LOCK(husart);
-
- husart->State = HAL_USART_STATE_BUSY;
-
- /* Save actual USART configuration */
- tmpcr1 = READ_REG(husart->Instance->CR1);
-
- /* Disable USART */
- __HAL_USART_DISABLE(husart);
-
- /* Enable FIFO mode */
- SET_BIT(tmpcr1, USART_CR1_FIFOEN);
- husart->FifoMode = USART_FIFOMODE_ENABLE;
-
- /* Restore USART configuration */
- WRITE_REG(husart->Instance->CR1, tmpcr1);
-
- /* Determine the number of data to process during RX/TX ISR execution */
- USARTEx_SetNbDataToProcess(husart);
-
- husart->State = HAL_USART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(husart);
-
- return HAL_OK;
-}
-
-/**
- * @brief Disable the FIFO mode.
- * @param husart USART handle.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_USARTEx_DisableFifoMode(USART_HandleTypeDef *husart)
-{
- uint32_t tmpcr1;
-
- /* Check parameters */
- assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
-
- /* Process Locked */
- __HAL_LOCK(husart);
-
- husart->State = HAL_USART_STATE_BUSY;
-
- /* Save actual USART configuration */
- tmpcr1 = READ_REG(husart->Instance->CR1);
-
- /* Disable USART */
- __HAL_USART_DISABLE(husart);
-
- /* Enable FIFO mode */
- CLEAR_BIT(tmpcr1, USART_CR1_FIFOEN);
- husart->FifoMode = USART_FIFOMODE_DISABLE;
-
- /* Restore USART configuration */
- WRITE_REG(husart->Instance->CR1, tmpcr1);
-
- husart->State = HAL_USART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(husart);
-
- return HAL_OK;
-}
-
-/**
- * @brief Set the TXFIFO threshold.
- * @param husart USART handle.
- * @param Threshold TX FIFO threshold value
- * This parameter can be one of the following values:
- * @arg @ref USART_TXFIFO_THRESHOLD_1_8
- * @arg @ref USART_TXFIFO_THRESHOLD_1_4
- * @arg @ref USART_TXFIFO_THRESHOLD_1_2
- * @arg @ref USART_TXFIFO_THRESHOLD_3_4
- * @arg @ref USART_TXFIFO_THRESHOLD_7_8
- * @arg @ref USART_TXFIFO_THRESHOLD_8_8
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_USARTEx_SetTxFifoThreshold(USART_HandleTypeDef *husart, uint32_t Threshold)
-{
- uint32_t tmpcr1;
-
- /* Check parameters */
- assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
- assert_param(IS_USART_TXFIFO_THRESHOLD(Threshold));
-
- /* Process Locked */
- __HAL_LOCK(husart);
-
- husart->State = HAL_USART_STATE_BUSY;
-
- /* Save actual USART configuration */
- tmpcr1 = READ_REG(husart->Instance->CR1);
-
- /* Disable USART */
- __HAL_USART_DISABLE(husart);
-
- /* Update TX threshold configuration */
- MODIFY_REG(husart->Instance->CR3, USART_CR3_TXFTCFG, Threshold);
-
- /* Determine the number of data to process during RX/TX ISR execution */
- USARTEx_SetNbDataToProcess(husart);
-
- /* Restore USART configuration */
- WRITE_REG(husart->Instance->CR1, tmpcr1);
-
- husart->State = HAL_USART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(husart);
-
- return HAL_OK;
-}
-
-/**
- * @brief Set the RXFIFO threshold.
- * @param husart USART handle.
- * @param Threshold RX FIFO threshold value
- * This parameter can be one of the following values:
- * @arg @ref USART_RXFIFO_THRESHOLD_1_8
- * @arg @ref USART_RXFIFO_THRESHOLD_1_4
- * @arg @ref USART_RXFIFO_THRESHOLD_1_2
- * @arg @ref USART_RXFIFO_THRESHOLD_3_4
- * @arg @ref USART_RXFIFO_THRESHOLD_7_8
- * @arg @ref USART_RXFIFO_THRESHOLD_8_8
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_USARTEx_SetRxFifoThreshold(USART_HandleTypeDef *husart, uint32_t Threshold)
-{
- uint32_t tmpcr1;
-
- /* Check the parameters */
- assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
- assert_param(IS_USART_RXFIFO_THRESHOLD(Threshold));
-
- /* Process Locked */
- __HAL_LOCK(husart);
-
- husart->State = HAL_USART_STATE_BUSY;
-
- /* Save actual USART configuration */
- tmpcr1 = READ_REG(husart->Instance->CR1);
-
- /* Disable USART */
- __HAL_USART_DISABLE(husart);
-
- /* Update RX threshold configuration */
- MODIFY_REG(husart->Instance->CR3, USART_CR3_RXFTCFG, Threshold);
-
- /* Determine the number of data to process during RX/TX ISR execution */
- USARTEx_SetNbDataToProcess(husart);
-
- /* Restore USART configuration */
- WRITE_REG(husart->Instance->CR1, tmpcr1);
-
- husart->State = HAL_USART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(husart);
-
- return HAL_OK;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/** @addtogroup USARTEx_Private_Functions
- * @{
- */
-
-/**
- * @brief Calculate the number of data to process in RX/TX ISR.
- * @note The RX FIFO depth and the TX FIFO depth is extracted from
- * the USART configuration registers.
- * @param husart USART handle.
- * @retval None
- */
-static void USARTEx_SetNbDataToProcess(USART_HandleTypeDef *husart)
-{
- uint8_t rx_fifo_depth;
- uint8_t tx_fifo_depth;
- uint8_t rx_fifo_threshold;
- uint8_t tx_fifo_threshold;
- /* 2 0U/1U added for MISRAC2012-Rule-18.1_b and MISRAC2012-Rule-18.1_d */
- uint8_t numerator[] = {1U, 1U, 1U, 3U, 7U, 1U, 0U, 0U};
- uint8_t denominator[] = {8U, 4U, 2U, 4U, 8U, 1U, 1U, 1U};
-
- if (husart->FifoMode == USART_FIFOMODE_DISABLE)
- {
- husart->NbTxDataToProcess = 1U;
- husart->NbRxDataToProcess = 1U;
- }
- else
- {
- rx_fifo_depth = RX_FIFO_DEPTH;
- tx_fifo_depth = TX_FIFO_DEPTH;
- rx_fifo_threshold = (uint8_t)((READ_BIT(husart->Instance->CR3, USART_CR3_RXFTCFG) >> USART_CR3_RXFTCFG_Pos) & 0xFFU);
- tx_fifo_threshold = (uint8_t)((READ_BIT(husart->Instance->CR3, USART_CR3_TXFTCFG) >> USART_CR3_TXFTCFG_Pos) & 0xFFU);
- husart->NbTxDataToProcess = ((uint16_t)tx_fifo_depth * numerator[tx_fifo_threshold]) / (uint16_t)denominator[tx_fifo_threshold];
- husart->NbRxDataToProcess = ((uint16_t)rx_fifo_depth * numerator[rx_fifo_threshold]) / (uint16_t)denominator[rx_fifo_threshold];
- }
-}
-/**
- * @}
- */
-
-#endif /* HAL_USART_MODULE_ENABLED */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+ * @brief Extended Peripheral Control functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Control functions #####
+ ===============================================================================
+ [..] This section provides the following functions:
+ (+) HAL_USARTEx_EnableSPISlaveMode() API enables the SPI slave mode
+ (+) HAL_USARTEx_DisableSPISlaveMode() API disables the SPI slave mode
+ (+) HAL_USARTEx_ConfigNSS API configures the Slave Select input pin (NSS)
+ (+) HAL_USARTEx_EnableFifoMode() API enables the FIFO mode
+ (+) HAL_USARTEx_DisableFifoMode() API disables the FIFO mode
+ (+) HAL_USARTEx_SetTxFifoThreshold() API sets the TX FIFO threshold
+ (+) HAL_USARTEx_SetRxFifoThreshold() API sets the RX FIFO threshold
+
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Enable the SPI slave mode.
+ * @note When the USART operates in SPI slave mode, it handles data flow using
+ * the serial interface clock derived from the external SCLK signal
+ * provided by the external master SPI device.
+ * @note In SPI slave mode, the USART must be enabled before starting the master
+ * communications (or between frames while the clock is stable). Otherwise,
+ * if the USART slave is enabled while the master is in the middle of a
+ * frame, it will become desynchronized with the master.
+ * @note The data register of the slave needs to be ready before the first edge
+ * of the communication clock or before the end of the ongoing communication,
+ * otherwise the SPI slave will transmit zeros.
+ * @param husart USART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USARTEx_EnableSlaveMode(USART_HandleTypeDef *husart)
+{
+ uint32_t tmpcr1;
+
+ /* Check parameters */
+ assert_param(IS_UART_SPI_SLAVE_INSTANCE(husart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Save actual USART configuration */
+ tmpcr1 = READ_REG(husart->Instance->CR1);
+
+ /* Disable USART */
+ __HAL_USART_DISABLE(husart);
+
+ /* In SPI slave mode mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bit in the USART_CR2 register
+ - HDSEL, SCEN and IREN bits in the USART_CR3 register.*/
+ CLEAR_BIT(husart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
+ CLEAR_BIT(husart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
+
+ /* Enable SPI slave mode */
+ SET_BIT(husart->Instance->CR2, USART_CR2_SLVEN);
+
+ /* Restore USART configuration */
+ WRITE_REG(husart->Instance->CR1, tmpcr1);
+
+ husart->SlaveMode = USART_SLAVEMODE_ENABLE;
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Enable USART */
+ __HAL_USART_ENABLE(husart);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Disable the SPI slave mode.
+ * @param husart USART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USARTEx_DisableSlaveMode(USART_HandleTypeDef *husart)
+{
+ uint32_t tmpcr1;
+
+ /* Check parameters */
+ assert_param(IS_UART_SPI_SLAVE_INSTANCE(husart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Save actual USART configuration */
+ tmpcr1 = READ_REG(husart->Instance->CR1);
+
+ /* Disable USART */
+ __HAL_USART_DISABLE(husart);
+
+ /* Disable SPI slave mode */
+ CLEAR_BIT(husart->Instance->CR2, USART_CR2_SLVEN);
+
+ /* Restore USART configuration */
+ WRITE_REG(husart->Instance->CR1, tmpcr1);
+
+ husart->SlaveMode = USART_SLAVEMODE_DISABLE;
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Configure the Slave Select input pin (NSS).
+ * @note Software NSS management: SPI slave will always be selected and NSS
+ * input pin will be ignored.
+ * @note Hardware NSS management: the SPI slave selection depends on NSS
+ * input pin. The slave is selected when NSS is low and deselected when
+ * NSS is high.
+ * @param husart USART handle.
+ * @param NSSConfig NSS configuration.
+ * This parameter can be one of the following values:
+ * @arg @ref USART_NSS_HARD
+ * @arg @ref USART_NSS_SOFT
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USARTEx_ConfigNSS(USART_HandleTypeDef *husart, uint32_t NSSConfig)
+{
+ uint32_t tmpcr1;
+
+ /* Check parameters */
+ assert_param(IS_UART_SPI_SLAVE_INSTANCE(husart->Instance));
+ assert_param(IS_USART_NSS(NSSConfig));
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Save actual USART configuration */
+ tmpcr1 = READ_REG(husart->Instance->CR1);
+
+ /* Disable USART */
+ __HAL_USART_DISABLE(husart);
+
+ /* Program DIS_NSS bit in the USART_CR2 register */
+ MODIFY_REG(husart->Instance->CR2, USART_CR2_DIS_NSS, NSSConfig);
+
+ /* Restore USART configuration */
+ WRITE_REG(husart->Instance->CR1, tmpcr1);
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Enable the FIFO mode.
+ * @param husart USART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USARTEx_EnableFifoMode(USART_HandleTypeDef *husart)
+{
+ uint32_t tmpcr1;
+
+ /* Check parameters */
+ assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Save actual USART configuration */
+ tmpcr1 = READ_REG(husart->Instance->CR1);
+
+ /* Disable USART */
+ __HAL_USART_DISABLE(husart);
+
+ /* Enable FIFO mode */
+ SET_BIT(tmpcr1, USART_CR1_FIFOEN);
+ husart->FifoMode = USART_FIFOMODE_ENABLE;
+
+ /* Restore USART configuration */
+ WRITE_REG(husart->Instance->CR1, tmpcr1);
+
+ /* Determine the number of data to process during RX/TX ISR execution */
+ USARTEx_SetNbDataToProcess(husart);
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Disable the FIFO mode.
+ * @param husart USART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USARTEx_DisableFifoMode(USART_HandleTypeDef *husart)
+{
+ uint32_t tmpcr1;
+
+ /* Check parameters */
+ assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Save actual USART configuration */
+ tmpcr1 = READ_REG(husart->Instance->CR1);
+
+ /* Disable USART */
+ __HAL_USART_DISABLE(husart);
+
+ /* Enable FIFO mode */
+ CLEAR_BIT(tmpcr1, USART_CR1_FIFOEN);
+ husart->FifoMode = USART_FIFOMODE_DISABLE;
+
+ /* Restore USART configuration */
+ WRITE_REG(husart->Instance->CR1, tmpcr1);
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Set the TXFIFO threshold.
+ * @param husart USART handle.
+ * @param Threshold TX FIFO threshold value
+ * This parameter can be one of the following values:
+ * @arg @ref USART_TXFIFO_THRESHOLD_1_8
+ * @arg @ref USART_TXFIFO_THRESHOLD_1_4
+ * @arg @ref USART_TXFIFO_THRESHOLD_1_2
+ * @arg @ref USART_TXFIFO_THRESHOLD_3_4
+ * @arg @ref USART_TXFIFO_THRESHOLD_7_8
+ * @arg @ref USART_TXFIFO_THRESHOLD_8_8
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USARTEx_SetTxFifoThreshold(USART_HandleTypeDef *husart, uint32_t Threshold)
+{
+ uint32_t tmpcr1;
+
+ /* Check parameters */
+ assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
+ assert_param(IS_USART_TXFIFO_THRESHOLD(Threshold));
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Save actual USART configuration */
+ tmpcr1 = READ_REG(husart->Instance->CR1);
+
+ /* Disable USART */
+ __HAL_USART_DISABLE(husart);
+
+ /* Update TX threshold configuration */
+ MODIFY_REG(husart->Instance->CR3, USART_CR3_TXFTCFG, Threshold);
+
+ /* Determine the number of data to process during RX/TX ISR execution */
+ USARTEx_SetNbDataToProcess(husart);
+
+ /* Restore USART configuration */
+ WRITE_REG(husart->Instance->CR1, tmpcr1);
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Set the RXFIFO threshold.
+ * @param husart USART handle.
+ * @param Threshold RX FIFO threshold value
+ * This parameter can be one of the following values:
+ * @arg @ref USART_RXFIFO_THRESHOLD_1_8
+ * @arg @ref USART_RXFIFO_THRESHOLD_1_4
+ * @arg @ref USART_RXFIFO_THRESHOLD_1_2
+ * @arg @ref USART_RXFIFO_THRESHOLD_3_4
+ * @arg @ref USART_RXFIFO_THRESHOLD_7_8
+ * @arg @ref USART_RXFIFO_THRESHOLD_8_8
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_USARTEx_SetRxFifoThreshold(USART_HandleTypeDef *husart, uint32_t Threshold)
+{
+ uint32_t tmpcr1;
+
+ /* Check the parameters */
+ assert_param(IS_UART_FIFO_INSTANCE(husart->Instance));
+ assert_param(IS_USART_RXFIFO_THRESHOLD(Threshold));
+
+ /* Process Locked */
+ __HAL_LOCK(husart);
+
+ husart->State = HAL_USART_STATE_BUSY;
+
+ /* Save actual USART configuration */
+ tmpcr1 = READ_REG(husart->Instance->CR1);
+
+ /* Disable USART */
+ __HAL_USART_DISABLE(husart);
+
+ /* Update RX threshold configuration */
+ MODIFY_REG(husart->Instance->CR3, USART_CR3_RXFTCFG, Threshold);
+
+ /* Determine the number of data to process during RX/TX ISR execution */
+ USARTEx_SetNbDataToProcess(husart);
+
+ /* Restore USART configuration */
+ WRITE_REG(husart->Instance->CR1, tmpcr1);
+
+ husart->State = HAL_USART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(husart);
+
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup USARTEx_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Calculate the number of data to process in RX/TX ISR.
+ * @note The RX FIFO depth and the TX FIFO depth is extracted from
+ * the USART configuration registers.
+ * @param husart USART handle.
+ * @retval None
+ */
+static void USARTEx_SetNbDataToProcess(USART_HandleTypeDef *husart)
+{
+ uint8_t rx_fifo_depth;
+ uint8_t tx_fifo_depth;
+ uint8_t rx_fifo_threshold;
+ uint8_t tx_fifo_threshold;
+ /* 2 0U/1U added for MISRAC2012-Rule-18.1_b and MISRAC2012-Rule-18.1_d */
+ static const uint8_t numerator[] = {1U, 1U, 1U, 3U, 7U, 1U, 0U, 0U};
+ static const uint8_t denominator[] = {8U, 4U, 2U, 4U, 8U, 1U, 1U, 1U};
+
+ if (husart->FifoMode == USART_FIFOMODE_DISABLE)
+ {
+ husart->NbTxDataToProcess = 1U;
+ husart->NbRxDataToProcess = 1U;
+ }
+ else
+ {
+ rx_fifo_depth = RX_FIFO_DEPTH;
+ tx_fifo_depth = TX_FIFO_DEPTH;
+ rx_fifo_threshold = (uint8_t)((READ_BIT(husart->Instance->CR3,
+ USART_CR3_RXFTCFG) >> USART_CR3_RXFTCFG_Pos) & 0xFFU);
+ tx_fifo_threshold = (uint8_t)((READ_BIT(husart->Instance->CR3,
+ USART_CR3_TXFTCFG) >> USART_CR3_TXFTCFG_Pos) & 0xFFU);
+ husart->NbTxDataToProcess = ((uint16_t)tx_fifo_depth * numerator[tx_fifo_threshold]) /
+ (uint16_t)denominator[tx_fifo_threshold];
+ husart->NbRxDataToProcess = ((uint16_t)rx_fifo_depth * numerator[rx_fifo_threshold]) /
+ (uint16_t)denominator[rx_fifo_threshold];
+ }
+}
+/**
+ * @}
+ */
+
+#endif /* HAL_USART_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
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