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Diffstat (limited to 'Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_uart.c')
| -rw-r--r-- | Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_uart.c | 1932 |
1 files changed, 1932 insertions, 0 deletions
diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_uart.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_uart.c new file mode 100644 index 0000000..0ed2a7e --- /dev/null +++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_uart.c @@ -0,0 +1,1932 @@ +/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_uart.c
+ * @author MCD Application Team
+ * @version V1.3.2
+ * @date 26-June-2015
+ * @brief UART HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Universal Asynchronous Receiver Transmitter (UART) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral Control functions
+ * + Peripheral State and Errors functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ The UART HAL driver can be used as follows:
+
+ (#) Declare a UART_HandleTypeDef handle structure.
+
+ (#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
+ (##) Enable the USARTx interface clock.
+ (##) UART pins configuration:
+ (+++) Enable the clock for the UART GPIOs.
+ (+++) Configure these UART pins as alternate function pull-up.
+ (##) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
+ and HAL_UART_Receive_IT() APIs):
+ (+++) Configure the USARTx interrupt priority.
+ (+++) Enable the NVIC USART IRQ handle.
+ (##) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
+ and HAL_UART_Receive_DMA() APIs):
+ (+++) Declare a DMA handle structure for the Tx/Rx stream.
+ (+++) Enable the DMAx interface clock.
+ (+++) Configure the declared DMA handle structure with the required
+ Tx/Rx parameters.
+ (+++) Configure the DMA Tx/Rx Stream.
+ (+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
+ (+++) Configure the priority and enable the NVIC for the transfer complete
+ interrupt on the DMA Tx/Rx Stream.
+
+ (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
+ flow control and Mode(Receiver/Transmitter) in the Init structure.
+
+ (#) For the UART asynchronous mode, initialize the UART registers by calling
+ the HAL_UART_Init() API.
+
+ (#) For the UART Half duplex mode, initialize the UART registers by calling
+ the HAL_HalfDuplex_Init() API.
+
+ (#) For the LIN mode, initialize the UART registers by calling the HAL_LIN_Init() API.
+
+ (#) For the Multi-Processor mode, initialize the UART registers by calling
+ the HAL_MultiProcessor_Init() API.
+
+ [..]
+ (@) The specific UART interrupts (Transmission complete interrupt,
+ RXNE interrupt and Error Interrupts) will be managed using the macros
+ __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit
+ and receive process.
+
+ [..]
+ (@) These APIs (HAL_UART_Init() and HAL_HalfDuplex_Init()) configure also the
+ low level Hardware GPIO, CLOCK, CORTEX...etc) by calling the customized
+ HAL_UART_MspInit() API.
+
+ [..]
+ Three operation modes are available within this driver :
+
+ *** Polling mode IO operation ***
+ =================================
+ [..]
+ (+) Send an amount of data in blocking mode using HAL_UART_Transmit()
+ (+) Receive an amount of data in blocking mode using HAL_UART_Receive()
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Send an amount of data in non blocking mode using HAL_UART_Transmit_IT()
+ (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_UART_TxCpltCallback
+ (+) Receive an amount of data in non blocking mode using HAL_UART_Receive_IT()
+ (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_UART_RxCpltCallback
+ (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_UART_ErrorCallback
+
+ *** DMA mode IO operation ***
+ ==============================
+ [..]
+ (+) Send an amount of data in non blocking mode (DMA) using HAL_UART_Transmit_DMA()
+ (+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback
+ (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_UART_TxCpltCallback
+ (+) Receive an amount of data in non blocking mode (DMA) using HAL_UART_Receive_DMA()
+ (+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback
+ (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
+ add his own code by customization of function pointer HAL_UART_RxCpltCallback
+ (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer HAL_UART_ErrorCallback
+ (+) Pause the DMA Transfer using HAL_UART_DMAPause()
+ (+) Resume the DMA Transfer using HAL_UART_DMAResume()
+ (+) Stop the DMA Transfer using HAL_UART_DMAStop()
+
+ *** UART HAL driver macros list ***
+ =============================================
+ [..]
+ Below the list of most used macros in UART HAL driver.
+
+ (+) __HAL_UART_ENABLE: Enable the UART peripheral
+ (+) __HAL_UART_DISABLE: Disable the UART peripheral
+ (+) __HAL_UART_GET_FLAG : Check whether the specified UART flag is set or not
+ (+) __HAL_UART_CLEAR_FLAG : Clear the specified UART pending flag
+ (+) __HAL_UART_ENABLE_IT: Enable the specified UART interrupt
+ (+) __HAL_UART_DISABLE_IT: Disable the specified UART interrupt
+ (+) __HAL_UART_GET_IT_SOURCE: Check whether the specified UART interrupt has occurred or not
+
+ [..]
+ (@) You can refer to the UART HAL driver header file for more useful macros
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup UART UART
+ * @brief HAL UART module driver
+ * @{
+ */
+#ifdef HAL_UART_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @addtogroup UART_Private_Constants
+ * @{
+ */
+#define UART_TIMEOUT_VALUE 22000
+/**
+ * @}
+ */
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @addtogroup UART_Private_Functions UART Private Functions
+ * @{
+ */
+static void UART_SetConfig (UART_HandleTypeDef *huart);
+static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
+static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
+static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
+static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMAError(DMA_HandleTypeDef *hdma);
+static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
+/**
+ * @}
+ */
+
+/* Exported functions ---------------------------------------------------------*/
+/** @defgroup UART_Exported_Functions UART Exported Functions
+ * @{
+ */
+
+/** @defgroup UART_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+===============================================================================
+ ##### Initialization and Configuration functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
+ in asynchronous mode.
+ (+) For the asynchronous mode only these parameters can be configured:
+ (++) Baud Rate
+ (++) Word Length
+ (++) Stop Bit
+ (++) Parity: If the parity is enabled, then the MSB bit of the data written
+ in the data register is transmitted but is changed by the parity bit.
+ Depending on the frame length defined by the M bit (8-bits or 9-bits),
+ please refer to Reference manual for possible UART frame formats.
+ (++) Hardware flow control
+ (++) Receiver/transmitter modes
+ (++) Over Sampling Method
+ [..]
+ The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init() and HAL_MultiProcessor_Init() APIs
+ follow respectively the UART asynchronous, UART Half duplex, LIN and Multi-Processor
+ configuration procedures (details for the procedures are available in reference manual (RM0329)).
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the UART mode according to the specified parameters in
+ * the UART_InitTypeDef and create the associated handle.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ if(huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
+ {
+ /* The hardware flow control is available only for USART1, USART2, USART3 and USART6 */
+ assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
+ assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
+ }
+ else
+ {
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+ }
+ assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
+ assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+ /* Init the low level hardware */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ UART_SetConfig(huart);
+
+ /* In asynchronous mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
+ huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
+
+ /* Enable the peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* Initialize the UART state */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ huart->State= HAL_UART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the half-duplex mode according to the specified
+ * parameters in the UART_InitTypeDef and create the associated handle.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+ assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
+ assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+ /* Init the low level hardware */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ UART_SetConfig(huart);
+
+ /* In half-duplex mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN and IREN bits in the USART_CR3 register.*/
+ huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_SCEN);
+
+ /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
+ huart->Instance->CR3 |= USART_CR3_HDSEL;
+
+ /* Enable the peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* Initialize the UART state*/
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ huart->State= HAL_UART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the LIN mode according to the specified
+ * parameters in the UART_InitTypeDef and create the associated handle.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param BreakDetectLength: Specifies the LIN break detection length.
+ * This parameter can be one of the following values:
+ * @arg UART_LINBREAKDETECTLENGTH_10B: 10-bit break detection
+ * @arg UART_LINBREAKDETECTLENGTH_11B: 11-bit break detection
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+ assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
+ assert_param(IS_UART_LIN_WORD_LENGTH(huart->Init.WordLength));
+ assert_param(IS_UART_LIN_OVERSAMPLING(huart->Init.OverSampling));
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+ /* Init the low level hardware */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ UART_SetConfig(huart);
+
+ /* In LIN mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN and IREN bits in the USART_CR3 register.*/
+ huart->Instance->CR2 &= ~(USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN);
+
+ /* Enable the LIN mode by setting the LINEN bit in the CR2 register */
+ huart->Instance->CR2 |= USART_CR2_LINEN;
+
+ /* Set the USART LIN Break detection length. */
+ huart->Instance->CR2 &= ~(USART_CR2_LBDL);
+ huart->Instance->CR2 |= BreakDetectLength;
+
+ /* Enable the peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* Initialize the UART state*/
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ huart->State= HAL_UART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initializes the Multi-Processor mode according to the specified
+ * parameters in the UART_InitTypeDef and create the associated handle.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param Address: USART address
+ * @param WakeUpMethod: specifies the USART wake-up method.
+ * This parameter can be one of the following values:
+ * @arg UART_WAKEUPMETHOD_IDLELINE: Wake-up by an idle line detection
+ * @arg UART_WAKEUPMETHOD_ADDRESSMARK: Wake-up by an address mark
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+ assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
+ assert_param(IS_UART_ADDRESS(Address));
+ assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
+ assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
+
+ if(huart->State == HAL_UART_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+ /* Init the low level hardware */
+ HAL_UART_MspInit(huart);
+ }
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the peripheral */
+ __HAL_UART_DISABLE(huart);
+
+ /* Set the UART Communication parameters */
+ UART_SetConfig(huart);
+
+ /* In Multi-Processor mode, the following bits must be kept cleared:
+ - LINEN and CLKEN bits in the USART_CR2 register,
+ - SCEN, HDSEL and IREN bits in the USART_CR3 register */
+ huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
+ huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
+
+ /* Clear the USART address */
+ huart->Instance->CR2 &= ~(USART_CR2_ADD);
+ /* Set the USART address node */
+ huart->Instance->CR2 |= Address;
+
+ /* Set the wake up method by setting the WAKE bit in the CR1 register */
+ huart->Instance->CR1 &= ~(USART_CR1_WAKE);
+ huart->Instance->CR1 |= WakeUpMethod;
+
+ /* Enable the peripheral */
+ __HAL_UART_ENABLE(huart);
+
+ /* Initialize the UART state */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ huart->State= HAL_UART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitializes the UART peripheral.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
+{
+ /* Check the UART handle allocation */
+ if(huart == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* DeInit the low level hardware */
+ HAL_UART_MspDeInit(huart);
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ huart->State = HAL_UART_STATE_RESET;
+
+ /* Process Lock */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief UART MSP Init.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+ __weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_UART_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief UART MSP DeInit.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+ __weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_UART_MspDeInit could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup UART_Exported_Functions_Group2 IO operation functions
+ * @brief UART Transmit and Receive functions
+ *
+@verbatim
+ ==============================================================================
+ ##### IO operation functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to manage the UART asynchronous
+ and Half duplex data transfers.
+
+ (#) There are two modes of transfer:
+ (++) Blocking mode: The communication is performed in polling mode.
+ The HAL status of all data processing is returned by the same function
+ after finishing transfer.
+ (++) Non blocking mode: The communication is performed using Interrupts
+ or DMA, these APIs return the HAL status.
+ The end of the data processing will be indicated through the
+ dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
+ using DMA mode.
+ The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
+ will be executed respectively at the end of the transmit or receive process.
+ The HAL_UART_ErrorCallback() user callback will be executed when
+ a communication error is detected.
+
+ (#) Blocking mode APIs are:
+ (++) HAL_UART_Transmit()
+ (++) HAL_UART_Receive()
+
+ (#) Non Blocking mode APIs with Interrupt are:
+ (++) HAL_UART_Transmit_IT()
+ (++) HAL_UART_Receive_IT()
+ (++) HAL_UART_IRQHandler()
+
+ (#) Non Blocking mode functions with DMA are:
+ (++) HAL_UART_Transmit_DMA()
+ (++) HAL_UART_Receive_DMA()
+
+ (#) A set of Transfer Complete Callbacks are provided in non blocking mode:
+ (++) HAL_UART_TxCpltCallback()
+ (++) HAL_UART_RxCpltCallback()
+ (++) HAL_UART_ErrorCallback()
+
+ [..]
+ (@) In the Half duplex communication, it is forbidden to run the transmit
+ and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX
+ can't be useful.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Sends an amount of data in blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint16_t* tmp;
+ uint32_t tmp1 = 0;
+
+ tmp1 = huart->State;
+ if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_RX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a non-blocking receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+
+ huart->TxXferSize = Size;
+ huart->TxXferCount = Size;
+ while(huart->TxXferCount > 0)
+ {
+ huart->TxXferCount--;
+ if(huart->Init.WordLength == UART_WORDLENGTH_9B)
+ {
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ tmp = (uint16_t*) pData;
+ huart->Instance->DR = (*tmp & (uint16_t)0x01FF);
+ if(huart->Init.Parity == UART_PARITY_NONE)
+ {
+ pData +=2;
+ }
+ else
+ {
+ pData +=1;
+ }
+ }
+ else
+ {
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ huart->Instance->DR = (*pData++ & (uint8_t)0xFF);
+ }
+ }
+
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+
+ /* Check if a non-blocking receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receives an amount of data in blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be received
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint16_t* tmp;
+ uint32_t tmp1 = 0;
+
+ tmp1 = huart->State;
+ if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_TX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a non-blocking transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+
+ huart->RxXferSize = Size;
+ huart->RxXferCount = Size;
+
+ /* Check the remain data to be received */
+ while(huart->RxXferCount > 0)
+ {
+ huart->RxXferCount--;
+ if(huart->Init.WordLength == UART_WORDLENGTH_9B)
+ {
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ tmp = (uint16_t*) pData ;
+ if(huart->Init.Parity == UART_PARITY_NONE)
+ {
+ *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
+ pData +=2;
+ }
+ else
+ {
+ *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x00FF);
+ pData +=1;
+ }
+
+ }
+ else
+ {
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
+ if(huart->Init.Parity == UART_PARITY_NONE)
+ {
+ *pData++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
+ }
+ else
+ {
+ *pData++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
+ }
+
+ }
+ }
+
+ /* Check if a non-blocking transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sends an amount of data in non blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ uint32_t tmp = 0;
+
+ tmp = huart->State;
+ if((tmp == HAL_UART_STATE_READY) || (tmp == HAL_UART_STATE_BUSY_RX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pTxBuffPtr = pData;
+ huart->TxXferSize = Size;
+ huart->TxXferCount = Size;
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+
+ /* Enable the UART Parity Error Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
+
+ /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ /* Enable the UART Transmit data register empty Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receives an amount of data in non blocking mode
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be received
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ uint32_t tmp = 0;
+
+ tmp = huart->State;
+ if((tmp == HAL_UART_STATE_READY) || (tmp == HAL_UART_STATE_BUSY_TX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pRxBuffPtr = pData;
+ huart->RxXferSize = Size;
+ huart->RxXferCount = Size;
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+
+ /* Enable the UART Parity Error Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
+
+ /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ /* Enable the UART Data Register not empty Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sends an amount of data in non blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ uint32_t *tmp;
+ uint32_t tmp1 = 0;
+
+ tmp1 = huart->State;
+ if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_RX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pTxBuffPtr = pData;
+ huart->TxXferSize = Size;
+ huart->TxXferCount = Size;
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+
+ /* Set the UART DMA transfer complete callback */
+ huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
+
+ /* Set the UART DMA Half transfer complete callback */
+ huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
+
+ /* Set the DMA error callback */
+ huart->hdmatx->XferErrorCallback = UART_DMAError;
+
+ /* Enable the UART transmit DMA Stream */
+ tmp = (uint32_t*)&pData;
+ HAL_DMA_Start_IT(huart->hdmatx, *(uint32_t*)tmp, (uint32_t)&huart->Instance->DR, Size);
+
+ /* Clear the TC flag in the SR register by writing 0 to it */
+ __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
+
+ /* Enable the DMA transfer for transmit request by setting the DMAT bit
+ in the UART CR3 register */
+ huart->Instance->CR3 |= USART_CR3_DMAT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receives an amount of data in non blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param pData: Pointer to data buffer
+ * @param Size: Amount of data to be received
+ * @note When the UART parity is enabled (PCE = 1) the data received contain the parity bit.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
+{
+ uint32_t *tmp;
+ uint32_t tmp1 = 0;
+
+ tmp1 = huart->State;
+ if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_TX))
+ {
+ if((pData == NULL ) || (Size == 0))
+ {
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->pRxBuffPtr = pData;
+ huart->RxXferSize = Size;
+
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ /* Check if a transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX_RX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+
+ /* Set the UART DMA transfer complete callback */
+ huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
+
+ /* Set the UART DMA Half transfer complete callback */
+ huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
+
+ /* Set the DMA error callback */
+ huart->hdmarx->XferErrorCallback = UART_DMAError;
+
+ /* Enable the DMA Stream */
+ tmp = (uint32_t*)&pData;
+ HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->DR, *(uint32_t*)tmp, Size);
+
+ /* Enable the DMA transfer for the receiver request by setting the DMAR bit
+ in the UART CR3 register */
+ huart->Instance->CR3 |= USART_CR3_DMAR;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Pauses the DMA Transfer.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ /* Disable the UART DMA Tx request */
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
+ }
+ else if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ /* Disable the UART DMA Rx request */
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
+ }
+ else if (huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ /* Disable the UART DMA Tx & Rx requests */
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
+ huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Resumes the DMA Transfer.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
+{
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ if(huart->State == HAL_UART_STATE_BUSY_TX)
+ {
+ /* Enable the UART DMA Tx request */
+ huart->Instance->CR3 |= USART_CR3_DMAT;
+ }
+ else if(huart->State == HAL_UART_STATE_BUSY_RX)
+ {
+ /* Clear the Overrun flag before resuming the Rx transfer*/
+ __HAL_UART_CLEAR_OREFLAG(huart);
+ /* Enable the UART DMA Rx request */
+ huart->Instance->CR3 |= USART_CR3_DMAR;
+ }
+ else if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ /* Clear the Overrun flag before resuming the Rx transfer*/
+ __HAL_UART_CLEAR_OREFLAG(huart);
+ /* Enable the UART DMA Tx & Rx request */
+ huart->Instance->CR3 |= USART_CR3_DMAT;
+ huart->Instance->CR3 |= USART_CR3_DMAR;
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Stops the DMA Transfer.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
+{
+ /* The Lock is not implemented on this API to allow the user application
+ to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback():
+ when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
+ and the correspond call back is executed HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback()
+ */
+
+ /* Disable the UART Tx/Rx DMA requests */
+ huart->Instance->CR3 &= ~USART_CR3_DMAT;
+ huart->Instance->CR3 &= ~USART_CR3_DMAR;
+
+ /* Abort the UART DMA tx Stream */
+ if(huart->hdmatx != NULL)
+ {
+ HAL_DMA_Abort(huart->hdmatx);
+ }
+ /* Abort the UART DMA rx Stream */
+ if(huart->hdmarx != NULL)
+ {
+ HAL_DMA_Abort(huart->hdmarx);
+ }
+
+ huart->State = HAL_UART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles UART interrupt request.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
+{
+ uint32_t tmp1 = 0, tmp2 = 0;
+
+ tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_PE);
+ tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_PE);
+ /* UART parity error interrupt occurred ------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ __HAL_UART_CLEAR_PEFLAG(huart);
+
+ huart->ErrorCode |= HAL_UART_ERROR_PE;
+ }
+
+ tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_FE);
+ tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR);
+ /* UART frame error interrupt occurred -------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ __HAL_UART_CLEAR_FEFLAG(huart);
+
+ huart->ErrorCode |= HAL_UART_ERROR_FE;
+ }
+
+ tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_NE);
+ tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR);
+ /* UART noise error interrupt occurred -------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ __HAL_UART_CLEAR_NEFLAG(huart);
+
+ huart->ErrorCode |= HAL_UART_ERROR_NE;
+ }
+
+ tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_ORE);
+ tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR);
+ /* UART Over-Run interrupt occurred ----------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ __HAL_UART_CLEAR_OREFLAG(huart);
+
+ huart->ErrorCode |= HAL_UART_ERROR_ORE;
+ }
+
+ tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE);
+ tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE);
+ /* UART in mode Receiver ---------------------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ UART_Receive_IT(huart);
+ }
+
+ tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_TXE);
+ tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE);
+ /* UART in mode Transmitter ------------------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ UART_Transmit_IT(huart);
+ }
+
+ tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_TC);
+ tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC);
+ /* UART in mode Transmitter end --------------------------------------------*/
+ if((tmp1 != RESET) && (tmp2 != RESET))
+ {
+ UART_EndTransmit_IT(huart);
+ }
+
+ if(huart->ErrorCode != HAL_UART_ERROR_NONE)
+ {
+ /* Set the UART state ready to be able to start again the process */
+ huart->State = HAL_UART_STATE_READY;
+
+ HAL_UART_ErrorCallback(huart);
+ }
+}
+
+/**
+ * @brief Tx Transfer completed callbacks.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+ __weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_UART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Tx Half Transfer completed callbacks.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+ __weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_UART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Transfer completed callbacks.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_UART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Rx Half Transfer completed callbacks.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_UART_TxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief UART error callbacks.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+ __weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
+{
+ /* NOTE: This function Should not be modified, when the callback is needed,
+ the HAL_UART_ErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
+ * @brief UART control functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral Control functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control the UART:
+ (+) HAL_LIN_SendBreak() API can be helpful to transmit the break character.
+ (+) HAL_MultiProcessor_EnterMuteMode() API can be helpful to enter the UART in mute mode.
+ (+) HAL_MultiProcessor_ExitMuteMode() API can be helpful to exit the UART mute mode by software.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmits break characters.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
+{
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Send break characters */
+ huart->Instance->CR1 |= USART_CR1_SBK;
+
+ huart->State = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Enters the UART in mute mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
+{
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Enable the USART mute mode by setting the RWU bit in the CR1 register */
+ huart->Instance->CR1 |= USART_CR1_RWU;
+
+ huart->State = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Exits the UART mute mode: wake up software.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_MultiProcessor_ExitMuteMode(UART_HandleTypeDef *huart)
+{
+ /* Check the parameters */
+ assert_param(IS_UART_INSTANCE(huart->Instance));
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /* Disable the USART mute mode by clearing the RWU bit in the CR1 register */
+ huart->Instance->CR1 &= (uint32_t)~((uint32_t)USART_CR1_RWU);
+
+ huart->State = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Enables the UART transmitter and disables the UART receiver.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
+{
+ uint32_t tmpreg = 0x00;
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /*-------------------------- USART CR1 Configuration -----------------------*/
+ tmpreg = huart->Instance->CR1;
+
+ /* Clear TE and RE bits */
+ tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
+
+ /* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
+ tmpreg |= (uint32_t)USART_CR1_TE;
+
+ /* Write to USART CR1 */
+ huart->Instance->CR1 = (uint32_t)tmpreg;
+
+ huart->State = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Enables the UART receiver and disables the UART transmitter.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
+{
+ uint32_t tmpreg = 0x00;
+
+ /* Process Locked */
+ __HAL_LOCK(huart);
+
+ huart->State = HAL_UART_STATE_BUSY;
+
+ /*-------------------------- USART CR1 Configuration -----------------------*/
+ tmpreg = huart->Instance->CR1;
+
+ /* Clear TE and RE bits */
+ tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
+
+ /* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
+ tmpreg |= (uint32_t)USART_CR1_RE;
+
+ /* Write to USART CR1 */
+ huart->Instance->CR1 = (uint32_t)tmpreg;
+
+ huart->State = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup UART_Exported_Functions_Group4 Peripheral State and Errors functions
+ * @brief UART State and Errors functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral State and Errors functions #####
+ ==============================================================================
+ [..]
+ This subsection provides a set of functions allowing to return the State of
+ UART communication process, return Peripheral Errors occurred during communication
+ process
+ (+) HAL_UART_GetState() API can be helpful to check in run-time the state of the UART peripheral.
+ (+) HAL_UART_GetError() check in run-time errors that could be occurred during communication.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Returns the UART state.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL state
+ */
+HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
+{
+ return huart->State;
+}
+
+/**
+* @brief Return the UART error code
+* @param huart : pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART.
+* @retval UART Error Code
+*/
+uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
+{
+ return huart->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @brief DMA UART transmit process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ /* DMA Normal mode*/
+ if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
+ {
+ huart->TxXferCount = 0;
+
+ /* Disable the DMA transfer for transmit request by setting the DMAT bit
+ in the UART CR3 register */
+ huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
+
+ /* Enable the UART Transmit Complete Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
+ }
+ /* DMA Circular mode */
+ else
+ {
+ HAL_UART_TxCpltCallback(huart);
+ }
+}
+
+/**
+ * @brief DMA UART transmit process half complete callback
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_UART_TxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART receive process complete callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ /* DMA Normal mode*/
+ if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
+ {
+ huart->RxXferCount = 0;
+
+ /* Disable the DMA transfer for the receiver request by setting the DMAR bit
+ in the UART CR3 register */
+ huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
+
+ /* Check if a transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ huart->State = HAL_UART_STATE_READY;
+ }
+ }
+ HAL_UART_RxCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART receive process half complete callback
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA module.
+ * @retval None
+ */
+static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+
+ HAL_UART_RxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART communication error callback.
+ * @param hdma: DMA handle
+ * @retval None
+ */
+static void UART_DMAError(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+ huart->RxXferCount = 0;
+ huart->TxXferCount = 0;
+ huart->State= HAL_UART_STATE_READY;
+ huart->ErrorCode |= HAL_UART_ERROR_DMA;
+ HAL_UART_ErrorCallback(huart);
+}
+
+/**
+ * @brief This function handles UART Communication Timeout.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @param Flag: specifies the UART flag to check.
+ * @param Status: The new Flag status (SET or RESET).
+ * @param Timeout: Timeout duration
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
+{
+ uint32_t tickstart = 0;
+
+ /* Get tick */
+ tickstart = HAL_GetTick();
+
+ /* Wait until flag is set */
+ if(Status == RESET)
+ {
+ while(__HAL_UART_GET_FLAG(huart, Flag) == RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+ {
+ /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State= HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ else
+ {
+ while(__HAL_UART_GET_FLAG(huart, Flag) != RESET)
+ {
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+ {
+ /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State= HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Sends an amount of data in non blocking mode.
+ * @param huart: Pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+ uint32_t tmp1 = 0;
+
+ tmp1 = huart->State;
+ if((tmp1 == HAL_UART_STATE_BUSY_TX) || (tmp1 == HAL_UART_STATE_BUSY_TX_RX))
+ {
+ if(huart->Init.WordLength == UART_WORDLENGTH_9B)
+ {
+ tmp = (uint16_t*) huart->pTxBuffPtr;
+ huart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
+ if(huart->Init.Parity == UART_PARITY_NONE)
+ {
+ huart->pTxBuffPtr += 2;
+ }
+ else
+ {
+ huart->pTxBuffPtr += 1;
+ }
+ }
+ else
+ {
+ huart->Instance->DR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF);
+ }
+
+ if(--huart->TxXferCount == 0)
+ {
+ /* Disable the UART Transmit Complete Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
+
+ /* Enable the UART Transmit Complete Interrupt */
+ __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
+ }
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+
+/**
+ * @brief Wraps up transmission in non blocking mode.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
+{
+ /* Disable the UART Transmit Complete Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
+
+ /* Check if a receive process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_RX;
+ }
+ else
+ {
+ /* Disable the UART Parity Error Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+
+ /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State = HAL_UART_STATE_READY;
+ }
+
+ HAL_UART_TxCpltCallback(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Receives an amount of data in non blocking mode
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+ uint32_t tmp1 = 0;
+
+ tmp1 = huart->State;
+ if((tmp1 == HAL_UART_STATE_BUSY_RX) || (tmp1 == HAL_UART_STATE_BUSY_TX_RX))
+ {
+ if(huart->Init.WordLength == UART_WORDLENGTH_9B)
+ {
+ tmp = (uint16_t*) huart->pRxBuffPtr;
+ if(huart->Init.Parity == UART_PARITY_NONE)
+ {
+ *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
+ huart->pRxBuffPtr += 2;
+ }
+ else
+ {
+ *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x00FF);
+ huart->pRxBuffPtr += 1;
+ }
+ }
+ else
+ {
+ if(huart->Init.Parity == UART_PARITY_NONE)
+ {
+ *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
+ }
+ else
+ {
+ *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
+ }
+ }
+
+ if(--huart->RxXferCount == 0)
+ {
+ __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
+
+ /* Check if a transmit process is ongoing or not */
+ if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
+ {
+ huart->State = HAL_UART_STATE_BUSY_TX;
+ }
+ else
+ {
+ /* Disable the UART Parity Error Interrupt */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
+
+ /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
+
+ huart->State = HAL_UART_STATE_READY;
+ }
+ HAL_UART_RxCpltCallback(huart);
+
+ return HAL_OK;
+ }
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Configures the UART peripheral.
+ * @param huart: pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval None
+ */
+static void UART_SetConfig(UART_HandleTypeDef *huart)
+{
+ uint32_t tmpreg = 0x00;
+
+ /* Check the parameters */
+ assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
+ assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
+ assert_param(IS_UART_PARITY(huart->Init.Parity));
+ assert_param(IS_UART_MODE(huart->Init.Mode));
+
+ /*-------------------------- USART CR2 Configuration -----------------------*/
+ tmpreg = huart->Instance->CR2;
+
+ /* Clear STOP[13:12] bits */
+ tmpreg &= (uint32_t)~((uint32_t)USART_CR2_STOP);
+
+ /* Configure the UART Stop Bits: Set STOP[13:12] bits according to huart->Init.StopBits value */
+ tmpreg |= (uint32_t)huart->Init.StopBits;
+
+ /* Write to USART CR2 */
+ huart->Instance->CR2 = (uint32_t)tmpreg;
+
+ /*-------------------------- USART CR1 Configuration -----------------------*/
+ tmpreg = huart->Instance->CR1;
+
+ /* Clear M, PCE, PS, TE and RE bits */
+ tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \
+ USART_CR1_RE | USART_CR1_OVER8));
+
+ /* Configure the UART Word Length, Parity and mode:
+ Set the M bits according to huart->Init.WordLength value
+ Set PCE and PS bits according to huart->Init.Parity value
+ Set TE and RE bits according to huart->Init.Mode value
+ Set OVER8 bit according to huart->Init.OverSampling value */
+ tmpreg |= (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling;
+
+ /* Write to USART CR1 */
+ huart->Instance->CR1 = (uint32_t)tmpreg;
+
+ /*-------------------------- USART CR3 Configuration -----------------------*/
+ tmpreg = huart->Instance->CR3;
+
+ /* Clear CTSE and RTSE bits */
+ tmpreg &= (uint32_t)~((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE));
+
+ /* Configure the UART HFC: Set CTSE and RTSE bits according to huart->Init.HwFlowCtl value */
+ tmpreg |= huart->Init.HwFlowCtl;
+
+ /* Write to USART CR3 */
+ huart->Instance->CR3 = (uint32_t)tmpreg;
+
+ /* Check the Over Sampling */
+ if(huart->Init.OverSampling == UART_OVERSAMPLING_8)
+ {
+ /*-------------------------- USART BRR Configuration ---------------------*/
+ if((huart->Instance == USART1) || (huart->Instance == USART6))
+ {
+ huart->Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
+ }
+ else
+ {
+ huart->Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate);
+ }
+ }
+ else
+ {
+ /*-------------------------- USART BRR Configuration ---------------------*/
+ if((huart->Instance == USART1) || (huart->Instance == USART6))
+ {
+ huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
+ }
+ else
+ {
+ huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate);
+ }
+ }
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_UART_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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