Old / new BT module communication:
The old / new BT module do have a sligthly different command set. To keep them compatible a function has been added which returns, based on the HW identification, the command string which matches to the module. In case a command is not supported the value 0 is returned and the calling function may react. E.g. with skipping of configuration steps like it is done now for the new module.
line source
/**+ − ******************************************************************************+ − * @file stm32f4xx_hal_usart.c+ − * @author MCD Application Team+ − * @brief USART HAL module driver.+ − * This file provides firmware functions to manage the following+ − * functionalities of the Universal Synchronous Asynchronous Receiver Transmitter (USART) peripheral:+ − * + Initialization and de-initialization functions+ − * + IO operation functions+ − * + Peripheral Control functions+ − @verbatim+ − ==============================================================================+ − ##### How to use this driver #####+ − ==============================================================================+ − [..]+ − The USART HAL driver can be used as follows:+ − + − (#) Declare a USART_HandleTypeDef handle structure.+ − (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit () API:+ − (##) Enable the USARTx interface clock.+ − (##) USART pins configuration:+ − (+++) Enable the clock for the USART GPIOs.+ − (+++) Configure these USART pins as alternate function pull-up.+ − (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(),+ − HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):+ − (+++) Configure the USARTx interrupt priority.+ − (+++) Enable the NVIC USART IRQ handle.+ − (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA()+ − HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() 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 USART 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 husart Init structure.+ − + − (#) Initialize the USART registers by calling the HAL_USART_Init() API:+ − (++) These APIs configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)+ − by calling the customized HAL_USART_MspInit(&husart) API.+ − + − -@@- The specific USART interrupts (Transmission complete interrupt,+ − RXNE interrupt and Error Interrupts) will be managed using the macros+ − __HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process.+ − + − (#) Three operation modes are available within this driver :+ − + − *** Polling mode IO operation ***+ − =================================+ − [..]+ − (+) Send an amount of data in blocking mode using HAL_USART_Transmit()+ − (+) Receive an amount of data in blocking mode using HAL_USART_Receive()+ − + − *** Interrupt mode IO operation ***+ − ===================================+ − [..]+ − (+) Send an amount of data in non blocking mode using HAL_USART_Transmit_IT()+ − (+) At transmission end of transfer HAL_USART_TxHalfCpltCallback is executed and user can+ − add his own code by customization of function pointer HAL_USART_TxCpltCallback+ − (+) Receive an amount of data in non blocking mode using HAL_USART_Receive_IT()+ − (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can+ − add his own code by customization of function pointer HAL_USART_RxCpltCallback+ − (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can+ − add his own code by customization of function pointer HAL_USART_ErrorCallback+ − + − *** DMA mode IO operation ***+ − ==============================+ − [..]+ − (+) Send an amount of data in non blocking mode (DMA) using HAL_USART_Transmit_DMA()+ − (+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can+ − add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback+ − (+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can+ − add his own code by customization of function pointer HAL_USART_TxCpltCallback+ − (+) Receive an amount of data in non blocking mode (DMA) using HAL_USART_Receive_DMA()+ − (+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can+ − add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback+ − (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can+ − add his own code by customization of function pointer HAL_USART_RxCpltCallback+ − (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can+ − add his own code by customization of function pointer HAL_USART_ErrorCallback+ − (+) Pause the DMA Transfer using HAL_USART_DMAPause()+ − (+) Resume the DMA Transfer using HAL_USART_DMAResume()+ − (+) Stop the DMA Transfer using HAL_USART_DMAStop()+ − + − *** USART HAL driver macros list ***+ − =============================================+ − [..]+ − Below the list of most used macros in USART HAL driver.+ − + − (+) __HAL_USART_ENABLE: Enable the USART peripheral+ − (+) __HAL_USART_DISABLE: Disable the USART peripheral+ − (+) __HAL_USART_GET_FLAG : Check whether the specified USART flag is set or not+ − (+) __HAL_USART_CLEAR_FLAG : Clear the specified USART pending flag+ − (+) __HAL_USART_ENABLE_IT: Enable the specified USART interrupt+ − (+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt+ − + − [..]+ − (@) You can refer to the USART HAL driver header file for more useful macros+ − + − @endverbatim+ − ******************************************************************************+ − * @attention+ − *+ − * <h2><center>© COPYRIGHT(c) 2017 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 USART USART+ − * @brief HAL USART Synchronous module driver+ − * @{+ − */+ − #ifdef HAL_USART_MODULE_ENABLED+ − /* Private typedef -----------------------------------------------------------*/+ − /* Private define ------------------------------------------------------------*/+ − /** @addtogroup USART_Private_Constants+ − * @{+ − */+ − #define DUMMY_DATA 0xFFFFU+ − #define USART_TIMEOUT_VALUE 22000U+ − /**+ − * @}+ − */+ − /* Private macro -------------------------------------------------------------*/+ − /* Private variables ---------------------------------------------------------*/+ − /* Private function prototypes -----------------------------------------------*/+ − /* Private functions ---------------------------------------------------------*/+ − /** @addtogroup USART_Private_Functions+ − * @{+ − */+ − static void USART_EndTxTransfer(USART_HandleTypeDef *husart);+ − static void USART_EndRxTransfer(USART_HandleTypeDef *husart);+ − static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart);+ − static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart);+ − static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart);+ − static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart);+ − static void USART_SetConfig (USART_HandleTypeDef *husart);+ − static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma);+ − static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);+ − static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);+ − static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);+ − static void USART_DMAError(DMA_HandleTypeDef *hdma);+ − static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma);+ − static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);+ − static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);+ − + − static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout);+ − /**+ − * @}+ − */+ − + − /* Exported functions --------------------------------------------------------*/+ − /** @defgroup USART_Exported_Functions USART Exported Functions+ − * @{+ − */+ − + − /** @defgroup USART_Exported_Functions_Group1 USART 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 USART+ − in asynchronous and in synchronous modes.+ − (+) 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 USART frame formats.+ − (++) USART polarity+ − (++) USART phase+ − (++) USART LastBit+ − (++) Receiver/transmitter modes+ − + − [..]+ − The HAL_USART_Init() function follows the USART synchronous configuration+ − procedure (details for the procedure are available in reference manual (RM0329)).+ − + − @endverbatim+ − * @{+ − */+ − + − /**+ − * @brief Initializes the USART mode according to the specified+ − * parameters in the USART_InitTypeDef and create the associated handle.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart)+ − {+ − /* Check the USART handle allocation */+ − if(husart == NULL)+ − {+ − return HAL_ERROR;+ − }+ − + − /* Check the parameters */+ − assert_param(IS_USART_INSTANCE(husart->Instance));+ − + − if(husart->State == HAL_USART_STATE_RESET)+ − {+ − /* Allocate lock resource and initialize it */+ − husart->Lock = HAL_UNLOCKED;+ − /* Init the low level hardware */+ − HAL_USART_MspInit(husart);+ − }+ − + − husart->State = HAL_USART_STATE_BUSY;+ − + − /* Set the USART Communication parameters */+ − USART_SetConfig(husart);+ − + − /* In USART mode, the following bits must be kept cleared:+ − - LINEN bit in the USART_CR2 register+ − - HDSEL, SCEN and IREN bits in the USART_CR3 register */+ − CLEAR_BIT(husart->Instance->CR2, USART_CR2_LINEN);+ − CLEAR_BIT(husart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));+ − + − /* Enable the Peripheral */+ − __HAL_USART_ENABLE(husart);+ − + − /* Initialize the USART state */+ − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State= HAL_USART_STATE_READY;+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief DeInitializes the USART peripheral.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart)+ − {+ − /* Check the USART handle allocation */+ − if(husart == NULL)+ − {+ − return HAL_ERROR;+ − }+ − + − /* Check the parameters */+ − assert_param(IS_USART_INSTANCE(husart->Instance));+ − + − husart->State = HAL_USART_STATE_BUSY;+ − + − /* Disable the Peripheral */+ − __HAL_USART_DISABLE(husart);+ − + − /* DeInit the low level hardware */+ − HAL_USART_MspDeInit(husart);+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_RESET;+ − + − /* Release Lock */+ − __HAL_UNLOCK(husart);+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief USART MSP Init.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_MspInit(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_USART_MspInit could be implemented in the user file+ − */+ − }+ − + − /**+ − * @brief USART MSP DeInit.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_MspDeInit(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_USART_MspDeInit could be implemented in the user file+ − */+ − }+ − + − /**+ − * @}+ − */+ − + − /** @defgroup USART_Exported_Functions_Group2 IO operation functions+ − * @brief USART Transmit and Receive functions+ − *+ − @verbatim+ − ==============================================================================+ − ##### IO operation functions #####+ − ==============================================================================+ − [..]+ − This subsection provides a set of functions allowing to manage the USART synchronous+ − data transfers.+ − + − [..]+ − The USART supports master mode only: it cannot receive or send data related to an input+ − clock (SCLK is always an output).+ − + − (#) There are two modes of transfer:+ − (++) Blocking mode: The communication is performed in polling mode.+ − The HAL status of all data processing is returned by the same function+ − after finishing transfer.+ − (++) No-Blocking mode: The communication is performed using Interrupts+ − or DMA, These API's return the HAL status.+ − The end of the data processing will be indicated through the+ − dedicated USART IRQ when using Interrupt mode or the DMA IRQ when+ − using DMA mode.+ − The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback()+ − user callbacks+ − will be executed respectively at the end of the transmit or Receive process+ − The HAL_USART_ErrorCallback() user callback will be executed when a communication+ − error is detected+ − + − (#) Blocking mode APIs are :+ − (++) HAL_USART_Transmit() in simplex mode+ − (++) HAL_USART_Receive() in full duplex receive only+ − (++) HAL_USART_TransmitReceive() in full duplex mode+ − + − (#) Non Blocking mode APIs with Interrupt are :+ − (++) HAL_USART_Transmit_IT()in simplex mode+ − (++) HAL_USART_Receive_IT() in full duplex receive only+ − (++) HAL_USART_TransmitReceive_IT() in full duplex mode+ − (++) HAL_USART_IRQHandler()+ − + − (#) Non Blocking mode functions with DMA are :+ − (++) HAL_USART_Transmit_DMA()in simplex mode+ − (++) HAL_USART_Receive_DMA() in full duplex receive only+ − (++) HAL_USART_TransmitReceie_DMA() in full duplex mode+ − (++) HAL_USART_DMAPause()+ − (++) HAL_USART_DMAResume()+ − (++) HAL_USART_DMAStop()+ − + − (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:+ − (++) HAL_USART_TxHalfCpltCallback()+ − (++) HAL_USART_TxCpltCallback()+ − (++) HAL_USART_RxHalfCpltCallback()+ − (++) HAL_USART_RxCpltCallback()+ − (++) HAL_USART_ErrorCallback()+ − (++) HAL_USART_TxRxCpltCallback()+ − + − @endverbatim+ − * @{+ − */+ − + − /**+ − * @brief Simplex Send an amount of data in blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pTxData Pointer to data buffer+ − * @param Size Amount of data to be sent+ − * @param Timeout Timeout duration+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout)+ − {+ − uint16_t* tmp;+ − uint32_t tickstart = 0U;+ − + − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pTxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − + − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_TX;+ − + − /* Init tickstart for timeout managment */+ − tickstart = HAL_GetTick();+ − + − husart->TxXferSize = Size;+ − husart->TxXferCount = Size;+ − while(husart->TxXferCount > 0U)+ − {+ − husart->TxXferCount--;+ − if(husart->Init.WordLength == USART_WORDLENGTH_9B)+ − {+ − /* Wait for TC flag in order to write data in DR */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − tmp = (uint16_t*) pTxData;+ − husart->Instance->DR = (*tmp & (uint16_t)0x01FF);+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − pTxData += 2U;+ − }+ − else+ − {+ − pTxData += 1U;+ − }+ − }+ − else+ − {+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − husart->Instance->DR = (*pTxData++ & (uint8_t)0xFF);+ − }+ − }+ − + − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − + − husart->State = HAL_USART_STATE_READY;+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Full-Duplex Receive an amount of data in blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pRxData Pointer to data buffer+ − * @param Size Amount of data to be received+ − * @param Timeout Timeout duration+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)+ − {+ − uint16_t* tmp;+ − uint32_t tickstart = 0U;+ − + − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pRxData == NULL) || (Size == 0))+ ̢蠉âââ‚Ã‚¬Ã…¡Ã‚¬Ã¢â€žÂ¢ {+ − return HAL_ERROR;+ − }+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_RX;+ − + − /* Init tickstart for timeout managment */+ − tickstart = HAL_GetTick();+ − + − husart->RxXferSize = Size;+ − husart->RxXferCount = Size;+ − /* Check the remain data to be received */+ − while(husart->RxXferCount > 0U)+ − {+ − husart->RxXferCount--;+ − if(husart->Init.WordLength == USART_WORDLENGTH_9B)+ − {+ − /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − /* Send dummy byte in order to generate clock */+ − husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);+ − + − /* Wait for RXNE Flag */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − tmp = (uint16_t*) pRxData ;+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);+ − pRxData +=2U;+ − }+ − else+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);+ − pRxData +=1U;+ − }+ − }+ − else+ − {+ − /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − + − /* Send Dummy Byte in order to generate clock */+ − husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF);+ − + − /* Wait until RXNE flag is set to receive the byte */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − /* Receive data */+ − *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);+ − }+ − else+ − {+ − /* Receive data */+ − *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);+ − }+ − + − }+ − }+ − + − husart->State = HAL_USART_STATE_READY;+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Full-Duplex Send receive an amount of data in full-duplex mode (blocking mode).+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pTxData Pointer to data transmitted buffer+ − * @param pRxData Pointer to data received buffer+ − * @param Size Amount of data to be sent+ − * @param Timeout Timeout duration+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)+ − {+ − uint16_t* tmp;+ − uint32_t tickstart = 0U;+ − + − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pTxData == NULL) || (pRxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_RX;+ − + − /* Init tickstart for timeout managment */+ − tickstart = HAL_GetTick();+ − + − husart->RxXferSize = Size;+ − husart->TxXferSize = Size;+ − husart->TxXferCount = Size;+ − husart->RxXferCount = Size;+ − + − /* Check the remain data to be received */+ − while(husart->TxXferCount > 0U)+ − {+ − husart->TxXferCount--;+ − husart->RxXferCount--;+ − if(husart->Init.WordLength == USART_WORDLENGTH_9B)+ − {+ − /* Wait for TC flag in order to write data in DR */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − tmp = (uint16_t*) pTxData;+ − husart->Instance->DR = (*tmp & (uint16_t)0x01FF);+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − pTxData += 2U;+ − }+ − else+ − {+ − pTxData += 1U;+ − }+ − + − /* Wait for RXNE Flag */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − tmp = (uint16_t*) pRxData ;+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);+ − pRxData += 2U;+ − }+ − else+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);+ − pRxData += 1U;+ − }+ − }+ − else+ − {+ − /* Wait for TC flag in order to write data in DR */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − husart->Instance->DR = (*pTxData++ & (uint8_t)0x00FF);+ − + − /* Wait for RXNE Flag */+ − if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)+ − {+ − return HAL_TIMEOUT;+ − }+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − /* Receive data */+ − *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);+ − }+ − else+ − {+ − /* Receive data */+ − *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);+ − }+ − }+ − }+ − + − husart->State = HAL_USART_STATE_READY;+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Simplex Send an amount of data in non-blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pTxData Pointer to data buffer+ − * @param Size Amount of data to be sent+ − * @retval HAL status+ − * @note The USART errors are not managed to avoid the overrun error.+ − */+ − HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)+ − {+ − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pTxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − + − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->pTxBuffPtr = pTxData;+ − husart->TxXferSize = Size;+ − husart->TxXferCount = Size;+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_TX;+ − + − /* The USART Error Interrupts: (Frame error, Noise error, Overrun error)+ − are not managed by the USART transmit process to avoid the overrun interrupt+ − when the USART mode is configured for transmit and receive "USART_MODE_TX_RX"+ − to benefit for the frame error and noise interrupts the USART mode should be+ − configured only for transmit "USART_MODE_TX"+ − The __HAL_USART_ENABLE_IT(husart, USART_IT_ERR) can be used to enable the Frame error,+ − Noise error interrupt */+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − /* Enable the USART Transmit Data Register Empty Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Simplex Receive an amount of data in non-blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pRxData Pointer to data buffer+ − * @param Size Amount of data to be received+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)+ − {+ − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pRxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->pRxBuffPtr = pRxData;+ − husart->RxXferSize = Size;+ − husart->RxXferCount = Size;+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_RX;+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − /* Enable the USART Parity Error and Data Register not empty Interrupts */+ − SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);+ − + − /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − SET_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* Send dummy byte in order to generate the clock for the slave to send data */+ − husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pTxData Pointer to data transmitted buffer+ − * @param pRxData Pointer to data received buffer+ − * @param Size Amount of data to be received+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)+ − {+ − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pTxData == NULL) || (pRxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->pRxBuffPtr = pRxData;+ − husart->RxXferSize = Size;+ − husart->RxXferCount = Size;+ − husart->pTxBuffPtr = pTxData;+ − husart->TxXferSize = Size;+ − husart->TxXferCount = Size;+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_TX_RX;+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − /* Enable the USART Data Register not empty Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);+ − + − /* Enable the USART Parity Error Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);+ − + − /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − SET_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* Enable the USART Transmit Data Register Empty Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Simplex Send an amount of data in non-blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pTxData Pointer to data buffer+ − * @param Size Amount of data to be sent+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)+ − {+ − uint32_t *tmp;+ − + − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pTxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->pTxBuffPtr = pTxData;+ − husart->TxXferSize = Size;+ − husart->TxXferCount = Size;+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_TX;+ − + − /* Set the USART DMA transfer complete callback */+ − husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;+ − + − /* Set the USART DMA Half transfer complete callback */+ − husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;+ − + − /* Set the DMA error callback */+ − husart->hdmatx->XferErrorCallback = USART_DMAError;+ − + − /* Set the DMA abort callback */+ − husart->hdmatx->XferAbortCallback = NULL;+ − + − /* Enable the USART transmit DMA Stream */+ − tmp = (uint32_t*)&pTxData;+ − HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);+ − + − /* Clear the TC flag in the SR register by writing 0 to it */+ − __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − /* Enable the DMA transfer for transmit request by setting the DMAT bit+ − in the USART CR3 register */+ − SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Full-Duplex Receive an amount of data in non-blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pRxData Pointer to data buffer+ − * @param Size Amount of data to be received+ − * @retval HAL status+ − * @note The USART DMA transmit stream must be configured in order to generate the clock for the slave.+ − * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.+ − */+ − HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)+ − {+ − uint32_t *tmp;+ − + − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pRxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − + − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->pRxBuffPtr = pRxData;+ − husart->RxXferSize = Size;+ − husart->pTxBuffPtr = pRxData;+ − husart->TxXferSize = Size;+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_RX;+ − + − /* Set the USART DMA Rx transfer complete callback */+ − husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;+ − + − /* Set the USART DMA Half transfer complete callback */+ − husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;+ − + − /* Set the USART DMA Rx transfer error callback */+ − husart->hdmarx->XferErrorCallback = USART_DMAError;+ − + − /* Set the DMA abort callback */+ − husart->hdmarx->XferAbortCallback = NULL;+ − + − /* Set the USART Tx DMA transfer complete callback as NULL because the communication closing+ − is performed in DMA reception complete callback */+ − husart->hdmatx->XferHalfCpltCallback = NULL;+ − husart->hdmatx->XferCpltCallback = NULL;+ − + − /* Set the DMA error callback */+ − husart->hdmatx->XferErrorCallback = USART_DMAError;+ − + − /* Set the DMA AbortCpltCallback */+ − husart->hdmatx->XferAbortCallback = NULL;+ − + − /* Enable the USART receive DMA Stream */+ − tmp = (uint32_t*)&pRxData;+ − HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);+ − + − /* Enable the USART transmit DMA Stream: the transmit stream is used in order+ − to generate in the non-blocking mode the clock to the slave device,+ − this mode isn't a simplex receive mode but a full-duplex receive one */+ − HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);+ − + − /* Clear the Overrun flag just before enabling the DMA Rx request: mandatory for the second transfer */+ − __HAL_USART_CLEAR_OREFLAG(husart);+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − /* Enable the USART Parity Error Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);+ − + − /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − SET_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* Enable the DMA transfer for the receiver request by setting the DMAR bit+ − in the USART CR3 register */+ − SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);+ − + ̢蠉â‚ÂÃââ‚¬Å¡Ãƒâ€šÃ‚¬ÃƒÆ’ƒÂ¢Ã¢â‚¬Å¾Ã‚¢ /* Enable the DMA transfer for transmit request by setting the DMAT bit+ − in the USART CR3 register */+ − SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Full-Duplex Transmit Receive an amount of data in non-blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param pTxData Pointer to data transmitted buffer+ − * @param pRxData Pointer to data received buffer+ − * @param Size Amount of data to be received+ − * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)+ − {+ − uint32_t *tmp;+ − + − if(husart->State == HAL_USART_STATE_READY)+ − {+ − if((pTxData == NULL) || (pRxData == NULL) || (Size == 0))+ − {+ − return HAL_ERROR;+ − }+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − husart->pRxBuffPtr = pRxData;+ − husart->RxXferSize = Size;+ − husart->pTxBuffPtr = pTxData;+ − husart->TxXferSize = Size;+ − + − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − husart->State = HAL_USART_STATE_BUSY_TX_RX;+ − + − /* Set the USART DMA Rx transfer complete callback */+ − husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;+ − + − /* Set the USART DMA Half transfer complete callback */+ − husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;+ − + − /* Set the USART DMA Tx transfer complete callback */+ − husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;+ − + − /* Set the USART DMA Half transfer complete callback */+ − husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;+ − + − /* Set the USART DMA Tx transfer error callback */+ − husart->hdmatx->XferErrorCallback = USART_DMAError;+ − + − /* Set the USART DMA Rx transfer error callback */+ − husart->hdmarx->XferErrorCallback = USART_DMAError;+ − + − /* Set the DMA abort callback */+ − husart->hdmarx->XferAbortCallback = NULL;+ − + − /* Enable the USART receive DMA Stream */+ − tmp = (uint32_t*)&pRxData;+ − HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);+ − + − /* Enable the USART transmit DMA Stream */+ − tmp = (uint32_t*)&pTxData;+ − HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);+ − + − /* Clear the TC flag in the SR register by writing 0 to it */+ − __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);+ − + − /* Clear the Overrun flag: mandatory for the second transfer in circular mode */+ − __HAL_USART_CLEAR_OREFLAG(husart);+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − /* Enable the USART Parity Error Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);+ − + − /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − SET_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* Enable the DMA transfer for the receiver request by setting the DMAR bit+ − in the USART CR3 register */+ − SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);+ − + − /* Enable the DMA transfer for transmit request by setting the DMAT bit+ − in the USART CR3 register */+ − SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Pauses the DMA Transfer.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart)+ − {+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − /* Disable the USART DMA Tx request */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief Resumes the DMA Transfer.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart)+ − {+ − /* Process Locked */+ − __HAL_LOCK(husart);+ − + − /* Enable the USART DMA Tx request */+ − SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief Stops the DMA Transfer.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart)+ − {+ − uint32_t dmarequest = 0x00U;+ − /* The Lock is not implemented on this API to allow the user application+ − to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback():+ − when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated+ − and the correspond call back is executed HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback()+ − */+ − + − /* Stop USART DMA Tx request if ongoing */+ − dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT);+ − if((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)+ − {+ − USART_EndTxTransfer(husart);+ − + − /* Abort the USART DMA Tx channel */+ − if(husart->hdmatx != NULL)+ − {+ − HAL_DMA_Abort(husart->hdmatx);+ − }+ − + − /* Disable the USART Tx DMA request */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − }+ − + − /* Stop USART DMA Rx request if ongoing */+ − dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);+ − if((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)+ − {+ − USART_EndRxTransfer(husart);+ − + − /* Abort the USART DMA Rx channel */+ − if(husart->hdmarx != NULL)+ − {+ − HAL_DMA_Abort(husart->hdmarx);+ − }+ − + − /* Disable the USART Rx DMA request */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);+ − }+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief Abort ongoing transfer (blocking mode).+ − * @param husart USART handle.+ − * @note This procedure could be used for aborting any ongoing transfer (either Tx or Rx,+ − * as described by TransferType parameter) started in Interrupt or DMA mode.+ − * This procedure performs following operations :+ − * - Disable PPP Interrupts (depending of transfer direction)+ − * - Disable the DMA transfer in the peripheral register (if enabled)+ − * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)+ − * - Set handle State to READY+ − * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_Abort(USART_HandleTypeDef *husart)+ − {+ − /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */+ − CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* Disable the USART DMA Tx request if enabled */+ − if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))+ − {+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − /* Abort the USART DMA Tx channel : use blocking DMA Abort API (no callback) */+ − if(husart->hdmatx != NULL)+ − {+ − /* Set the USART DMA Abort callback to Null. + − No call back execution at end of DMA abort procedure */+ − husart->hdmatx->XferAbortCallback = NULL;+ − + − HAL_DMA_Abort(husart->hdmatx);+ − }+ − }+ − + − /* Disable the USART DMA Rx request if enabled */+ − if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))+ − {+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);+ − + − /* Abort the USART DMA Rx channel : use blocking DMA Abort API (no callback) */+ − if(husart->hdmarx != NULL)+ − {+ − /* Set the USART DMA Abort callback to Null. + − No call back execution at end of DMA abort procedure */+ − husart->hdmarx->XferAbortCallback = NULL;+ − + − HAL_DMA_Abort(husart->hdmarx);+ − }+ − }+ − + − /* Reset Tx and Rx transfer counters */+ − husart->TxXferCount = 0x00U; + − husart->RxXferCount = 0x00U; + − + − /* Restore husart->State to Ready */+ − husart->State = HAL_USART_STATE_READY;+ − + − /* Reset Handle ErrorCode to No Error */+ − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief Abort ongoing transfer (Interrupt mode).+ − * @param husart USART handle.+ − * @note This procedure could be used for aborting any ongoing transfer (either Tx or Rx,+ − * as described by TransferType parameter) started in Interrupt or DMA mode.+ − * This procedure performs following operations :+ − * - Disable PPP Interrupts (depending of transfer direction)+ − * - Disable the DMA transfer in the peripheral register (if enabled)+ − * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)+ − * - Set handle State to READY+ − * - At abort completion, call user abort complete callback+ − * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be+ − * considered as completed only when user abort complete callback is executed (not when exiting function).+ − * @retval HAL status+ − */+ − HAL_StatusTypeDef HAL_USART_Abort_IT(USART_HandleTypeDef *husart)+ − {+ − uint32_t AbortCplt = 0x01U;+ − + − /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */+ − CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* If DMA Tx and/or DMA Rx Handles are associated to USART Handle, DMA Abort complete callbacks should be initialised+ − before any call to DMA Abort functions */+ − /* DMA Tx Handle is valid */+ − if(husart->hdmatx != NULL)+ − {+ − /* Set DMA Abort Complete callback if USART DMA Tx request if enabled.+ − Otherwise, set it to NULL */+ − if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))+ − {+ − husart->hdmatx->XferAbortCallback = USART_DMATxAbortCallback;+ − }+ − else+ − {+ − husart->hdmatx->XferAbortCallback = NULL;+ − }+ − }+ − /* DMA Rx Handle is valid */+ − if(husart->hdmarx != NULL)+ − {+ − /* Set DMA Abort Complete callback if USART DMA Rx request if enabled.+ − Otherwise, set it to NULL */+ − if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))+ − {+ − husart->hdmarx->XferAbortCallback = USART_DMARxAbortCallback;+ − }+ − else+ − {+ − husart->hdmarx->XferAbortCallback = NULL;+ − }+ − }+ − + − /* Disable the USART DMA Tx request if enabled */+ − if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))+ − {+ − /* Disable DMA Tx at USART level */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − /* Abort the USART DMA Tx channel : use non blocking DMA Abort API (callback) */+ − if(husart->hdmatx != NULL)+ − {+ − /* USART Tx DMA Abort callback has already been initialised : + − will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */+ − + − /* Abort DMA TX */+ − if(HAL_DMA_Abort_IT(husart->hdmatx) != HAL_OK)+ − {+ − husart->hdmatx->XferAbortCallback = NULL;+ − }+ − else+ − {+ − AbortCplt = 0x00U;+ − }+ − }+ − }+ − + − /* Disable the USART DMA Rx request if enabled */+ − if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))+ − {+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);+ − + − /* Abort the USART DMA Rx channel : use non blocking DMA Abort API (callback) */+ − if(husart->hdmarx != NULL)+ − {+ − /* USART Rx DMA Abort callback has already been initialised : + − will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */+ − + − /* Abort DMA RX */+ − if(HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)+ − {+ − husart->hdmarx->XferAbortCallback = NULL;+ − AbortCplt = 0x01U;+ − }+ − else+ − {+ − AbortCplt = 0x00U;+ − }+ − }+ − }+ − + − /* if no DMA abort complete callback execution is required => call user Abort Complete callback */+ − if(AbortCplt == 0x01U)+ − {+ − /* Reset Tx and Rx transfer counters */+ − husart->TxXferCount = 0x00U; + − husart->RxXferCount = 0x00U;+ − + − /* Reset errorCode */+ − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − + − /* Restore husart->State to Ready */+ − husart->State = HAL_USART_STATE_READY;+ − + − /* As no DMA to be aborted, call directly user Abort complete callback */+ − HAL_USART_AbortCpltCallback(husart);+ − }+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief This function handles USART interrupt request.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − void HAL_USART_IRQHandler(USART_HandleTypeDef *husart)+ − {+ − uint32_t isrflags = READ_REG(husart->Instance->SR);+ − uint32_t cr1its = READ_REG(husart->Instance->CR1);+ − uint32_t cr3its = READ_REG(husart->Instance->CR3);+ − uint32_t errorflags = 0x00U;+ − uint32_t dmarequest = 0x00U;+ − + − /* If no error occurs */+ − errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE));+ − if(errorflags == RESET)+ − {+ − /* USART in mode Receiver -------------------------------------------------*/+ − if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))+ − {+ − if(husart->State == HAL_USART_STATE_BUSY_RX)+ − {+ − USART_Receive_IT(husart);+ − }+ − else+ − {+ − USART_TransmitReceive_IT(husart);+ − }+ − return;+ − }+ − }+ − /* If some errors occur */+ − if((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))+ − {+ − /* USART parity error interrupt occurred ----------------------------------*/+ − if(((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))+ − {+ − husart->ErrorCode |= HAL_USART_ERROR_PE;+ − }+ − + − /* USART noise error interrupt occurred --------------------------------*/+ − if(((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))+ − {+ − husart->ErrorCode |= HAL_USART_ERROR_NE;+ − }+ − + − /* USART frame error interrupt occurred --------------------------------*/+ − if(((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))+ − {+ − husart->ErrorCode |= HAL_USART_ERROR_FE;+ − }+ − + − /* USART Over-Run interrupt occurred -----------------------------------*/+ − if(((isrflags & USART_SR_ORE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))+ − {+ − husart->ErrorCode |= HAL_USART_ERROR_ORE;+ − }+ − + − if(husart->ErrorCode != HAL_USART_ERROR_NONE)+ − {+ − /* USART in mode Receiver -----------------------------------------------*/+ − if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))+ − {+ − if(husart->State == HAL_USART_STATE_BUSY_RX)+ − {+ − USART_Receive_IT(husart);+ − }+ − else+ − {+ − USART_TransmitReceive_IT(husart);+ − }+ − }+ − /* If Overrun error occurs, or if any error occurs in DMA mode reception,+ − consider error as blocking */+ − dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);+ − if(((husart->ErrorCode & HAL_USART_ERROR_ORE) != RESET) || dmarequest)+ − {+ − /* Set the USART state ready to be able to start again the process,+ − Disable Rx Interrupts, and disable Rx DMA request, if ongoing */+ − USART_EndRxTransfer(husart);+ − + − /* Disable the USART DMA Rx request if enabled */+ − if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))+ − {+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);+ − + − /* Abort the USART DMA Rx channel */+ − if(husart->hdmarx != NULL)+ − {+ − /* Set the USART DMA Abort callback :+ − will lead to call HAL_USART_ErrorCallback() at end of DMA abort procedure */+ − husart->hdmarx->XferAbortCallback = USART_DMAAbortOnError;+ − + − if(HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)+ − {+ − /* Call Directly XferAbortCallback function in case of error */+ − husart->hdmarx->XferAbortCallback(husart->hdmarx);+ − }+ − }+ − else+ − {+ − /* Call user error callback */+ − HAL_USART_ErrorCallback(husart);+ − }+ − }+ − else+ − {+ − /* Call user error callback */+ − HAL_USART_ErrorCallback(husart);+ − }+ − }+ − else+ − {+ − /* Call user error callback */+ ÃÂ¢Ã‹â€ Ã¢â‚¬â„¢ HAL_USART_ErrorCallback(husart);+ − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − }+ − }+ − return;+ − }+ − + − /* USART in mode Transmitter -----------------------------------------------*/+ − if(((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))+ − {+ − if(husart->State == HAL_USART_STATE_BUSY_TX)+ − {+ − USART_Transmit_IT(husart);+ − }+ − else+ − {+ − USART_TransmitReceive_IT(husart);+ − }+ − return;+ − }+ − + − /* USART in mode Transmitter (transmission end) ----------------------------*/+ − if(((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))+ − {+ − USART_EndTransmit_IT(husart);+ − return;+ − }+ − }+ − + − /**+ − * @brief Tx Transfer completed callbacks.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_TxCpltCallback(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_USART_TxCpltCallback could be implemented in the user file+ − */+ − }+ − + − /**+ − * @brief Tx Half Transfer completed callbacks.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_TxHalfCpltCallback(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_USART_TxCpltCallback could be implemented in the user file+ − */+ − }+ − + − /**+ − * @brief Rx Transfer completed callbacks.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_RxCpltCallback(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_USART_TxCpltCallback could be implemented in the user file+ − */+ − }+ − + − /**+ − * @brief Rx Half Transfer completed callbacks.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_RxHalfCpltCallback(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_USART_TxCpltCallback could be implemented in the user file+ − */+ − }+ − + − /**+ − * @brief Tx/Rx Transfers completed callback for the non-blocking process.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_TxRxCpltCallback(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_USART_TxCpltCallback could be implemented in the user file+ − */+ − }+ − + − /**+ − * @brief USART error callbacks.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − __weak void HAL_USART_ErrorCallback(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_USART_ErrorCallback could be implemented in the user file+ − */+ − }+ − + − /**+ − * @brief USART Abort Complete callback.+ − * @param husart USART handle.+ − * @retval None+ − */+ − __weak void HAL_USART_AbortCpltCallback (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_USART_AbortCpltCallback can be implemented in the user file.+ − */+ − }+ − + − /**+ − * @}+ − */+ − + − /** @defgroup USART_Exported_Functions_Group3 Peripheral State and Errors functions+ − * @brief USART State and Errors functions+ − *+ − @verbatim+ − ==============================================================================+ − ##### Peripheral State and Errors functions #####+ − ==============================================================================+ − [..]+ − This subsection provides a set of functions allowing to return the State of+ − USART communication+ − process, return Peripheral Errors occurred during communication process+ − (+) HAL_USART_GetState() API can be helpful to check in run-time the state+ − of the USART peripheral.+ − (+) HAL_USART_GetError() check in run-time errors that could be occurred during+ − communication.+ − @endverbatim+ − * @{+ − */+ − + − /**+ − * @brief Returns the USART state.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL state+ − */+ − HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart)+ − {+ − return husart->State;+ − }+ − + − /**+ − * @brief Return the USART error code+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART.+ − * @retval USART Error Code+ − */+ − uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart)+ − {+ − return husart->ErrorCode;+ − }+ − + − /**+ − * @}+ − */+ − + − /**+ − * @brief DMA USART transmit process complete callback.+ − * @param hdma DMA handle+ − * @retval None+ − */+ − static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma)+ − {+ − USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;+ − /* DMA Normal mode */+ − if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)+ − {+ − husart->TxXferCount = 0U;+ − if(husart->State == HAL_USART_STATE_BUSY_TX)+ − {+ − /* Disable the DMA transfer for transmit request by resetting the DMAT bit+ − in the USART CR3 register */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − /* Enable the USART Transmit Complete Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_TCIE);+ − }+ − }+ − /* DMA Circular mode */+ − else+ − {+ − if(husart->State == HAL_USART_STATE_BUSY_TX)+ − {+ − HAL_USART_TxCpltCallback(husart);+ − }+ − }+ − }+ − + − /**+ − * @brief DMA USART 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 USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)+ − {+ − USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;+ − + − HAL_USART_TxHalfCpltCallback(husart);+ − }+ − + − /**+ − * @brief DMA USART receive process complete callback.+ − * @param hdma DMA handle+ − * @retval None+ − */+ − static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)+ − {+ − USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;+ − /* DMA Normal mode */+ − if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)+ − {+ − husart->RxXferCount = 0x00U;+ − + − /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* Disable the DMA transfer for the Transmit/receiver request by clearing the DMAT/DMAR bit+ − in the USART CR3 register */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);+ − + − husart->State= HAL_USART_STATE_READY;+ − + − /* The USART state is HAL_USART_STATE_BUSY_RX */+ − if(husart->State == HAL_USART_STATE_BUSY_RX)+ − {+ − HAL_USART_RxCpltCallback(husart);+ − }+ − /* The USART state is HAL_USART_STATE_BUSY_TX_RX */+ − else+ − {+ − HAL_USART_TxRxCpltCallback(husart);+ − }+ − }+ − /* DMA circular mode */+ − else+ − {+ − if(husart->State == HAL_USART_STATE_BUSY_RX)+ − {+ − HAL_USART_RxCpltCallback(husart);+ − }+ − /* The USART state is HAL_USART_STATE_BUSY_TX_RX */+ − else+ − {+ − HAL_USART_TxRxCpltCallback(husart);+ − }+ − }+ − }+ − + − /**+ − * @brief DMA USART 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 USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)+ − {+ − USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;+ − + − HAL_USART_RxHalfCpltCallback(husart);+ − }+ − + − /**+ − * @brief DMA USART communication error callback.+ − * @param hdma DMA handle+ − * @retval None+ − */+ − static void USART_DMAError(DMA_HandleTypeDef *hdma)+ − {+ − uint32_t dmarequest = 0x00U;+ − USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;+ − husart->RxXferCount = 0x00U;+ − husart->TxXferCount = 0x00U;+ − + − /* Stop USART DMA Tx request if ongoing */+ − dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT);+ − if((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)+ − {+ − USART_EndTxTransfer(husart);+ − }+ − + − /* Stop USART DMA Rx request if ongoing */+ − dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);+ − if((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)+ − {+ − USART_EndRxTransfer(husart);+ − }+ − + − husart->ErrorCode |= HAL_USART_ERROR_DMA;+ − husart->State= HAL_USART_STATE_READY;+ − + − HAL_USART_ErrorCallback(husart);+ − }+ − + − /**+ − * @brief This function handles USART Communication Timeout.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @param Flag specifies the USART flag to check.+ − * @param Status The new Flag status (SET or RESET).+ − * @param Tickstart Tick start value.+ − * @param Timeout Timeout duration.+ − * @retval HAL status+ − */+ − static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)+ − {+ − /* Wait until flag is set */+ − while((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status)+ − {+ − /* Check for the Timeout */+ − if(Timeout != HAL_MAX_DELAY)+ − {+ − if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout))+ − {+ − /* Disable the USART Transmit Complete Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);+ − + − /* Disable the USART RXNE Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);+ − + − /* Disable the USART Parity Error Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);+ − + − /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − husart->State= HAL_USART_STATE_READY;+ − + − /* Process Unlocked */+ − __HAL_UNLOCK(husart);+ − + − return HAL_TIMEOUT;+ − }+ − }+ − }+ − return HAL_OK;+ − }+ − + − /**+ − * @brief End ongoing Tx transfer on USART peripheral (following error detection or Transmit completion).+ − * @param husart USART handle.+ − * @retval None+ − */+ − static void USART_EndTxTransfer(USART_HandleTypeDef *husart)+ − {+ − /* Disable TXEIE and TCIE interrupts */+ − CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));+ − + − /* At end of Tx process, restore husart->State to Ready */+ − husart->State = HAL_USART_STATE_READY;+ − }+ − + − /**+ − * @brief End ongoing Rx transfer on USART peripheral (following error detection or Reception completion).+ − * @param husart USART handle.+ − * @retval None+ − */+ − static void USART_EndRxTransfer(USART_HandleTypeDef *husart)+ − {+ − /* Disable RXNE, PE and ERR interrupts */+ − CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − /* At end of Rx process, restore husart->State to Ready */+ − husart->State = HAL_USART_STATE_READY;+ − }+ − + − /**+ − * @brief DMA USART communication abort callback, when initiated by HAL services on Error+ − * (To be called at end of DMA Abort procedure following error occurrence).+ − * @param hdma DMA handle.+ − * @retval None+ − */+ − static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma)+ − {+ − USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;+ − husart->RxXferCount = 0x00U;+ − husart->TxXferCount = 0x00U;+ − + − HAL_USART_ErrorCallback(husart);+ − }+ − + − /**+ − * @brief DMA USART Tx communication abort callback, when initiated by user+ − * (To be called at end of DMA Tx Abort procedure following user abort request).+ − * @note When this callback is executed, User Abort complete call back is called only if no+ − * Abort still ongoing for Rx DMA Handle.+ − * @param hdma DMA handle.+ − * @retval None+ − */+ − static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)+ − {+ − USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;+ − + − husart->hdmatx->XferAbortCallback = NULL;+ − + − /* Check if an Abort process is still ongoing */+ − if(husart->hdmarx != NULL)+ − {+ − if(husart->hdmarx->XferAbortCallback != NULL)+ − {+ − return;+ − }+ − }+ − + − /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */+ − husart->TxXferCount = 0x00U;+ − husart->RxXferCount = 0x00U;+ − + − /* Reset errorCode */+ − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − + − /* Restore husart->State to Ready */+ − husart->State = HAL_USART_STATE_READY;+ − + − /* Call user Abort complete callback */+ − HAL_USART_AbortCpltCallback(husart);+ − }+ − + − /**+ − * @brief DMA USART Rx communication abort callback, when initiated by user+ − * (To be called at end of DMA Rx Abort procedure following user abort request).+ − * @note When this callback is executed, User Abort complete call back is called only if no+ − * Abort still ongoing for Tx DMA Handle.+ − * @param hdma DMA handle.+ − * @retval None+ − */+ − static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)+ − {+ − USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;+ − + − husart->hdmarx->XferAbortCallback = NULL;+ − + − /* Check if an Abort process is still ongoing */+ − if(husart->hdmatx != NULL)+ − {+ − if(husart->hdmatx->XferAbortCallback != NULL)+ − {+ − return;+ − }+ − }+ − + − /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */+ − husart->TxXferCount = 0x00U;+ − husart->RxXferCount = 0x00U;+ − + − /* Reset errorCode */+ − husart->ErrorCode = HAL_USART_ERROR_NONE;+ − + − /* Restore husart->State to Ready */+ − husart->State = HAL_USART_STATE_READY;+ − + − /* Call user Abort complete callback */+ − HAL_USART_AbortCpltCallback(husart);+ − }+ − + − /**+ − * @brief Simplex Send an amount of data in non-blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − * @note The USART errors are not managed to avoid the overrun error.+ − */+ − static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart)+ âˆâ€Ã¢â€žÂ¢ {+ − uint16_t* tmp;+ − + − if(husart->State == HAL_USART_STATE_BUSY_TX)+ − {+ − if(husart->Init.WordLength == USART_WORDLENGTH_9B)+ − {+ − tmp = (uint16_t*) husart->pTxBuffPtr;+ − husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − husart->pTxBuffPtr += 2U;+ − }+ − else+ − {+ − husart->pTxBuffPtr += 1U;+ − }+ − }+ − else+ − {+ − husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF);+ − }+ − + − if(--husart->TxXferCount == 0U)+ − {+ − /* Disable the USART Transmit data register empty Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);+ − + − /* Enable the USART Transmit Complete Interrupt */+ − SET_BIT(husart->Instance->CR1, USART_CR1_TCIE);+ − }+ − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Wraps up transmission in non blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart)+ − {+ − /* Disable the USART Transmit Complete Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_TCIE);+ − + − /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − husart->State = HAL_USART_STATE_READY;+ − + − HAL_USART_TxCpltCallback(husart);+ − + − return HAL_OK;+ − }+ − + − /**+ − * @brief Simplex Receive an amount of data in non-blocking mode.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart)+ − {+ − uint16_t* tmp;+ − if(husart->State == HAL_USART_STATE_BUSY_RX)+ − {+ − if(husart->Init.WordLength == USART_WORDLENGTH_9B)+ − {+ − tmp = (uint16_t*) husart->pRxBuffPtr;+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);+ − husart->pRxBuffPtr += 2U;+ − }+ − else+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);+ − husart->pRxBuffPtr += 1U;+ − }+ − if(--husart->RxXferCount != 0x00U)+ − {+ − /* Send dummy byte in order to generate the clock for the slave to send the next data */+ − husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);+ − }+ − }+ − else+ − {+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);+ − }+ − else+ − {+ − *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);+ − }+ − + − if(--husart->RxXferCount != 0x00U)+ − {+ − /* Send dummy byte in order to generate the clock for the slave to send the next data */+ − husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF);+ − }+ − }+ − + − if(husart->RxXferCount == 0U)+ − {+ − /* Disable the USART RXNE Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);+ − + − /* Disable the USART Parity Error Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);+ − + − /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − husart->State = HAL_USART_STATE_READY;+ − HAL_USART_RxCpltCallback(husart);+ − + − return HAL_OK;+ − }+ − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval HAL status+ − */+ − static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart)+ − {+ − uint16_t* tmp;+ − + − if(husart->State == HAL_USART_STATE_BUSY_TX_RX)+ − {+ − if(husart->TxXferCount != 0x00U)+ − {+ − if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET)+ − {+ − if(husart->Init.WordLength == USART_WORDLENGTH_9B)+ − {+ − tmp = (uint16_t*) husart->pTxBuffPtr;+ − husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − husart->pTxBuffPtr += 2U;+ − }+ − else+ − {+ − husart->pTxBuffPtr += 1U;+ − }+ − }+ − else+ − {+ − husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF);+ − }+ − husart->TxXferCount--;+ − + − /* Check the latest data transmitted */+ − if(husart->TxXferCount == 0U)+ − {+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);+ − }+ − }+ − }+ − + − if(husart->RxXferCount != 0x00U)+ − {+ − if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET)+ − {+ − if(husart->Init.WordLength == USART_WORDLENGTH_9B)+ − {+ − tmp = (uint16_t*) husart->pRxBuffPtr;+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);+ − husart->pRxBuffPtr += 2U;+ − }+ − else+ − {+ − *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);+ − husart->pRxBuffPtr += 1U;+ − }+ − }+ − else+ − {+ − if(husart->Init.Parity == USART_PARITY_NONE)+ − {+ − *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);+ − }+ − else+ − {+ − *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);+ − }+ − }+ − husart->RxXferCount--;+ − }+ − }+ − + − /* Check the latest data received */+ − if(husart->RxXferCount == 0U)+ − {+ − /* Disable the USART RXNE Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);+ − + − /* Disable the USART Parity Error Interrupt */+ − CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);+ − + − /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */+ − CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);+ − + − husart->State = HAL_USART_STATE_READY;+ − + − HAL_USART_TxRxCpltCallback(husart);+ − + − return HAL_OK;+ − }+ − + − return HAL_OK;+ − }+ − else+ − {+ − return HAL_BUSY;+ − }+ − }+ − + − /**+ − * @brief Configures the USART pferipheral.+ − * @param husart pointer to a USART_HandleTypeDef structure that contains+ − * the configuration information for the specified USART module.+ − * @retval None+ − */+ − static void USART_SetConfig(USART_HandleTypeDef *husart)+ − {+ − uint32_t tmpreg = 0x00U;+ − + − /* Check the parameters */+ − assert_param(IS_USART_INSTANCE(husart->Instance));+ − assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity));+ − assert_param(IS_USART_PHASE(husart->Init.CLKPhase));+ − assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit));+ − assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate));+ − assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength));+ − assert_param(IS_USART_STOPBITS(husart->Init.StopBits));+ − assert_param(IS_USART_PARITY(husart->Init.Parity));+ − assert_param(IS_USART_MODE(husart->Init.Mode));+ − + − /* The LBCL, CPOL and CPHA bits have to be selected when both the transmitter and the+ − receiver are disabled (TE=RE=0) to ensure that the clock pulses function correctly. */+ − CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));+ − + − /*---------------------------- USART CR2 Configuration ---------------------*/+ − tmpreg = husart->Instance->CR2;+ − /* Clear CLKEN, CPOL, CPHA and LBCL bits */+ − tmpreg &= (uint32_t)~((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP));+ − /* Configure the USART Clock, CPOL, CPHA and LastBit -----------------------*/+ − /* Set CPOL bit according to husart->Init.CLKPolarity value */+ − /* Set CPHA bit according to husart->Init.CLKPhase value */+ − /* Set LBCL bit according to husart->Init.CLKLastBit value */+ − /* Set Stop Bits: Set STOP[13:12] bits according to husart->Init.StopBits value */+ − tmpreg |= (uint32_t)(USART_CLOCK_ENABLE| husart->Init.CLKPolarity |+ − husart->Init.CLKPhase| husart->Init.CLKLastBit | husart->Init.StopBits);+ − /* Write to USART CR2 */+ − WRITE_REG(husart->Instance->CR2, (uint32_t)tmpreg);+ − + − /*-------------------------- USART CR1 Configuration -----------------------*/+ − tmpreg = husart->Instance->CR1;+ − + − /* Clear M, PCE, PS, TE, RE and OVER8 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 USART Word Length, Parity and mode:+ − Set the M bits according to husart->Init.WordLength value+ − Set PCE and PS bits according to husart->Init.Parity value+ − Set TE and RE bits according to husart->Init.Mode value+ − Force OVER8 bit to 1 in order to reach the max USART frequencies */+ − tmpreg |= (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8;+ − + − /* Write to USART CR1 */+ − WRITE_REG(husart->Instance->CR1, (uint32_t)tmpreg);+ − + − /*-------------------------- USART CR3 Configuration -----------------------*/+ − /* Clear CTSE and RTSE bits */+ − CLEAR_BIT(husart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE));+ − + − /*-------------------------- USART BRR Configuration -----------------------*/+ − #if defined(USART6) + − if((husart->Instance == USART1) || (husart->Instance == USART6))+ − {+ − husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate);+ − }+ − #else+ − if(husart->Instance == USART1)+ − {+ − husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate);+ − } + − #endif /* USART6 */ + − else+ − {+ − husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK1Freq(), husart->Init.BaudRate);+ − }+ − }+ − + − /**+ − * @}+ − */+ − + − #endif /* HAL_USART_MODULE_ENABLED */+ − /**+ − * @}+ − */+ − + − /**+ − * @}+ − */+ − + − /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/+ −
