| /** |
| ****************************************************************************** |
| * @file stm32f1xx_hal_uart.c |
| * @author MCD Application Team |
| * @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 the UART pins (TX as alternate function pull-up, RX as alternate function Input). |
| (##) 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 channel. |
| (+++) Enable the DMAx interface clock. |
| (+++) Configure the declared DMA handle structure with the required |
| Tx/Rx parameters. |
| (+++) Configure the DMA Tx/Rx channel. |
| (+++) 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 channel. |
| (+++) Configure the USARTx interrupt priority and enable the NVIC USART IRQ handle |
| (used for last byte sending completion detection in DMA non circular mode) |
| |
| (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware |
| flow control and Mode(Receiver/Transmitter) in the huart 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 |
| [..] |
| (@) Additionnal remark: 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), |
| the possible UART frame formats are as listed in the following table: |
| +-------------------------------------------------------------+ |
| | M bit | PCE bit | UART frame | |
| |---------------------|---------------------------------------| |
| | 0 | 0 | | SB | 8 bit data | STB | | |
| |---------|-----------|---------------------------------------| |
| | 0 | 1 | | SB | 7 bit data | PB | STB | | |
| |---------|-----------|---------------------------------------| |
| | 1 | 0 | | SB | 9 bit data | STB | | |
| |---------|-----------|---------------------------------------| |
| | 1 | 1 | | SB | 8 bit data | PB | STB | | |
| +-------------------------------------------------------------+ |
| ****************************************************************************** |
| * @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 "stm32f1xx_hal.h" |
| |
| /** @addtogroup STM32F1xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @defgroup UART UART |
| * @brief HAL UART module driver |
| * @{ |
| */ |
| #ifdef HAL_UART_MODULE_ENABLED |
| |
| /* Private typedef -----------------------------------------------------------*/ |
| /* Private define ------------------------------------------------------------*/ |
| /** @addtogroup UART_Private_Constants |
| * @{ |
| */ |
| /** |
| * @} |
| */ |
| /* Private macro -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private function prototypes -----------------------------------------------*/ |
| /** @addtogroup UART_Private_Functions |
| * @{ |
| */ |
| static void UART_EndTxTransfer(UART_HandleTypeDef *huart); |
| static void UART_EndRxTransfer(UART_HandleTypeDef *huart); |
| static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma); |
| static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma); |
| static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma); |
| static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma); |
| static void UART_DMAError(DMA_HandleTypeDef *hdma); |
| static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma); |
| static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma); |
| static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma); |
| static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma); |
| static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma); |
| 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 HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout); |
| static void UART_SetConfig (UART_HandleTypeDef *huart); |
| /** |
| * @} |
| */ |
| /* 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 manuals |
| (RM0008 for STM32F10Xxx MCUs and RM0041 for STM32F100xx MCUs)). |
| |
| @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 */ |
| 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)); |
| #if defined(USART_CR1_OVER8) |
| assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling)); |
| #endif /* USART_CR1_OVER8 */ |
| |
| if(huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| |
| /* Init the low level hardware */ |
| HAL_UART_MspInit(huart); |
| } |
| |
| huart->gState = 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.*/ |
| CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); |
| CLEAR_BIT(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->gState= HAL_UART_STATE_READY; |
| huart->RxState= 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_HALFDUPLEX_INSTANCE(huart->Instance)); |
| assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength)); |
| #if defined(USART_CR1_OVER8) |
| assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling)); |
| #endif /* USART_CR1_OVER8 */ |
| if(huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| /* Init the low level hardware */ |
| HAL_UART_MspInit(huart); |
| } |
| |
| huart->gState = 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.*/ |
| CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); |
| CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN)); |
| |
| /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */ |
| SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL); |
| |
| /* Enable the peripheral */ |
| __HAL_UART_ENABLE(huart); |
| |
| /* Initialize the UART state*/ |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState= HAL_UART_STATE_READY; |
| huart->RxState= 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 LIN UART instance */ |
| assert_param(IS_UART_LIN_INSTANCE(huart->Instance)); |
| /* Check the Break detection length parameter */ |
| assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength)); |
| assert_param(IS_UART_LIN_WORD_LENGTH(huart->Init.WordLength)); |
| #if defined(USART_CR1_OVER8) |
| assert_param(IS_UART_LIN_OVERSAMPLING(huart->Init.OverSampling)); |
| #endif /* USART_CR1_OVER8 */ |
| |
| if(huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| /* Init the low level hardware */ |
| HAL_UART_MspInit(huart); |
| } |
| |
| huart->gState = 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: |
| - CLKEN bits in the USART_CR2 register, |
| - SCEN and IREN bits in the USART_CR3 register.*/ |
| CLEAR_BIT(huart->Instance->CR2, USART_CR2_CLKEN); |
| CLEAR_BIT(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 */ |
| SET_BIT(huart->Instance->CR2, USART_CR2_LINEN); |
| |
| /* Set the USART LIN Break detection length. */ |
| MODIFY_REG(huart->Instance->CR2, USART_CR2_LBDL, BreakDetectLength); |
| |
| /* Enable the peripheral */ |
| __HAL_UART_ENABLE(huart); |
| |
| /* Initialize the UART state*/ |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState= HAL_UART_STATE_READY; |
| huart->RxState= 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 UART instance capabilities */ |
| assert_param(IS_UART_MULTIPROCESSOR_INSTANCE(huart->Instance)); |
| |
| /* Check the Address & wake up method parameters */ |
| assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod)); |
| assert_param(IS_UART_ADDRESS(Address)); |
| assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength)); |
| #if defined(USART_CR1_OVER8) |
| assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling)); |
| #endif /* USART_CR1_OVER8 */ |
| |
| if(huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| /* Init the low level hardware */ |
| HAL_UART_MspInit(huart); |
| } |
| |
| huart->gState = 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 */ |
| CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN)); |
| CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN)); |
| |
| /* Set the USART address node */ |
| MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, Address); |
| |
| /* Set the wake up method by setting the WAKE bit in the CR1 register */ |
| MODIFY_REG(huart->Instance->CR1, USART_CR1_WAKE, WakeUpMethod); |
| |
| /* Enable the peripheral */ |
| __HAL_UART_ENABLE(huart); |
| |
| /* Initialize the UART state */ |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = HAL_UART_STATE_READY; |
| huart->RxState = 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->gState = HAL_UART_STATE_BUSY; |
| |
| /* DeInit the low level hardware */ |
| HAL_UART_MspDeInit(huart); |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = HAL_UART_STATE_RESET; |
| huart->RxState = HAL_UART_STATE_RESET; |
| |
| /* Process Unlock */ |
| __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) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(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) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(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() |
| (++) HAL_UART_DMAPause() |
| (++) HAL_UART_DMAResume() |
| (++) HAL_UART_DMAStop() |
| |
| (#) A set of Transfer Complete Callbacks are provided in non blocking mode: |
| (++) HAL_UART_TxHalfCpltCallback() |
| (++) HAL_UART_TxCpltCallback() |
| (++) HAL_UART_RxHalfCpltCallback() |
| (++) 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 tickstart = 0U; |
| |
| /* Check that a Tx process is not already ongoing */ |
| if(huart->gState == HAL_UART_STATE_READY) |
| { |
| if((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = HAL_UART_STATE_BUSY_TX; |
| |
| /* Init tickstart for timeout managment */ |
| tickstart = HAL_GetTick(); |
| |
| huart->TxXferSize = Size; |
| huart->TxXferCount = Size; |
| while(huart->TxXferCount > 0U) |
| { |
| huart->TxXferCount--; |
| if(huart->Init.WordLength == UART_WORDLENGTH_9B) |
| { |
| if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, 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 +=2U; |
| } |
| else |
| { |
| pData +=1U; |
| } |
| } |
| else |
| { |
| if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| huart->Instance->DR = (*pData++ & (uint8_t)0xFF); |
| } |
| } |
| |
| if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| |
| /* At end of Tx process, restore huart->gState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(huart); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive 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 tickstart = 0U; |
| |
| /* Check that a Rx process is not already ongoing */ |
| if(huart->RxState == HAL_UART_STATE_READY) |
| { |
| if((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->RxState = HAL_UART_STATE_BUSY_RX; |
| |
| /* Init tickstart for timeout managment */ |
| tickstart = HAL_GetTick(); |
| |
| huart->RxXferSize = Size; |
| huart->RxXferCount = Size; |
| |
| /* Check the remain data to be received */ |
| while(huart->RxXferCount > 0U) |
| { |
| huart->RxXferCount--; |
| if(huart->Init.WordLength == UART_WORDLENGTH_9B) |
| { |
| if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, 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 +=2U; |
| } |
| else |
| { |
| *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x00FF); |
| pData +=1U; |
| } |
| |
| } |
| else |
| { |
| if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, 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); |
| } |
| |
| } |
| } |
| |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = 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) |
| { |
| /* Check that a Tx process is not already ongoing */ |
| if(huart->gState == HAL_UART_STATE_READY) |
| { |
| if((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->pTxBuffPtr = pData; |
| huart->TxXferSize = Size; |
| huart->TxXferCount = Size; |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = HAL_UART_STATE_BUSY_TX; |
| |
| /* 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) |
| { |
| /* Check that a Rx process is not already ongoing */ |
| if(huart->RxState == HAL_UART_STATE_READY) |
| { |
| if((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->pRxBuffPtr = pData; |
| huart->RxXferSize = Size; |
| huart->RxXferCount = Size; |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->RxState = HAL_UART_STATE_BUSY_RX; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(huart); |
| |
| /* 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); |
| |
| /* 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; |
| |
| /* Check that a Tx process is not already ongoing */ |
| if(huart->gState == HAL_UART_STATE_READY) |
| { |
| if((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->pTxBuffPtr = pData; |
| huart->TxXferSize = Size; |
| huart->TxXferCount = Size; |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = 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; |
| |
| /* Set the DMA abort callback */ |
| huart->hdmatx->XferAbortCallback = NULL; |
| |
| /* Enable the UART transmit DMA channel */ |
| 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); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(huart); |
| |
| /* Enable the DMA transfer for transmit request by setting the DMAT bit |
| in the UART CR3 register */ |
| SET_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| 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; |
| |
| /* Check that a Rx process is not already ongoing */ |
| if(huart->RxState == HAL_UART_STATE_READY) |
| { |
| if((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->pRxBuffPtr = pData; |
| huart->RxXferSize = Size; |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->RxState = 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; |
| |
| /* Set the DMA abort callback */ |
| huart->hdmarx->XferAbortCallback = NULL; |
| |
| /* Enable the DMA channel */ |
| tmp = (uint32_t*)&pData; |
| HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->DR, *(uint32_t*)tmp, Size); |
| |
| /* Clear the Overrun flag just before enabling the DMA Rx request: can be mandatory for the second transfer */ |
| __HAL_UART_CLEAR_OREFLAG(huart); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(huart); |
| |
| /* Enable the UART Parity Error Interrupt */ |
| SET_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| |
| /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */ |
| SET_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Enable the DMA transfer for the receiver request by setting the DMAR bit |
| in the UART CR3 register */ |
| SET_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| 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) |
| { |
| uint32_t dmarequest = 0x00U; |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT); |
| if((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest) |
| { |
| /* Disable the UART DMA Tx request */ |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| } |
| |
| dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR); |
| if((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest) |
| { |
| /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the UART DMA Rx request */ |
| CLEAR_BIT(huart->Instance->CR3, 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->gState == HAL_UART_STATE_BUSY_TX) |
| { |
| /* Enable the UART DMA Tx request */ |
| SET_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| } |
| |
| if(huart->RxState == HAL_UART_STATE_BUSY_RX) |
| { |
| /* Clear the Overrun flag before resuming the Rx transfer*/ |
| __HAL_UART_CLEAR_OREFLAG(huart); |
| |
| /* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| SET_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| SET_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Enable the UART DMA Rx request */ |
| SET_BIT(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) |
| { |
| uint32_t dmarequest = 0x00U; |
| /* 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() |
| */ |
| |
| /* Stop UART DMA Tx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT); |
| if((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx channel */ |
| if(huart->hdmatx != NULL) |
| { |
| HAL_DMA_Abort(huart->hdmatx); |
| } |
| UART_EndTxTransfer(huart); |
| } |
| |
| /* Stop UART DMA Rx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR); |
| if((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx channel */ |
| if(huart->hdmarx != NULL) |
| { |
| HAL_DMA_Abort(huart->hdmarx); |
| } |
| UART_EndRxTransfer(huart); |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing transfers (blocking mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts |
| * - 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_UART_Abort(UART_HandleTypeDef *huart) |
| { |
| /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE)); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the UART DMA Tx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx channel: use blocking DMA Abort API (no callback) */ |
| if(huart->hdmatx != NULL) |
| { |
| /* Set the UART DMA Abort callback to Null. |
| No call back execution at end of DMA abort procedure */ |
| huart->hdmatx->XferAbortCallback = NULL; |
| |
| HAL_DMA_Abort(huart->hdmatx); |
| } |
| } |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx channel: use blocking DMA Abort API (no callback) */ |
| if(huart->hdmarx != NULL) |
| { |
| /* Set the UART DMA Abort callback to Null. |
| No call back execution at end of DMA abort procedure */ |
| huart->hdmarx->XferAbortCallback = NULL; |
| |
| HAL_DMA_Abort(huart->hdmarx); |
| } |
| } |
| |
| /* Reset Tx and Rx transfer counters */ |
| huart->TxXferCount = 0x00U; |
| huart->RxXferCount = 0x00U; |
| |
| /* Reset ErrorCode */ |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| |
| /* Restore huart->RxState and huart->gState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| huart->gState = HAL_UART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing Transmit transfer (blocking mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts |
| * - 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_UART_AbortTransmit(UART_HandleTypeDef *huart) |
| { |
| /* Disable TXEIE and TCIE interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE)); |
| |
| /* Disable the UART DMA Tx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */ |
| if(huart->hdmatx != NULL) |
| { |
| /* Set the UART DMA Abort callback to Null. |
| No call back execution at end of DMA abort procedure */ |
| huart->hdmatx->XferAbortCallback = NULL; |
| |
| HAL_DMA_Abort(huart->hdmatx); |
| } |
| } |
| |
| /* Reset Tx transfer counter */ |
| huart->TxXferCount = 0x00U; |
| |
| /* Restore huart->gState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing Receive transfer (blocking mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts |
| * - 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_UART_AbortReceive(UART_HandleTypeDef *huart) |
| { |
| /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */ |
| if(huart->hdmarx != NULL) |
| { |
| /* Set the UART DMA Abort callback to Null. |
| No call back execution at end of DMA abort procedure */ |
| huart->hdmarx->XferAbortCallback = NULL; |
| |
| HAL_DMA_Abort(huart->hdmarx); |
| } |
| } |
| |
| /* Reset Rx transfer counter */ |
| huart->RxXferCount = 0x00U; |
| |
| /* Restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing transfers (Interrupt mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts |
| * - 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_UART_Abort_IT(UART_HandleTypeDef *huart) |
| { |
| uint32_t AbortCplt = 0x01U; |
| |
| /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE)); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised |
| before any call to DMA Abort functions */ |
| /* DMA Tx Handle is valid */ |
| if(huart->hdmatx != NULL) |
| { |
| /* Set DMA Abort Complete callback if UART DMA Tx request if enabled. |
| Otherwise, set it to NULL */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback; |
| } |
| else |
| { |
| huart->hdmatx->XferAbortCallback = NULL; |
| } |
| } |
| /* DMA Rx Handle is valid */ |
| if(huart->hdmarx != NULL) |
| { |
| /* Set DMA Abort Complete callback if UART DMA Rx request if enabled. |
| Otherwise, set it to NULL */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback; |
| } |
| else |
| { |
| huart->hdmarx->XferAbortCallback = NULL; |
| } |
| } |
| |
| /* Disable the UART DMA Tx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| /* Disable DMA Tx at UART level */ |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */ |
| if(huart->hdmatx != NULL) |
| { |
| /* UART Tx DMA Abort callback has already been initialised : |
| will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */ |
| |
| /* Abort DMA TX */ |
| if(HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK) |
| { |
| huart->hdmatx->XferAbortCallback = NULL; |
| } |
| else |
| { |
| AbortCplt = 0x00U; |
| } |
| } |
| } |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */ |
| if(huart->hdmarx != NULL) |
| { |
| /* UART Rx DMA Abort callback has already been initialised : |
| will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */ |
| |
| /* Abort DMA RX */ |
| if(HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK) |
| { |
| huart->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 */ |
| huart->TxXferCount = 0x00U; |
| huart->RxXferCount = 0x00U; |
| |
| /* Reset ErrorCode */ |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| |
| /* Restore huart->gState and huart->RxState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| HAL_UART_AbortCpltCallback(huart); |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing Transmit transfer (Interrupt mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts |
| * - 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_UART_AbortTransmit_IT(UART_HandleTypeDef *huart) |
| { |
| /* Disable TXEIE and TCIE interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE)); |
| |
| /* Disable the UART DMA Tx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */ |
| if(huart->hdmatx != NULL) |
| { |
| /* Set the UART DMA Abort callback : |
| will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */ |
| huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback; |
| |
| /* Abort DMA TX */ |
| if(HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK) |
| { |
| /* Call Directly huart->hdmatx->XferAbortCallback function in case of error */ |
| huart->hdmatx->XferAbortCallback(huart->hdmatx); |
| } |
| } |
| else |
| { |
| /* Reset Tx transfer counter */ |
| huart->TxXferCount = 0x00U; |
| |
| /* Restore huart->gState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| HAL_UART_AbortTransmitCpltCallback(huart); |
| } |
| } |
| else |
| { |
| /* Reset Tx transfer counter */ |
| huart->TxXferCount = 0x00U; |
| |
| /* Restore huart->gState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| HAL_UART_AbortTransmitCpltCallback(huart); |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing Receive transfer (Interrupt mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts |
| * - 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_UART_AbortReceive_IT(UART_HandleTypeDef *huart) |
| { |
| /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */ |
| if(huart->hdmarx != NULL) |
| { |
| /* Set the UART DMA Abort callback : |
| will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */ |
| huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback; |
| |
| /* Abort DMA RX */ |
| if(HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK) |
| { |
| /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */ |
| huart->hdmarx->XferAbortCallback(huart->hdmarx); |
| } |
| } |
| else |
| { |
| /* Reset Rx transfer counter */ |
| huart->RxXferCount = 0x00U; |
| |
| /* Restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| HAL_UART_AbortReceiveCpltCallback(huart); |
| } |
| } |
| else |
| { |
| /* Reset Rx transfer counter */ |
| huart->RxXferCount = 0x00U; |
| |
| /* Restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| HAL_UART_AbortReceiveCpltCallback(huart); |
| } |
| |
| 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 isrflags = READ_REG(huart->Instance->SR); |
| uint32_t cr1its = READ_REG(huart->Instance->CR1); |
| uint32_t cr3its = READ_REG(huart->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) |
| { |
| /* UART in mode Receiver -------------------------------------------------*/ |
| if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) |
| { |
| UART_Receive_IT(huart); |
| return; |
| } |
| } |
| |
| /* If some errors occur */ |
| if((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET))) |
| { |
| /* UART parity error interrupt occurred ----------------------------------*/ |
| if(((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET)) |
| { |
| huart->ErrorCode |= HAL_UART_ERROR_PE; |
| } |
| |
| /* UART noise error interrupt occurred -----------------------------------*/ |
| if(((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) |
| { |
| huart->ErrorCode |= HAL_UART_ERROR_NE; |
| } |
| |
| /* UART frame error interrupt occurred -----------------------------------*/ |
| if(((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) |
| { |
| huart->ErrorCode |= HAL_UART_ERROR_FE; |
| } |
| |
| /* UART Over-Run interrupt occurred --------------------------------------*/ |
| if(((isrflags & USART_SR_ORE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) |
| { |
| huart->ErrorCode |= HAL_UART_ERROR_ORE; |
| } |
| |
| /* Call UART Error Call back function if need be --------------------------*/ |
| if(huart->ErrorCode != HAL_UART_ERROR_NONE) |
| { |
| /* UART in mode Receiver -----------------------------------------------*/ |
| if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) |
| { |
| UART_Receive_IT(huart); |
| } |
| |
| /* If Overrun error occurs, or if any error occurs in DMA mode reception, |
| consider error as blocking */ |
| dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR); |
| if(((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) || dmarequest) |
| { |
| /* Blocking error : transfer is aborted |
| Set the UART state ready to be able to start again the process, |
| Disable Rx Interrupts, and disable Rx DMA request, if ongoing */ |
| UART_EndRxTransfer(huart); |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx channel */ |
| if(huart->hdmarx != NULL) |
| { |
| /* Set the UART DMA Abort callback : |
| will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */ |
| huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError; |
| if(HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK) |
| { |
| /* Call Directly XferAbortCallback function in case of error */ |
| huart->hdmarx->XferAbortCallback(huart->hdmarx); |
| } |
| } |
| else |
| { |
| /* Call user error callback */ |
| HAL_UART_ErrorCallback(huart); |
| } |
| } |
| else |
| { |
| /* Call user error callback */ |
| HAL_UART_ErrorCallback(huart); |
| } |
| } |
| else |
| { |
| /* Non Blocking error : transfer could go on. |
| Error is notified to user through user error callback */ |
| HAL_UART_ErrorCallback(huart); |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| } |
| } |
| return; |
| } /* End if some error occurs */ |
| |
| /* UART in mode Transmitter ------------------------------------------------*/ |
| if(((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET)) |
| { |
| UART_Transmit_IT(huart); |
| return; |
| } |
| |
| /* UART in mode Transmitter end --------------------------------------------*/ |
| if(((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET)) |
| { |
| UART_EndTransmit_IT(huart); |
| return; |
| } |
| } |
| |
| /** |
| * @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) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(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) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| /* NOTE: This function Should not be modified, when the callback is needed, |
| the HAL_UART_TxHalfCpltCallback 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) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| /* NOTE: This function Should not be modified, when the callback is needed, |
| the HAL_UART_RxCpltCallback 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) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| /* NOTE: This function Should not be modified, when the callback is needed, |
| the HAL_UART_RxHalfCpltCallback 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) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| /* NOTE: This function Should not be modified, when the callback is needed, |
| the HAL_UART_ErrorCallback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief UART Abort Complete callback. |
| * @param huart UART handle. |
| * @retval None |
| */ |
| __weak void HAL_UART_AbortCpltCallback (UART_HandleTypeDef *huart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| |
| /* NOTE : This function should not be modified, when the callback is needed, |
| the HAL_UART_AbortCpltCallback can be implemented in the user file. |
| */ |
| } |
| /** |
| * @brief UART Abort Complete callback. |
| * @param huart UART handle. |
| * @retval None |
| */ |
| __weak void HAL_UART_AbortTransmitCpltCallback (UART_HandleTypeDef *huart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| |
| /* NOTE : This function should not be modified, when the callback is needed, |
| the HAL_UART_AbortTransmitCpltCallback can be implemented in the user file. |
| */ |
| } |
| |
| /** |
| * @brief UART Abort Receive Complete callback. |
| * @param huart UART handle. |
| * @retval None |
| */ |
| __weak void HAL_UART_AbortReceiveCpltCallback (UART_HandleTypeDef *huart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| |
| /* NOTE : This function should not be modified, when the callback is needed, |
| the HAL_UART_AbortReceiveCpltCallback can 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. |
| (+) HAL_HalfDuplex_EnableTransmitter() API to enable the UART transmitter and disables the UART receiver in Half Duplex mode |
| (+) HAL_HalfDuplex_EnableReceiver() API to enable the UART receiver and disables the UART transmitter in Half Duplex mode |
| |
| @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->gState = HAL_UART_STATE_BUSY; |
| |
| /* Send break characters */ |
| SET_BIT(huart->Instance->CR1, USART_CR1_SBK); |
| |
| huart->gState = 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->gState = HAL_UART_STATE_BUSY; |
| |
| /* Enable the USART mute mode by setting the RWU bit in the CR1 register */ |
| SET_BIT(huart->Instance->CR1, USART_CR1_RWU); |
| |
| huart->gState = 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->gState = HAL_UART_STATE_BUSY; |
| |
| /* Disable the USART mute mode by clearing the RWU bit in the CR1 register */ |
| CLEAR_BIT(huart->Instance->CR1, USART_CR1_RWU); |
| |
| huart->gState = 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 = 0x00U; |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->gState = 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 */ |
| WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg); |
| |
| huart->gState = 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 = 0x00U; |
| |
| /* Process Locked */ |
| __HAL_LOCK(huart); |
| |
| huart->gState = 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 */ |
| WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg); |
| |
| huart->gState = 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) |
| { |
| uint32_t temp1= 0x00U, temp2 = 0x00U; |
| temp1 = huart->gState; |
| temp2 = huart->RxState; |
| |
| return (HAL_UART_StateTypeDef)(temp1 | temp2); |
| } |
| |
| /** |
| * @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->CCR & DMA_CCR_CIRC) == 0U) |
| { |
| huart->TxXferCount = 0U; |
| |
| /* Disable the DMA transfer for transmit request by setting the DMAT bit |
| in the UART CR3 register */ |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Enable the UART Transmit Complete Interrupt */ |
| SET_BIT(huart->Instance->CR1, USART_CR1_TCIE); |
| |
| } |
| /* 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->CCR & DMA_CCR_CIRC) == 0U) |
| { |
| huart->RxXferCount = 0U; |
| |
| /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the DMA transfer for the receiver request by setting the DMAR bit |
| in the UART CR3 register */ |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = 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) |
| { |
| uint32_t dmarequest = 0x00U; |
| UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
| |
| /* Stop UART DMA Tx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT); |
| if((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest) |
| { |
| huart->TxXferCount = 0U; |
| UART_EndTxTransfer(huart); |
| } |
| |
| /* Stop UART DMA Rx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR); |
| if((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest) |
| { |
| huart->RxXferCount = 0U; |
| UART_EndRxTransfer(huart); |
| } |
| |
| 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 Tickstart Tick start value |
| * @param Timeout: Timeout duration |
| * @retval HAL status |
| */ |
| static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout) |
| { |
| /* Wait until flag is set */ |
| while((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status) |
| { |
| /* Check for the Timeout */ |
| if(Timeout != HAL_MAX_DELAY) |
| { |
| if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout)) |
| { |
| /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE)); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| huart->gState = HAL_UART_STATE_READY; |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(huart); |
| |
| return HAL_TIMEOUT; |
| } |
| } |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief End ongoing Tx transfer on UART peripheral (following error detection or Transmit completion). |
| * @param huart: UART handle. |
| * @retval None |
| */ |
| static void UART_EndTxTransfer(UART_HandleTypeDef *huart) |
| { |
| /* Disable TXEIE and TCIE interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE)); |
| |
| /* At end of Tx process, restore huart->gState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| } |
| |
| /** |
| * @brief End ongoing Rx transfer on UART peripheral (following error detection or Reception completion). |
| * @param huart: UART handle. |
| * @retval None |
| */ |
| static void UART_EndRxTransfer(UART_HandleTypeDef *huart) |
| { |
| /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| } |
| |
| /** |
| * @brief DMA UART 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 UART_DMAAbortOnError(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
| huart->RxXferCount = 0x00U; |
| huart->TxXferCount = 0x00U; |
| |
| HAL_UART_ErrorCallback(huart); |
| } |
| |
| /** |
| * @brief DMA UART 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 UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
| |
| huart->hdmatx->XferAbortCallback = NULL; |
| |
| /* Check if an Abort process is still ongoing */ |
| if(huart->hdmarx != NULL) |
| { |
| if(huart->hdmarx->XferAbortCallback != NULL) |
| { |
| return; |
| } |
| } |
| |
| /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */ |
| huart->TxXferCount = 0x00U; |
| huart->RxXferCount = 0x00U; |
| |
| /* Reset ErrorCode */ |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| |
| /* Restore huart->gState and huart->RxState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* Call user Abort complete callback */ |
| HAL_UART_AbortCpltCallback(huart); |
| } |
| |
| /** |
| * @brief DMA UART 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 UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
| |
| huart->hdmarx->XferAbortCallback = NULL; |
| |
| /* Check if an Abort process is still ongoing */ |
| if(huart->hdmatx != NULL) |
| { |
| if(huart->hdmatx->XferAbortCallback != NULL) |
| { |
| return; |
| } |
| } |
| |
| /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */ |
| huart->TxXferCount = 0x00U; |
| huart->RxXferCount = 0x00U; |
| |
| /* Reset ErrorCode */ |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| |
| /* Restore huart->gState and huart->RxState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* Call user Abort complete callback */ |
| HAL_UART_AbortCpltCallback(huart); |
| } |
| |
| /** |
| * @brief DMA UART Tx communication abort callback, when initiated by user by a call to |
| * HAL_UART_AbortTransmit_IT API (Abort only Tx transfer) |
| * (This callback is executed at end of DMA Tx Abort procedure following user abort request, |
| * and leads to user Tx Abort Complete callback execution). |
| * @param hdma DMA handle. |
| * @retval None |
| */ |
| static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
| |
| huart->TxXferCount = 0x00U; |
| |
| /* Restore huart->gState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| |
| /* Call user Abort complete callback */ |
| HAL_UART_AbortTransmitCpltCallback(huart); |
| } |
| |
| /** |
| * @brief DMA UART Rx communication abort callback, when initiated by user by a call to |
| * HAL_UART_AbortReceive_IT API (Abort only Rx transfer) |
| * (This callback is executed at end of DMA Rx Abort procedure following user abort request, |
| * and leads to user Rx Abort Complete callback execution). |
| * @param hdma DMA handle. |
| * @retval None |
| */ |
| static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; |
| |
| huart->RxXferCount = 0x00U; |
| |
| /* Restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* Call user Abort complete callback */ |
| HAL_UART_AbortReceiveCpltCallback(huart); |
| } |
| |
| /** |
| * @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; |
| |
| /* Check that a Tx process is ongoing */ |
| if(huart->gState == HAL_UART_STATE_BUSY_TX) |
| { |
| 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 += 2U; |
| } |
| else |
| { |
| huart->pTxBuffPtr += 1U; |
| } |
| } |
| else |
| { |
| huart->Instance->DR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF); |
| } |
| |
| if(--huart->TxXferCount == 0U) |
| { |
| /* 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); |
| |
| /* Tx process is ended, restore huart->gState to Ready */ |
| huart->gState = 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; |
| |
| /* Check that a Rx process is ongoing */ |
| if(huart->RxState == HAL_UART_STATE_BUSY_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 += 2U; |
| } |
| else |
| { |
| *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x00FF); |
| huart->pRxBuffPtr += 1U; |
| } |
| } |
| 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 == 0U) |
| { |
| /* Disable the IRDA Data Register not empty Interrupt */ |
| __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE); |
| |
| /* 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); |
| |
| /* Rx process is completed, restore huart->RxState to Ready */ |
| huart->RxState = 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 = 0x00U; |
| |
| /* 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)); |
| |
| /*------- UART-associated USART registers setting : CR2 Configuration ------*/ |
| /* Configure the UART Stop Bits: Set STOP[13:12] bits according |
| * to huart->Init.StopBits value */ |
| MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits); |
| |
| /*------- UART-associated USART registers setting : CR1 Configuration ------*/ |
| /* 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 */ |
| |
| #if defined(USART_CR1_OVER8) |
| tmpreg |= (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling; |
| MODIFY_REG(huart->Instance->CR1, |
| (uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8), |
| tmpreg); |
| #else |
| tmpreg |= (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode; |
| MODIFY_REG(huart->Instance->CR1, |
| (uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE), |
| tmpreg); |
| #endif /* USART_CR1_OVER8 */ |
| |
| /*------- UART-associated USART registers setting : CR3 Configuration ------*/ |
| /* Configure the UART HFC: Set CTSE and RTSE bits according to huart->Init.HwFlowCtl value */ |
| MODIFY_REG(huart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE), huart->Init.HwFlowCtl); |
| |
| #if defined(USART_CR1_OVER8) |
| /* Check the Over Sampling */ |
| if(huart->Init.OverSampling == UART_OVERSAMPLING_8) |
| { |
| /*-------------------------- USART BRR Configuration ---------------------*/ |
| if(huart->Instance == USART1) |
| { |
| 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->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate); |
| } |
| else |
| { |
| huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate); |
| } |
| } |
| #else |
| /*-------------------------- USART BRR Configuration ---------------------*/ |
| if(huart->Instance == USART1) |
| { |
| 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 /* USART_CR1_OVER8 */ |
| } |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* HAL_UART_MODULE_ENABLED */ |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |