| /** |
| ****************************************************************************** |
| * @file stm32f2xx_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 Peripheral (UART). |
| * + Initialization and de-initialization functions |
| * + IO operation functions |
| * + Peripheral Control functions |
| * + Peripheral State and Errors functions |
| * |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2016 STMicroelectronics. |
| * All rights reserved. |
| * |
| * This software is licensed under terms that can be found in the LICENSE file |
| * in the root directory of this software component. |
| * If no LICENSE file comes with this software, it is provided AS-IS. |
| * |
| ****************************************************************************** |
| @verbatim |
| ============================================================================== |
| ##### How to use this driver ##### |
| ============================================================================== |
| [..] |
| The UART HAL driver can be used as follows: |
| |
| (#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart). |
| (#) 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 TX/RX pins as alternate function pull-up. |
| (##) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT() |
| and HAL_UART_Receive_IT() APIs): |
| (+++) Configure the USARTx interrupt priority. |
| (+++) Enable the NVIC USART IRQ handle. |
| (##) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA() |
| and HAL_UART_Receive_DMA() APIs): |
| (+++) Declare a DMA handle structure for the Tx/Rx stream. |
| (+++) Enable the DMAx interface clock. |
| (+++) Configure the declared DMA handle structure with the required |
| Tx/Rx parameters. |
| (+++) Configure the DMA Tx/Rx stream. |
| (+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle. |
| (+++) Configure the priority and enable the NVIC for the transfer complete |
| interrupt on the DMA Tx/Rx stream. |
| (+++) 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. |
| |
| ##### Callback registration ##### |
| ================================== |
| |
| [..] |
| The compilation define USE_HAL_UART_REGISTER_CALLBACKS when set to 1 |
| allows the user to configure dynamically the driver callbacks. |
| |
| [..] |
| Use Function HAL_UART_RegisterCallback() to register a user callback. |
| Function HAL_UART_RegisterCallback() allows to register following callbacks: |
| (+) TxHalfCpltCallback : Tx Half Complete Callback. |
| (+) TxCpltCallback : Tx Complete Callback. |
| (+) RxHalfCpltCallback : Rx Half Complete Callback. |
| (+) RxCpltCallback : Rx Complete Callback. |
| (+) ErrorCallback : Error Callback. |
| (+) AbortCpltCallback : Abort Complete Callback. |
| (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback. |
| (+) AbortReceiveCpltCallback : Abort Receive Complete Callback. |
| (+) MspInitCallback : UART MspInit. |
| (+) MspDeInitCallback : UART MspDeInit. |
| This function takes as parameters the HAL peripheral handle, the Callback ID |
| and a pointer to the user callback function. |
| |
| [..] |
| Use function HAL_UART_UnRegisterCallback() to reset a callback to the default |
| weak (surcharged) function. |
| HAL_UART_UnRegisterCallback() takes as parameters the HAL peripheral handle, |
| and the Callback ID. |
| This function allows to reset following callbacks: |
| (+) TxHalfCpltCallback : Tx Half Complete Callback. |
| (+) TxCpltCallback : Tx Complete Callback. |
| (+) RxHalfCpltCallback : Rx Half Complete Callback. |
| (+) RxCpltCallback : Rx Complete Callback. |
| (+) ErrorCallback : Error Callback. |
| (+) AbortCpltCallback : Abort Complete Callback. |
| (+) AbortTransmitCpltCallback : Abort Transmit Complete Callback. |
| (+) AbortReceiveCpltCallback : Abort Receive Complete Callback. |
| (+) MspInitCallback : UART MspInit. |
| (+) MspDeInitCallback : UART MspDeInit. |
| |
| [..] |
| For specific callback RxEventCallback, use dedicated registration/reset functions: |
| respectively HAL_UART_RegisterRxEventCallback() , HAL_UART_UnRegisterRxEventCallback(). |
| |
| [..] |
| By default, after the HAL_UART_Init() and when the state is HAL_UART_STATE_RESET |
| all callbacks are set to the corresponding weak (surcharged) functions: |
| examples HAL_UART_TxCpltCallback(), HAL_UART_RxHalfCpltCallback(). |
| Exception done for MspInit and MspDeInit functions that are respectively |
| reset to the legacy weak (surcharged) functions in the HAL_UART_Init() |
| and HAL_UART_DeInit() only when these callbacks are null (not registered beforehand). |
| If not, MspInit or MspDeInit are not null, the HAL_UART_Init() and HAL_UART_DeInit() |
| keep and use the user MspInit/MspDeInit callbacks (registered beforehand). |
| |
| [..] |
| Callbacks can be registered/unregistered in HAL_UART_STATE_READY state only. |
| Exception done MspInit/MspDeInit that can be registered/unregistered |
| in HAL_UART_STATE_READY or HAL_UART_STATE_RESET state, thus registered (user) |
| MspInit/DeInit callbacks can be used during the Init/DeInit. |
| In that case first register the MspInit/MspDeInit user callbacks |
| using HAL_UART_RegisterCallback() before calling HAL_UART_DeInit() |
| or HAL_UART_Init() function. |
| |
| [..] |
| When The compilation define USE_HAL_UART_REGISTER_CALLBACKS is set to 0 or |
| not defined, the callback registration feature is not available |
| and weak (surcharged) callbacks are used. |
| |
| [..] |
| 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() |
| |
| |
| [..] This subsection also provides a set of additional functions providing enhanced reception |
| services to user. (For example, these functions allow application to handle use cases |
| where number of data to be received is unknown). |
| |
| (#) Compared to standard reception services which only consider number of received |
| data elements as reception completion criteria, these functions also consider additional events |
| as triggers for updating reception status to caller : |
| (+) Detection of inactivity period (RX line has not been active for a given period). |
| (++) RX inactivity detected by IDLE event, i.e. RX line has been in idle state (normally high state) |
| for 1 frame time, after last received byte. |
| |
| (#) There are two mode of transfer: |
| (+) Blocking mode: The reception is performed in polling mode, until either expected number of data is received, |
| or till IDLE event occurs. Reception is handled only during function execution. |
| When function exits, no data reception could occur. HAL status and number of actually received data elements, |
| are returned by function after finishing transfer. |
| (+) Non-Blocking mode: The reception 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 UART IRQ when using Interrupt mode or the DMA IRQ when using DMA mode. |
| The HAL_UARTEx_RxEventCallback() user callback will be executed during Receive process |
| The HAL_UART_ErrorCallback()user callback will be executed when a reception error is detected. |
| |
| (#) Blocking mode API: |
| (+) HAL_UARTEx_ReceiveToIdle() |
| |
| (#) Non-Blocking mode API with Interrupt: |
| (+) HAL_UARTEx_ReceiveToIdle_IT() |
| |
| (#) Non-Blocking mode API with DMA: |
| (+) HAL_UARTEx_ReceiveToIdle_DMA() |
| |
| |
| *** 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 |
| [..] |
| (@) Additional 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 | | |
| +-------------------------------------------------------------+ |
| ****************************************************************************** |
| */ |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32f2xx_hal.h" |
| |
| /** @addtogroup STM32F2xx_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 UART Private Functions |
| * @{ |
| */ |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| 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 manual (RM0033)). |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Initializes the UART mode according to the specified parameters in |
| * the UART_InitTypeDef and create the associated handle. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart) |
| { |
| /* Check the UART handle allocation */ |
| if (huart == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the parameters */ |
| if (huart->Init.HwFlowCtl != UART_HWCONTROL_NONE) |
| { |
| /* The hardware flow control is available only for USART1, USART2, USART3 and USART6 */ |
| assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance)); |
| assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl)); |
| } |
| else |
| { |
| assert_param(IS_UART_INSTANCE(huart->Instance)); |
| } |
| assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength)); |
| assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling)); |
| |
| if (huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| UART_InitCallbacksToDefault(huart); |
| |
| if (huart->MspInitCallback == NULL) |
| { |
| huart->MspInitCallback = HAL_UART_MspInit; |
| } |
| |
| /* Init the low level hardware */ |
| huart->MspInitCallback(huart); |
| #else |
| /* Init the low level hardware : GPIO, CLOCK */ |
| HAL_UART_MspInit(huart); |
| #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */ |
| } |
| |
| 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; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| 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)); |
| assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling)); |
| |
| if (huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| UART_InitCallbacksToDefault(huart); |
| |
| if (huart->MspInitCallback == NULL) |
| { |
| huart->MspInitCallback = HAL_UART_MspInit; |
| } |
| |
| /* Init the low level hardware */ |
| huart->MspInitCallback(huart); |
| #else |
| /* Init the low level hardware : GPIO, CLOCK */ |
| HAL_UART_MspInit(huart); |
| #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */ |
| } |
| |
| 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; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| 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)); |
| assert_param(IS_UART_LIN_OVERSAMPLING(huart->Init.OverSampling)); |
| |
| if (huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| UART_InitCallbacksToDefault(huart); |
| |
| if (huart->MspInitCallback == NULL) |
| { |
| huart->MspInitCallback = HAL_UART_MspInit; |
| } |
| |
| /* Init the low level hardware */ |
| huart->MspInitCallback(huart); |
| #else |
| /* Init the low level hardware : GPIO, CLOCK */ |
| HAL_UART_MspInit(huart); |
| #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */ |
| } |
| |
| 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, HDSEL 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. */ |
| CLEAR_BIT(huart->Instance->CR2, USART_CR2_LBDL); |
| SET_BIT(huart->Instance->CR2, 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; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Initializes the Multi-Processor mode according to the specified |
| * parameters in the UART_InitTypeDef and create the associated handle. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @param Address USART address |
| * @param WakeUpMethod specifies the USART wake-up method. |
| * This parameter can be one of the following values: |
| * @arg UART_WAKEUPMETHOD_IDLELINE: Wake-up by an idle line detection |
| * @arg UART_WAKEUPMETHOD_ADDRESSMARK: Wake-up by an address mark |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod) |
| { |
| /* Check the UART handle allocation */ |
| if (huart == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the parameters */ |
| assert_param(IS_UART_INSTANCE(huart->Instance)); |
| |
| /* 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)); |
| assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling)); |
| |
| if (huart->gState == HAL_UART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| huart->Lock = HAL_UNLOCKED; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| UART_InitCallbacksToDefault(huart); |
| |
| if (huart->MspInitCallback == NULL) |
| { |
| huart->MspInitCallback = HAL_UART_MspInit; |
| } |
| |
| /* Init the low level hardware */ |
| huart->MspInitCallback(huart); |
| #else |
| /* Init the low level hardware : GPIO, CLOCK */ |
| HAL_UART_MspInit(huart); |
| #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */ |
| } |
| |
| 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 */ |
| CLEAR_BIT(huart->Instance->CR2, USART_CR2_ADD); |
| SET_BIT(huart->Instance->CR2, Address); |
| |
| /* Set the wake up method by setting the WAKE bit in the CR1 register */ |
| CLEAR_BIT(huart->Instance->CR1, USART_CR1_WAKE); |
| SET_BIT(huart->Instance->CR1, 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; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| 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; |
| |
| /* Disable the Peripheral */ |
| __HAL_UART_DISABLE(huart); |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| if (huart->MspDeInitCallback == NULL) |
| { |
| huart->MspDeInitCallback = HAL_UART_MspDeInit; |
| } |
| /* DeInit the low level hardware */ |
| huart->MspDeInitCallback(huart); |
| #else |
| /* DeInit the low level hardware */ |
| HAL_UART_MspDeInit(huart); |
| #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */ |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = HAL_UART_STATE_RESET; |
| huart->RxState = HAL_UART_STATE_RESET; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| /* 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 |
| */ |
| } |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /** |
| * @brief Register a User UART Callback |
| * To be used instead of the weak predefined callback |
| * @note The HAL_UART_RegisterCallback() may be called before HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init(), |
| * HAL_MultiProcessor_Init() to register callbacks for HAL_UART_MSPINIT_CB_ID and HAL_UART_MSPDEINIT_CB_ID |
| * @param huart uart handle |
| * @param CallbackID ID of the callback to be registered |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID |
| * @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID |
| * @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID |
| * @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID |
| * @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID |
| * @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID |
| * @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID |
| * @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID |
| * @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID |
| * @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID |
| * @param pCallback pointer to the Callback function |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_RegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID, |
| pUART_CallbackTypeDef pCallback) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| if (pCallback == NULL) |
| { |
| /* Update the error code */ |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| return HAL_ERROR; |
| } |
| |
| if (huart->gState == HAL_UART_STATE_READY) |
| { |
| switch (CallbackID) |
| { |
| case HAL_UART_TX_HALFCOMPLETE_CB_ID : |
| huart->TxHalfCpltCallback = pCallback; |
| break; |
| |
| case HAL_UART_TX_COMPLETE_CB_ID : |
| huart->TxCpltCallback = pCallback; |
| break; |
| |
| case HAL_UART_RX_HALFCOMPLETE_CB_ID : |
| huart->RxHalfCpltCallback = pCallback; |
| break; |
| |
| case HAL_UART_RX_COMPLETE_CB_ID : |
| huart->RxCpltCallback = pCallback; |
| break; |
| |
| case HAL_UART_ERROR_CB_ID : |
| huart->ErrorCallback = pCallback; |
| break; |
| |
| case HAL_UART_ABORT_COMPLETE_CB_ID : |
| huart->AbortCpltCallback = pCallback; |
| break; |
| |
| case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID : |
| huart->AbortTransmitCpltCallback = pCallback; |
| break; |
| |
| case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID : |
| huart->AbortReceiveCpltCallback = pCallback; |
| break; |
| |
| case HAL_UART_MSPINIT_CB_ID : |
| huart->MspInitCallback = pCallback; |
| break; |
| |
| case HAL_UART_MSPDEINIT_CB_ID : |
| huart->MspDeInitCallback = pCallback; |
| break; |
| |
| default : |
| /* Update the error code */ |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (huart->gState == HAL_UART_STATE_RESET) |
| { |
| switch (CallbackID) |
| { |
| case HAL_UART_MSPINIT_CB_ID : |
| huart->MspInitCallback = pCallback; |
| break; |
| |
| case HAL_UART_MSPDEINIT_CB_ID : |
| huart->MspDeInitCallback = pCallback; |
| break; |
| |
| default : |
| /* Update the error code */ |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* Update the error code */ |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @brief Unregister an UART Callback |
| * UART callaback is redirected to the weak predefined callback |
| * @note The HAL_UART_UnRegisterCallback() may be called before HAL_UART_Init(), HAL_HalfDuplex_Init(), |
| * HAL_LIN_Init(), HAL_MultiProcessor_Init() to un-register callbacks for HAL_UART_MSPINIT_CB_ID |
| * and HAL_UART_MSPDEINIT_CB_ID |
| * @param huart uart handle |
| * @param CallbackID ID of the callback to be unregistered |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID |
| * @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID |
| * @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID |
| * @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID |
| * @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID |
| * @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID |
| * @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID |
| * @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID |
| * @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID |
| * @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_UnRegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| if (HAL_UART_STATE_READY == huart->gState) |
| { |
| switch (CallbackID) |
| { |
| case HAL_UART_TX_HALFCOMPLETE_CB_ID : |
| huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */ |
| break; |
| |
| case HAL_UART_TX_COMPLETE_CB_ID : |
| huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */ |
| break; |
| |
| case HAL_UART_RX_HALFCOMPLETE_CB_ID : |
| huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */ |
| break; |
| |
| case HAL_UART_RX_COMPLETE_CB_ID : |
| huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */ |
| break; |
| |
| case HAL_UART_ERROR_CB_ID : |
| huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */ |
| break; |
| |
| case HAL_UART_ABORT_COMPLETE_CB_ID : |
| huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ |
| break; |
| |
| case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID : |
| huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */ |
| break; |
| |
| case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID : |
| huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak AbortReceiveCpltCallback */ |
| break; |
| |
| case HAL_UART_MSPINIT_CB_ID : |
| huart->MspInitCallback = HAL_UART_MspInit; /* Legacy weak MspInitCallback */ |
| break; |
| |
| case HAL_UART_MSPDEINIT_CB_ID : |
| huart->MspDeInitCallback = HAL_UART_MspDeInit; /* Legacy weak MspDeInitCallback */ |
| break; |
| |
| default : |
| /* Update the error code */ |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (HAL_UART_STATE_RESET == huart->gState) |
| { |
| switch (CallbackID) |
| { |
| case HAL_UART_MSPINIT_CB_ID : |
| huart->MspInitCallback = HAL_UART_MspInit; |
| break; |
| |
| case HAL_UART_MSPDEINIT_CB_ID : |
| huart->MspDeInitCallback = HAL_UART_MspDeInit; |
| break; |
| |
| default : |
| /* Update the error code */ |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* Update the error code */ |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @brief Register a User UART Rx Event Callback |
| * To be used instead of the weak predefined callback |
| * @param huart Uart handle |
| * @param pCallback Pointer to the Rx Event Callback function |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_RegisterRxEventCallback(UART_HandleTypeDef *huart, pUART_RxEventCallbackTypeDef pCallback) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| if (pCallback == NULL) |
| { |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| return HAL_ERROR; |
| } |
| |
| /* Process locked */ |
| __HAL_LOCK(huart); |
| |
| if (huart->gState == HAL_UART_STATE_READY) |
| { |
| huart->RxEventCallback = pCallback; |
| } |
| else |
| { |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(huart); |
| |
| return status; |
| } |
| |
| /** |
| * @brief UnRegister the UART Rx Event Callback |
| * UART Rx Event Callback is redirected to the weak HAL_UARTEx_RxEventCallback() predefined callback |
| * @param huart Uart handle |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_UnRegisterRxEventCallback(UART_HandleTypeDef *huart) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Process locked */ |
| __HAL_LOCK(huart); |
| |
| if (huart->gState == HAL_UART_STATE_READY) |
| { |
| huart->RxEventCallback = HAL_UARTEx_RxEventCallback; /* Legacy weak UART Rx Event Callback */ |
| } |
| else |
| { |
| huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK; |
| |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(huart); |
| return status; |
| } |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @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 API's 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 API's are : |
| (+) HAL_UART_Transmit() |
| (+) HAL_UART_Receive() |
| |
| (#) Non-Blocking mode API's with Interrupt are : |
| (+) HAL_UART_Transmit_IT() |
| (+) HAL_UART_Receive_IT() |
| (+) HAL_UART_IRQHandler() |
| |
| (#) Non-Blocking mode API's 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() |
| |
| (#) Non-Blocking mode transfers could be aborted using Abort API's : |
| (+) HAL_UART_Abort() |
| (+) HAL_UART_AbortTransmit() |
| (+) HAL_UART_AbortReceive() |
| (+) HAL_UART_Abort_IT() |
| (+) HAL_UART_AbortTransmit_IT() |
| (+) HAL_UART_AbortReceive_IT() |
| |
| (#) For Abort services based on interrupts (HAL_UART_Abortxxx_IT), a set of Abort Complete Callbacks are provided: |
| (+) HAL_UART_AbortCpltCallback() |
| (+) HAL_UART_AbortTransmitCpltCallback() |
| (+) HAL_UART_AbortReceiveCpltCallback() |
| |
| (#) A Rx Event Reception Callback (Rx event notification) is available for Non_Blocking modes of enhanced reception services: |
| (+) HAL_UARTEx_RxEventCallback() |
| |
| (#) In Non-Blocking mode transfers, possible errors are split into 2 categories. |
| Errors are handled as follows : |
| (+) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is |
| to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception . |
| Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type, |
| and HAL_UART_ErrorCallback() user callback is executed. Transfer is kept ongoing on UART side. |
| If user wants to abort it, Abort services should be called by user. |
| (+) Error is considered as Blocking : Transfer could not be completed properly and is aborted. |
| This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode. |
| Error code is set to allow user to identify error type, and HAL_UART_ErrorCallback() user callback is executed. |
| |
| -@- 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. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 provided through pData. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size, uint32_t Timeout) |
| { |
| const uint8_t *pdata8bits; |
| const uint16_t *pdata16bits; |
| 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; |
| } |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = HAL_UART_STATE_BUSY_TX; |
| |
| /* Init tickstart for timeout management */ |
| tickstart = HAL_GetTick(); |
| |
| huart->TxXferSize = Size; |
| huart->TxXferCount = Size; |
| |
| /* In case of 9bits/No Parity transfer, pData needs to be handled as a uint16_t pointer */ |
| if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE)) |
| { |
| pdata8bits = NULL; |
| pdata16bits = (const uint16_t *) pData; |
| } |
| else |
| { |
| pdata8bits = pData; |
| pdata16bits = NULL; |
| } |
| |
| while (huart->TxXferCount > 0U) |
| { |
| if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| huart->gState = HAL_UART_STATE_READY; |
| |
| return HAL_TIMEOUT; |
| } |
| if (pdata8bits == NULL) |
| { |
| huart->Instance->DR = (uint16_t)(*pdata16bits & 0x01FFU); |
| pdata16bits++; |
| } |
| else |
| { |
| huart->Instance->DR = (uint8_t)(*pdata8bits & 0xFFU); |
| pdata8bits++; |
| } |
| huart->TxXferCount--; |
| } |
| |
| if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| huart->gState = HAL_UART_STATE_READY; |
| |
| return HAL_TIMEOUT; |
| } |
| |
| /* At end of Tx process, restore huart->gState to Ready */ |
| huart->gState = HAL_UART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receives an amount of data in blocking mode. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the received data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 available through pData. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) 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) |
| { |
| uint8_t *pdata8bits; |
| uint16_t *pdata16bits; |
| 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; |
| } |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->RxState = HAL_UART_STATE_BUSY_RX; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* Init tickstart for timeout management */ |
| tickstart = HAL_GetTick(); |
| |
| huart->RxXferSize = Size; |
| huart->RxXferCount = Size; |
| |
| /* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */ |
| if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE)) |
| { |
| pdata8bits = NULL; |
| pdata16bits = (uint16_t *) pData; |
| } |
| else |
| { |
| pdata8bits = pData; |
| pdata16bits = NULL; |
| } |
| |
| /* Check the remain data to be received */ |
| while (huart->RxXferCount > 0U) |
| { |
| if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| return HAL_TIMEOUT; |
| } |
| if (pdata8bits == NULL) |
| { |
| *pdata16bits = (uint16_t)(huart->Instance->DR & 0x01FF); |
| pdata16bits++; |
| } |
| else |
| { |
| if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE))) |
| { |
| *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF); |
| } |
| else |
| { |
| *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F); |
| } |
| pdata8bits++; |
| } |
| huart->RxXferCount--; |
| } |
| |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Sends an amount of data in non blocking mode. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 provided through pData. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, const 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; |
| } |
| |
| huart->pTxBuffPtr = pData; |
| huart->TxXferSize = Size; |
| huart->TxXferCount = Size; |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->gState = HAL_UART_STATE_BUSY_TX; |
| |
| /* 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. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the received data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 available through pData. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) 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; |
| } |
| |
| /* Set Reception type to Standard reception */ |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| return (UART_Start_Receive_IT(huart, pData, Size)); |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Sends an amount of data in DMA mode. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 provided through pData. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size) |
| { |
| const 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; |
| } |
| |
| 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 stream */ |
| tmp = (const uint32_t *)&pData; |
| HAL_DMA_Start_IT(huart->hdmatx, *(const uint32_t *)tmp, (uint32_t)&huart->Instance->DR, Size); |
| |
| /* Clear the TC flag in the SR register by writing 0 to it */ |
| __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC); |
| |
| /* Enable the DMA transfer for transmit request by setting the DMAT bit |
| in the UART CR3 register */ |
| ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receives an amount of data in DMA mode. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the received data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 available through pData. |
| * @param huart Pointer to a UART_HandleTypeDef structure that contains |
| * the configuration information for the specified UART module. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be received. |
| * @note When the UART parity is enabled (PCE = 1) the received data contains the parity bit. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UART_Receive_DMA(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; |
| } |
| |
| /* Set Reception type to Standard reception */ |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| return (UART_Start_Receive_DMA(huart, pData, Size)); |
| } |
| 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; |
| |
| 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 */ |
| ATOMIC_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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the UART DMA Rx request */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| } |
| |
| 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) |
| { |
| |
| if (huart->gState == HAL_UART_STATE_BUSY_TX) |
| { |
| /* Enable the UART DMA Tx request */ |
| ATOMIC_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); |
| |
| /* Re-enable PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| if (huart->Init.Parity != UART_PARITY_NONE) |
| { |
| ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| } |
| ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Enable the UART DMA Rx request */ |
| ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| } |
| |
| 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) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx stream */ |
| 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) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx stream */ |
| if (huart->hdmarx != NULL) |
| { |
| HAL_DMA_Abort(huart->hdmarx); |
| } |
| UART_EndRxTransfer(huart); |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Receive an amount of data in blocking mode till either the expected number of data is received or an IDLE event occurs. |
| * @note HAL_OK is returned if reception is completed (expected number of data has been received) |
| * or if reception is stopped after IDLE event (less than the expected number of data has been received) |
| * In this case, RxLen output parameter indicates number of data available in reception buffer. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M = 01), |
| * the received data is handled as a set of uint16_t. In this case, Size must indicate the number |
| * of uint16_t available through pData. |
| * @param huart UART handle. |
| * @param pData Pointer to data buffer (uint8_t or uint16_t data elements). |
| * @param Size Amount of data elements (uint8_t or uint16_t) to be received. |
| * @param RxLen Number of data elements finally received (could be lower than Size, in case reception ends on IDLE event) |
| * @param Timeout Timeout duration expressed in ms (covers the whole reception sequence). |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint16_t *RxLen, |
| uint32_t Timeout) |
| { |
| uint8_t *pdata8bits; |
| uint16_t *pdata16bits; |
| uint32_t tickstart; |
| |
| /* Check that a Rx process is not already ongoing */ |
| if (huart->RxState == HAL_UART_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->RxState = HAL_UART_STATE_BUSY_RX; |
| huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| /* Init tickstart for timeout management */ |
| tickstart = HAL_GetTick(); |
| |
| huart->RxXferSize = Size; |
| huart->RxXferCount = Size; |
| |
| /* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */ |
| if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE)) |
| { |
| pdata8bits = NULL; |
| pdata16bits = (uint16_t *) pData; |
| } |
| else |
| { |
| pdata8bits = pData; |
| pdata16bits = NULL; |
| } |
| |
| /* Initialize output number of received elements */ |
| *RxLen = 0U; |
| |
| /* as long as data have to be received */ |
| while (huart->RxXferCount > 0U) |
| { |
| /* Check if IDLE flag is set */ |
| if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE)) |
| { |
| /* Clear IDLE flag in ISR */ |
| __HAL_UART_CLEAR_IDLEFLAG(huart); |
| |
| /* If Set, but no data ever received, clear flag without exiting loop */ |
| /* If Set, and data has already been received, this means Idle Event is valid : End reception */ |
| if (*RxLen > 0U) |
| { |
| huart->RxEventType = HAL_UART_RXEVENT_IDLE; |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| } |
| |
| /* Check if RXNE flag is set */ |
| if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE)) |
| { |
| if (pdata8bits == NULL) |
| { |
| *pdata16bits = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF); |
| pdata16bits++; |
| } |
| else |
| { |
| if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE))) |
| { |
| *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF); |
| } |
| else |
| { |
| *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F); |
| } |
| |
| pdata8bits++; |
| } |
| /* Increment number of received elements */ |
| *RxLen += 1U; |
| huart->RxXferCount--; |
| } |
| |
| /* Check for the Timeout */ |
| if (Timeout != HAL_MAX_DELAY) |
| { |
| if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U)) |
| { |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| return HAL_TIMEOUT; |
| } |
| } |
| } |
| |
| /* Set number of received elements in output parameter : RxLen */ |
| *RxLen = huart->RxXferSize - huart->RxXferCount; |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive an amount of data in interrupt mode till either the expected number of data is received or an IDLE event occurs. |
| * @note Reception is initiated by this function call. Further progress of reception is achieved thanks |
| * to UART interrupts raised by RXNE and IDLE events. Callback is called at end of reception indicating |
| * number of received data elements. |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M = 01), |
| * the received data is handled as a set of uint16_t. In this case, Size must indicate the number |
| * of uint16_t available through pData. |
| * @param huart UART handle. |
| * @param pData Pointer to data buffer (uint8_t or uint16_t data elements). |
| * @param Size Amount of data elements (uint8_t or uint16_t) to be received. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size) |
| { |
| HAL_StatusTypeDef status; |
| |
| /* Check that a Rx process is not already ongoing */ |
| if (huart->RxState == HAL_UART_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Set Reception type to reception till IDLE Event*/ |
| huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| status = UART_Start_Receive_IT(huart, pData, Size); |
| |
| /* Check Rx process has been successfully started */ |
| if (status == HAL_OK) |
| { |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| __HAL_UART_CLEAR_IDLEFLAG(huart); |
| ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_IDLEIE); |
| } |
| else |
| { |
| /* In case of errors already pending when reception is started, |
| Interrupts may have already been raised and lead to reception abortion. |
| (Overrun error for instance). |
| In such case Reception Type has been reset to HAL_UART_RECEPTION_STANDARD. */ |
| status = HAL_ERROR; |
| } |
| } |
| |
| return status; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Receive an amount of data in DMA mode till either the expected number of data is received or an IDLE event occurs. |
| * @note Reception is initiated by this function call. Further progress of reception is achieved thanks |
| * to DMA services, transferring automatically received data elements in user reception buffer and |
| * calling registered callbacks at half/end of reception. UART IDLE events are also used to consider |
| * reception phase as ended. In all cases, callback execution will indicate number of received data elements. |
| * @note When the UART parity is enabled (PCE = 1), the received data contain |
| * the parity bit (MSB position). |
| * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M = 01), |
| * the received data is handled as a set of uint16_t. In this case, Size must indicate the number |
| * of uint16_t available through pData. |
| * @param huart UART handle. |
| * @param pData Pointer to data buffer (uint8_t or uint16_t data elements). |
| * @param Size Amount of data elements (uint8_t or uint16_t) to be received. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size) |
| { |
| HAL_StatusTypeDef status; |
| |
| /* Check that a Rx process is not already ongoing */ |
| if (huart->RxState == HAL_UART_STATE_READY) |
| { |
| if ((pData == NULL) || (Size == 0U)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Set Reception type to reception till IDLE Event*/ |
| huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| status = UART_Start_Receive_DMA(huart, pData, Size); |
| |
| /* Check Rx process has been successfully started */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| __HAL_UART_CLEAR_IDLEFLAG(huart); |
| ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_IDLEIE); |
| } |
| else |
| { |
| /* In case of errors already pending when reception is started, |
| Interrupts may have already been raised and lead to reception abortion. |
| (Overrun error for instance). |
| In such case Reception Type has been reset to HAL_UART_RECEPTION_STANDARD. */ |
| status = HAL_ERROR; |
| } |
| |
| return status; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Provide Rx Event type that has lead to RxEvent callback execution. |
| * @note When HAL_UARTEx_ReceiveToIdle_IT() or HAL_UARTEx_ReceiveToIdle_DMA() API are called, progress |
| * of reception process is provided to application through calls of Rx Event callback (either default one |
| * HAL_UARTEx_RxEventCallback() or user registered one). As several types of events could occur (IDLE event, |
| * Half Transfer, or Transfer Complete), this function allows to retrieve the Rx Event type that has lead |
| * to Rx Event callback execution. |
| * @note This function is expected to be called within the user implementation of Rx Event Callback, |
| * in order to provide the accurate value : |
| * In Interrupt Mode : |
| * - HAL_UART_RXEVENT_TC : when Reception has been completed (expected nb of data has been received) |
| * - HAL_UART_RXEVENT_IDLE : when Idle event occurred prior reception has been completed (nb of |
| * received data is lower than expected one) |
| * In DMA Mode : |
| * - HAL_UART_RXEVENT_TC : when Reception has been completed (expected nb of data has been received) |
| * - HAL_UART_RXEVENT_HT : when half of expected nb of data has been received |
| * - HAL_UART_RXEVENT_IDLE : when Idle event occurred prior reception has been completed (nb of |
| * received data is lower than expected one). |
| * In DMA mode, RxEvent callback could be called several times; |
| * When DMA is configured in Normal Mode, HT event does not stop Reception process; |
| * When DMA is configured in Circular Mode, HT, TC or IDLE events don't stop Reception process; |
| * @param huart UART handle. |
| * @retval Rx Event Type (returned value will be a value of @ref UART_RxEvent_Type_Values) |
| */ |
| HAL_UART_RxEventTypeTypeDef HAL_UARTEx_GetRxEventType(UART_HandleTypeDef *huart) |
| { |
| /* Return Rx Event type value, as stored in UART handle */ |
| return(huart->RxEventType); |
| } |
| |
| /** |
| * @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 UART Interrupts (Tx and Rx) |
| * - 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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE)); |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE)); |
| } |
| |
| /* Disable the UART DMA Tx request if enabled */ |
| if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx stream: 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; |
| |
| if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK) |
| { |
| if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT) |
| { |
| /* Set error code to DMA */ |
| huart->ErrorCode = HAL_UART_ERROR_DMA; |
| |
| return HAL_TIMEOUT; |
| } |
| } |
| } |
| } |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx stream: 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; |
| |
| if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK) |
| { |
| if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT) |
| { |
| /* Set error code to DMA */ |
| huart->ErrorCode = HAL_UART_ERROR_DMA; |
| |
| return HAL_TIMEOUT; |
| } |
| } |
| } |
| } |
| |
| /* 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; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing Transmit transfer (blocking mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable UART Interrupts (Tx) |
| * - 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 */ |
| ATOMIC_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)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx stream : 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; |
| |
| if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK) |
| { |
| if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT) |
| { |
| /* Set error code to DMA */ |
| huart->ErrorCode = HAL_UART_ERROR_DMA; |
| |
| return HAL_TIMEOUT; |
| } |
| } |
| } |
| } |
| |
| /* 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 Rx transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable UART Interrupts (Rx) |
| * - 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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE)); |
| } |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx stream : 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; |
| |
| if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK) |
| { |
| if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT) |
| { |
| /* Set error code to DMA */ |
| huart->ErrorCode = HAL_UART_ERROR_DMA; |
| |
| return HAL_TIMEOUT; |
| } |
| } |
| } |
| } |
| |
| /* Reset Rx transfer counter */ |
| huart->RxXferCount = 0x00U; |
| |
| /* Restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| 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 UART Interrupts (Tx and Rx) |
| * - 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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE)); |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE)); |
| } |
| |
| /* 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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx stream : 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)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx stream : 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; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort complete callback */ |
| huart->AbortCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort complete callback */ |
| HAL_UART_AbortCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing Transmit transfer (Interrupt mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable UART Interrupts (Tx) |
| * - 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 */ |
| ATOMIC_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)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the UART DMA Tx stream : 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 */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Transmit Complete Callback */ |
| huart->AbortTransmitCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort Transmit Complete Callback */ |
| HAL_UART_AbortTransmitCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| } |
| 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 */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Transmit Complete Callback */ |
| huart->AbortTransmitCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort Transmit Complete Callback */ |
| HAL_UART_AbortTransmitCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing Receive transfer (Interrupt mode). |
| * @param huart UART handle. |
| * @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable UART Interrupts (Rx) |
| * - 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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE)); |
| } |
| |
| /* Disable the UART DMA Rx request if enabled */ |
| if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx stream : 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; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Receive Complete Callback */ |
| huart->AbortReceiveCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort Receive Complete Callback */ |
| HAL_UART_AbortReceiveCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| } |
| else |
| { |
| /* Reset Rx transfer counter */ |
| huart->RxXferCount = 0x00U; |
| |
| /* Restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Receive Complete Callback */ |
| huart->AbortReceiveCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort Receive Complete Callback */ |
| HAL_UART_AbortReceiveCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| 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) && (((cr1its & USART_CR1_RXNEIE) != 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)) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the UART DMA Rx stream */ |
| 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 */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered error callback*/ |
| huart->ErrorCallback(huart); |
| #else |
| /*Call legacy weak error callback*/ |
| HAL_UART_ErrorCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| } |
| else |
| { |
| /* Call user error callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered error callback*/ |
| huart->ErrorCallback(huart); |
| #else |
| /*Call legacy weak error callback*/ |
| HAL_UART_ErrorCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| } |
| else |
| { |
| /* Non Blocking error : transfer could go on. |
| Error is notified to user through user error callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered error callback*/ |
| huart->ErrorCallback(huart); |
| #else |
| /*Call legacy weak error callback*/ |
| HAL_UART_ErrorCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| } |
| } |
| return; |
| } /* End if some error occurs */ |
| |
| /* Check current reception Mode : |
| If Reception till IDLE event has been selected : */ |
| if ((huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| && ((isrflags & USART_SR_IDLE) != 0U) |
| && ((cr1its & USART_SR_IDLE) != 0U)) |
| { |
| __HAL_UART_CLEAR_IDLEFLAG(huart); |
| |
| /* Check if DMA mode is enabled in UART */ |
| if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| /* DMA mode enabled */ |
| /* Check received length : If all expected data are received, do nothing, |
| (DMA cplt callback will be called). |
| Otherwise, if at least one data has already been received, IDLE event is to be notified to user */ |
| uint16_t nb_remaining_rx_data = (uint16_t) __HAL_DMA_GET_COUNTER(huart->hdmarx); |
| if ((nb_remaining_rx_data > 0U) |
| && (nb_remaining_rx_data < huart->RxXferSize)) |
| { |
| /* Reception is not complete */ |
| huart->RxXferCount = nb_remaining_rx_data; |
| |
| /* In Normal mode, end DMA xfer and HAL UART Rx process*/ |
| if (huart->hdmarx->Init.Mode != DMA_CIRCULAR) |
| { |
| /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the DMA transfer for the receiver request by resetting the DMAR bit |
| in the UART CR3 register */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE); |
| |
| /* Last bytes received, so no need as the abort is immediate */ |
| (void)HAL_DMA_Abort(huart->hdmarx); |
| } |
| |
| /* Initialize type of RxEvent that correspond to RxEvent callback execution; |
| In this case, Rx Event type is Idle Event */ |
| huart->RxEventType = HAL_UART_RXEVENT_IDLE; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx Event callback*/ |
| huart->RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount)); |
| #else |
| /*Call legacy weak Rx Event callback*/ |
| HAL_UARTEx_RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount)); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| else |
| { |
| /* If DMA is in Circular mode, Idle event is to be reported to user |
| even if occurring after a Transfer Complete event from DMA */ |
| if (nb_remaining_rx_data == huart->RxXferSize) |
| { |
| if (huart->hdmarx->Init.Mode == DMA_CIRCULAR) |
| { |
| /* Initialize type of RxEvent that correspond to RxEvent callback execution; |
| In this case, Rx Event type is Idle Event */ |
| huart->RxEventType = HAL_UART_RXEVENT_IDLE; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx Event callback*/ |
| huart->RxEventCallback(huart, huart->RxXferSize); |
| #else |
| /*Call legacy weak Rx Event callback*/ |
| HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize); |
| #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */ |
| } |
| } |
| } |
| return; |
| } |
| else |
| { |
| /* DMA mode not enabled */ |
| /* Check received length : If all expected data are received, do nothing. |
| Otherwise, if at least one data has already been received, IDLE event is to be notified to user */ |
| uint16_t nb_rx_data = huart->RxXferSize - huart->RxXferCount; |
| if ((huart->RxXferCount > 0U) |
| && (nb_rx_data > 0U)) |
| { |
| /* Disable the UART Parity Error Interrupt and RXNE interrupts */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| |
| /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Rx process is completed, restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE); |
| |
| /* Initialize type of RxEvent that correspond to RxEvent callback execution; |
| In this case, Rx Event type is Idle Event */ |
| huart->RxEventType = HAL_UART_RXEVENT_IDLE; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx complete callback*/ |
| huart->RxEventCallback(huart, nb_rx_data); |
| #else |
| /*Call legacy weak Rx Event callback*/ |
| HAL_UARTEx_RxEventCallback(huart, nb_rx_data); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| return; |
| } |
| } |
| |
| /* 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. |
| */ |
| } |
| |
| /** |
| * @brief Reception Event Callback (Rx event notification called after use of advanced reception service). |
| * @param huart UART handle |
| * @param Size Number of data available in application reception buffer (indicates a position in |
| * reception buffer until which, data are available) |
| * @retval None |
| */ |
| __weak void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(huart); |
| UNUSED(Size); |
| |
| /* NOTE : This function should not be modified, when the callback is needed, |
| the HAL_UARTEx_RxEventCallback 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 */ |
| ATOMIC_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 */ |
| ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RWU); |
| |
| huart->gState = HAL_UART_STATE_READY; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| /* 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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_RWU); |
| |
| huart->gState = HAL_UART_STATE_READY; |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| /* 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(const 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(const UART_HandleTypeDef *huart) |
| { |
| return huart->ErrorCode; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup UART_Private_Functions UART Private Functions |
| * @{ |
| */ |
| |
| /** |
| * @brief Initialize the callbacks to their default values. |
| * @param huart UART handle. |
| * @retval none |
| */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart) |
| { |
| /* Init the UART Callback settings */ |
| huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */ |
| huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */ |
| huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */ |
| huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */ |
| huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */ |
| huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ |
| huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */ |
| huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak AbortReceiveCpltCallback */ |
| huart->RxEventCallback = HAL_UARTEx_RxEventCallback; /* Legacy weak RxEventCallback */ |
| |
| } |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| |
| /** |
| * @brief DMA UART transmit process 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_DMATransmitCplt(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| /* DMA Normal mode*/ |
| if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) |
| { |
| huart->TxXferCount = 0x00U; |
| |
| /* Disable the DMA transfer for transmit request by setting the DMAT bit |
| in the UART CR3 register */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Enable the UART Transmit Complete Interrupt */ |
| ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE); |
| |
| } |
| /* DMA Circular mode */ |
| else |
| { |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Tx complete callback*/ |
| huart->TxCpltCallback(huart); |
| #else |
| /*Call legacy weak Tx complete callback*/ |
| HAL_UART_TxCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| } |
| |
| /** |
| * @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; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Tx complete callback*/ |
| huart->TxHalfCpltCallback(huart); |
| #else |
| /*Call legacy weak Tx complete callback*/ |
| HAL_UART_TxHalfCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief DMA UART receive process 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_DMAReceiveCplt(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| |
| /* DMA Normal mode*/ |
| if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) |
| { |
| huart->RxXferCount = 0U; |
| |
| /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| ATOMIC_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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| |
| /* If Reception till IDLE event has been selected, Disable IDLE Interrupt */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE); |
| } |
| } |
| |
| /* Initialize type of RxEvent that correspond to RxEvent callback execution; |
| In this case, Rx Event type is Transfer Complete */ |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| /* Check current reception Mode : |
| If Reception till IDLE event has been selected : use Rx Event callback */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx Event callback*/ |
| huart->RxEventCallback(huart, huart->RxXferSize); |
| #else |
| /*Call legacy weak Rx Event callback*/ |
| HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| else |
| { |
| /* In other cases : use Rx Complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx complete callback*/ |
| huart->RxCpltCallback(huart); |
| #else |
| /*Call legacy weak Rx complete callback*/ |
| HAL_UART_RxCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| } |
| |
| /** |
| * @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; |
| |
| /* Initialize type of RxEvent that correspond to RxEvent callback execution; |
| In this case, Rx Event type is Half Transfer */ |
| huart->RxEventType = HAL_UART_RXEVENT_HT; |
| |
| /* Check current reception Mode : |
| If Reception till IDLE event has been selected : use Rx Event callback */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx Event callback*/ |
| huart->RxEventCallback(huart, huart->RxXferSize / 2U); |
| #else |
| /*Call legacy weak Rx Event callback*/ |
| HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize / 2U); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| else |
| { |
| /* In other cases : use Rx Half Complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx Half complete callback*/ |
| huart->RxHalfCpltCallback(huart); |
| #else |
| /*Call legacy weak Rx Half complete callback*/ |
| HAL_UART_RxHalfCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| } |
| |
| /** |
| * @brief DMA UART communication error callback. |
| * @param hdma Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @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 = 0x00U; |
| 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 = 0x00U; |
| UART_EndRxTransfer(huart); |
| } |
| |
| huart->ErrorCode |= HAL_UART_ERROR_DMA; |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered error callback*/ |
| huart->ErrorCallback(huart); |
| #else |
| /*Call legacy weak error callback*/ |
| HAL_UART_ErrorCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief This function handles UART Communication Timeout. It waits |
| * until a flag is no longer in the specified status. |
| * @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 actual 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 (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U)) |
| { |
| |
| return HAL_TIMEOUT; |
| } |
| |
| if ((READ_BIT(huart->Instance->CR1, USART_CR1_RE) != 0U) && (Flag != UART_FLAG_TXE) && (Flag != UART_FLAG_TC)) |
| { |
| if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) == SET) |
| { |
| /* Clear Overrun Error flag*/ |
| __HAL_UART_CLEAR_OREFLAG(huart); |
| |
| /* Blocking error : transfer is aborted |
| Set the UART state ready to be able to start again the process, |
| Disable Rx Interrupts if ongoing */ |
| UART_EndRxTransfer(huart); |
| |
| huart->ErrorCode = HAL_UART_ERROR_ORE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(huart); |
| |
| return HAL_ERROR; |
| } |
| } |
| } |
| } |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Start Receive operation in interrupt mode. |
| * @note This function could be called by all HAL UART API providing reception in Interrupt mode. |
| * @note When calling this function, parameters validity is considered as already checked, |
| * i.e. Rx State, buffer address, ... |
| * UART Handle is assumed as Locked. |
| * @param huart UART handle. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be received. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef UART_Start_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size) |
| { |
| huart->pRxBuffPtr = pData; |
| huart->RxXferSize = Size; |
| huart->RxXferCount = Size; |
| |
| huart->ErrorCode = HAL_UART_ERROR_NONE; |
| huart->RxState = HAL_UART_STATE_BUSY_RX; |
| |
| if (huart->Init.Parity != UART_PARITY_NONE) |
| { |
| /* 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; |
| } |
| |
| /** |
| * @brief Start Receive operation in DMA mode. |
| * @note This function could be called by all HAL UART API providing reception in DMA mode. |
| * @note When calling this function, parameters validity is considered as already checked, |
| * i.e. Rx State, buffer address, ... |
| * UART Handle is assumed as Locked. |
| * @param huart UART handle. |
| * @param pData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be received. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef UART_Start_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size) |
| { |
| uint32_t *tmp; |
| |
| 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 stream */ |
| 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); |
| |
| if (huart->Init.Parity != UART_PARITY_NONE) |
| { |
| /* Enable the UART Parity Error Interrupt */ |
| ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE); |
| } |
| |
| /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */ |
| ATOMIC_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 */ |
| ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR); |
| |
| 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 */ |
| ATOMIC_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 */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
| |
| /* In case of reception waiting for IDLE event, disable also the IDLE IE interrupt source */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE); |
| } |
| |
| /* At end of Rx process, restore huart->RxState to Ready */ |
| huart->RxState = HAL_UART_STATE_READY; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| } |
| |
| /** |
| * @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 Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @retval None |
| */ |
| static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma) |
| { |
| UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| huart->RxXferCount = 0x00U; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered error callback*/ |
| huart->ErrorCallback(huart); |
| #else |
| /*Call legacy weak error callback*/ |
| HAL_UART_ErrorCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @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 Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @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; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* Call user Abort complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort complete callback */ |
| huart->AbortCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort complete callback */ |
| HAL_UART_AbortCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @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 Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @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; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* Call user Abort complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort complete callback */ |
| huart->AbortCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort complete callback */ |
| HAL_UART_AbortCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @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 Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @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 */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Transmit Complete Callback */ |
| huart->AbortTransmitCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort Transmit Complete Callback */ |
| HAL_UART_AbortTransmitCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @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 Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @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; |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* Call user Abort complete callback */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Receive Complete Callback */ |
| huart->AbortReceiveCpltCallback(huart); |
| #else |
| /* Call legacy weak Abort Receive Complete Callback */ |
| HAL_UART_AbortReceiveCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @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) |
| { |
| const 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) && (huart->Init.Parity == UART_PARITY_NONE)) |
| { |
| tmp = (const uint16_t *) huart->pTxBuffPtr; |
| huart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF); |
| huart->pTxBuffPtr += 2U; |
| } |
| else |
| { |
| huart->Instance->DR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF); |
| } |
| |
| if (--huart->TxXferCount == 0U) |
| { |
| /* Disable the UART Transmit Data Register Empty 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; |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Tx complete callback*/ |
| huart->TxCpltCallback(huart); |
| #else |
| /*Call legacy weak Tx complete callback*/ |
| HAL_UART_TxCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| |
| 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) |
| { |
| uint8_t *pdata8bits; |
| uint16_t *pdata16bits; |
| |
| /* Check that a Rx process is ongoing */ |
| if (huart->RxState == HAL_UART_STATE_BUSY_RX) |
| { |
| if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE)) |
| { |
| pdata8bits = NULL; |
| pdata16bits = (uint16_t *) huart->pRxBuffPtr; |
| *pdata16bits = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF); |
| huart->pRxBuffPtr += 2U; |
| } |
| else |
| { |
| pdata8bits = (uint8_t *) huart->pRxBuffPtr; |
| pdata16bits = NULL; |
| |
| if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE))) |
| { |
| *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF); |
| } |
| else |
| { |
| *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F); |
| } |
| huart->pRxBuffPtr += 1U; |
| } |
| |
| if (--huart->RxXferCount == 0U) |
| { |
| /* Disable the UART 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; |
| |
| /* Initialize type of RxEvent to Transfer Complete */ |
| huart->RxEventType = HAL_UART_RXEVENT_TC; |
| |
| /* Check current reception Mode : |
| If Reception till IDLE event has been selected : */ |
| if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE) |
| { |
| /* Set reception type to Standard */ |
| huart->ReceptionType = HAL_UART_RECEPTION_STANDARD; |
| |
| /* Disable IDLE interrupt */ |
| ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE); |
| |
| /* Check if IDLE flag is set */ |
| if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE)) |
| { |
| /* Clear IDLE flag in ISR */ |
| __HAL_UART_CLEAR_IDLEFLAG(huart); |
| } |
| |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx Event callback*/ |
| huart->RxEventCallback(huart, huart->RxXferSize); |
| #else |
| /*Call legacy weak Rx Event callback*/ |
| HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| else |
| { |
| /* Standard reception API called */ |
| #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
| /*Call registered Rx complete callback*/ |
| huart->RxCpltCallback(huart); |
| #else |
| /*Call legacy weak Rx complete callback*/ |
| HAL_UART_RxCpltCallback(huart); |
| #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
| } |
| |
| 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; |
| uint32_t pclk; |
| |
| /* Check the parameters */ |
| assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate)); |
| assert_param(IS_UART_STOPBITS(huart->Init.StopBits)); |
| assert_param(IS_UART_PARITY(huart->Init.Parity)); |
| assert_param(IS_UART_MODE(huart->Init.Mode)); |
| |
| /*-------------------------- USART CR2 Configuration -----------------------*/ |
| /* 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); |
| |
| /*-------------------------- USART 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 */ |
| |
| 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); |
| |
| /*-------------------------- USART 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((huart->Instance == USART1) || (huart->Instance == USART6)) |
| { |
| pclk = HAL_RCC_GetPCLK2Freq(); |
| } |
| else |
| { |
| pclk = HAL_RCC_GetPCLK1Freq(); |
| } |
| |
| /*-------------------------- USART BRR Configuration ---------------------*/ |
| if (huart->Init.OverSampling == UART_OVERSAMPLING_8) |
| { |
| huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate); |
| } |
| else |
| { |
| huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate); |
| } |
| } |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* HAL_UART_MODULE_ENABLED */ |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |