3722 lines
123 KiB
C
3722 lines
123 KiB
C
/**
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******************************************************************************
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* @file stm32h7xx_hal_usart.c
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* @author MCD Application Team
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* @brief USART HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of the Universal Synchronous/Asynchronous Receiver Transmitter
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* Peripheral (USART).
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* + Initialization and de-initialization functions
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* + IO operation functions
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* + Peripheral Control functions
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* + Peripheral State and Error functions
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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@verbatim
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===============================================================================
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##### How to use this driver #####
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===============================================================================
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[..]
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The USART HAL driver can be used as follows:
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(#) Declare a USART_HandleTypeDef handle structure (eg. USART_HandleTypeDef husart).
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(#) Initialize the USART low level resources by implementing the HAL_USART_MspInit() API:
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(++) Enable the USARTx interface clock.
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(++) USART pins configuration:
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(+++) Enable the clock for the USART GPIOs.
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(+++) Configure these USART pins as alternate function pull-up.
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(++) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(),
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HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
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(+++) Configure the USARTx interrupt priority.
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(+++) Enable the NVIC USART IRQ handle.
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(++) USART interrupts handling:
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-@@- The specific USART interrupts (Transmission complete interrupt,
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RXNE interrupt and Error Interrupts) will be managed using the macros
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__HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process.
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(++) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA()
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HAL_USART_Receive_DMA() and HAL_USART_TransmitReceive_DMA() APIs):
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(+++) Declare a DMA handle structure for the Tx/Rx channel.
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(+++) Enable the DMAx interface clock.
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(+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
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(+++) Configure the DMA Tx/Rx channel.
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(+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle.
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(+++) Configure the priority and enable the NVIC for the transfer
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complete interrupt on the DMA Tx/Rx channel.
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(#) Program the Baud Rate, Word Length, Stop Bit, Parity, and Mode
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(Receiver/Transmitter) in the husart handle Init structure.
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(#) Initialize the USART registers by calling the HAL_USART_Init() API:
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(++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
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by calling the customized HAL_USART_MspInit(&husart) API.
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[..]
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(@) To configure and enable/disable the USART to wake up the MCU from stop mode, resort to UART API's
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HAL_UARTEx_StopModeWakeUpSourceConfig(), HAL_UARTEx_EnableStopMode() and
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HAL_UARTEx_DisableStopMode() in casting the USART handle to UART type UART_HandleTypeDef.
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##### Callback registration #####
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==================================
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[..]
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The compilation define USE_HAL_USART_REGISTER_CALLBACKS when set to 1
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allows the user to configure dynamically the driver callbacks.
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[..]
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Use Function HAL_USART_RegisterCallback() to register a user callback.
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Function HAL_USART_RegisterCallback() allows to register following callbacks:
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(+) TxHalfCpltCallback : Tx Half Complete Callback.
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(+) TxCpltCallback : Tx Complete Callback.
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(+) RxHalfCpltCallback : Rx Half Complete Callback.
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(+) RxCpltCallback : Rx Complete Callback.
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(+) TxRxCpltCallback : Tx Rx Complete Callback.
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(+) ErrorCallback : Error Callback.
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(+) AbortCpltCallback : Abort Complete Callback.
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(+) RxFifoFullCallback : Rx Fifo Full Callback.
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(+) TxFifoEmptyCallback : Tx Fifo Empty Callback.
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(+) MspInitCallback : USART MspInit.
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(+) MspDeInitCallback : USART MspDeInit.
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This function takes as parameters the HAL peripheral handle, the Callback ID
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and a pointer to the user callback function.
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[..]
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Use function HAL_USART_UnRegisterCallback() to reset a callback to the default
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weak (surcharged) function.
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HAL_USART_UnRegisterCallback() takes as parameters the HAL peripheral handle,
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and the Callback ID.
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This function allows to reset following callbacks:
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(+) TxHalfCpltCallback : Tx Half Complete Callback.
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(+) TxCpltCallback : Tx Complete Callback.
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(+) RxHalfCpltCallback : Rx Half Complete Callback.
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(+) RxCpltCallback : Rx Complete Callback.
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(+) TxRxCpltCallback : Tx Rx Complete Callback.
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(+) ErrorCallback : Error Callback.
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(+) AbortCpltCallback : Abort Complete Callback.
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(+) RxFifoFullCallback : Rx Fifo Full Callback.
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(+) TxFifoEmptyCallback : Tx Fifo Empty Callback.
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(+) MspInitCallback : USART MspInit.
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(+) MspDeInitCallback : USART MspDeInit.
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[..]
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By default, after the HAL_USART_Init() and when the state is HAL_USART_STATE_RESET
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all callbacks are set to the corresponding weak (surcharged) functions:
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examples HAL_USART_TxCpltCallback(), HAL_USART_RxHalfCpltCallback().
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Exception done for MspInit and MspDeInit functions that are respectively
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reset to the legacy weak (surcharged) functions in the HAL_USART_Init()
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and HAL_USART_DeInit() only when these callbacks are null (not registered beforehand).
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If not, MspInit or MspDeInit are not null, the HAL_USART_Init() and HAL_USART_DeInit()
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keep and use the user MspInit/MspDeInit callbacks (registered beforehand).
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[..]
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Callbacks can be registered/unregistered in HAL_USART_STATE_READY state only.
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Exception done MspInit/MspDeInit that can be registered/unregistered
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in HAL_USART_STATE_READY or HAL_USART_STATE_RESET state, thus registered (user)
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MspInit/DeInit callbacks can be used during the Init/DeInit.
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In that case first register the MspInit/MspDeInit user callbacks
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using HAL_USART_RegisterCallback() before calling HAL_USART_DeInit()
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or HAL_USART_Init() function.
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[..]
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When The compilation define USE_HAL_USART_REGISTER_CALLBACKS is set to 0 or
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not defined, the callback registration feature is not available
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and weak (surcharged) callbacks are used.
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@endverbatim
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32h7xx_hal.h"
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/** @addtogroup STM32H7xx_HAL_Driver
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* @{
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*/
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/** @defgroup USART USART
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* @brief HAL USART Synchronous module driver
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* @{
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*/
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#ifdef HAL_USART_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/** @defgroup USART_Private_Constants USART Private Constants
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* @{
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*/
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#define USART_DUMMY_DATA ((uint16_t) 0xFFFF) /*!< USART transmitted dummy data */
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#define USART_TEACK_REACK_TIMEOUT 1000U /*!< USART TX or RX enable acknowledge time-out value */
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#define USART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \
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USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8 | \
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USART_CR1_FIFOEN )) /*!< USART CR1 fields of parameters set by USART_SetConfig API */
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#define USART_CR2_FIELDS ((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | \
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USART_CR2_LBCL | USART_CR2_STOP | USART_CR2_SLVEN | \
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USART_CR2_DIS_NSS)) /*!< USART CR2 fields of parameters set by USART_SetConfig API */
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#define USART_CR3_FIELDS ((uint32_t)(USART_CR3_TXFTCFG | USART_CR3_RXFTCFG )) /*!< USART or USART CR3 fields of parameters set by USART_SetConfig API */
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#define USART_BRR_MIN 0x10U /* USART BRR minimum authorized value */
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#define USART_BRR_MAX 0xFFFFU /* USART BRR maximum authorized value */
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/**
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* @}
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*/
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/* Private macros ------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/** @addtogroup USART_Private_Functions
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* @{
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*/
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#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
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void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart);
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#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
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static void USART_EndTransfer(USART_HandleTypeDef *husart);
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static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMAError(DMA_HandleTypeDef *hdma);
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static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
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static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
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static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
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static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status,
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uint32_t Tickstart, uint32_t Timeout);
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static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart);
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static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart);
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static void USART_TxISR_8BIT(USART_HandleTypeDef *husart);
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static void USART_TxISR_16BIT(USART_HandleTypeDef *husart);
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static void USART_TxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart);
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static void USART_TxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart);
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static void USART_EndTransmit_IT(USART_HandleTypeDef *husart);
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static void USART_RxISR_8BIT(USART_HandleTypeDef *husart);
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static void USART_RxISR_16BIT(USART_HandleTypeDef *husart);
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static void USART_RxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart);
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static void USART_RxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart);
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/**
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* @}
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*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup USART_Exported_Functions USART Exported Functions
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* @{
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*/
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/** @defgroup USART_Exported_Functions_Group1 Initialization and de-initialization functions
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* @brief Initialization and Configuration functions
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*
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@verbatim
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===============================================================================
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##### Initialization and Configuration functions #####
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===============================================================================
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[..]
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This subsection provides a set of functions allowing to initialize the USART
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in asynchronous and in synchronous modes.
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(+) For the asynchronous mode only these parameters can be configured:
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(++) Baud Rate
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(++) Word Length
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(++) Stop Bit
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(++) Parity: If the parity is enabled, then the MSB bit of the data written
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in the data register is transmitted but is changed by the parity bit.
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(++) USART polarity
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(++) USART phase
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(++) USART LastBit
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(++) Receiver/transmitter modes
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[..]
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The HAL_USART_Init() function follows the USART synchronous configuration
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procedure (details for the procedure are available in reference manual).
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@endverbatim
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Depending on the frame length defined by the M1 and M0 bits (7-bit,
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8-bit or 9-bit), the possible USART formats are listed in the
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following table.
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Table 1. USART frame format.
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+-----------------------------------------------------------------------+
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| M1 bit | M0 bit | PCE bit | USART frame |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 0 | 0 | | SB | 8 bit data | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 1 | 0 | | SB | 9 bit data | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 1 | 0 | 0 | | SB | 7 bit data | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
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+-----------------------------------------------------------------------+
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* @{
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*/
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/**
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* @brief Initialize the USART mode according to the specified
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* parameters in the USART_InitTypeDef and initialize the associated handle.
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* @param husart USART handle.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart)
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{
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/* Check the USART handle allocation */
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if (husart == NULL)
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{
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return HAL_ERROR;
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}
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/* Check the parameters */
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assert_param(IS_USART_INSTANCE(husart->Instance));
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if (husart->State == HAL_USART_STATE_RESET)
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{
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/* Allocate lock resource and initialize it */
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husart->Lock = HAL_UNLOCKED;
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#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
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USART_InitCallbacksToDefault(husart);
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if (husart->MspInitCallback == NULL)
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{
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husart->MspInitCallback = HAL_USART_MspInit;
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}
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/* Init the low level hardware */
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husart->MspInitCallback(husart);
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#else
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/* Init the low level hardware : GPIO, CLOCK */
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HAL_USART_MspInit(husart);
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#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
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}
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husart->State = HAL_USART_STATE_BUSY;
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/* Disable the Peripheral */
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__HAL_USART_DISABLE(husart);
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/* Set the Usart Communication parameters */
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if (USART_SetConfig(husart) == HAL_ERROR)
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{
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return HAL_ERROR;
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}
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/* In Synchronous mode, the following bits must be kept cleared:
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- LINEN bit in the USART_CR2 register
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- HDSEL, SCEN and IREN bits in the USART_CR3 register.
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*/
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husart->Instance->CR2 &= ~USART_CR2_LINEN;
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husart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
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/* Enable the Peripheral */
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__HAL_USART_ENABLE(husart);
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/* TEACK and/or REACK to check before moving husart->State to Ready */
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return (USART_CheckIdleState(husart));
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}
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/**
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* @brief DeInitialize the USART peripheral.
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* @param husart USART handle.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart)
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{
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/* Check the USART handle allocation */
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if (husart == NULL)
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{
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return HAL_ERROR;
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}
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/* Check the parameters */
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assert_param(IS_USART_INSTANCE(husart->Instance));
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husart->State = HAL_USART_STATE_BUSY;
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husart->Instance->CR1 = 0x0U;
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husart->Instance->CR2 = 0x0U;
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husart->Instance->CR3 = 0x0U;
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#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
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if (husart->MspDeInitCallback == NULL)
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{
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husart->MspDeInitCallback = HAL_USART_MspDeInit;
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}
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/* DeInit the low level hardware */
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husart->MspDeInitCallback(husart);
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#else
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/* DeInit the low level hardware */
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HAL_USART_MspDeInit(husart);
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#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
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husart->ErrorCode = HAL_USART_ERROR_NONE;
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husart->State = HAL_USART_STATE_RESET;
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/* Process Unlock */
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__HAL_UNLOCK(husart);
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return HAL_OK;
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}
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/**
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* @brief Initialize the USART MSP.
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* @param husart USART handle.
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* @retval None
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*/
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__weak void HAL_USART_MspInit(USART_HandleTypeDef *husart)
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{
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/* Prevent unused argument(s) compilation warning */
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UNUSED(husart);
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/* NOTE : This function should not be modified, when the callback is needed,
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the HAL_USART_MspInit can be implemented in the user file
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*/
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}
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/**
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* @brief DeInitialize the USART MSP.
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* @param husart USART handle.
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* @retval None
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*/
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__weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart)
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{
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/* Prevent unused argument(s) compilation warning */
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UNUSED(husart);
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/* NOTE : This function should not be modified, when the callback is needed,
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the HAL_USART_MspDeInit can be implemented in the user file
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*/
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}
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#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
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/**
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* @brief Register a User USART Callback
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* To be used instead of the weak predefined callback
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* @note The HAL_USART_RegisterCallback() may be called before HAL_USART_Init() in HAL_USART_STATE_RESET
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* to register callbacks for HAL_USART_MSPINIT_CB_ID and HAL_USART_MSPDEINIT_CB_ID
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* @param husart usart handle
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* @param CallbackID ID of the callback to be registered
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* This parameter can be one of the following values:
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* @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
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* @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID
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* @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
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* @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID
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* @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID
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* @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID
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* @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
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* @arg @ref HAL_USART_RX_FIFO_FULL_CB_ID Rx Fifo Full Callback ID
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* @arg @ref HAL_USART_TX_FIFO_EMPTY_CB_ID Tx Fifo Empty Callback ID
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* @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID
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* @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID
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* @param pCallback pointer to the Callback function
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* @retval HAL status
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+ */
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HAL_StatusTypeDef HAL_USART_RegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID,
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pUSART_CallbackTypeDef pCallback)
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{
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HAL_StatusTypeDef status = HAL_OK;
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if (pCallback == NULL)
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{
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/* Update the error code */
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husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
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return HAL_ERROR;
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}
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if (husart->State == HAL_USART_STATE_READY)
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{
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switch (CallbackID)
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{
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case HAL_USART_TX_HALFCOMPLETE_CB_ID :
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husart->TxHalfCpltCallback = pCallback;
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break;
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case HAL_USART_TX_COMPLETE_CB_ID :
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husart->TxCpltCallback = pCallback;
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break;
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case HAL_USART_RX_HALFCOMPLETE_CB_ID :
|
|
husart->RxHalfCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_RX_COMPLETE_CB_ID :
|
|
husart->RxCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_TX_RX_COMPLETE_CB_ID :
|
|
husart->TxRxCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_ERROR_CB_ID :
|
|
husart->ErrorCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_ABORT_COMPLETE_CB_ID :
|
|
husart->AbortCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_RX_FIFO_FULL_CB_ID :
|
|
husart->RxFifoFullCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_TX_FIFO_EMPTY_CB_ID :
|
|
husart->TxFifoEmptyCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_MSPINIT_CB_ID :
|
|
husart->MspInitCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_MSPDEINIT_CB_ID :
|
|
husart->MspDeInitCallback = pCallback;
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else if (husart->State == HAL_USART_STATE_RESET)
|
|
{
|
|
switch (CallbackID)
|
|
{
|
|
case HAL_USART_MSPINIT_CB_ID :
|
|
husart->MspInitCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_USART_MSPDEINIT_CB_ID :
|
|
husart->MspDeInitCallback = pCallback;
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Update the error code */
|
|
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Unregister an USART Callback
|
|
* USART callaback is redirected to the weak predefined callback
|
|
* @note The HAL_USART_UnRegisterCallback() may be called before HAL_USART_Init() in HAL_USART_STATE_RESET
|
|
* to un-register callbacks for HAL_USART_MSPINIT_CB_ID and HAL_USART_MSPDEINIT_CB_ID
|
|
* @param husart usart handle
|
|
* @param CallbackID ID of the callback to be unregistered
|
|
* This parameter can be one of the following values:
|
|
* @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
|
|
* @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID
|
|
* @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
|
|
* @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID
|
|
* @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID
|
|
* @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID
|
|
* @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
|
|
* @arg @ref HAL_USART_RX_FIFO_FULL_CB_ID Rx Fifo Full Callback ID
|
|
* @arg @ref HAL_USART_TX_FIFO_EMPTY_CB_ID Tx Fifo Empty Callback ID
|
|
* @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID
|
|
* @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_USART_UnRegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID)
|
|
{
|
|
HAL_StatusTypeDef status = HAL_OK;
|
|
|
|
if (HAL_USART_STATE_READY == husart->State)
|
|
{
|
|
switch (CallbackID)
|
|
{
|
|
case HAL_USART_TX_HALFCOMPLETE_CB_ID :
|
|
husart->TxHalfCpltCallback = HAL_USART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
|
|
break;
|
|
|
|
case HAL_USART_TX_COMPLETE_CB_ID :
|
|
husart->TxCpltCallback = HAL_USART_TxCpltCallback; /* Legacy weak TxCpltCallback */
|
|
break;
|
|
|
|
case HAL_USART_RX_HALFCOMPLETE_CB_ID :
|
|
husart->RxHalfCpltCallback = HAL_USART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
|
|
break;
|
|
|
|
case HAL_USART_RX_COMPLETE_CB_ID :
|
|
husart->RxCpltCallback = HAL_USART_RxCpltCallback; /* Legacy weak RxCpltCallback */
|
|
break;
|
|
|
|
case HAL_USART_TX_RX_COMPLETE_CB_ID :
|
|
husart->TxRxCpltCallback = HAL_USART_TxRxCpltCallback; /* Legacy weak TxRxCpltCallback */
|
|
break;
|
|
|
|
case HAL_USART_ERROR_CB_ID :
|
|
husart->ErrorCallback = HAL_USART_ErrorCallback; /* Legacy weak ErrorCallback */
|
|
break;
|
|
|
|
case HAL_USART_ABORT_COMPLETE_CB_ID :
|
|
husart->AbortCpltCallback = HAL_USART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
|
|
break;
|
|
|
|
case HAL_USART_RX_FIFO_FULL_CB_ID :
|
|
husart->RxFifoFullCallback = HAL_USARTEx_RxFifoFullCallback; /* Legacy weak RxFifoFullCallback */
|
|
break;
|
|
|
|
case HAL_USART_TX_FIFO_EMPTY_CB_ID :
|
|
husart->TxFifoEmptyCallback = HAL_USARTEx_TxFifoEmptyCallback; /* Legacy weak TxFifoEmptyCallback */
|
|
break;
|
|
|
|
case HAL_USART_MSPINIT_CB_ID :
|
|
husart->MspInitCallback = HAL_USART_MspInit; /* Legacy weak MspInitCallback */
|
|
break;
|
|
|
|
case HAL_USART_MSPDEINIT_CB_ID :
|
|
husart->MspDeInitCallback = HAL_USART_MspDeInit; /* Legacy weak MspDeInitCallback */
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else if (HAL_USART_STATE_RESET == husart->State)
|
|
{
|
|
switch (CallbackID)
|
|
{
|
|
case HAL_USART_MSPINIT_CB_ID :
|
|
husart->MspInitCallback = HAL_USART_MspInit;
|
|
break;
|
|
|
|
case HAL_USART_MSPDEINIT_CB_ID :
|
|
husart->MspDeInitCallback = HAL_USART_MspDeInit;
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Update the error code */
|
|
husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USART_Exported_Functions_Group2 IO operation functions
|
|
* @brief USART Transmit and Receive functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### IO operation functions #####
|
|
===============================================================================
|
|
[..] This subsection provides a set of functions allowing to manage the USART synchronous
|
|
data transfers.
|
|
|
|
[..] The USART supports master mode only: it cannot receive or send data related to an input
|
|
clock (SCLK is always an output).
|
|
|
|
[..]
|
|
|
|
(#) There are two modes of transfer:
|
|
(++) Blocking mode: The communication is performed in polling mode.
|
|
The HAL status of all data processing is returned by the same function
|
|
after finishing transfer.
|
|
(++) No-Blocking mode: The communication is performed using Interrupts
|
|
or DMA, These API's return the HAL status.
|
|
The end of the data processing will be indicated through the
|
|
dedicated USART IRQ when using Interrupt mode or the DMA IRQ when
|
|
using DMA mode.
|
|
The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() user callbacks
|
|
will be executed respectively at the end of the transmit or Receive process
|
|
The HAL_USART_ErrorCallback()user callback will be executed when a communication error is detected
|
|
|
|
(#) Blocking mode API's are :
|
|
(++) HAL_USART_Transmit() in simplex mode
|
|
(++) HAL_USART_Receive() in full duplex receive only
|
|
(++) HAL_USART_TransmitReceive() in full duplex mode
|
|
|
|
(#) Non-Blocking mode API's with Interrupt are :
|
|
(++) HAL_USART_Transmit_IT() in simplex mode
|
|
(++) HAL_USART_Receive_IT() in full duplex receive only
|
|
(++) HAL_USART_TransmitReceive_IT() in full duplex mode
|
|
(++) HAL_USART_IRQHandler()
|
|
|
|
(#) No-Blocking mode API's with DMA are :
|
|
(++) HAL_USART_Transmit_DMA() in simplex mode
|
|
(++) HAL_USART_Receive_DMA() in full duplex receive only
|
|
(++) HAL_USART_TransmitReceive_DMA() in full duplex mode
|
|
(++) HAL_USART_DMAPause()
|
|
(++) HAL_USART_DMAResume()
|
|
(++) HAL_USART_DMAStop()
|
|
|
|
(#) A set of Transfer Complete Callbacks are provided in Non_Blocking mode:
|
|
(++) HAL_USART_TxCpltCallback()
|
|
(++) HAL_USART_RxCpltCallback()
|
|
(++) HAL_USART_TxHalfCpltCallback()
|
|
(++) HAL_USART_RxHalfCpltCallback()
|
|
(++) HAL_USART_ErrorCallback()
|
|
(++) HAL_USART_TxRxCpltCallback()
|
|
|
|
(#) Non-Blocking mode transfers could be aborted using Abort API's :
|
|
(++) HAL_USART_Abort()
|
|
(++) HAL_USART_Abort_IT()
|
|
|
|
(#) For Abort services based on interrupts (HAL_USART_Abort_IT), a Abort Complete Callbacks is provided:
|
|
(++) HAL_USART_AbortCpltCallback()
|
|
|
|
(#) 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_USART_ErrorCallback() user callback is executed.
|
|
Transfer is kept ongoing on USART 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_USART_ErrorCallback() user callback is executed.
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Simplex send an amount of data in blocking mode.
|
|
* @note When USART 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 pTxData.
|
|
* @param husart USART handle.
|
|
* @param pTxData 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_USART_Transmit(USART_HandleTypeDef *husart, const uint8_t *pTxData, uint16_t Size,
|
|
uint32_t Timeout)
|
|
{
|
|
const uint8_t *ptxdata8bits;
|
|
const uint16_t *ptxdata16bits;
|
|
uint32_t tickstart;
|
|
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pTxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_TX;
|
|
|
|
/* Init tickstart for timeout management */
|
|
tickstart = HAL_GetTick();
|
|
|
|
husart->TxXferSize = Size;
|
|
husart->TxXferCount = Size;
|
|
|
|
/* In case of 9bits/No Parity transfer, pTxData needs to be handled as a uint16_t pointer */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
ptxdata8bits = NULL;
|
|
ptxdata16bits = (const uint16_t *) pTxData;
|
|
}
|
|
else
|
|
{
|
|
ptxdata8bits = pTxData;
|
|
ptxdata16bits = NULL;
|
|
}
|
|
|
|
/* Check the remaining data to be sent */
|
|
while (husart->TxXferCount > 0U)
|
|
{
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
if (ptxdata8bits == NULL)
|
|
{
|
|
husart->Instance->TDR = (uint16_t)(*ptxdata16bits & 0x01FFU);
|
|
ptxdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
husart->Instance->TDR = (uint8_t)(*ptxdata8bits & 0xFFU);
|
|
ptxdata8bits++;
|
|
}
|
|
|
|
husart->TxXferCount--;
|
|
}
|
|
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
|
|
/* Clear Transmission Complete Flag */
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF);
|
|
|
|
/* Clear overrun flag and discard the received data */
|
|
__HAL_USART_CLEAR_OREFLAG(husart);
|
|
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST);
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
|
|
/* At end of Tx process, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receive an amount of data in blocking mode.
|
|
* @note To receive synchronous data, dummy data are simultaneously transmitted.
|
|
* @note When USART 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 pRxData.
|
|
* @param husart USART handle.
|
|
* @param pRxData 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_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
|
|
{
|
|
uint8_t *prxdata8bits;
|
|
uint16_t *prxdata16bits;
|
|
uint16_t uhMask;
|
|
uint32_t tickstart;
|
|
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pRxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
|
|
|
/* Init tickstart for timeout management */
|
|
tickstart = HAL_GetTick();
|
|
|
|
husart->RxXferSize = Size;
|
|
husart->RxXferCount = Size;
|
|
|
|
/* Computation of USART mask to apply to RDR register */
|
|
USART_MASK_COMPUTATION(husart);
|
|
uhMask = husart->Mask;
|
|
|
|
/* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
prxdata8bits = NULL;
|
|
prxdata16bits = (uint16_t *) pRxData;
|
|
}
|
|
else
|
|
{
|
|
prxdata8bits = pRxData;
|
|
prxdata16bits = NULL;
|
|
}
|
|
|
|
/* as long as data have to be received */
|
|
while (husart->RxXferCount > 0U)
|
|
{
|
|
if (husart->SlaveMode == USART_SLAVEMODE_DISABLE)
|
|
{
|
|
/* Wait until TXE flag is set to send dummy byte in order to generate the
|
|
* clock for the slave to send data.
|
|
* Whatever the frame length (7, 8 or 9-bit long), the same dummy value
|
|
* can be written for all the cases. */
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x0FF);
|
|
}
|
|
|
|
/* Wait for RXNE Flag */
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
|
|
if (prxdata8bits == NULL)
|
|
{
|
|
*prxdata16bits = (uint16_t)(husart->Instance->RDR & uhMask);
|
|
prxdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
*prxdata8bits = (uint8_t)(husart->Instance->RDR & (uint8_t)(uhMask & 0xFFU));
|
|
prxdata8bits++;
|
|
}
|
|
|
|
husart->RxXferCount--;
|
|
|
|
}
|
|
|
|
/* Clear SPI slave underrun flag and discard transmit data */
|
|
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE)
|
|
{
|
|
__HAL_USART_CLEAR_UDRFLAG(husart);
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
}
|
|
|
|
/* At end of Rx process, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Full-Duplex Send and Receive an amount of data in blocking mode.
|
|
* @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number
|
|
* of u16 available through pTxData and through pRxData.
|
|
* @param husart USART handle.
|
|
* @param pTxData pointer to TX data buffer (u8 or u16 data elements).
|
|
* @param pRxData pointer to RX data buffer (u8 or u16 data elements).
|
|
* @param Size amount of data elements (u8 or u16) to be sent (same amount to be received).
|
|
* @param Timeout Timeout duration.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, const uint8_t *pTxData, uint8_t *pRxData,
|
|
uint16_t Size, uint32_t Timeout)
|
|
{
|
|
uint8_t *prxdata8bits;
|
|
uint16_t *prxdata16bits;
|
|
const uint8_t *ptxdata8bits;
|
|
const uint16_t *ptxdata16bits;
|
|
uint16_t uhMask;
|
|
uint16_t rxdatacount;
|
|
uint32_t tickstart;
|
|
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
|
|
|
/* Init tickstart for timeout management */
|
|
tickstart = HAL_GetTick();
|
|
|
|
husart->RxXferSize = Size;
|
|
husart->TxXferSize = Size;
|
|
husart->TxXferCount = Size;
|
|
husart->RxXferCount = Size;
|
|
|
|
/* Computation of USART mask to apply to RDR register */
|
|
USART_MASK_COMPUTATION(husart);
|
|
uhMask = husart->Mask;
|
|
|
|
/* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
prxdata8bits = NULL;
|
|
ptxdata8bits = NULL;
|
|
ptxdata16bits = (const uint16_t *) pTxData;
|
|
prxdata16bits = (uint16_t *) pRxData;
|
|
}
|
|
else
|
|
{
|
|
prxdata8bits = pRxData;
|
|
ptxdata8bits = pTxData;
|
|
ptxdata16bits = NULL;
|
|
prxdata16bits = NULL;
|
|
}
|
|
|
|
if ((husart->TxXferCount == 0x01U) || (husart->SlaveMode == USART_SLAVEMODE_ENABLE))
|
|
{
|
|
/* Wait until TXE flag is set to send data */
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
if (ptxdata8bits == NULL)
|
|
{
|
|
husart->Instance->TDR = (uint16_t)(*ptxdata16bits & uhMask);
|
|
ptxdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
husart->Instance->TDR = (uint8_t)(*ptxdata8bits & (uint8_t)(uhMask & 0xFFU));
|
|
ptxdata8bits++;
|
|
}
|
|
|
|
husart->TxXferCount--;
|
|
}
|
|
|
|
/* Check the remain data to be sent */
|
|
/* rxdatacount is a temporary variable for MISRAC2012-Rule-13.5 */
|
|
rxdatacount = husart->RxXferCount;
|
|
while ((husart->TxXferCount > 0U) || (rxdatacount > 0U))
|
|
{
|
|
if (husart->TxXferCount > 0U)
|
|
{
|
|
/* Wait until TXE flag is set to send data */
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
if (ptxdata8bits == NULL)
|
|
{
|
|
husart->Instance->TDR = (uint16_t)(*ptxdata16bits & uhMask);
|
|
ptxdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
husart->Instance->TDR = (uint8_t)(*ptxdata8bits & (uint8_t)(uhMask & 0xFFU));
|
|
ptxdata8bits++;
|
|
}
|
|
|
|
husart->TxXferCount--;
|
|
}
|
|
|
|
if (husart->RxXferCount > 0U)
|
|
{
|
|
/* Wait for RXNE Flag */
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
return HAL_TIMEOUT;
|
|
}
|
|
|
|
if (prxdata8bits == NULL)
|
|
{
|
|
*prxdata16bits = (uint16_t)(husart->Instance->RDR & uhMask);
|
|
prxdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
*prxdata8bits = (uint8_t)(husart->Instance->RDR & (uint8_t)(uhMask & 0xFFU));
|
|
prxdata8bits++;
|
|
}
|
|
|
|
husart->RxXferCount--;
|
|
}
|
|
rxdatacount = husart->RxXferCount;
|
|
}
|
|
|
|
/* At end of TxRx process, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Send an amount of data in interrupt mode.
|
|
* @note When USART 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 pTxData.
|
|
* @param husart USART handle.
|
|
* @param pTxData 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_USART_Transmit_IT(USART_HandleTypeDef *husart, const uint8_t *pTxData, uint16_t Size)
|
|
{
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pTxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->pTxBuffPtr = pTxData;
|
|
husart->TxXferSize = Size;
|
|
husart->TxXferCount = Size;
|
|
husart->TxISR = NULL;
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_TX;
|
|
|
|
/* The USART Error Interrupts: (Frame error, noise error, overrun error)
|
|
are not managed by the USART Transmit Process to avoid the overrun interrupt
|
|
when the usart mode is configured for transmit and receive "USART_MODE_TX_RX"
|
|
to benefit for the frame error and noise interrupts the usart mode should be
|
|
configured only for transmit "USART_MODE_TX" */
|
|
|
|
/* Configure Tx interrupt processing */
|
|
if (husart->FifoMode == USART_FIFOMODE_ENABLE)
|
|
{
|
|
/* Set the Tx ISR function pointer according to the data word length */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
husart->TxISR = USART_TxISR_16BIT_FIFOEN;
|
|
}
|
|
else
|
|
{
|
|
husart->TxISR = USART_TxISR_8BIT_FIFOEN;
|
|
}
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Enable the TX FIFO threshold interrupt */
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TXFT);
|
|
}
|
|
else
|
|
{
|
|
/* Set the Tx ISR function pointer according to the data word length */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
husart->TxISR = USART_TxISR_16BIT;
|
|
}
|
|
else
|
|
{
|
|
husart->TxISR = USART_TxISR_8BIT;
|
|
}
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Enable the USART Transmit Data Register Empty Interrupt */
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receive an amount of data in interrupt mode.
|
|
* @note To receive synchronous data, dummy data are simultaneously transmitted.
|
|
* @note When USART 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 pRxData.
|
|
* @param husart USART handle.
|
|
* @param pRxData 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_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
|
|
{
|
|
uint16_t nb_dummy_data;
|
|
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pRxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->pRxBuffPtr = pRxData;
|
|
husart->RxXferSize = Size;
|
|
husart->RxXferCount = Size;
|
|
husart->RxISR = NULL;
|
|
|
|
USART_MASK_COMPUTATION(husart);
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
|
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Configure Rx interrupt processing */
|
|
if ((husart->FifoMode == USART_FIFOMODE_ENABLE) && (Size >= husart->NbRxDataToProcess))
|
|
{
|
|
/* Set the Rx ISR function pointer according to the data word length */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
husart->RxISR = USART_RxISR_16BIT_FIFOEN;
|
|
}
|
|
else
|
|
{
|
|
husart->RxISR = USART_RxISR_8BIT_FIFOEN;
|
|
}
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Enable the USART Parity Error interrupt and RX FIFO Threshold interrupt */
|
|
if (husart->Init.Parity != USART_PARITY_NONE)
|
|
{
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
}
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_RXFTIE);
|
|
}
|
|
else
|
|
{
|
|
/* Set the Rx ISR function pointer according to the data word length */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
husart->RxISR = USART_RxISR_16BIT;
|
|
}
|
|
else
|
|
{
|
|
husart->RxISR = USART_RxISR_8BIT;
|
|
}
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Enable the USART Parity Error and Data Register not empty Interrupts */
|
|
if (husart->Init.Parity != USART_PARITY_NONE)
|
|
{
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE);
|
|
}
|
|
else
|
|
{
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE);
|
|
}
|
|
}
|
|
|
|
if (husart->SlaveMode == USART_SLAVEMODE_DISABLE)
|
|
{
|
|
/* Send dummy data in order to generate the clock for the Slave to send the next data.
|
|
When FIFO mode is disabled only one data must be transferred.
|
|
When FIFO mode is enabled data must be transmitted until the RX FIFO reaches its threshold.
|
|
*/
|
|
if ((husart->FifoMode == USART_FIFOMODE_ENABLE) && (Size >= husart->NbRxDataToProcess))
|
|
{
|
|
for (nb_dummy_data = husart->NbRxDataToProcess ; nb_dummy_data > 0U ; nb_dummy_data--)
|
|
{
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Full-Duplex Send and Receive an amount of data in interrupt mode.
|
|
* @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number
|
|
* of u16 available through pTxData and through pRxData.
|
|
* @param husart USART handle.
|
|
* @param pTxData pointer to TX data buffer (u8 or u16 data elements).
|
|
* @param pRxData pointer to RX data buffer (u8 or u16 data elements).
|
|
* @param Size amount of data elements (u8 or u16) to be sent (same amount to be received).
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, const uint8_t *pTxData, uint8_t *pRxData,
|
|
uint16_t Size)
|
|
{
|
|
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->pRxBuffPtr = pRxData;
|
|
husart->RxXferSize = Size;
|
|
husart->RxXferCount = Size;
|
|
husart->pTxBuffPtr = pTxData;
|
|
husart->TxXferSize = Size;
|
|
husart->TxXferCount = Size;
|
|
|
|
/* Computation of USART mask to apply to RDR register */
|
|
USART_MASK_COMPUTATION(husart);
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_TX_RX;
|
|
|
|
/* Configure TxRx interrupt processing */
|
|
if ((husart->FifoMode == USART_FIFOMODE_ENABLE) && (Size >= husart->NbRxDataToProcess))
|
|
{
|
|
/* Set the Rx ISR function pointer according to the data word length */
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
husart->TxISR = USART_TxISR_16BIT_FIFOEN;
|
|
husart->RxISR = USART_RxISR_16BIT_FIFOEN;
|
|
}
|
|
else
|
|
{
|
|
husart->TxISR = USART_TxISR_8BIT_FIFOEN;
|
|
husart->RxISR = USART_RxISR_8BIT_FIFOEN;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
if (husart->Init.Parity != USART_PARITY_NONE)
|
|
{
|
|
/* Enable the USART Parity Error interrupt */
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
}
|
|
|
|
/* Enable the TX and RX FIFO Threshold interrupts */
|
|
SET_BIT(husart->Instance->CR3, (USART_CR3_TXFTIE | USART_CR3_RXFTIE));
|
|
}
|
|
else
|
|
{
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
|
{
|
|
husart->TxISR = USART_TxISR_16BIT;
|
|
husart->RxISR = USART_RxISR_16BIT;
|
|
}
|
|
else
|
|
{
|
|
husart->TxISR = USART_TxISR_8BIT;
|
|
husart->RxISR = USART_RxISR_8BIT;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Enable the USART Parity Error and USART Data Register not empty Interrupts */
|
|
if (husart->Init.Parity != USART_PARITY_NONE)
|
|
{
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE_RXFNEIE);
|
|
}
|
|
else
|
|
{
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE);
|
|
}
|
|
|
|
/* Enable the USART Transmit Data Register Empty Interrupt */
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE_TXFNFIE);
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Send an amount of data in DMA mode.
|
|
* @note When USART 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 pTxData.
|
|
* @param husart USART handle.
|
|
* @param pTxData 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_USART_Transmit_DMA(USART_HandleTypeDef *husart, const uint8_t *pTxData, uint16_t Size)
|
|
{
|
|
HAL_StatusTypeDef status = HAL_OK;
|
|
const uint32_t *tmp;
|
|
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pTxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->pTxBuffPtr = pTxData;
|
|
husart->TxXferSize = Size;
|
|
husart->TxXferCount = Size;
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_TX;
|
|
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
/* Set the USART DMA transfer complete callback */
|
|
husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
|
|
|
|
/* Set the USART DMA Half transfer complete callback */
|
|
husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
|
|
|
|
/* Set the DMA error callback */
|
|
husart->hdmatx->XferErrorCallback = USART_DMAError;
|
|
|
|
/* Enable the USART transmit DMA channel */
|
|
tmp = (const uint32_t *)&pTxData;
|
|
status = HAL_DMA_Start_IT(husart->hdmatx, *(const uint32_t *)tmp, (uint32_t)&husart->Instance->TDR, Size);
|
|
}
|
|
|
|
if (status == HAL_OK)
|
|
{
|
|
/* Clear the TC flag in the ICR register */
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF);
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
|
in the USART CR3 register */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
/* Set error code to DMA */
|
|
husart->ErrorCode = HAL_USART_ERROR_DMA;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Restore husart->State to ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receive an amount of data in DMA mode.
|
|
* @note When the USART parity is enabled (PCE = 1), the received data contain
|
|
* the parity bit (MSB position).
|
|
* @note The USART DMA transmit channel must be configured in order to generate the clock for the slave.
|
|
* @note When USART 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 pRxData.
|
|
* @param husart USART handle.
|
|
* @param pRxData 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_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
|
|
{
|
|
HAL_StatusTypeDef status = HAL_OK;
|
|
uint32_t *tmp = (uint32_t *)&pRxData;
|
|
|
|
/* Check that a Rx process is not already ongoing */
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pRxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->pRxBuffPtr = pRxData;
|
|
husart->RxXferSize = Size;
|
|
husart->pTxBuffPtr = pRxData;
|
|
husart->TxXferSize = Size;
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
|
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
/* Set the USART DMA Rx transfer complete callback */
|
|
husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
|
|
|
|
/* Set the USART DMA Half transfer complete callback */
|
|
husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
|
|
|
|
/* Set the USART DMA Rx transfer error callback */
|
|
husart->hdmarx->XferErrorCallback = USART_DMAError;
|
|
|
|
/* Enable the USART receive DMA channel */
|
|
status = HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(uint32_t *)tmp, Size);
|
|
}
|
|
|
|
if ((status == HAL_OK) &&
|
|
(husart->SlaveMode == USART_SLAVEMODE_DISABLE))
|
|
{
|
|
/* Enable the USART transmit DMA channel: the transmit channel is used in order
|
|
to generate in the non-blocking mode the clock to the slave device,
|
|
this mode isn't a simplex receive mode but a full-duplex receive mode */
|
|
|
|
/* Set the USART DMA Tx Complete and Error callback to Null */
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
husart->hdmatx->XferErrorCallback = NULL;
|
|
husart->hdmatx->XferHalfCpltCallback = NULL;
|
|
husart->hdmatx->XferCpltCallback = NULL;
|
|
status = HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->TDR, Size);
|
|
}
|
|
}
|
|
|
|
if (status == HAL_OK)
|
|
{
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
if (husart->Init.Parity != USART_PARITY_NONE)
|
|
{
|
|
/* Enable the USART Parity Error Interrupt */
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
}
|
|
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
|
in the USART CR3 register */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
|
in the USART CR3 register */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
status = HAL_DMA_Abort(husart->hdmarx);
|
|
}
|
|
|
|
/* No need to check on error code */
|
|
UNUSED(status);
|
|
|
|
/* Set error code to DMA */
|
|
husart->ErrorCode = HAL_USART_ERROR_DMA;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Restore husart->State to ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Full-Duplex Transmit Receive an amount of data in non-blocking mode.
|
|
* @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
|
|
* @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number
|
|
* of u16 available through pTxData and through pRxData.
|
|
* @param husart USART handle.
|
|
* @param pTxData pointer to TX data buffer (u8 or u16 data elements).
|
|
* @param pRxData pointer to RX data buffer (u8 or u16 data elements).
|
|
* @param Size amount of data elements (u8 or u16) to be received/sent.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, const uint8_t *pTxData, uint8_t *pRxData,
|
|
uint16_t Size)
|
|
{
|
|
HAL_StatusTypeDef status;
|
|
const uint32_t *tmp;
|
|
|
|
if (husart->State == HAL_USART_STATE_READY)
|
|
{
|
|
if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
husart->pRxBuffPtr = pRxData;
|
|
husart->RxXferSize = Size;
|
|
husart->pTxBuffPtr = pTxData;
|
|
husart->TxXferSize = Size;
|
|
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
husart->State = HAL_USART_STATE_BUSY_TX_RX;
|
|
|
|
if ((husart->hdmarx != NULL) && (husart->hdmatx != NULL))
|
|
{
|
|
/* Set the USART DMA Rx transfer complete callback */
|
|
husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
|
|
|
|
/* Set the USART DMA Half transfer complete callback */
|
|
husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
|
|
|
|
/* Set the USART DMA Tx transfer complete callback */
|
|
husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
|
|
|
|
/* Set the USART DMA Half transfer complete callback */
|
|
husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
|
|
|
|
/* Set the USART DMA Tx transfer error callback */
|
|
husart->hdmatx->XferErrorCallback = USART_DMAError;
|
|
|
|
/* Set the USART DMA Rx transfer error callback */
|
|
husart->hdmarx->XferErrorCallback = USART_DMAError;
|
|
|
|
/* Enable the USART receive DMA channel */
|
|
tmp = (uint32_t *)&pRxData;
|
|
status = HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(const uint32_t *)tmp, Size);
|
|
|
|
/* Enable the USART transmit DMA channel */
|
|
if (status == HAL_OK)
|
|
{
|
|
tmp = (const uint32_t *)&pTxData;
|
|
status = HAL_DMA_Start_IT(husart->hdmatx, *(const uint32_t *)tmp, (uint32_t)&husart->Instance->TDR, Size);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
if (status == HAL_OK)
|
|
{
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
if (husart->Init.Parity != USART_PARITY_NONE)
|
|
{
|
|
/* Enable the USART Parity Error Interrupt */
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
}
|
|
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Clear the TC flag in the ICR register */
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF);
|
|
|
|
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
|
in the USART CR3 register */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
|
in the USART CR3 register */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
status = HAL_DMA_Abort(husart->hdmarx);
|
|
}
|
|
|
|
/* No need to check on error code */
|
|
UNUSED(status);
|
|
|
|
/* Set error code to DMA */
|
|
husart->ErrorCode = HAL_USART_ERROR_DMA;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
/* Restore husart->State to ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Pause the DMA Transfer.
|
|
* @param husart USART handle.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
if ((HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) &&
|
|
(state == HAL_USART_STATE_BUSY_TX))
|
|
{
|
|
/* Disable the USART DMA Tx request */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
}
|
|
else if ((state == HAL_USART_STATE_BUSY_RX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
/* Disable the USART DMA Tx request */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
}
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Disable the USART DMA Rx request */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Resume the DMA Transfer.
|
|
* @param husart USART handle.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(husart);
|
|
|
|
if (state == HAL_USART_STATE_BUSY_TX)
|
|
{
|
|
/* Enable the USART DMA Tx request */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
}
|
|
else if ((state == HAL_USART_STATE_BUSY_RX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
/* Clear the Overrun flag before resuming the Rx transfer*/
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF);
|
|
|
|
/* Re-enable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
if (husart->Init.Parity != USART_PARITY_NONE)
|
|
{
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
}
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Enable the USART DMA Rx request before the DMA Tx request */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Enable the USART DMA Tx request */
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Stop the DMA Transfer.
|
|
* @param husart USART handle.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart)
|
|
{
|
|
/* The Lock is not implemented on this API to allow the user application
|
|
to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback() /
|
|
HAL_USART_TxHalfCpltCallback / HAL_USART_RxHalfCpltCallback:
|
|
indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete
|
|
interrupt is generated if the DMA transfer interruption occurs at the middle or at the end of
|
|
the stream and the corresponding call back is executed. */
|
|
|
|
/* Disable the USART Tx/Rx DMA requests */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the USART DMA tx channel */
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
if (HAL_DMA_Abort(husart->hdmatx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(husart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
husart->ErrorCode = HAL_USART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
/* Abort the USART DMA rx channel */
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
if (HAL_DMA_Abort(husart->hdmarx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(husart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
husart->ErrorCode = HAL_USART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
|
|
USART_EndTransfer(husart);
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing transfers (blocking mode).
|
|
* @param husart USART handle.
|
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable USART 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_USART_Abort(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Disable TXEIE, TCIE, RXNE, RXFT, TXFT, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE |
|
|
USART_CR1_TCIE));
|
|
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE));
|
|
|
|
/* Abort the USART DMA Tx channel if enabled */
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
/* Disable the USART DMA Tx request if enabled */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Abort the USART DMA Tx channel : use blocking DMA Abort API (no callback) */
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
/* Set the USART DMA Abort callback to Null.
|
|
No call back execution at end of DMA abort procedure */
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
|
|
|
if (HAL_DMA_Abort(husart->hdmatx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(husart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
husart->ErrorCode = HAL_USART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Abort the USART DMA Rx channel if enabled */
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
/* Disable the USART DMA Rx request if enabled */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the USART DMA Rx channel : use blocking DMA Abort API (no callback) */
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
/* Set the USART DMA Abort callback to Null.
|
|
No call back execution at end of DMA abort procedure */
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
|
|
|
if (HAL_DMA_Abort(husart->hdmarx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(husart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
husart->ErrorCode = HAL_USART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Reset Tx and Rx transfer counters */
|
|
husart->TxXferCount = 0U;
|
|
husart->RxXferCount = 0U;
|
|
|
|
/* Clear the Error flags in the ICR register */
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
|
|
|
/* Flush the whole TX FIFO (if needed) */
|
|
if (husart->FifoMode == USART_FIFOMODE_ENABLE)
|
|
{
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
}
|
|
|
|
/* Discard the received data */
|
|
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST);
|
|
|
|
/* Restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Reset Handle ErrorCode to No Error */
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing transfers (Interrupt mode).
|
|
* @param husart USART handle.
|
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable USART 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_USART_Abort_IT(USART_HandleTypeDef *husart)
|
|
{
|
|
uint32_t abortcplt = 1U;
|
|
|
|
/* Disable TXEIE, TCIE, RXNE, RXFT, TXFT, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE |
|
|
USART_CR1_TCIE));
|
|
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE));
|
|
|
|
/* If DMA Tx and/or DMA Rx Handles are associated to USART Handle, DMA Abort complete callbacks should be initialised
|
|
before any call to DMA Abort functions */
|
|
/* DMA Tx Handle is valid */
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
/* Set DMA Abort Complete callback if USART DMA Tx request if enabled.
|
|
Otherwise, set it to NULL */
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
husart->hdmatx->XferAbortCallback = USART_DMATxAbortCallback;
|
|
}
|
|
else
|
|
{
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
|
}
|
|
}
|
|
/* DMA Rx Handle is valid */
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
/* Set DMA Abort Complete callback if USART DMA Rx request if enabled.
|
|
Otherwise, set it to NULL */
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
husart->hdmarx->XferAbortCallback = USART_DMARxAbortCallback;
|
|
}
|
|
else
|
|
{
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
|
}
|
|
}
|
|
|
|
/* Abort the USART DMA Tx channel if enabled */
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
/* Disable DMA Tx at USART level */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Abort the USART DMA Tx channel : use non blocking DMA Abort API (callback) */
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
/* USART Tx DMA Abort callback has already been initialised :
|
|
will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */
|
|
|
|
/* Abort DMA TX */
|
|
if (HAL_DMA_Abort_IT(husart->hdmatx) != HAL_OK)
|
|
{
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
|
}
|
|
else
|
|
{
|
|
abortcplt = 0U;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Abort the USART DMA Rx channel if enabled */
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
/* Disable the USART DMA Rx request if enabled */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the USART DMA Rx channel : use non blocking DMA Abort API (callback) */
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
/* USART Rx DMA Abort callback has already been initialised :
|
|
will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */
|
|
|
|
/* Abort DMA RX */
|
|
if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
|
|
{
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
|
abortcplt = 1U;
|
|
}
|
|
else
|
|
{
|
|
abortcplt = 0U;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* if no DMA abort complete callback execution is required => call user Abort Complete callback */
|
|
if (abortcplt == 1U)
|
|
{
|
|
/* Reset Tx and Rx transfer counters */
|
|
husart->TxXferCount = 0U;
|
|
husart->RxXferCount = 0U;
|
|
|
|
/* Reset errorCode */
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
|
|
/* Clear the Error flags in the ICR register */
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
|
|
|
/* Flush the whole TX FIFO (if needed) */
|
|
if (husart->FifoMode == USART_FIFOMODE_ENABLE)
|
|
{
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
}
|
|
|
|
/* Discard the received data */
|
|
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST);
|
|
|
|
/* Restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Complete Callback */
|
|
husart->AbortCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Abort Complete Callback */
|
|
HAL_USART_AbortCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Handle USART interrupt request.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
void HAL_USART_IRQHandler(USART_HandleTypeDef *husart)
|
|
{
|
|
uint32_t isrflags = READ_REG(husart->Instance->ISR);
|
|
uint32_t cr1its = READ_REG(husart->Instance->CR1);
|
|
uint32_t cr3its = READ_REG(husart->Instance->CR3);
|
|
|
|
uint32_t errorflags;
|
|
uint32_t errorcode;
|
|
|
|
/* If no error occurs */
|
|
errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE | USART_ISR_RTOF |
|
|
USART_ISR_UDR));
|
|
if (errorflags == 0U)
|
|
{
|
|
/* USART in mode Receiver ---------------------------------------------------*/
|
|
if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U)
|
|
&& (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U)
|
|
|| ((cr3its & USART_CR3_RXFTIE) != 0U)))
|
|
{
|
|
if (husart->RxISR != NULL)
|
|
{
|
|
husart->RxISR(husart);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* If some errors occur */
|
|
if ((errorflags != 0U)
|
|
&& (((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U)
|
|
|| ((cr1its & (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE)) != 0U)))
|
|
{
|
|
/* USART parity error interrupt occurred -------------------------------------*/
|
|
if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U))
|
|
{
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_PEF);
|
|
|
|
husart->ErrorCode |= HAL_USART_ERROR_PE;
|
|
}
|
|
|
|
/* USART frame error interrupt occurred --------------------------------------*/
|
|
if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
|
|
{
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_FEF);
|
|
|
|
husart->ErrorCode |= HAL_USART_ERROR_FE;
|
|
}
|
|
|
|
/* USART noise error interrupt occurred --------------------------------------*/
|
|
if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
|
|
{
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_NEF);
|
|
|
|
husart->ErrorCode |= HAL_USART_ERROR_NE;
|
|
}
|
|
|
|
/* USART Over-Run interrupt occurred -----------------------------------------*/
|
|
if (((isrflags & USART_ISR_ORE) != 0U)
|
|
&& (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) ||
|
|
((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U)))
|
|
{
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_OREF);
|
|
|
|
husart->ErrorCode |= HAL_USART_ERROR_ORE;
|
|
}
|
|
|
|
/* USART Receiver Timeout interrupt occurred ---------------------------------*/
|
|
if (((isrflags & USART_ISR_RTOF) != 0U) && ((cr1its & USART_CR1_RTOIE) != 0U))
|
|
{
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_RTOF);
|
|
|
|
husart->ErrorCode |= HAL_USART_ERROR_RTO;
|
|
}
|
|
|
|
/* USART SPI slave underrun error interrupt occurred -------------------------*/
|
|
if (((isrflags & USART_ISR_UDR) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
|
|
{
|
|
/* Ignore SPI slave underrun errors when reception is going on */
|
|
if (husart->State == HAL_USART_STATE_BUSY_RX)
|
|
{
|
|
__HAL_USART_CLEAR_UDRFLAG(husart);
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
__HAL_USART_CLEAR_UDRFLAG(husart);
|
|
husart->ErrorCode |= HAL_USART_ERROR_UDR;
|
|
}
|
|
}
|
|
|
|
/* Call USART Error Call back function if need be --------------------------*/
|
|
if (husart->ErrorCode != HAL_USART_ERROR_NONE)
|
|
{
|
|
/* USART in mode Receiver ---------------------------------------------------*/
|
|
if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U)
|
|
&& (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U)
|
|
|| ((cr3its & USART_CR3_RXFTIE) != 0U)))
|
|
{
|
|
if (husart->RxISR != NULL)
|
|
{
|
|
husart->RxISR(husart);
|
|
}
|
|
}
|
|
|
|
/* If Overrun error occurs, or if any error occurs in DMA mode reception,
|
|
consider error as blocking */
|
|
errorcode = husart->ErrorCode & HAL_USART_ERROR_ORE;
|
|
if ((HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) ||
|
|
(errorcode != 0U))
|
|
{
|
|
/* Blocking error : transfer is aborted
|
|
Set the USART state ready to be able to start again the process,
|
|
Disable Interrupts, and disable DMA requests, if ongoing */
|
|
USART_EndTransfer(husart);
|
|
|
|
/* Abort the USART DMA Rx channel if enabled */
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
/* Disable the USART DMA Rx request if enabled */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR | USART_CR3_DMAR);
|
|
|
|
/* Abort the USART DMA Tx channel */
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
/* Set the USART Tx DMA Abort callback to NULL : no callback
|
|
executed at end of DMA abort procedure */
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
|
|
|
/* Abort DMA TX */
|
|
(void)HAL_DMA_Abort_IT(husart->hdmatx);
|
|
}
|
|
|
|
/* Abort the USART DMA Rx channel */
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
/* Set the USART Rx DMA Abort callback :
|
|
will lead to call HAL_USART_ErrorCallback() at end of DMA abort procedure */
|
|
husart->hdmarx->XferAbortCallback = USART_DMAAbortOnError;
|
|
|
|
/* Abort DMA RX */
|
|
if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
|
|
{
|
|
/* Call Directly husart->hdmarx->XferAbortCallback function in case of error */
|
|
husart->hdmarx->XferAbortCallback(husart->hdmarx);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Call user error callback */
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Error Callback */
|
|
husart->ErrorCallback(husart);
|
|
#else
|
|
/* Call legacy weak Error Callback */
|
|
HAL_USART_ErrorCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Call user error callback */
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Error Callback */
|
|
husart->ErrorCallback(husart);
|
|
#else
|
|
/* Call legacy weak Error Callback */
|
|
HAL_USART_ErrorCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Non Blocking error : transfer could go on.
|
|
Error is notified to user through user error callback */
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Error Callback */
|
|
husart->ErrorCallback(husart);
|
|
#else
|
|
/* Call legacy weak Error Callback */
|
|
HAL_USART_ErrorCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
}
|
|
}
|
|
return;
|
|
|
|
} /* End if some error occurs */
|
|
|
|
|
|
/* USART in mode Transmitter ------------------------------------------------*/
|
|
if (((isrflags & USART_ISR_TXE_TXFNF) != 0U)
|
|
&& (((cr1its & USART_CR1_TXEIE_TXFNFIE) != 0U)
|
|
|| ((cr3its & USART_CR3_TXFTIE) != 0U)))
|
|
{
|
|
if (husart->TxISR != NULL)
|
|
{
|
|
husart->TxISR(husart);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* USART in mode Transmitter (transmission end) -----------------------------*/
|
|
if (((isrflags & USART_ISR_TC) != 0U) && ((cr1its & USART_CR1_TCIE) != 0U))
|
|
{
|
|
USART_EndTransmit_IT(husart);
|
|
return;
|
|
}
|
|
|
|
/* USART TX Fifo Empty occurred ----------------------------------------------*/
|
|
if (((isrflags & USART_ISR_TXFE) != 0U) && ((cr1its & USART_CR1_TXFEIE) != 0U))
|
|
{
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Fifo Empty Callback */
|
|
husart->TxFifoEmptyCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Fifo Empty Callback */
|
|
HAL_USARTEx_TxFifoEmptyCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
return;
|
|
}
|
|
|
|
/* USART RX Fifo Full occurred ----------------------------------------------*/
|
|
if (((isrflags & USART_ISR_RXFF) != 0U) && ((cr1its & USART_CR1_RXFFIE) != 0U))
|
|
{
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Fifo Full Callback */
|
|
husart->RxFifoFullCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Fifo Full Callback */
|
|
HAL_USARTEx_RxFifoFullCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Tx Transfer completed callback.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(husart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_USART_TxCpltCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Tx Half Transfer completed callback.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(husart);
|
|
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_USART_TxHalfCpltCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Rx Transfer completed callback.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(husart);
|
|
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_USART_RxCpltCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Rx Half Transfer completed callback.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(husart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_USART_RxHalfCpltCallback can be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Tx/Rx Transfers completed callback for the non-blocking process.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(husart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_USART_TxRxCpltCallback can be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief USART error callback.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(husart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_USART_ErrorCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief USART Abort Complete callback.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_USART_AbortCpltCallback(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(husart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_USART_AbortCpltCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USART_Exported_Functions_Group4 Peripheral State and Error functions
|
|
* @brief USART Peripheral State and Error functions
|
|
*
|
|
@verbatim
|
|
==============================================================================
|
|
##### Peripheral State and Error functions #####
|
|
==============================================================================
|
|
[..]
|
|
This subsection provides functions allowing to :
|
|
(+) Return the USART handle state
|
|
(+) Return the USART handle error code
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
|
|
/**
|
|
* @brief Return the USART handle state.
|
|
* @param husart pointer to a USART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified USART.
|
|
* @retval USART handle state
|
|
*/
|
|
HAL_USART_StateTypeDef HAL_USART_GetState(const USART_HandleTypeDef *husart)
|
|
{
|
|
return husart->State;
|
|
}
|
|
|
|
/**
|
|
* @brief Return the USART error code.
|
|
* @param husart pointer to a USART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified USART.
|
|
* @retval USART handle Error Code
|
|
*/
|
|
uint32_t HAL_USART_GetError(const USART_HandleTypeDef *husart)
|
|
{
|
|
return husart->ErrorCode;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup USART_Private_Functions USART Private Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Initialize the callbacks to their default values.
|
|
* @param husart USART handle.
|
|
* @retval none
|
|
*/
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Init the USART Callback settings */
|
|
husart->TxHalfCpltCallback = HAL_USART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
|
|
husart->TxCpltCallback = HAL_USART_TxCpltCallback; /* Legacy weak TxCpltCallback */
|
|
husart->RxHalfCpltCallback = HAL_USART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
|
|
husart->RxCpltCallback = HAL_USART_RxCpltCallback; /* Legacy weak RxCpltCallback */
|
|
husart->TxRxCpltCallback = HAL_USART_TxRxCpltCallback; /* Legacy weak TxRxCpltCallback */
|
|
husart->ErrorCallback = HAL_USART_ErrorCallback; /* Legacy weak ErrorCallback */
|
|
husart->AbortCpltCallback = HAL_USART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
|
|
husart->RxFifoFullCallback = HAL_USARTEx_RxFifoFullCallback; /* Legacy weak RxFifoFullCallback */
|
|
husart->TxFifoEmptyCallback = HAL_USARTEx_TxFifoEmptyCallback; /* Legacy weak TxFifoEmptyCallback */
|
|
}
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
|
|
/**
|
|
* @brief End ongoing transfer on USART peripheral (following error detection or Transfer completion).
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_EndTransfer(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Disable TXEIE, TCIE, RXNE, RXFT, TXFT, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE | USART_CR1_TXEIE_TXFNFIE |
|
|
USART_CR1_TCIE));
|
|
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE | USART_CR3_TXFTIE));
|
|
|
|
/* At end of process, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
}
|
|
|
|
/**
|
|
* @brief DMA USART transmit process complete callback.
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
|
|
/* DMA Normal mode */
|
|
if (hdma->Init.Mode != DMA_CIRCULAR)
|
|
{
|
|
husart->TxXferCount = 0U;
|
|
|
|
if (husart->State == HAL_USART_STATE_BUSY_TX)
|
|
{
|
|
/* Disable the DMA transfer for transmit request by resetting the DMAT bit
|
|
in the USART CR3 register */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Enable the USART Transmit Complete Interrupt */
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
|
}
|
|
}
|
|
/* DMA Circular mode */
|
|
else
|
|
{
|
|
if (husart->State == HAL_USART_STATE_BUSY_TX)
|
|
{
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Complete Callback */
|
|
husart->TxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Complete Callback */
|
|
HAL_USART_TxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief DMA USART transmit process half complete callback.
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Half Complete Callback */
|
|
husart->TxHalfCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Half Complete Callback */
|
|
HAL_USART_TxHalfCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA USART receive process complete callback.
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
|
|
/* DMA Normal mode */
|
|
if (hdma->Init.Mode != DMA_CIRCULAR)
|
|
{
|
|
husart->RxXferCount = 0U;
|
|
|
|
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Disable the DMA RX transfer for the receiver request by resetting the DMAR bit
|
|
in USART CR3 register */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
|
/* similarly, disable the DMA TX transfer that was started to provide the
|
|
clock to the slave device */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
if (husart->State == HAL_USART_STATE_BUSY_RX)
|
|
{
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Complete Callback */
|
|
husart->RxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Complete Callback */
|
|
HAL_USART_RxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
/* The USART state is HAL_USART_STATE_BUSY_TX_RX */
|
|
else
|
|
{
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Rx Complete Callback */
|
|
husart->TxRxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Rx Complete Callback */
|
|
HAL_USART_TxRxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
husart->State = HAL_USART_STATE_READY;
|
|
}
|
|
/* DMA circular mode */
|
|
else
|
|
{
|
|
if (husart->State == HAL_USART_STATE_BUSY_RX)
|
|
{
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Complete Callback */
|
|
husart->RxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Complete Callback */
|
|
HAL_USART_RxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
/* The USART state is HAL_USART_STATE_BUSY_TX_RX */
|
|
else
|
|
{
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Rx Complete Callback */
|
|
husart->TxRxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Rx Complete Callback */
|
|
HAL_USART_TxRxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief DMA USART receive process half complete callback.
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Half Complete Callback */
|
|
husart->RxHalfCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Half Complete Callback */
|
|
HAL_USART_RxHalfCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA USART communication error callback.
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMAError(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
|
|
husart->RxXferCount = 0U;
|
|
husart->TxXferCount = 0U;
|
|
USART_EndTransfer(husart);
|
|
|
|
husart->ErrorCode |= HAL_USART_ERROR_DMA;
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Error Callback */
|
|
husart->ErrorCallback(husart);
|
|
#else
|
|
/* Call legacy weak Error Callback */
|
|
HAL_USART_ErrorCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA USART communication abort callback, when initiated by HAL services on Error
|
|
* (To be called at end of DMA Abort procedure following error occurrence).
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
husart->RxXferCount = 0U;
|
|
husart->TxXferCount = 0U;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Error Callback */
|
|
husart->ErrorCallback(husart);
|
|
#else
|
|
/* Call legacy weak Error Callback */
|
|
HAL_USART_ErrorCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA USART Tx communication abort callback, when initiated by user
|
|
* (To be called at end of DMA Tx Abort procedure following user abort request).
|
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
|
* Abort still ongoing for Rx DMA Handle.
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
|
|
|
/* Check if an Abort process is still ongoing */
|
|
if (husart->hdmarx != NULL)
|
|
{
|
|
if (husart->hdmarx->XferAbortCallback != NULL)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
|
husart->TxXferCount = 0U;
|
|
husart->RxXferCount = 0U;
|
|
|
|
/* Reset errorCode */
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
|
|
/* Clear the Error flags in the ICR register */
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
|
|
|
/* Restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Call user Abort complete callback */
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Complete Callback */
|
|
husart->AbortCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Abort Complete Callback */
|
|
HAL_USART_AbortCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief DMA USART Rx communication abort callback, when initiated by user
|
|
* (To be called at end of DMA Rx Abort procedure following user abort request).
|
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
|
* Abort still ongoing for Tx DMA Handle.
|
|
* @param hdma DMA handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
|
|
{
|
|
USART_HandleTypeDef *husart = (USART_HandleTypeDef *)(hdma->Parent);
|
|
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
|
|
|
/* Check if an Abort process is still ongoing */
|
|
if (husart->hdmatx != NULL)
|
|
{
|
|
if (husart->hdmatx->XferAbortCallback != NULL)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
|
husart->TxXferCount = 0U;
|
|
husart->RxXferCount = 0U;
|
|
|
|
/* Reset errorCode */
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
|
|
/* Clear the Error flags in the ICR register */
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
|
|
|
/* Restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Call user Abort complete callback */
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Complete Callback */
|
|
husart->AbortCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Abort Complete Callback */
|
|
HAL_USART_AbortCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Handle USART Communication Timeout. It waits
|
|
* until a flag is no longer in the specified status.
|
|
* @param husart USART handle.
|
|
* @param Flag Specifies the USART 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 USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status,
|
|
uint32_t Tickstart, uint32_t Timeout)
|
|
{
|
|
/* Wait until flag is set */
|
|
while ((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status)
|
|
{
|
|
/* Check for the Timeout */
|
|
if (Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
|
|
{
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Configure the USART peripheral.
|
|
* @param husart USART handle.
|
|
* @retval HAL status
|
|
*/
|
|
static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart)
|
|
{
|
|
uint32_t tmpreg;
|
|
USART_ClockSourceTypeDef clocksource;
|
|
HAL_StatusTypeDef ret = HAL_OK;
|
|
uint16_t brrtemp;
|
|
uint32_t usartdiv = 0x00000000;
|
|
PLL2_ClocksTypeDef pll2_clocks;
|
|
PLL3_ClocksTypeDef pll3_clocks;
|
|
uint32_t pclk;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity));
|
|
assert_param(IS_USART_PHASE(husart->Init.CLKPhase));
|
|
assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit));
|
|
assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate));
|
|
assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength));
|
|
assert_param(IS_USART_STOPBITS(husart->Init.StopBits));
|
|
assert_param(IS_USART_PARITY(husart->Init.Parity));
|
|
assert_param(IS_USART_MODE(husart->Init.Mode));
|
|
assert_param(IS_USART_PRESCALER(husart->Init.ClockPrescaler));
|
|
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
|
/* Clear M, PCE, PS, TE and RE bits and configure
|
|
* the USART Word Length, Parity and Mode:
|
|
* set the M bits according to husart->Init.WordLength value
|
|
* set PCE and PS bits according to husart->Init.Parity value
|
|
* set TE and RE bits according to husart->Init.Mode value
|
|
* force OVER8 to 1 to allow to reach the maximum speed (Fclock/8) */
|
|
tmpreg = (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8;
|
|
MODIFY_REG(husart->Instance->CR1, USART_CR1_FIELDS, tmpreg);
|
|
|
|
/*---------------------------- USART CR2 Configuration ---------------------*/
|
|
/* Clear and configure the USART Clock, CPOL, CPHA, LBCL STOP and SLVEN bits:
|
|
* set CPOL bit according to husart->Init.CLKPolarity value
|
|
* set CPHA bit according to husart->Init.CLKPhase value
|
|
* set LBCL bit according to husart->Init.CLKLastBit value (used in SPI master mode only)
|
|
* set STOP[13:12] bits according to husart->Init.StopBits value */
|
|
tmpreg = (uint32_t)(USART_CLOCK_ENABLE);
|
|
tmpreg |= (uint32_t)husart->Init.CLKLastBit;
|
|
tmpreg |= ((uint32_t)husart->Init.CLKPolarity | (uint32_t)husart->Init.CLKPhase);
|
|
tmpreg |= (uint32_t)husart->Init.StopBits;
|
|
MODIFY_REG(husart->Instance->CR2, USART_CR2_FIELDS, tmpreg);
|
|
|
|
/*-------------------------- USART PRESC Configuration -----------------------*/
|
|
/* Configure
|
|
* - USART Clock Prescaler : set PRESCALER according to husart->Init.ClockPrescaler value */
|
|
MODIFY_REG(husart->Instance->PRESC, USART_PRESC_PRESCALER, husart->Init.ClockPrescaler);
|
|
|
|
/*-------------------------- USART BRR Configuration -----------------------*/
|
|
/* BRR is filled-up according to OVER8 bit setting which is forced to 1 */
|
|
USART_GETCLOCKSOURCE(husart, clocksource);
|
|
|
|
switch (clocksource)
|
|
{
|
|
case USART_CLOCKSOURCE_D2PCLK1:
|
|
pclk = HAL_RCC_GetPCLK1Freq();
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(pclk, husart->Init.BaudRate, husart->Init.ClockPrescaler));
|
|
break;
|
|
case USART_CLOCKSOURCE_D2PCLK2:
|
|
pclk = HAL_RCC_GetPCLK2Freq();
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(pclk, husart->Init.BaudRate, husart->Init.ClockPrescaler));
|
|
break;
|
|
case USART_CLOCKSOURCE_PLL2:
|
|
HAL_RCCEx_GetPLL2ClockFreq(&pll2_clocks);
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(pll2_clocks.PLL2_Q_Frequency, husart->Init.BaudRate,
|
|
husart->Init.ClockPrescaler));
|
|
break;
|
|
case USART_CLOCKSOURCE_PLL3:
|
|
HAL_RCCEx_GetPLL3ClockFreq(&pll3_clocks);
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(pll3_clocks.PLL3_Q_Frequency, husart->Init.BaudRate,
|
|
husart->Init.ClockPrescaler));
|
|
break;
|
|
case USART_CLOCKSOURCE_HSI:
|
|
if (__HAL_RCC_GET_FLAG(RCC_FLAG_HSIDIV) != 0U)
|
|
{
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8((HSI_VALUE >> (__HAL_RCC_GET_HSI_DIVIDER() >> 3U)),
|
|
husart->Init.BaudRate, husart->Init.ClockPrescaler));
|
|
}
|
|
else
|
|
{
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(HSI_VALUE, husart->Init.BaudRate, husart->Init.ClockPrescaler));
|
|
}
|
|
break;
|
|
case USART_CLOCKSOURCE_CSI:
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(CSI_VALUE, husart->Init.BaudRate, husart->Init.ClockPrescaler));
|
|
break;
|
|
case USART_CLOCKSOURCE_LSE:
|
|
usartdiv = (uint32_t)(USART_DIV_SAMPLING8(LSE_VALUE, husart->Init.BaudRate, husart->Init.ClockPrescaler));
|
|
break;
|
|
default:
|
|
ret = HAL_ERROR;
|
|
break;
|
|
}
|
|
|
|
/* USARTDIV must be greater than or equal to 0d16 and smaller than or equal to ffff */
|
|
if ((usartdiv >= USART_BRR_MIN) && (usartdiv <= USART_BRR_MAX))
|
|
{
|
|
brrtemp = (uint16_t)(usartdiv & 0xFFF0U);
|
|
brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000FU) >> 1U);
|
|
husart->Instance->BRR = brrtemp;
|
|
}
|
|
else
|
|
{
|
|
ret = HAL_ERROR;
|
|
}
|
|
|
|
/* Initialize the number of data to process during RX/TX ISR execution */
|
|
husart->NbTxDataToProcess = 1U;
|
|
husart->NbRxDataToProcess = 1U;
|
|
|
|
/* Clear ISR function pointers */
|
|
husart->RxISR = NULL;
|
|
husart->TxISR = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* @brief Check the USART Idle State.
|
|
* @param husart USART handle.
|
|
* @retval HAL status
|
|
*/
|
|
static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart)
|
|
{
|
|
uint32_t tickstart;
|
|
|
|
/* Initialize the USART ErrorCode */
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
|
|
|
/* Init tickstart for timeout management */
|
|
tickstart = HAL_GetTick();
|
|
|
|
/* Check if the Transmitter is enabled */
|
|
if ((husart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
|
|
{
|
|
/* Wait until TEACK flag is set */
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_ISR_TEACK, RESET, tickstart, USART_TEACK_REACK_TIMEOUT) != HAL_OK)
|
|
{
|
|
/* Timeout occurred */
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
/* Check if the Receiver is enabled */
|
|
if ((husart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
|
|
{
|
|
/* Wait until REACK flag is set */
|
|
if (USART_WaitOnFlagUntilTimeout(husart, USART_ISR_REACK, RESET, tickstart, USART_TEACK_REACK_TIMEOUT) != HAL_OK)
|
|
{
|
|
/* Timeout occurred */
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
|
|
/* Initialize the USART state*/
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(husart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Simplex send an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Transmit_IT().
|
|
* @note The USART errors are not managed to avoid the overrun error.
|
|
* @note ISR function executed when FIFO mode is disabled and when the
|
|
* data word length is less than 9 bits long.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_TxISR_8BIT(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
|
|
/* Check that a Tx process is ongoing */
|
|
if ((state == HAL_USART_STATE_BUSY_TX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
if (husart->TxXferCount == 0U)
|
|
{
|
|
/* Disable the USART Transmit data register empty interrupt */
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
|
|
|
/* Enable the USART Transmit Complete Interrupt */
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
|
}
|
|
else
|
|
{
|
|
husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr & (uint8_t)0xFF);
|
|
husart->pTxBuffPtr++;
|
|
husart->TxXferCount--;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Simplex send an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Transmit_IT().
|
|
* @note The USART errors are not managed to avoid the overrun error.
|
|
* @note ISR function executed when FIFO mode is disabled and when the
|
|
* data word length is 9 bits long.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_TxISR_16BIT(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
const uint16_t *tmp;
|
|
|
|
if ((state == HAL_USART_STATE_BUSY_TX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
if (husart->TxXferCount == 0U)
|
|
{
|
|
/* Disable the USART Transmit data register empty interrupt */
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
|
|
|
/* Enable the USART Transmit Complete Interrupt */
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
|
}
|
|
else
|
|
{
|
|
tmp = (const uint16_t *) husart->pTxBuffPtr;
|
|
husart->Instance->TDR = (uint16_t)(*tmp & 0x01FFU);
|
|
husart->pTxBuffPtr += 2U;
|
|
husart->TxXferCount--;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Simplex send an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Transmit_IT().
|
|
* @note The USART errors are not managed to avoid the overrun error.
|
|
* @note ISR function executed when FIFO mode is enabled and when the
|
|
* data word length is less than 9 bits long.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_TxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
uint16_t nb_tx_data;
|
|
|
|
/* Check that a Tx process is ongoing */
|
|
if ((state == HAL_USART_STATE_BUSY_TX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
for (nb_tx_data = husart->NbTxDataToProcess ; nb_tx_data > 0U ; nb_tx_data--)
|
|
{
|
|
if (husart->TxXferCount == 0U)
|
|
{
|
|
/* Disable the TX FIFO threshold interrupt */
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TXFT);
|
|
|
|
/* Enable the USART Transmit Complete Interrupt */
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
|
|
|
break; /* force exit loop */
|
|
}
|
|
else if (__HAL_USART_GET_FLAG(husart, USART_FLAG_TXFNF) == SET)
|
|
{
|
|
husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr & (uint8_t)0xFF);
|
|
husart->pTxBuffPtr++;
|
|
husart->TxXferCount--;
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Simplex send an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Transmit_IT().
|
|
* @note The USART errors are not managed to avoid the overrun error.
|
|
* @note ISR function executed when FIFO mode is enabled and when the
|
|
* data word length is 9 bits long.
|
|
* @param husart USART handle.
|
|
* @retval None
|
|
*/
|
|
static void USART_TxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
const uint16_t *tmp;
|
|
uint16_t nb_tx_data;
|
|
|
|
/* Check that a Tx process is ongoing */
|
|
if ((state == HAL_USART_STATE_BUSY_TX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
for (nb_tx_data = husart->NbTxDataToProcess ; nb_tx_data > 0U ; nb_tx_data--)
|
|
{
|
|
if (husart->TxXferCount == 0U)
|
|
{
|
|
/* Disable the TX FIFO threshold interrupt */
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TXFT);
|
|
|
|
/* Enable the USART Transmit Complete Interrupt */
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
|
|
|
break; /* force exit loop */
|
|
}
|
|
else if (__HAL_USART_GET_FLAG(husart, USART_FLAG_TXFNF) == SET)
|
|
{
|
|
tmp = (const uint16_t *) husart->pTxBuffPtr;
|
|
husart->Instance->TDR = (uint16_t)(*tmp & 0x01FFU);
|
|
husart->pTxBuffPtr += 2U;
|
|
husart->TxXferCount--;
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Wraps up transmission in non-blocking mode.
|
|
* @param husart Pointer to a USART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified USART module.
|
|
* @retval None
|
|
*/
|
|
static void USART_EndTransmit_IT(USART_HandleTypeDef *husart)
|
|
{
|
|
/* Disable the USART Transmit Complete Interrupt */
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TC);
|
|
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
|
|
|
|
/* Clear TxISR function pointer */
|
|
husart->TxISR = NULL;
|
|
|
|
if (husart->State == HAL_USART_STATE_BUSY_TX)
|
|
{
|
|
/* Clear overrun flag and discard the received data */
|
|
__HAL_USART_CLEAR_OREFLAG(husart);
|
|
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST);
|
|
|
|
/* Tx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Complete Callback */
|
|
husart->TxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Complete Callback */
|
|
HAL_USART_TxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else if (husart->RxXferCount == 0U)
|
|
{
|
|
/* TxRx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Rx Complete Callback */
|
|
husart->TxRxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Rx Complete Callback */
|
|
HAL_USART_TxRxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Simplex receive an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Receive_IT().
|
|
* @note ISR function executed when FIFO mode is disabled and when the
|
|
* data word length is less than 9 bits long.
|
|
* @param husart USART handle
|
|
* @retval None
|
|
*/
|
|
static void USART_RxISR_8BIT(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
uint16_t txdatacount;
|
|
uint16_t uhMask = husart->Mask;
|
|
uint32_t txftie;
|
|
|
|
if ((state == HAL_USART_STATE_BUSY_RX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
*husart->pRxBuffPtr = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
|
|
husart->pRxBuffPtr++;
|
|
husart->RxXferCount--;
|
|
|
|
if (husart->RxXferCount == 0U)
|
|
{
|
|
/* Disable the USART Parity Error Interrupt and RXNE interrupt*/
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
|
|
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Clear RxISR function pointer */
|
|
husart->RxISR = NULL;
|
|
|
|
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */
|
|
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE);
|
|
txdatacount = husart->TxXferCount;
|
|
|
|
if (state == HAL_USART_STATE_BUSY_RX)
|
|
{
|
|
/* Clear SPI slave underrun flag and discard transmit data */
|
|
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE)
|
|
{
|
|
__HAL_USART_CLEAR_UDRFLAG(husart);
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
}
|
|
|
|
/* Rx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Complete Callback */
|
|
husart->RxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Complete Callback */
|
|
HAL_USART_RxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) &&
|
|
(txftie != USART_CR3_TXFTIE) &&
|
|
(txdatacount == 0U))
|
|
{
|
|
/* TxRx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Rx Complete Callback */
|
|
husart->TxRxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Rx Complete Callback */
|
|
HAL_USART_TxRxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
else if ((state == HAL_USART_STATE_BUSY_RX) &&
|
|
(husart->SlaveMode == USART_SLAVEMODE_DISABLE))
|
|
{
|
|
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Simplex receive an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Receive_IT().
|
|
* @note ISR function executed when FIFO mode is disabled and when the
|
|
* data word length is 9 bits long.
|
|
* @param husart USART handle
|
|
* @retval None
|
|
*/
|
|
static void USART_RxISR_16BIT(USART_HandleTypeDef *husart)
|
|
{
|
|
const HAL_USART_StateTypeDef state = husart->State;
|
|
uint16_t txdatacount;
|
|
uint16_t *tmp;
|
|
uint16_t uhMask = husart->Mask;
|
|
uint32_t txftie;
|
|
|
|
if ((state == HAL_USART_STATE_BUSY_RX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
tmp = (uint16_t *) husart->pRxBuffPtr;
|
|
*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
|
|
husart->pRxBuffPtr += 2U;
|
|
husart->RxXferCount--;
|
|
|
|
if (husart->RxXferCount == 0U)
|
|
{
|
|
/* Disable the USART Parity Error Interrupt and RXNE interrupt*/
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE));
|
|
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Clear RxISR function pointer */
|
|
husart->RxISR = NULL;
|
|
|
|
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */
|
|
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE);
|
|
txdatacount = husart->TxXferCount;
|
|
|
|
if (state == HAL_USART_STATE_BUSY_RX)
|
|
{
|
|
/* Clear SPI slave underrun flag and discard transmit data */
|
|
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE)
|
|
{
|
|
__HAL_USART_CLEAR_UDRFLAG(husart);
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
}
|
|
|
|
/* Rx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Complete Callback */
|
|
husart->RxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Complete Callback */
|
|
HAL_USART_RxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) &&
|
|
(txftie != USART_CR3_TXFTIE) &&
|
|
(txdatacount == 0U))
|
|
{
|
|
/* TxRx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Rx Complete Callback */
|
|
husart->TxRxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Rx Complete Callback */
|
|
HAL_USART_TxRxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
else if ((state == HAL_USART_STATE_BUSY_RX) &&
|
|
(husart->SlaveMode == USART_SLAVEMODE_DISABLE))
|
|
{
|
|
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Simplex receive an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Receive_IT().
|
|
* @note ISR function executed when FIFO mode is enabled and when the
|
|
* data word length is less than 9 bits long.
|
|
* @param husart USART handle
|
|
* @retval None
|
|
*/
|
|
static void USART_RxISR_8BIT_FIFOEN(USART_HandleTypeDef *husart)
|
|
{
|
|
HAL_USART_StateTypeDef state = husart->State;
|
|
uint16_t txdatacount;
|
|
uint16_t rxdatacount;
|
|
uint16_t uhMask = husart->Mask;
|
|
uint16_t nb_rx_data;
|
|
uint32_t txftie;
|
|
|
|
/* Check that a Rx process is ongoing */
|
|
if ((state == HAL_USART_STATE_BUSY_RX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
for (nb_rx_data = husart->NbRxDataToProcess ; nb_rx_data > 0U ; nb_rx_data--)
|
|
{
|
|
if (__HAL_USART_GET_FLAG(husart, USART_FLAG_RXFNE) == SET)
|
|
{
|
|
*husart->pRxBuffPtr = (uint8_t)(husart->Instance->RDR & (uint8_t)(uhMask & 0xFFU));
|
|
husart->pRxBuffPtr++;
|
|
husart->RxXferCount--;
|
|
|
|
if (husart->RxXferCount == 0U)
|
|
{
|
|
/* Disable the USART Parity Error Interrupt */
|
|
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error)
|
|
and RX FIFO Threshold interrupt */
|
|
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
|
|
|
|
/* Clear RxISR function pointer */
|
|
husart->RxISR = NULL;
|
|
|
|
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */
|
|
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE);
|
|
txdatacount = husart->TxXferCount;
|
|
|
|
if (state == HAL_USART_STATE_BUSY_RX)
|
|
{
|
|
/* Clear SPI slave underrun flag and discard transmit data */
|
|
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE)
|
|
{
|
|
__HAL_USART_CLEAR_UDRFLAG(husart);
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
}
|
|
|
|
/* Rx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
state = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Complete Callback */
|
|
husart->RxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Complete Callback */
|
|
HAL_USART_RxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) &&
|
|
(txftie != USART_CR3_TXFTIE) &&
|
|
(txdatacount == 0U))
|
|
{
|
|
/* TxRx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
state = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Rx Complete Callback */
|
|
husart->TxRxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Rx Complete Callback */
|
|
HAL_USART_TxRxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
else if ((state == HAL_USART_STATE_BUSY_RX) &&
|
|
(husart->SlaveMode == USART_SLAVEMODE_DISABLE))
|
|
{
|
|
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* When remaining number of bytes to receive is less than the RX FIFO
|
|
threshold, next incoming frames are processed as if FIFO mode was
|
|
disabled (i.e. one interrupt per received frame).
|
|
*/
|
|
rxdatacount = husart->RxXferCount;
|
|
if (((rxdatacount != 0U)) && (rxdatacount < husart->NbRxDataToProcess))
|
|
{
|
|
/* Disable the USART RXFT interrupt*/
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_RXFTIE);
|
|
|
|
/* Update the RxISR function pointer */
|
|
husart->RxISR = USART_RxISR_8BIT;
|
|
|
|
/* Enable the USART Data Register Not Empty interrupt */
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE);
|
|
|
|
if ((husart->TxXferCount == 0U) &&
|
|
(state == HAL_USART_STATE_BUSY_TX_RX) &&
|
|
(husart->SlaveMode == USART_SLAVEMODE_DISABLE))
|
|
{
|
|
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Clear RXNE interrupt flag */
|
|
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Simplex receive an amount of data in non-blocking mode.
|
|
* @note Function called under interruption only, once
|
|
* interruptions have been enabled by HAL_USART_Receive_IT().
|
|
* @note ISR function executed when FIFO mode is enabled and when the
|
|
* data word length is 9 bits long.
|
|
* @param husart USART handle
|
|
* @retval None
|
|
*/
|
|
static void USART_RxISR_16BIT_FIFOEN(USART_HandleTypeDef *husart)
|
|
{
|
|
HAL_USART_StateTypeDef state = husart->State;
|
|
uint16_t txdatacount;
|
|
uint16_t rxdatacount;
|
|
uint16_t *tmp;
|
|
uint16_t uhMask = husart->Mask;
|
|
uint16_t nb_rx_data;
|
|
uint32_t txftie;
|
|
|
|
/* Check that a Tx process is ongoing */
|
|
if ((state == HAL_USART_STATE_BUSY_RX) ||
|
|
(state == HAL_USART_STATE_BUSY_TX_RX))
|
|
{
|
|
for (nb_rx_data = husart->NbRxDataToProcess ; nb_rx_data > 0U ; nb_rx_data--)
|
|
{
|
|
if (__HAL_USART_GET_FLAG(husart, USART_FLAG_RXFNE) == SET)
|
|
{
|
|
tmp = (uint16_t *) husart->pRxBuffPtr;
|
|
*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
|
|
husart->pRxBuffPtr += 2U;
|
|
husart->RxXferCount--;
|
|
|
|
if (husart->RxXferCount == 0U)
|
|
{
|
|
/* Disable the USART Parity Error Interrupt */
|
|
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
|
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error)
|
|
and RX FIFO Threshold interrupt */
|
|
CLEAR_BIT(husart->Instance->CR3, (USART_CR3_EIE | USART_CR3_RXFTIE));
|
|
|
|
/* Clear RxISR function pointer */
|
|
husart->RxISR = NULL;
|
|
|
|
/* txftie and txdatacount are temporary variables for MISRAC2012-Rule-13.5 */
|
|
txftie = READ_BIT(husart->Instance->CR3, USART_CR3_TXFTIE);
|
|
txdatacount = husart->TxXferCount;
|
|
|
|
if (state == HAL_USART_STATE_BUSY_RX)
|
|
{
|
|
/* Clear SPI slave underrun flag and discard transmit data */
|
|
if (husart->SlaveMode == USART_SLAVEMODE_ENABLE)
|
|
{
|
|
__HAL_USART_CLEAR_UDRFLAG(husart);
|
|
__HAL_USART_SEND_REQ(husart, USART_TXDATA_FLUSH_REQUEST);
|
|
}
|
|
|
|
/* Rx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
state = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Rx Complete Callback */
|
|
husart->RxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Rx Complete Callback */
|
|
HAL_USART_RxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else if ((READ_BIT(husart->Instance->CR1, USART_CR1_TCIE) != USART_CR1_TCIE) &&
|
|
(txftie != USART_CR3_TXFTIE) &&
|
|
(txdatacount == 0U))
|
|
{
|
|
/* TxRx process is completed, restore husart->State to Ready */
|
|
husart->State = HAL_USART_STATE_READY;
|
|
state = HAL_USART_STATE_READY;
|
|
|
|
#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Tx Rx Complete Callback */
|
|
husart->TxRxCpltCallback(husart);
|
|
#else
|
|
/* Call legacy weak Tx Rx Complete Callback */
|
|
HAL_USART_TxRxCpltCallback(husart);
|
|
#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
else if ((state == HAL_USART_STATE_BUSY_RX) &&
|
|
(husart->SlaveMode == USART_SLAVEMODE_DISABLE))
|
|
{
|
|
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
else
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* When remaining number of bytes to receive is less than the RX FIFO
|
|
threshold, next incoming frames are processed as if FIFO mode was
|
|
disabled (i.e. one interrupt per received frame).
|
|
*/
|
|
rxdatacount = husart->RxXferCount;
|
|
if (((rxdatacount != 0U)) && (rxdatacount < husart->NbRxDataToProcess))
|
|
{
|
|
/* Disable the USART RXFT interrupt*/
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_RXFTIE);
|
|
|
|
/* Update the RxISR function pointer */
|
|
husart->RxISR = USART_RxISR_16BIT;
|
|
|
|
/* Enable the USART Data Register Not Empty interrupt */
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE_RXFNEIE);
|
|
|
|
if ((husart->TxXferCount == 0U) &&
|
|
(state == HAL_USART_STATE_BUSY_TX_RX) &&
|
|
(husart->SlaveMode == USART_SLAVEMODE_DISABLE))
|
|
{
|
|
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FF);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Clear RXNE interrupt flag */
|
|
__HAL_USART_SEND_REQ(husart, USART_RXDATA_FLUSH_REQUEST);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* HAL_USART_MODULE_ENABLED */
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|