3808 lines
134 KiB
C
3808 lines
134 KiB
C
/**
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******************************************************************************
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* @file stm32f4xx_hal_uart.c
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* @author MCD Application Team
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* @brief UART HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
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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 Errors functions
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2016 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 UART HAL driver can be used as follows:
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(#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart).
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(#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
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(##) Enable the USARTx interface clock.
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(##) UART pins configuration:
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(+++) Enable the clock for the UART GPIOs.
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(+++) Configure the UART TX/RX pins as alternate function pull-up.
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(##) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
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and HAL_UART_Receive_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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(##) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
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and HAL_UART_Receive_DMA() APIs):
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(+++) Declare a DMA handle structure for the Tx/Rx stream.
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(+++) Enable the DMAx interface clock.
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(+++) Configure the declared DMA handle structure with the required
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Tx/Rx parameters.
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(+++) Configure the DMA Tx/Rx stream.
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(+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
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(+++) Configure the priority and enable the NVIC for the transfer complete
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interrupt on the DMA Tx/Rx stream.
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(+++) Configure the USARTx interrupt priority and enable the NVIC USART IRQ handle
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(used for last byte sending completion detection in DMA non circular mode)
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(#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
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flow control and Mode(Receiver/Transmitter) in the huart Init structure.
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(#) For the UART asynchronous mode, initialize the UART registers by calling
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the HAL_UART_Init() API.
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(#) For the UART Half duplex mode, initialize the UART registers by calling
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the HAL_HalfDuplex_Init() API.
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(#) For the LIN mode, initialize the UART registers by calling the HAL_LIN_Init() API.
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(#) For the Multi-Processor mode, initialize the UART registers by calling
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the HAL_MultiProcessor_Init() API.
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[..]
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(@) The specific UART interrupts (Transmission complete interrupt,
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RXNE interrupt and Error Interrupts) will be managed using the macros
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__HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit
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and receive process.
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[..]
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(@) These APIs (HAL_UART_Init() and HAL_HalfDuplex_Init()) configure also the
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low level Hardware GPIO, CLOCK, CORTEX...etc) by calling the customized
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HAL_UART_MspInit() API.
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##### Callback registration #####
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==================================
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[..]
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The compilation define USE_HAL_UART_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_UART_RegisterCallback() to register a user callback.
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Function HAL_UART_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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(+) ErrorCallback : Error Callback.
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(+) AbortCpltCallback : Abort Complete Callback.
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(+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
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(+) AbortReceiveCpltCallback : Abort Receive Complete Callback.
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(+) MspInitCallback : UART MspInit.
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(+) MspDeInitCallback : UART 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_UART_UnRegisterCallback() to reset a callback to the default
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weak (surcharged) function.
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HAL_UART_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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(+) ErrorCallback : Error Callback.
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(+) AbortCpltCallback : Abort Complete Callback.
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(+) AbortTransmitCpltCallback : Abort Transmit Complete Callback.
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(+) AbortReceiveCpltCallback : Abort Receive Complete Callback.
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(+) MspInitCallback : UART MspInit.
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(+) MspDeInitCallback : UART MspDeInit.
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[..]
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For specific callback RxEventCallback, use dedicated registration/reset functions:
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respectively HAL_UART_RegisterRxEventCallback() , HAL_UART_UnRegisterRxEventCallback().
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[..]
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By default, after the HAL_UART_Init() and when the state is HAL_UART_STATE_RESET
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all callbacks are set to the corresponding weak (surcharged) functions:
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examples HAL_UART_TxCpltCallback(), HAL_UART_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_UART_Init()
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and HAL_UART_DeInit() only when these callbacks are null (not registered beforehand).
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If not, MspInit or MspDeInit are not null, the HAL_UART_Init() and HAL_UART_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_UART_STATE_READY state only.
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Exception done MspInit/MspDeInit that can be registered/unregistered
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in HAL_UART_STATE_READY or HAL_UART_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_UART_RegisterCallback() before calling HAL_UART_DeInit()
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or HAL_UART_Init() function.
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[..]
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When The compilation define USE_HAL_UART_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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[..]
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Three operation modes are available within this driver :
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*** Polling mode IO operation ***
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=================================
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[..]
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(+) Send an amount of data in blocking mode using HAL_UART_Transmit()
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(+) Receive an amount of data in blocking mode using HAL_UART_Receive()
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*** Interrupt mode IO operation ***
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===================================
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[..]
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(+) Send an amount of data in non blocking mode using HAL_UART_Transmit_IT()
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(+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_UART_TxCpltCallback
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(+) Receive an amount of data in non blocking mode using HAL_UART_Receive_IT()
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(+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_UART_RxCpltCallback
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(+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
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add his own code by customization of function pointer HAL_UART_ErrorCallback
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*** DMA mode IO operation ***
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==============================
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[..]
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(+) Send an amount of data in non blocking mode (DMA) using HAL_UART_Transmit_DMA()
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(+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback
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(+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_UART_TxCpltCallback
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(+) Receive an amount of data in non blocking mode (DMA) using HAL_UART_Receive_DMA()
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(+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback
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(+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_UART_RxCpltCallback
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(+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
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add his own code by customization of function pointer HAL_UART_ErrorCallback
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(+) Pause the DMA Transfer using HAL_UART_DMAPause()
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(+) Resume the DMA Transfer using HAL_UART_DMAResume()
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(+) Stop the DMA Transfer using HAL_UART_DMAStop()
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[..] This subsection also provides a set of additional functions providing enhanced reception
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services to user. (For example, these functions allow application to handle use cases
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where number of data to be received is unknown).
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(#) Compared to standard reception services which only consider number of received
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data elements as reception completion criteria, these functions also consider additional events
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as triggers for updating reception status to caller :
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(+) Detection of inactivity period (RX line has not been active for a given period).
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(++) RX inactivity detected by IDLE event, i.e. RX line has been in idle state (normally high state)
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for 1 frame time, after last received byte.
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(#) There are two mode of transfer:
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(+) Blocking mode: The reception is performed in polling mode, until either expected number of data is received,
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or till IDLE event occurs. Reception is handled only during function execution.
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When function exits, no data reception could occur. HAL status and number of actually received data elements,
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are returned by function after finishing transfer.
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(+) Non-Blocking mode: The reception is performed using Interrupts or DMA.
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These API's return the HAL status.
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The end of the data processing will be indicated through the
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dedicated UART IRQ when using Interrupt mode or the DMA IRQ when using DMA mode.
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The HAL_UARTEx_RxEventCallback() user callback will be executed during Receive process
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The HAL_UART_ErrorCallback()user callback will be executed when a reception error is detected.
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(#) Blocking mode API:
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(+) HAL_UARTEx_ReceiveToIdle()
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(#) Non-Blocking mode API with Interrupt:
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(+) HAL_UARTEx_ReceiveToIdle_IT()
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(#) Non-Blocking mode API with DMA:
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(+) HAL_UARTEx_ReceiveToIdle_DMA()
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*** UART HAL driver macros list ***
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=============================================
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[..]
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Below the list of most used macros in UART HAL driver.
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(+) __HAL_UART_ENABLE: Enable the UART peripheral
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(+) __HAL_UART_DISABLE: Disable the UART peripheral
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(+) __HAL_UART_GET_FLAG : Check whether the specified UART flag is set or not
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(+) __HAL_UART_CLEAR_FLAG : Clear the specified UART pending flag
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(+) __HAL_UART_ENABLE_IT: Enable the specified UART interrupt
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(+) __HAL_UART_DISABLE_IT: Disable the specified UART interrupt
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(+) __HAL_UART_GET_IT_SOURCE: Check whether the specified UART interrupt has occurred or not
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[..]
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(@) You can refer to the UART HAL driver header file for more useful macros
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@endverbatim
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[..]
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(@) Additional remark: 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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Depending on the frame length defined by the M bit (8-bits or 9-bits),
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the possible UART frame formats are as listed in the following table:
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+-------------------------------------------------------------+
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| M bit | PCE bit | UART frame |
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|---------------------|---------------------------------------|
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| 0 | 0 | | SB | 8 bit data | STB | |
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|---------|-----------|---------------------------------------|
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| 0 | 1 | | SB | 7 bit data | PB | STB | |
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|---------|-----------|---------------------------------------|
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| 1 | 0 | | SB | 9 bit data | STB | |
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|---------|-----------|---------------------------------------|
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| 1 | 1 | | SB | 8 bit data | PB | STB | |
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+-------------------------------------------------------------+
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_hal.h"
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/** @addtogroup STM32F4xx_HAL_Driver
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* @{
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*/
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/** @defgroup UART UART
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* @brief HAL UART module driver
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* @{
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*/
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#ifdef HAL_UART_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/** @addtogroup UART_Private_Constants
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* @{
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*/
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/**
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* @}
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*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/** @addtogroup UART_Private_Functions UART Private Functions
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* @{
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*/
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#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
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void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart);
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#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
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static void UART_EndTxTransfer(UART_HandleTypeDef *huart);
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static void UART_EndRxTransfer(UART_HandleTypeDef *huart);
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static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
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static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
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static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
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static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
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static void UART_DMAError(DMA_HandleTypeDef *hdma);
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static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
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static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
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static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
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static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
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static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
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static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
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static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
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static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
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static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status,
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uint32_t Tickstart, uint32_t Timeout);
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static void UART_SetConfig(UART_HandleTypeDef *huart);
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/**
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* @}
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*/
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/* Exported functions ---------------------------------------------------------*/
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/** @defgroup UART_Exported_Functions UART Exported Functions
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* @{
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*/
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/** @defgroup UART_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 USARTx or the UARTy
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in asynchronous mode.
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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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Depending on the frame length defined by the M bit (8-bits or 9-bits),
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please refer to Reference manual for possible UART frame formats.
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(++) Hardware flow control
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(++) Receiver/transmitter modes
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(++) Over Sampling Method
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[..]
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The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init() and HAL_MultiProcessor_Init() APIs
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follow respectively the UART asynchronous, UART Half duplex, LIN and Multi-Processor configuration
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procedures (details for the procedures are available in reference manual
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(RM0430 for STM32F4X3xx MCUs and RM0402 for STM32F412xx MCUs
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RM0383 for STM32F411xC/E MCUs and RM0401 for STM32F410xx MCUs
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RM0090 for STM32F4X5xx/STM32F4X7xx/STM32F429xx/STM32F439xx MCUs
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RM0390 for STM32F446xx MCUs and RM0386 for STM32F469xx/STM32F479xx MCUs)).
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@endverbatim
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* @{
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*/
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/**
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* @brief Initializes the UART mode according to the specified parameters in
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* the UART_InitTypeDef and create the associated handle.
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* @param huart Pointer to a UART_HandleTypeDef structure that contains
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* the configuration information for the specified UART module.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
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{
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/* Check the UART handle allocation */
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if (huart == 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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if (huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
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{
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/* The hardware flow control is available only for USART1, USART2, USART3 and USART6.
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Except for STM32F446xx devices, that is available for USART1, USART2, USART3, USART6, UART4 and UART5.
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*/
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assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
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assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
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}
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else
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{
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assert_param(IS_UART_INSTANCE(huart->Instance));
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}
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assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
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assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
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if (huart->gState == HAL_UART_STATE_RESET)
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{
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/* Allocate lock resource and initialize it */
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huart->Lock = HAL_UNLOCKED;
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#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
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UART_InitCallbacksToDefault(huart);
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if (huart->MspInitCallback == NULL)
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{
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huart->MspInitCallback = HAL_UART_MspInit;
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}
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/* Init the low level hardware */
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huart->MspInitCallback(huart);
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#else
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/* Init the low level hardware : GPIO, CLOCK */
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HAL_UART_MspInit(huart);
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#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
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}
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huart->gState = HAL_UART_STATE_BUSY;
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/* Disable the peripheral */
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__HAL_UART_DISABLE(huart);
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/* Set the UART Communication parameters */
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UART_SetConfig(huart);
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/* In asynchronous mode, the following bits must be kept cleared:
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- LINEN and CLKEN bits in the USART_CR2 register,
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- SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
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CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
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CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
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/* Enable the peripheral */
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__HAL_UART_ENABLE(huart);
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/* Initialize the UART state */
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huart->ErrorCode = HAL_UART_ERROR_NONE;
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huart->gState = HAL_UART_STATE_READY;
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huart->RxState = HAL_UART_STATE_READY;
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huart->RxEventType = HAL_UART_RXEVENT_TC;
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return HAL_OK;
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}
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/**
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* @brief Initializes the half-duplex mode according to the specified
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* parameters in the UART_InitTypeDef and create the associated handle.
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* @param huart Pointer to a UART_HandleTypeDef structure that contains
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* the configuration information for the specified UART module.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
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{
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/* Check the UART handle allocation */
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if (huart == 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_UART_HALFDUPLEX_INSTANCE(huart->Instance));
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assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
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assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
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if (huart->gState == HAL_UART_STATE_RESET)
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{
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/* Allocate lock resource and initialize it */
|
|
huart->Lock = HAL_UNLOCKED;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
UART_InitCallbacksToDefault(huart);
|
|
|
|
if (huart->MspInitCallback == NULL)
|
|
{
|
|
huart->MspInitCallback = HAL_UART_MspInit;
|
|
}
|
|
|
|
/* Init the low level hardware */
|
|
huart->MspInitCallback(huart);
|
|
#else
|
|
/* Init the low level hardware : GPIO, CLOCK */
|
|
HAL_UART_MspInit(huart);
|
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
|
}
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/* Disable the peripheral */
|
|
__HAL_UART_DISABLE(huart);
|
|
|
|
/* Set the UART Communication parameters */
|
|
UART_SetConfig(huart);
|
|
|
|
/* In half-duplex mode, the following bits must be kept cleared:
|
|
- LINEN and CLKEN bits in the USART_CR2 register,
|
|
- SCEN and IREN bits in the USART_CR3 register.*/
|
|
CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
|
|
CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN));
|
|
|
|
/* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
|
|
SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
|
|
|
|
/* Enable the peripheral */
|
|
__HAL_UART_ENABLE(huart);
|
|
|
|
/* Initialize the UART state*/
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Initializes the LIN mode according to the specified
|
|
* parameters in the UART_InitTypeDef and create the associated handle.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param BreakDetectLength Specifies the LIN break detection length.
|
|
* This parameter can be one of the following values:
|
|
* @arg UART_LINBREAKDETECTLENGTH_10B: 10-bit break detection
|
|
* @arg UART_LINBREAKDETECTLENGTH_11B: 11-bit break detection
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
|
|
{
|
|
/* Check the UART handle allocation */
|
|
if (huart == NULL)
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Check the LIN UART instance */
|
|
assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
|
|
|
|
/* Check the Break detection length parameter */
|
|
assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
|
|
assert_param(IS_UART_LIN_WORD_LENGTH(huart->Init.WordLength));
|
|
assert_param(IS_UART_LIN_OVERSAMPLING(huart->Init.OverSampling));
|
|
|
|
if (huart->gState == HAL_UART_STATE_RESET)
|
|
{
|
|
/* Allocate lock resource and initialize it */
|
|
huart->Lock = HAL_UNLOCKED;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
UART_InitCallbacksToDefault(huart);
|
|
|
|
if (huart->MspInitCallback == NULL)
|
|
{
|
|
huart->MspInitCallback = HAL_UART_MspInit;
|
|
}
|
|
|
|
/* Init the low level hardware */
|
|
huart->MspInitCallback(huart);
|
|
#else
|
|
/* Init the low level hardware : GPIO, CLOCK */
|
|
HAL_UART_MspInit(huart);
|
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
|
}
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/* Disable the peripheral */
|
|
__HAL_UART_DISABLE(huart);
|
|
|
|
/* Set the UART Communication parameters */
|
|
UART_SetConfig(huart);
|
|
|
|
/* In LIN mode, the following bits must be kept cleared:
|
|
- CLKEN bits in the USART_CR2 register,
|
|
- SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
|
|
CLEAR_BIT(huart->Instance->CR2, (USART_CR2_CLKEN));
|
|
CLEAR_BIT(huart->Instance->CR3, (USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN));
|
|
|
|
/* Enable the LIN mode by setting the LINEN bit in the CR2 register */
|
|
SET_BIT(huart->Instance->CR2, USART_CR2_LINEN);
|
|
|
|
/* Set the USART LIN Break detection length. */
|
|
CLEAR_BIT(huart->Instance->CR2, USART_CR2_LBDL);
|
|
SET_BIT(huart->Instance->CR2, BreakDetectLength);
|
|
|
|
/* Enable the peripheral */
|
|
__HAL_UART_ENABLE(huart);
|
|
|
|
/* Initialize the UART state*/
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Initializes the Multi-Processor mode according to the specified
|
|
* parameters in the UART_InitTypeDef and create the associated handle.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param Address USART address
|
|
* @param WakeUpMethod specifies the USART wake-up method.
|
|
* This parameter can be one of the following values:
|
|
* @arg UART_WAKEUPMETHOD_IDLELINE: Wake-up by an idle line detection
|
|
* @arg UART_WAKEUPMETHOD_ADDRESSMARK: Wake-up by an address mark
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
|
|
{
|
|
/* Check the UART handle allocation */
|
|
if (huart == NULL)
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
|
|
/* Check the Address & wake up method parameters */
|
|
assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
|
|
assert_param(IS_UART_ADDRESS(Address));
|
|
assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
|
|
assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
|
|
|
|
if (huart->gState == HAL_UART_STATE_RESET)
|
|
{
|
|
/* Allocate lock resource and initialize it */
|
|
huart->Lock = HAL_UNLOCKED;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
UART_InitCallbacksToDefault(huart);
|
|
|
|
if (huart->MspInitCallback == NULL)
|
|
{
|
|
huart->MspInitCallback = HAL_UART_MspInit;
|
|
}
|
|
|
|
/* Init the low level hardware */
|
|
huart->MspInitCallback(huart);
|
|
#else
|
|
/* Init the low level hardware : GPIO, CLOCK */
|
|
HAL_UART_MspInit(huart);
|
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
|
}
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/* Disable the peripheral */
|
|
__HAL_UART_DISABLE(huart);
|
|
|
|
/* Set the UART Communication parameters */
|
|
UART_SetConfig(huart);
|
|
|
|
/* In Multi-Processor mode, the following bits must be kept cleared:
|
|
- LINEN and CLKEN bits in the USART_CR2 register,
|
|
- SCEN, HDSEL and IREN bits in the USART_CR3 register */
|
|
CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
|
|
CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
|
|
|
|
/* Set the USART address node */
|
|
CLEAR_BIT(huart->Instance->CR2, USART_CR2_ADD);
|
|
SET_BIT(huart->Instance->CR2, Address);
|
|
|
|
/* Set the wake up method by setting the WAKE bit in the CR1 register */
|
|
CLEAR_BIT(huart->Instance->CR1, USART_CR1_WAKE);
|
|
SET_BIT(huart->Instance->CR1, WakeUpMethod);
|
|
|
|
/* Enable the peripheral */
|
|
__HAL_UART_ENABLE(huart);
|
|
|
|
/* Initialize the UART state */
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief DeInitializes the UART peripheral.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Check the UART handle allocation */
|
|
if (huart == NULL)
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/* Disable the Peripheral */
|
|
__HAL_UART_DISABLE(huart);
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
if (huart->MspDeInitCallback == NULL)
|
|
{
|
|
huart->MspDeInitCallback = HAL_UART_MspDeInit;
|
|
}
|
|
/* DeInit the low level hardware */
|
|
huart->MspDeInitCallback(huart);
|
|
#else
|
|
/* DeInit the low level hardware */
|
|
HAL_UART_MspDeInit(huart);
|
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->gState = HAL_UART_STATE_RESET;
|
|
huart->RxState = HAL_UART_STATE_RESET;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
/* Process Unlock */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief UART MSP Init.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_UART_MspInit could be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief UART MSP DeInit.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_UART_MspDeInit could be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/**
|
|
* @brief Register a User UART Callback
|
|
* To be used instead of the weak predefined callback
|
|
* @note The HAL_UART_RegisterCallback() may be called before HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init(),
|
|
* HAL_MultiProcessor_Init() to register callbacks for HAL_UART_MSPINIT_CB_ID and HAL_UART_MSPDEINIT_CB_ID
|
|
* @param huart uart handle
|
|
* @param CallbackID ID of the callback to be registered
|
|
* This parameter can be one of the following values:
|
|
* @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
|
|
* @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID
|
|
* @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
|
|
* @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID
|
|
* @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID
|
|
* @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
|
|
* @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
|
|
* @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
|
|
* @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID
|
|
* @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID
|
|
* @param pCallback pointer to the Callback function
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_RegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID,
|
|
pUART_CallbackTypeDef pCallback)
|
|
{
|
|
HAL_StatusTypeDef status = HAL_OK;
|
|
|
|
if (pCallback == NULL)
|
|
{
|
|
/* Update the error code */
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
if (huart->gState == HAL_UART_STATE_READY)
|
|
{
|
|
switch (CallbackID)
|
|
{
|
|
case HAL_UART_TX_HALFCOMPLETE_CB_ID :
|
|
huart->TxHalfCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_TX_COMPLETE_CB_ID :
|
|
huart->TxCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_RX_HALFCOMPLETE_CB_ID :
|
|
huart->RxHalfCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_RX_COMPLETE_CB_ID :
|
|
huart->RxCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_ERROR_CB_ID :
|
|
huart->ErrorCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_ABORT_COMPLETE_CB_ID :
|
|
huart->AbortCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
|
|
huart->AbortTransmitCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
|
|
huart->AbortReceiveCpltCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_MSPINIT_CB_ID :
|
|
huart->MspInitCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
|
huart->MspDeInitCallback = pCallback;
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else if (huart->gState == HAL_UART_STATE_RESET)
|
|
{
|
|
switch (CallbackID)
|
|
{
|
|
case HAL_UART_MSPINIT_CB_ID :
|
|
huart->MspInitCallback = pCallback;
|
|
break;
|
|
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
|
huart->MspDeInitCallback = pCallback;
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Update the error code */
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Unregister an UART Callback
|
|
* UART callaback is redirected to the weak predefined callback
|
|
* @note The HAL_UART_UnRegisterCallback() may be called before HAL_UART_Init(), HAL_HalfDuplex_Init(),
|
|
* HAL_LIN_Init(), HAL_MultiProcessor_Init() to un-register callbacks for HAL_UART_MSPINIT_CB_ID
|
|
* and HAL_UART_MSPDEINIT_CB_ID
|
|
* @param huart uart handle
|
|
* @param CallbackID ID of the callback to be unregistered
|
|
* This parameter can be one of the following values:
|
|
* @arg @ref HAL_UART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
|
|
* @arg @ref HAL_UART_TX_COMPLETE_CB_ID Tx Complete Callback ID
|
|
* @arg @ref HAL_UART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
|
|
* @arg @ref HAL_UART_RX_COMPLETE_CB_ID Rx Complete Callback ID
|
|
* @arg @ref HAL_UART_ERROR_CB_ID Error Callback ID
|
|
* @arg @ref HAL_UART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
|
|
* @arg @ref HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID Abort Transmit Complete Callback ID
|
|
* @arg @ref HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID Abort Receive Complete Callback ID
|
|
* @arg @ref HAL_UART_MSPINIT_CB_ID MspInit Callback ID
|
|
* @arg @ref HAL_UART_MSPDEINIT_CB_ID MspDeInit Callback ID
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_UnRegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID)
|
|
{
|
|
HAL_StatusTypeDef status = HAL_OK;
|
|
|
|
if (HAL_UART_STATE_READY == huart->gState)
|
|
{
|
|
switch (CallbackID)
|
|
{
|
|
case HAL_UART_TX_HALFCOMPLETE_CB_ID :
|
|
huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
|
|
break;
|
|
|
|
case HAL_UART_TX_COMPLETE_CB_ID :
|
|
huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */
|
|
break;
|
|
|
|
case HAL_UART_RX_HALFCOMPLETE_CB_ID :
|
|
huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
|
|
break;
|
|
|
|
case HAL_UART_RX_COMPLETE_CB_ID :
|
|
huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */
|
|
break;
|
|
|
|
case HAL_UART_ERROR_CB_ID :
|
|
huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */
|
|
break;
|
|
|
|
case HAL_UART_ABORT_COMPLETE_CB_ID :
|
|
huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
|
|
break;
|
|
|
|
case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
|
|
huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
|
|
break;
|
|
|
|
case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
|
|
huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak AbortReceiveCpltCallback */
|
|
break;
|
|
|
|
case HAL_UART_MSPINIT_CB_ID :
|
|
huart->MspInitCallback = HAL_UART_MspInit; /* Legacy weak MspInitCallback */
|
|
break;
|
|
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
|
huart->MspDeInitCallback = HAL_UART_MspDeInit; /* Legacy weak MspDeInitCallback */
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else if (HAL_UART_STATE_RESET == huart->gState)
|
|
{
|
|
switch (CallbackID)
|
|
{
|
|
case HAL_UART_MSPINIT_CB_ID :
|
|
huart->MspInitCallback = HAL_UART_MspInit;
|
|
break;
|
|
|
|
case HAL_UART_MSPDEINIT_CB_ID :
|
|
huart->MspDeInitCallback = HAL_UART_MspDeInit;
|
|
break;
|
|
|
|
default :
|
|
/* Update the error code */
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Update the error code */
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
/* Return error status */
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Register a User UART Rx Event Callback
|
|
* To be used instead of the weak predefined callback
|
|
* @param huart Uart handle
|
|
* @param pCallback Pointer to the Rx Event Callback function
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_RegisterRxEventCallback(UART_HandleTypeDef *huart, pUART_RxEventCallbackTypeDef pCallback)
|
|
{
|
|
HAL_StatusTypeDef status = HAL_OK;
|
|
|
|
if (pCallback == NULL)
|
|
{
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(huart);
|
|
|
|
if (huart->gState == HAL_UART_STATE_READY)
|
|
{
|
|
huart->RxEventCallback = pCallback;
|
|
}
|
|
else
|
|
{
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
/* Release Lock */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief UnRegister the UART Rx Event Callback
|
|
* UART Rx Event Callback is redirected to the weak HAL_UARTEx_RxEventCallback() predefined callback
|
|
* @param huart Uart handle
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_UnRegisterRxEventCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
HAL_StatusTypeDef status = HAL_OK;
|
|
|
|
/* Process locked */
|
|
__HAL_LOCK(huart);
|
|
|
|
if (huart->gState == HAL_UART_STATE_READY)
|
|
{
|
|
huart->RxEventCallback = HAL_UARTEx_RxEventCallback; /* Legacy weak UART Rx Event Callback */
|
|
}
|
|
else
|
|
{
|
|
huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
|
|
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
/* Release Lock */
|
|
__HAL_UNLOCK(huart);
|
|
return status;
|
|
}
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup UART_Exported_Functions_Group2 IO operation functions
|
|
* @brief UART Transmit and Receive functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### IO operation functions #####
|
|
===============================================================================
|
|
This subsection provides a set of functions allowing to manage the UART asynchronous
|
|
and Half duplex data transfers.
|
|
|
|
(#) There are two modes of transfer:
|
|
(+) Blocking mode: The communication is performed in polling mode.
|
|
The HAL status of all data processing is returned by the same function
|
|
after finishing transfer.
|
|
(+) Non-Blocking mode: The communication is performed using Interrupts
|
|
or DMA, these API's return the HAL status.
|
|
The end of the data processing will be indicated through the
|
|
dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
|
|
using DMA mode.
|
|
The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
|
|
will be executed respectively at the end of the transmit or receive process
|
|
The HAL_UART_ErrorCallback()user callback will be executed when a communication error is detected.
|
|
|
|
(#) Blocking mode API's are :
|
|
(+) HAL_UART_Transmit()
|
|
(+) HAL_UART_Receive()
|
|
|
|
(#) Non-Blocking mode API's with Interrupt are :
|
|
(+) HAL_UART_Transmit_IT()
|
|
(+) HAL_UART_Receive_IT()
|
|
(+) HAL_UART_IRQHandler()
|
|
|
|
(#) Non-Blocking mode API's with DMA are :
|
|
(+) HAL_UART_Transmit_DMA()
|
|
(+) HAL_UART_Receive_DMA()
|
|
(+) HAL_UART_DMAPause()
|
|
(+) HAL_UART_DMAResume()
|
|
(+) HAL_UART_DMAStop()
|
|
|
|
(#) A set of Transfer Complete Callbacks are provided in Non_Blocking mode:
|
|
(+) HAL_UART_TxHalfCpltCallback()
|
|
(+) HAL_UART_TxCpltCallback()
|
|
(+) HAL_UART_RxHalfCpltCallback()
|
|
(+) HAL_UART_RxCpltCallback()
|
|
(+) HAL_UART_ErrorCallback()
|
|
|
|
(#) Non-Blocking mode transfers could be aborted using Abort API's :
|
|
(+) HAL_UART_Abort()
|
|
(+) HAL_UART_AbortTransmit()
|
|
(+) HAL_UART_AbortReceive()
|
|
(+) HAL_UART_Abort_IT()
|
|
(+) HAL_UART_AbortTransmit_IT()
|
|
(+) HAL_UART_AbortReceive_IT()
|
|
|
|
(#) For Abort services based on interrupts (HAL_UART_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
|
|
(+) HAL_UART_AbortCpltCallback()
|
|
(+) HAL_UART_AbortTransmitCpltCallback()
|
|
(+) HAL_UART_AbortReceiveCpltCallback()
|
|
|
|
(#) A Rx Event Reception Callback (Rx event notification) is available for Non_Blocking modes of enhanced reception services:
|
|
(+) HAL_UARTEx_RxEventCallback()
|
|
|
|
(#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
|
|
Errors are handled as follows :
|
|
(+) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
|
|
to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
|
|
Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
|
|
and HAL_UART_ErrorCallback() user callback is executed. Transfer is kept ongoing on UART side.
|
|
If user wants to abort it, Abort services should be called by user.
|
|
(+) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
|
|
This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
|
|
Error code is set to allow user to identify error type, and HAL_UART_ErrorCallback() user callback is executed.
|
|
|
|
-@- In the Half duplex communication, it is forbidden to run the transmit
|
|
and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX can't be useful.
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Sends an amount of data in blocking mode.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the sent data is handled as a set of u16. In this case, Size must indicate the number
|
|
* of u16 provided through pData.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be sent
|
|
* @param Timeout Timeout duration
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
|
{
|
|
const uint8_t *pdata8bits;
|
|
const uint16_t *pdata16bits;
|
|
uint32_t tickstart = 0U;
|
|
|
|
/* Check that a Tx process is not already ongoing */
|
|
if (huart->gState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->gState = HAL_UART_STATE_BUSY_TX;
|
|
|
|
/* Init tickstart for timeout management */
|
|
tickstart = HAL_GetTick();
|
|
|
|
huart->TxXferSize = Size;
|
|
huart->TxXferCount = Size;
|
|
|
|
/* In case of 9bits/No Parity transfer, pData needs to be handled as a uint16_t pointer */
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
|
{
|
|
pdata8bits = NULL;
|
|
pdata16bits = (const uint16_t *) pData;
|
|
}
|
|
else
|
|
{
|
|
pdata8bits = pData;
|
|
pdata16bits = NULL;
|
|
}
|
|
|
|
while (huart->TxXferCount > 0U)
|
|
{
|
|
if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
if (pdata8bits == NULL)
|
|
{
|
|
huart->Instance->DR = (uint16_t)(*pdata16bits & 0x01FFU);
|
|
pdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
huart->Instance->DR = (uint8_t)(*pdata8bits & 0xFFU);
|
|
pdata8bits++;
|
|
}
|
|
huart->TxXferCount--;
|
|
}
|
|
|
|
if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
|
|
/* At end of Tx process, restore huart->gState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receives an amount of data in blocking mode.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the received data is handled as a set of u16. In this case, Size must indicate the number
|
|
* of u16 available through pData.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
|
* @param Timeout Timeout duration
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
|
{
|
|
uint8_t *pdata8bits;
|
|
uint16_t *pdata16bits;
|
|
uint32_t tickstart = 0U;
|
|
|
|
/* Check that a Rx process is not already ongoing */
|
|
if (huart->RxState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->RxState = HAL_UART_STATE_BUSY_RX;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* Init tickstart for timeout management */
|
|
tickstart = HAL_GetTick();
|
|
|
|
huart->RxXferSize = Size;
|
|
huart->RxXferCount = Size;
|
|
|
|
/* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
|
{
|
|
pdata8bits = NULL;
|
|
pdata16bits = (uint16_t *) pData;
|
|
}
|
|
else
|
|
{
|
|
pdata8bits = pData;
|
|
pdata16bits = NULL;
|
|
}
|
|
|
|
/* Check the remain data to be received */
|
|
while (huart->RxXferCount > 0U)
|
|
{
|
|
if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
|
|
{
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
if (pdata8bits == NULL)
|
|
{
|
|
*pdata16bits = (uint16_t)(huart->Instance->DR & 0x01FF);
|
|
pdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
|
|
{
|
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
|
|
}
|
|
else
|
|
{
|
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
|
|
}
|
|
pdata8bits++;
|
|
}
|
|
huart->RxXferCount--;
|
|
}
|
|
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Sends an amount of data in non blocking mode.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the sent data is handled as a set of u16. In this case, Size must indicate the number
|
|
* of u16 provided through pData.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be sent
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size)
|
|
{
|
|
/* Check that a Tx process is not already ongoing */
|
|
if (huart->gState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
huart->pTxBuffPtr = pData;
|
|
huart->TxXferSize = Size;
|
|
huart->TxXferCount = Size;
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->gState = HAL_UART_STATE_BUSY_TX;
|
|
|
|
/* Enable the UART Transmit data register empty Interrupt */
|
|
__HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receives an amount of data in non blocking mode.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the received data is handled as a set of u16. In this case, Size must indicate the number
|
|
* of u16 available through pData.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
|
{
|
|
/* Check that a Rx process is not already ongoing */
|
|
if (huart->RxState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Set Reception type to Standard reception */
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
return (UART_Start_Receive_IT(huart, pData, Size));
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Sends an amount of data in DMA mode.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the sent data is handled as a set of u16. In this case, Size must indicate the number
|
|
* of u16 provided through pData.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be sent
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size)
|
|
{
|
|
const uint32_t *tmp;
|
|
|
|
/* Check that a Tx process is not already ongoing */
|
|
if (huart->gState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
huart->pTxBuffPtr = pData;
|
|
huart->TxXferSize = Size;
|
|
huart->TxXferCount = Size;
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->gState = HAL_UART_STATE_BUSY_TX;
|
|
|
|
/* Set the UART DMA transfer complete callback */
|
|
huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
|
|
|
|
/* Set the UART DMA Half transfer complete callback */
|
|
huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
|
|
|
|
/* Set the DMA error callback */
|
|
huart->hdmatx->XferErrorCallback = UART_DMAError;
|
|
|
|
/* Set the DMA abort callback */
|
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
|
|
/* Enable the UART transmit DMA stream */
|
|
tmp = (const uint32_t *)&pData;
|
|
if (HAL_DMA_Start_IT(huart->hdmatx, *(const uint32_t *)tmp, (uint32_t)&huart->Instance->DR, Size) != HAL_OK)
|
|
{
|
|
/* Set error code to DMA */
|
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
|
|
/* Restore huart->gState to ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
/* Clear the TC flag in the SR register by writing 0 to it */
|
|
__HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
|
|
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
|
in the UART CR3 register */
|
|
ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receives an amount of data in DMA mode.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
|
* the received data is handled as a set of u16. In this case, Size must indicate the number
|
|
* of u16 available through pData.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
|
* @note When the UART parity is enabled (PCE = 1) the received data contains the parity bit.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
|
{
|
|
/* Check that a Rx process is not already ongoing */
|
|
if (huart->RxState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Set Reception type to Standard reception */
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
return (UART_Start_Receive_DMA(huart, pData, Size));
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Pauses the DMA Transfer.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t dmarequest = 0x00U;
|
|
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
|
|
if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
|
|
{
|
|
/* Disable the UART DMA Tx request */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
}
|
|
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
|
if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
|
|
{
|
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Disable the UART DMA Rx request */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Resumes the DMA Transfer.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
|
|
{
|
|
|
|
if (huart->gState == HAL_UART_STATE_BUSY_TX)
|
|
{
|
|
/* Enable the UART DMA Tx request */
|
|
ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
}
|
|
|
|
if (huart->RxState == HAL_UART_STATE_BUSY_RX)
|
|
{
|
|
/* Clear the Overrun flag before resuming the Rx transfer*/
|
|
__HAL_UART_CLEAR_OREFLAG(huart);
|
|
|
|
/* Re-enable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
if (huart->Init.Parity != UART_PARITY_NONE)
|
|
{
|
|
ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
|
}
|
|
ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Enable the UART DMA Rx request */
|
|
ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Stops the DMA Transfer.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t dmarequest = 0x00U;
|
|
/* The Lock is not implemented on this API to allow the user application
|
|
to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback():
|
|
when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
|
|
and the correspond call back is executed HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback()
|
|
*/
|
|
|
|
/* Stop UART DMA Tx request if ongoing */
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
|
|
if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Abort the UART DMA Tx stream */
|
|
if (huart->hdmatx != NULL)
|
|
{
|
|
HAL_DMA_Abort(huart->hdmatx);
|
|
}
|
|
UART_EndTxTransfer(huart);
|
|
}
|
|
|
|
/* Stop UART DMA Rx request if ongoing */
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
|
if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the UART DMA Rx stream */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
HAL_DMA_Abort(huart->hdmarx);
|
|
}
|
|
UART_EndRxTransfer(huart);
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Receive an amount of data in blocking mode till either the expected number of data is received or an IDLE event occurs.
|
|
* @note HAL_OK is returned if reception is completed (expected number of data has been received)
|
|
* or if reception is stopped after IDLE event (less than the expected number of data has been received)
|
|
* In this case, RxLen output parameter indicates number of data available in reception buffer.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M = 01),
|
|
* the received data is handled as a set of uint16_t. In this case, Size must indicate the number
|
|
* of uint16_t available through pData.
|
|
* @param huart UART handle.
|
|
* @param pData Pointer to data buffer (uint8_t or uint16_t data elements).
|
|
* @param Size Amount of data elements (uint8_t or uint16_t) to be received.
|
|
* @param RxLen Number of data elements finally received (could be lower than Size, in case reception ends on IDLE event)
|
|
* @param Timeout Timeout duration expressed in ms (covers the whole reception sequence).
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint16_t *RxLen,
|
|
uint32_t Timeout)
|
|
{
|
|
uint8_t *pdata8bits;
|
|
uint16_t *pdata16bits;
|
|
uint32_t tickstart;
|
|
|
|
/* Check that a Rx process is not already ongoing */
|
|
if (huart->RxState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->RxState = HAL_UART_STATE_BUSY_RX;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
/* Init tickstart for timeout management */
|
|
tickstart = HAL_GetTick();
|
|
|
|
huart->RxXferSize = Size;
|
|
huart->RxXferCount = Size;
|
|
|
|
/* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
|
{
|
|
pdata8bits = NULL;
|
|
pdata16bits = (uint16_t *) pData;
|
|
}
|
|
else
|
|
{
|
|
pdata8bits = pData;
|
|
pdata16bits = NULL;
|
|
}
|
|
|
|
/* Initialize output number of received elements */
|
|
*RxLen = 0U;
|
|
|
|
/* as long as data have to be received */
|
|
while (huart->RxXferCount > 0U)
|
|
{
|
|
/* Check if IDLE flag is set */
|
|
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE))
|
|
{
|
|
/* Clear IDLE flag in ISR */
|
|
__HAL_UART_CLEAR_IDLEFLAG(huart);
|
|
|
|
/* If Set, but no data ever received, clear flag without exiting loop */
|
|
/* If Set, and data has already been received, this means Idle Event is valid : End reception */
|
|
if (*RxLen > 0U)
|
|
{
|
|
huart->RxEventType = HAL_UART_RXEVENT_IDLE;
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_OK;
|
|
}
|
|
}
|
|
|
|
/* Check if RXNE flag is set */
|
|
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE))
|
|
{
|
|
if (pdata8bits == NULL)
|
|
{
|
|
*pdata16bits = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
|
|
pdata16bits++;
|
|
}
|
|
else
|
|
{
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
|
|
{
|
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
|
|
}
|
|
else
|
|
{
|
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
|
|
}
|
|
|
|
pdata8bits++;
|
|
}
|
|
/* Increment number of received elements */
|
|
*RxLen += 1U;
|
|
huart->RxXferCount--;
|
|
}
|
|
|
|
/* Check for the Timeout */
|
|
if (Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
|
|
{
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Set number of received elements in output parameter : RxLen */
|
|
*RxLen = huart->RxXferSize - huart->RxXferCount;
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receive an amount of data in interrupt mode till either the expected number of data is received or an IDLE event occurs.
|
|
* @note Reception is initiated by this function call. Further progress of reception is achieved thanks
|
|
* to UART interrupts raised by RXNE and IDLE events. Callback is called at end of reception indicating
|
|
* number of received data elements.
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M = 01),
|
|
* the received data is handled as a set of uint16_t. In this case, Size must indicate the number
|
|
* of uint16_t available through pData.
|
|
* @param huart UART handle.
|
|
* @param pData Pointer to data buffer (uint8_t or uint16_t data elements).
|
|
* @param Size Amount of data elements (uint8_t or uint16_t) to be received.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
|
{
|
|
HAL_StatusTypeDef status;
|
|
|
|
/* Check that a Rx process is not already ongoing */
|
|
if (huart->RxState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Set Reception type to reception till IDLE Event*/
|
|
huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
status = UART_Start_Receive_IT(huart, pData, Size);
|
|
|
|
/* Check Rx process has been successfully started */
|
|
if (status == HAL_OK)
|
|
{
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
__HAL_UART_CLEAR_IDLEFLAG(huart);
|
|
ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
|
|
}
|
|
else
|
|
{
|
|
/* In case of errors already pending when reception is started,
|
|
Interrupts may have already been raised and lead to reception abortion.
|
|
(Overrun error for instance).
|
|
In such case Reception Type has been reset to HAL_UART_RECEPTION_STANDARD. */
|
|
status = HAL_ERROR;
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Receive an amount of data in DMA mode till either the expected number of data is received or an IDLE event occurs.
|
|
* @note Reception is initiated by this function call. Further progress of reception is achieved thanks
|
|
* to DMA services, transferring automatically received data elements in user reception buffer and
|
|
* calling registered callbacks at half/end of reception. UART IDLE events are also used to consider
|
|
* reception phase as ended. In all cases, callback execution will indicate number of received data elements.
|
|
* @note When the UART parity is enabled (PCE = 1), the received data contain
|
|
* the parity bit (MSB position).
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M = 01),
|
|
* the received data is handled as a set of uint16_t. In this case, Size must indicate the number
|
|
* of uint16_t available through pData.
|
|
* @param huart UART handle.
|
|
* @param pData Pointer to data buffer (uint8_t or uint16_t data elements).
|
|
* @param Size Amount of data elements (uint8_t or uint16_t) to be received.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
|
{
|
|
HAL_StatusTypeDef status;
|
|
|
|
/* Check that a Rx process is not already ongoing */
|
|
if (huart->RxState == HAL_UART_STATE_READY)
|
|
{
|
|
if ((pData == NULL) || (Size == 0U))
|
|
{
|
|
return HAL_ERROR;
|
|
}
|
|
|
|
/* Set Reception type to reception till IDLE Event*/
|
|
huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
status = UART_Start_Receive_DMA(huart, pData, Size);
|
|
|
|
/* Check Rx process has been successfully started */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
__HAL_UART_CLEAR_IDLEFLAG(huart);
|
|
ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
|
|
}
|
|
else
|
|
{
|
|
/* In case of errors already pending when reception is started,
|
|
Interrupts may have already been raised and lead to reception abortion.
|
|
(Overrun error for instance).
|
|
In such case Reception Type has been reset to HAL_UART_RECEPTION_STANDARD. */
|
|
status = HAL_ERROR;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Provide Rx Event type that has lead to RxEvent callback execution.
|
|
* @note When HAL_UARTEx_ReceiveToIdle_IT() or HAL_UARTEx_ReceiveToIdle_DMA() API are called, progress
|
|
* of reception process is provided to application through calls of Rx Event callback (either default one
|
|
* HAL_UARTEx_RxEventCallback() or user registered one). As several types of events could occur (IDLE event,
|
|
* Half Transfer, or Transfer Complete), this function allows to retrieve the Rx Event type that has lead
|
|
* to Rx Event callback execution.
|
|
* @note This function is expected to be called within the user implementation of Rx Event Callback,
|
|
* in order to provide the accurate value :
|
|
* In Interrupt Mode :
|
|
* - HAL_UART_RXEVENT_TC : when Reception has been completed (expected nb of data has been received)
|
|
* - HAL_UART_RXEVENT_IDLE : when Idle event occurred prior reception has been completed (nb of
|
|
* received data is lower than expected one)
|
|
* In DMA Mode :
|
|
* - HAL_UART_RXEVENT_TC : when Reception has been completed (expected nb of data has been received)
|
|
* - HAL_UART_RXEVENT_HT : when half of expected nb of data has been received
|
|
* - HAL_UART_RXEVENT_IDLE : when Idle event occurred prior reception has been completed (nb of
|
|
* received data is lower than expected one).
|
|
* In DMA mode, RxEvent callback could be called several times;
|
|
* When DMA is configured in Normal Mode, HT event does not stop Reception process;
|
|
* When DMA is configured in Circular Mode, HT, TC or IDLE events don't stop Reception process;
|
|
* @param huart UART handle.
|
|
* @retval Rx Event Type (returned value will be a value of @ref UART_RxEvent_Type_Values)
|
|
*/
|
|
HAL_UART_RxEventTypeTypeDef HAL_UARTEx_GetRxEventType(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Return Rx Event type value, as stored in UART handle */
|
|
return(huart->RxEventType);
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing transfers (blocking mode).
|
|
* @param huart UART handle.
|
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable UART Interrupts (Tx and Rx)
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
|
|
* - Set handle State to READY
|
|
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
|
|
}
|
|
|
|
/* Disable the UART DMA Tx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Abort the UART DMA Tx stream: use blocking DMA Abort API (no callback) */
|
|
if (huart->hdmatx != NULL)
|
|
{
|
|
/* Set the UART DMA Abort callback to Null.
|
|
No call back execution at end of DMA abort procedure */
|
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
|
|
if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Disable the UART DMA Rx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the UART DMA Rx stream: use blocking DMA Abort API (no callback) */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
/* Set the UART DMA Abort callback to Null.
|
|
No call back execution at end of DMA abort procedure */
|
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
|
|
if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Reset Tx and Rx transfer counters */
|
|
huart->TxXferCount = 0x00U;
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Reset ErrorCode */
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
|
|
/* Restore huart->RxState and huart->gState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing Transmit transfer (blocking mode).
|
|
* @param huart UART handle.
|
|
* @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable UART Interrupts (Tx)
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
|
|
* - Set handle State to READY
|
|
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable TXEIE and TCIE interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
|
|
/* Disable the UART DMA Tx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Abort the UART DMA Tx stream : use blocking DMA Abort API (no callback) */
|
|
if (huart->hdmatx != NULL)
|
|
{
|
|
/* Set the UART DMA Abort callback to Null.
|
|
No call back execution at end of DMA abort procedure */
|
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
|
|
if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Reset Tx transfer counter */
|
|
huart->TxXferCount = 0x00U;
|
|
|
|
/* Restore huart->gState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing Receive transfer (blocking mode).
|
|
* @param huart UART handle.
|
|
* @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable UART Interrupts (Rx)
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
|
|
* - Set handle State to READY
|
|
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_AbortReceive(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
|
|
}
|
|
|
|
/* Disable the UART DMA Rx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the UART DMA Rx stream : use blocking DMA Abort API (no callback) */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
/* Set the UART DMA Abort callback to Null.
|
|
No call back execution at end of DMA abort procedure */
|
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
|
|
if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
|
|
{
|
|
if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
|
|
{
|
|
/* Set error code to DMA */
|
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Reset Rx transfer counter */
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing transfers (Interrupt mode).
|
|
* @param huart UART handle.
|
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable UART Interrupts (Tx and Rx)
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
|
|
* - Set handle State to READY
|
|
* - At abort completion, call user abort complete callback
|
|
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
|
|
* considered as completed only when user abort complete callback is executed (not when exiting function).
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t AbortCplt = 0x01U;
|
|
|
|
/* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
|
|
}
|
|
|
|
/* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised
|
|
before any call to DMA Abort functions */
|
|
/* DMA Tx Handle is valid */
|
|
if (huart->hdmatx != NULL)
|
|
{
|
|
/* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
|
|
Otherwise, set it to NULL */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback;
|
|
}
|
|
else
|
|
{
|
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
}
|
|
}
|
|
/* DMA Rx Handle is valid */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
/* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
|
|
Otherwise, set it to NULL */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback;
|
|
}
|
|
else
|
|
{
|
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
}
|
|
}
|
|
|
|
/* Disable the UART DMA Tx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
/* Disable DMA Tx at UART level */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Abort the UART DMA Tx stream : use non blocking DMA Abort API (callback) */
|
|
if (huart->hdmatx != NULL)
|
|
{
|
|
/* UART Tx DMA Abort callback has already been initialised :
|
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
|
|
|
/* Abort DMA TX */
|
|
if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
|
|
{
|
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
}
|
|
else
|
|
{
|
|
AbortCplt = 0x00U;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Disable the UART DMA Rx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the UART DMA Rx stream : use non blocking DMA Abort API (callback) */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
/* UART Rx DMA Abort callback has already been initialised :
|
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
|
|
|
/* Abort DMA RX */
|
|
if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
|
|
{
|
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
AbortCplt = 0x01U;
|
|
}
|
|
else
|
|
{
|
|
AbortCplt = 0x00U;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* if no DMA abort complete callback execution is required => call user Abort Complete callback */
|
|
if (AbortCplt == 0x01U)
|
|
{
|
|
/* Reset Tx and Rx transfer counters */
|
|
huart->TxXferCount = 0x00U;
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Reset ErrorCode */
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
|
|
/* Restore huart->gState and huart->RxState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort complete callback */
|
|
huart->AbortCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort complete callback */
|
|
HAL_UART_AbortCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing Transmit transfer (Interrupt mode).
|
|
* @param huart UART handle.
|
|
* @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable UART Interrupts (Tx)
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
|
|
* - Set handle State to READY
|
|
* - At abort completion, call user abort complete callback
|
|
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
|
|
* considered as completed only when user abort complete callback is executed (not when exiting function).
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_AbortTransmit_IT(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable TXEIE and TCIE interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
|
|
/* Disable the UART DMA Tx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Abort the UART DMA Tx stream : use blocking DMA Abort API (no callback) */
|
|
if (huart->hdmatx != NULL)
|
|
{
|
|
/* Set the UART DMA Abort callback :
|
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
|
huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback;
|
|
|
|
/* Abort DMA TX */
|
|
if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
|
|
{
|
|
/* Call Directly huart->hdmatx->XferAbortCallback function in case of error */
|
|
huart->hdmatx->XferAbortCallback(huart->hdmatx);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Reset Tx transfer counter */
|
|
huart->TxXferCount = 0x00U;
|
|
|
|
/* Restore huart->gState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Transmit Complete Callback */
|
|
huart->AbortTransmitCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort Transmit Complete Callback */
|
|
HAL_UART_AbortTransmitCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Reset Tx transfer counter */
|
|
huart->TxXferCount = 0x00U;
|
|
|
|
/* Restore huart->gState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Transmit Complete Callback */
|
|
huart->AbortTransmitCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort Transmit Complete Callback */
|
|
HAL_UART_AbortTransmitCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Abort ongoing Receive transfer (Interrupt mode).
|
|
* @param huart UART handle.
|
|
* @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
|
|
* This procedure performs following operations :
|
|
* - Disable UART Interrupts (Rx)
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
|
|
* - Set handle State to READY
|
|
* - At abort completion, call user abort complete callback
|
|
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
|
|
* considered as completed only when user abort complete callback is executed (not when exiting function).
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_UART_AbortReceive_IT(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
|
|
}
|
|
|
|
/* Disable the UART DMA Rx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the UART DMA Rx stream : use blocking DMA Abort API (no callback) */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
/* Set the UART DMA Abort callback :
|
|
will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
|
|
huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback;
|
|
|
|
/* Abort DMA RX */
|
|
if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
|
|
{
|
|
/* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
|
|
huart->hdmarx->XferAbortCallback(huart->hdmarx);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Reset Rx transfer counter */
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Receive Complete Callback */
|
|
huart->AbortReceiveCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort Receive Complete Callback */
|
|
HAL_UART_AbortReceiveCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Reset Rx transfer counter */
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Receive Complete Callback */
|
|
huart->AbortReceiveCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort Receive Complete Callback */
|
|
HAL_UART_AbortReceiveCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief This function handles UART interrupt request.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t isrflags = READ_REG(huart->Instance->SR);
|
|
uint32_t cr1its = READ_REG(huart->Instance->CR1);
|
|
uint32_t cr3its = READ_REG(huart->Instance->CR3);
|
|
uint32_t errorflags = 0x00U;
|
|
uint32_t dmarequest = 0x00U;
|
|
|
|
/* If no error occurs */
|
|
errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE));
|
|
if (errorflags == RESET)
|
|
{
|
|
/* UART in mode Receiver -------------------------------------------------*/
|
|
if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
|
|
{
|
|
UART_Receive_IT(huart);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* If some errors occur */
|
|
if ((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET)
|
|
|| ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))
|
|
{
|
|
/* UART parity error interrupt occurred ----------------------------------*/
|
|
if (((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
|
|
{
|
|
huart->ErrorCode |= HAL_UART_ERROR_PE;
|
|
}
|
|
|
|
/* UART noise error interrupt occurred -----------------------------------*/
|
|
if (((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
|
|
{
|
|
huart->ErrorCode |= HAL_UART_ERROR_NE;
|
|
}
|
|
|
|
/* UART frame error interrupt occurred -----------------------------------*/
|
|
if (((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
|
|
{
|
|
huart->ErrorCode |= HAL_UART_ERROR_FE;
|
|
}
|
|
|
|
/* UART Over-Run interrupt occurred --------------------------------------*/
|
|
if (((isrflags & USART_SR_ORE) != RESET) && (((cr1its & USART_CR1_RXNEIE) != RESET)
|
|
|| ((cr3its & USART_CR3_EIE) != RESET)))
|
|
{
|
|
huart->ErrorCode |= HAL_UART_ERROR_ORE;
|
|
}
|
|
|
|
/* Call UART Error Call back function if need be --------------------------*/
|
|
if (huart->ErrorCode != HAL_UART_ERROR_NONE)
|
|
{
|
|
/* UART in mode Receiver -----------------------------------------------*/
|
|
if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
|
|
{
|
|
UART_Receive_IT(huart);
|
|
}
|
|
|
|
/* If Overrun error occurs, or if any error occurs in DMA mode reception,
|
|
consider error as blocking */
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
|
if (((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) || dmarequest)
|
|
{
|
|
/* Blocking error : transfer is aborted
|
|
Set the UART state ready to be able to start again the process,
|
|
Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
|
|
UART_EndRxTransfer(huart);
|
|
|
|
/* Disable the UART DMA Rx request if enabled */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* Abort the UART DMA Rx stream */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
/* Set the UART DMA Abort callback :
|
|
will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
|
|
huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;
|
|
if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
|
|
{
|
|
/* Call Directly XferAbortCallback function in case of error */
|
|
huart->hdmarx->XferAbortCallback(huart->hdmarx);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Call user error callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered error callback*/
|
|
huart->ErrorCallback(huart);
|
|
#else
|
|
/*Call legacy weak error callback*/
|
|
HAL_UART_ErrorCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Call user error callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered error callback*/
|
|
huart->ErrorCallback(huart);
|
|
#else
|
|
/*Call legacy weak error callback*/
|
|
HAL_UART_ErrorCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Non Blocking error : transfer could go on.
|
|
Error is notified to user through user error callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered error callback*/
|
|
huart->ErrorCallback(huart);
|
|
#else
|
|
/*Call legacy weak error callback*/
|
|
HAL_UART_ErrorCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
}
|
|
}
|
|
return;
|
|
} /* End if some error occurs */
|
|
|
|
/* Check current reception Mode :
|
|
If Reception till IDLE event has been selected : */
|
|
if ((huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
&& ((isrflags & USART_SR_IDLE) != 0U)
|
|
&& ((cr1its & USART_CR1_IDLEIE) != 0U))
|
|
{
|
|
__HAL_UART_CLEAR_IDLEFLAG(huart);
|
|
|
|
/* Check if DMA mode is enabled in UART */
|
|
if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
|
|
{
|
|
/* DMA mode enabled */
|
|
/* Check received length : If all expected data are received, do nothing,
|
|
(DMA cplt callback will be called).
|
|
Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
|
|
uint16_t nb_remaining_rx_data = (uint16_t) __HAL_DMA_GET_COUNTER(huart->hdmarx);
|
|
if ((nb_remaining_rx_data > 0U)
|
|
&& (nb_remaining_rx_data < huart->RxXferSize))
|
|
{
|
|
/* Reception is not complete */
|
|
huart->RxXferCount = nb_remaining_rx_data;
|
|
|
|
/* In Normal mode, end DMA xfer and HAL UART Rx process*/
|
|
if (huart->hdmarx->Init.Mode != DMA_CIRCULAR)
|
|
{
|
|
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Disable the DMA transfer for the receiver request by resetting the DMAR bit
|
|
in the UART CR3 register */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
|
|
|
|
/* Last bytes received, so no need as the abort is immediate */
|
|
(void)HAL_DMA_Abort(huart->hdmarx);
|
|
}
|
|
|
|
/* Initialize type of RxEvent that correspond to RxEvent callback execution;
|
|
In this case, Rx Event type is Idle Event */
|
|
huart->RxEventType = HAL_UART_RXEVENT_IDLE;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx Event callback*/
|
|
huart->RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
|
|
#else
|
|
/*Call legacy weak Rx Event callback*/
|
|
HAL_UARTEx_RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* If DMA is in Circular mode, Idle event is to be reported to user
|
|
even if occurring after a Transfer Complete event from DMA */
|
|
if (nb_remaining_rx_data == huart->RxXferSize)
|
|
{
|
|
if (huart->hdmarx->Init.Mode == DMA_CIRCULAR)
|
|
{
|
|
/* Initialize type of RxEvent that correspond to RxEvent callback execution;
|
|
In this case, Rx Event type is Idle Event */
|
|
huart->RxEventType = HAL_UART_RXEVENT_IDLE;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx Event callback*/
|
|
huart->RxEventCallback(huart, huart->RxXferSize);
|
|
#else
|
|
/*Call legacy weak Rx Event callback*/
|
|
HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
|
|
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
/* DMA mode not enabled */
|
|
/* Check received length : If all expected data are received, do nothing.
|
|
Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
|
|
uint16_t nb_rx_data = huart->RxXferSize - huart->RxXferCount;
|
|
if ((huart->RxXferCount > 0U)
|
|
&& (nb_rx_data > 0U))
|
|
{
|
|
/* Disable the UART Parity Error Interrupt and RXNE interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
|
|
|
/* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Rx process is completed, restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
|
|
|
|
/* Initialize type of RxEvent that correspond to RxEvent callback execution;
|
|
In this case, Rx Event type is Idle Event */
|
|
huart->RxEventType = HAL_UART_RXEVENT_IDLE;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx complete callback*/
|
|
huart->RxEventCallback(huart, nb_rx_data);
|
|
#else
|
|
/*Call legacy weak Rx Event callback*/
|
|
HAL_UARTEx_RxEventCallback(huart, nb_rx_data);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* UART in mode Transmitter ------------------------------------------------*/
|
|
if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
|
|
{
|
|
UART_Transmit_IT(huart);
|
|
return;
|
|
}
|
|
|
|
/* UART in mode Transmitter end --------------------------------------------*/
|
|
if (((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
|
|
{
|
|
UART_EndTransmit_IT(huart);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Tx Transfer completed callbacks.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_UART_TxCpltCallback could be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Tx Half Transfer completed callbacks.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_UART_TxHalfCpltCallback could be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Rx Transfer completed callbacks.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_UART_RxCpltCallback could be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Rx Half Transfer completed callbacks.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_UART_RxHalfCpltCallback could be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief UART error callbacks.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
|
the HAL_UART_ErrorCallback could be implemented in the user file
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief UART Abort Complete callback.
|
|
* @param huart UART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_AbortCpltCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_UART_AbortCpltCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief UART Abort Complete callback.
|
|
* @param huart UART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_AbortTransmitCpltCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_UART_AbortTransmitCpltCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief UART Abort Receive Complete callback.
|
|
* @param huart UART handle.
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UART_AbortReceiveCpltCallback(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_UART_AbortReceiveCpltCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @brief Reception Event Callback (Rx event notification called after use of advanced reception service).
|
|
* @param huart UART handle
|
|
* @param Size Number of data available in application reception buffer (indicates a position in
|
|
* reception buffer until which, data are available)
|
|
* @retval None
|
|
*/
|
|
__weak void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
|
|
{
|
|
/* Prevent unused argument(s) compilation warning */
|
|
UNUSED(huart);
|
|
UNUSED(Size);
|
|
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
|
the HAL_UARTEx_RxEventCallback can be implemented in the user file.
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
|
|
* @brief UART control functions
|
|
*
|
|
@verbatim
|
|
==============================================================================
|
|
##### Peripheral Control functions #####
|
|
==============================================================================
|
|
[..]
|
|
This subsection provides a set of functions allowing to control the UART:
|
|
(+) HAL_LIN_SendBreak() API can be helpful to transmit the break character.
|
|
(+) HAL_MultiProcessor_EnterMuteMode() API can be helpful to enter the UART in mute mode.
|
|
(+) HAL_MultiProcessor_ExitMuteMode() API can be helpful to exit the UART mute mode by software.
|
|
(+) HAL_HalfDuplex_EnableTransmitter() API to enable the UART transmitter and disables the UART receiver in Half Duplex mode
|
|
(+) HAL_HalfDuplex_EnableReceiver() API to enable the UART receiver and disables the UART transmitter in Half Duplex mode
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Transmits break characters.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(huart);
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/* Send break characters */
|
|
ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_SBK);
|
|
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Enters the UART in mute mode.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(huart);
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/* Enable the USART mute mode by setting the RWU bit in the CR1 register */
|
|
ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RWU);
|
|
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Exits the UART mute mode: wake up software.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_MultiProcessor_ExitMuteMode(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_UART_INSTANCE(huart->Instance));
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(huart);
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/* Disable the USART mute mode by clearing the RWU bit in the CR1 register */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_RWU);
|
|
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Enables the UART transmitter and disables the UART receiver.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t tmpreg = 0x00U;
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(huart);
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
|
tmpreg = huart->Instance->CR1;
|
|
|
|
/* Clear TE and RE bits */
|
|
tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
|
|
|
|
/* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
|
|
tmpreg |= (uint32_t)USART_CR1_TE;
|
|
|
|
/* Write to USART CR1 */
|
|
WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg);
|
|
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Enables the UART receiver and disables the UART transmitter.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t tmpreg = 0x00U;
|
|
|
|
/* Process Locked */
|
|
__HAL_LOCK(huart);
|
|
|
|
huart->gState = HAL_UART_STATE_BUSY;
|
|
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
|
tmpreg = huart->Instance->CR1;
|
|
|
|
/* Clear TE and RE bits */
|
|
tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
|
|
|
|
/* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
|
|
tmpreg |= (uint32_t)USART_CR1_RE;
|
|
|
|
/* Write to USART CR1 */
|
|
WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg);
|
|
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup UART_Exported_Functions_Group4 Peripheral State and Errors functions
|
|
* @brief UART State and Errors functions
|
|
*
|
|
@verbatim
|
|
==============================================================================
|
|
##### Peripheral State and Errors functions #####
|
|
==============================================================================
|
|
[..]
|
|
This subsection provides a set of functions allowing to return the State of
|
|
UART communication process, return Peripheral Errors occurred during communication
|
|
process
|
|
(+) HAL_UART_GetState() API can be helpful to check in run-time the state of the UART peripheral.
|
|
(+) HAL_UART_GetError() check in run-time errors that could be occurred during communication.
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Returns the UART state.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL state
|
|
*/
|
|
HAL_UART_StateTypeDef HAL_UART_GetState(const UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t temp1 = 0x00U, temp2 = 0x00U;
|
|
temp1 = huart->gState;
|
|
temp2 = huart->RxState;
|
|
|
|
return (HAL_UART_StateTypeDef)(temp1 | temp2);
|
|
}
|
|
|
|
/**
|
|
* @brief Return the UART error code
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART.
|
|
* @retval UART Error Code
|
|
*/
|
|
uint32_t HAL_UART_GetError(const UART_HandleTypeDef *huart)
|
|
{
|
|
return huart->ErrorCode;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup UART_Private_Functions UART Private Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Initialize the callbacks to their default values.
|
|
* @param huart UART handle.
|
|
* @retval none
|
|
*/
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Init the UART Callback settings */
|
|
huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */
|
|
huart->TxCpltCallback = HAL_UART_TxCpltCallback; /* Legacy weak TxCpltCallback */
|
|
huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */
|
|
huart->RxCpltCallback = HAL_UART_RxCpltCallback; /* Legacy weak RxCpltCallback */
|
|
huart->ErrorCallback = HAL_UART_ErrorCallback; /* Legacy weak ErrorCallback */
|
|
huart->AbortCpltCallback = HAL_UART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
|
|
huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
|
|
huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback; /* Legacy weak AbortReceiveCpltCallback */
|
|
huart->RxEventCallback = HAL_UARTEx_RxEventCallback; /* Legacy weak RxEventCallback */
|
|
|
|
}
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
|
|
/**
|
|
* @brief DMA UART transmit process complete callback.
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
/* DMA Normal mode*/
|
|
if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
|
|
{
|
|
huart->TxXferCount = 0x00U;
|
|
|
|
/* Disable the DMA transfer for transmit request by setting the DMAT bit
|
|
in the UART CR3 register */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
|
|
|
|
/* Enable the UART Transmit Complete Interrupt */
|
|
ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
|
|
|
|
}
|
|
/* DMA Circular mode */
|
|
else
|
|
{
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Tx complete callback*/
|
|
huart->TxCpltCallback(huart);
|
|
#else
|
|
/*Call legacy weak Tx complete callback*/
|
|
HAL_UART_TxCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART transmit process half complete callback
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Tx complete callback*/
|
|
huart->TxHalfCpltCallback(huart);
|
|
#else
|
|
/*Call legacy weak Tx complete callback*/
|
|
HAL_UART_TxHalfCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART receive process complete callback.
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
/* DMA Normal mode*/
|
|
if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
|
|
{
|
|
huart->RxXferCount = 0U;
|
|
|
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Disable the DMA transfer for the receiver request by setting the DMAR bit
|
|
in the UART CR3 register */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
/* If Reception till IDLE event has been selected, Disable IDLE Interrupt */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
|
|
}
|
|
}
|
|
|
|
/* Initialize type of RxEvent that correspond to RxEvent callback execution;
|
|
In this case, Rx Event type is Transfer Complete */
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
/* Check current reception Mode :
|
|
If Reception till IDLE event has been selected : use Rx Event callback */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx Event callback*/
|
|
huart->RxEventCallback(huart, huart->RxXferSize);
|
|
#else
|
|
/*Call legacy weak Rx Event callback*/
|
|
HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* In other cases : use Rx Complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx complete callback*/
|
|
huart->RxCpltCallback(huart);
|
|
#else
|
|
/*Call legacy weak Rx complete callback*/
|
|
HAL_UART_RxCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART receive process half complete callback
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
/* Initialize type of RxEvent that correspond to RxEvent callback execution;
|
|
In this case, Rx Event type is Half Transfer */
|
|
huart->RxEventType = HAL_UART_RXEVENT_HT;
|
|
|
|
/* Check current reception Mode :
|
|
If Reception till IDLE event has been selected : use Rx Event callback */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx Event callback*/
|
|
huart->RxEventCallback(huart, huart->RxXferSize / 2U);
|
|
#else
|
|
/*Call legacy weak Rx Event callback*/
|
|
HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize / 2U);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* In other cases : use Rx Half Complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx Half complete callback*/
|
|
huart->RxHalfCpltCallback(huart);
|
|
#else
|
|
/*Call legacy weak Rx Half complete callback*/
|
|
HAL_UART_RxHalfCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART communication error callback.
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMAError(DMA_HandleTypeDef *hdma)
|
|
{
|
|
uint32_t dmarequest = 0x00U;
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
/* Stop UART DMA Tx request if ongoing */
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
|
|
if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
|
|
{
|
|
huart->TxXferCount = 0x00U;
|
|
UART_EndTxTransfer(huart);
|
|
}
|
|
|
|
/* Stop UART DMA Rx request if ongoing */
|
|
dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
|
|
if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
|
|
{
|
|
huart->RxXferCount = 0x00U;
|
|
UART_EndRxTransfer(huart);
|
|
}
|
|
|
|
huart->ErrorCode |= HAL_UART_ERROR_DMA;
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered error callback*/
|
|
huart->ErrorCallback(huart);
|
|
#else
|
|
/*Call legacy weak error callback*/
|
|
HAL_UART_ErrorCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief This function handles UART Communication Timeout. It waits
|
|
* until a flag is no longer in the specified status.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @param Flag specifies the UART flag to check.
|
|
* @param Status The actual Flag status (SET or RESET).
|
|
* @param Tickstart Tick start value
|
|
* @param Timeout Timeout duration
|
|
* @retval HAL status
|
|
*/
|
|
static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status,
|
|
uint32_t Tickstart, uint32_t Timeout)
|
|
{
|
|
/* Wait until flag is set */
|
|
while ((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status)
|
|
{
|
|
/* Check for the Timeout */
|
|
if (Timeout != HAL_MAX_DELAY)
|
|
{
|
|
if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
|
|
{
|
|
|
|
return HAL_TIMEOUT;
|
|
}
|
|
|
|
if ((READ_BIT(huart->Instance->CR1, USART_CR1_RE) != 0U) && (Flag != UART_FLAG_TXE) && (Flag != UART_FLAG_TC))
|
|
{
|
|
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) == SET)
|
|
{
|
|
/* Clear Overrun Error flag*/
|
|
__HAL_UART_CLEAR_OREFLAG(huart);
|
|
|
|
/* Blocking error : transfer is aborted
|
|
Set the UART state ready to be able to start again the process,
|
|
Disable Rx Interrupts if ongoing */
|
|
UART_EndRxTransfer(huart);
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_ORE;
|
|
|
|
/* Process Unlocked */
|
|
__HAL_UNLOCK(huart);
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Start Receive operation in interrupt mode.
|
|
* @note This function could be called by all HAL UART API providing reception in Interrupt mode.
|
|
* @note When calling this function, parameters validity is considered as already checked,
|
|
* i.e. Rx State, buffer address, ...
|
|
* UART Handle is assumed as Locked.
|
|
* @param huart UART handle.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef UART_Start_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
|
{
|
|
huart->pRxBuffPtr = pData;
|
|
huart->RxXferSize = Size;
|
|
huart->RxXferCount = Size;
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->RxState = HAL_UART_STATE_BUSY_RX;
|
|
|
|
if (huart->Init.Parity != UART_PARITY_NONE)
|
|
{
|
|
/* Enable the UART Parity Error Interrupt */
|
|
__HAL_UART_ENABLE_IT(huart, UART_IT_PE);
|
|
}
|
|
|
|
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
__HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
|
|
|
|
/* Enable the UART Data Register not empty Interrupt */
|
|
__HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Start Receive operation in DMA mode.
|
|
* @note This function could be called by all HAL UART API providing reception in DMA mode.
|
|
* @note When calling this function, parameters validity is considered as already checked,
|
|
* i.e. Rx State, buffer address, ...
|
|
* UART Handle is assumed as Locked.
|
|
* @param huart UART handle.
|
|
* @param pData Pointer to data buffer (u8 or u16 data elements).
|
|
* @param Size Amount of data elements (u8 or u16) to be received.
|
|
* @retval HAL status
|
|
*/
|
|
HAL_StatusTypeDef UART_Start_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
|
{
|
|
uint32_t *tmp;
|
|
|
|
huart->pRxBuffPtr = pData;
|
|
huart->RxXferSize = Size;
|
|
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
huart->RxState = HAL_UART_STATE_BUSY_RX;
|
|
|
|
/* Set the UART DMA transfer complete callback */
|
|
huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
|
|
|
|
/* Set the UART DMA Half transfer complete callback */
|
|
huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
|
|
|
|
/* Set the DMA error callback */
|
|
huart->hdmarx->XferErrorCallback = UART_DMAError;
|
|
|
|
/* Set the DMA abort callback */
|
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
|
|
/* Enable the DMA stream */
|
|
tmp = (uint32_t *)&pData;
|
|
if (HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->DR, *(uint32_t *)tmp, Size) != HAL_OK)
|
|
{
|
|
/* Set error code to DMA */
|
|
huart->ErrorCode = HAL_UART_ERROR_DMA;
|
|
|
|
/* Restore huart->RxState to ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
return HAL_ERROR;
|
|
}
|
|
/* Clear the Overrun flag just before enabling the DMA Rx request: can be mandatory for the second transfer */
|
|
__HAL_UART_CLEAR_OREFLAG(huart);
|
|
|
|
if (huart->Init.Parity != UART_PARITY_NONE)
|
|
{
|
|
/* Enable the UART Parity Error Interrupt */
|
|
ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
|
|
}
|
|
|
|
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
|
in the UART CR3 register */
|
|
ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief End ongoing Tx transfer on UART peripheral (following error detection or Transmit completion).
|
|
* @param huart UART handle.
|
|
* @retval None
|
|
*/
|
|
static void UART_EndTxTransfer(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable TXEIE and TCIE interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
|
|
|
|
/* At end of Tx process, restore huart->gState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
}
|
|
|
|
/**
|
|
* @brief End ongoing Rx transfer on UART peripheral (following error detection or Reception completion).
|
|
* @param huart UART handle.
|
|
* @retval None
|
|
*/
|
|
static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
|
|
|
|
/* In case of reception waiting for IDLE event, disable also the IDLE IE interrupt source */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
|
|
}
|
|
|
|
/* At end of Rx process, restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART communication abort callback, when initiated by HAL services on Error
|
|
* (To be called at end of DMA Abort procedure following error occurrence).
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered error callback*/
|
|
huart->ErrorCallback(huart);
|
|
#else
|
|
/*Call legacy weak error callback*/
|
|
HAL_UART_ErrorCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART Tx communication abort callback, when initiated by user
|
|
* (To be called at end of DMA Tx Abort procedure following user abort request).
|
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
|
* Abort still ongoing for Rx DMA Handle.
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
huart->hdmatx->XferAbortCallback = NULL;
|
|
|
|
/* Check if an Abort process is still ongoing */
|
|
if (huart->hdmarx != NULL)
|
|
{
|
|
if (huart->hdmarx->XferAbortCallback != NULL)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
|
huart->TxXferCount = 0x00U;
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Reset ErrorCode */
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
|
|
/* Restore huart->gState and huart->RxState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* Call user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort complete callback */
|
|
huart->AbortCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort complete callback */
|
|
HAL_UART_AbortCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART Rx communication abort callback, when initiated by user
|
|
* (To be called at end of DMA Rx Abort procedure following user abort request).
|
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
|
* Abort still ongoing for Tx DMA Handle.
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
huart->hdmarx->XferAbortCallback = NULL;
|
|
|
|
/* Check if an Abort process is still ongoing */
|
|
if (huart->hdmatx != NULL)
|
|
{
|
|
if (huart->hdmatx->XferAbortCallback != NULL)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
|
huart->TxXferCount = 0x00U;
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Reset ErrorCode */
|
|
huart->ErrorCode = HAL_UART_ERROR_NONE;
|
|
|
|
/* Restore huart->gState and huart->RxState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* Call user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort complete callback */
|
|
huart->AbortCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort complete callback */
|
|
HAL_UART_AbortCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART Tx communication abort callback, when initiated by user by a call to
|
|
* HAL_UART_AbortTransmit_IT API (Abort only Tx transfer)
|
|
* (This callback is executed at end of DMA Tx Abort procedure following user abort request,
|
|
* and leads to user Tx Abort Complete callback execution).
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
huart->TxXferCount = 0x00U;
|
|
|
|
/* Restore huart->gState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
/* Call user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Transmit Complete Callback */
|
|
huart->AbortTransmitCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort Transmit Complete Callback */
|
|
HAL_UART_AbortTransmitCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief DMA UART Rx communication abort callback, when initiated by user by a call to
|
|
* HAL_UART_AbortReceive_IT API (Abort only Rx transfer)
|
|
* (This callback is executed at end of DMA Rx Abort procedure following user abort request,
|
|
* and leads to user Rx Abort Complete callback execution).
|
|
* @param hdma Pointer to a DMA_HandleTypeDef structure that contains
|
|
* the configuration information for the specified DMA module.
|
|
* @retval None
|
|
*/
|
|
static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
|
|
{
|
|
UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
|
|
|
|
huart->RxXferCount = 0x00U;
|
|
|
|
/* Restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* Call user Abort complete callback */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/* Call registered Abort Receive Complete Callback */
|
|
huart->AbortReceiveCpltCallback(huart);
|
|
#else
|
|
/* Call legacy weak Abort Receive Complete Callback */
|
|
HAL_UART_AbortReceiveCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
/**
|
|
* @brief Sends an amount of data in non blocking mode.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
|
|
{
|
|
const uint16_t *tmp;
|
|
|
|
/* Check that a Tx process is ongoing */
|
|
if (huart->gState == HAL_UART_STATE_BUSY_TX)
|
|
{
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
|
{
|
|
tmp = (const uint16_t *) huart->pTxBuffPtr;
|
|
huart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
|
|
huart->pTxBuffPtr += 2U;
|
|
}
|
|
else
|
|
{
|
|
huart->Instance->DR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF);
|
|
}
|
|
|
|
if (--huart->TxXferCount == 0U)
|
|
{
|
|
/* Disable the UART Transmit Data Register Empty Interrupt */
|
|
__HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
|
|
|
|
/* Enable the UART Transmit Complete Interrupt */
|
|
__HAL_UART_ENABLE_IT(huart, UART_IT_TC);
|
|
}
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Wraps up transmission in non blocking mode.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
|
|
{
|
|
/* Disable the UART Transmit Complete Interrupt */
|
|
__HAL_UART_DISABLE_IT(huart, UART_IT_TC);
|
|
|
|
/* Tx process is ended, restore huart->gState to Ready */
|
|
huart->gState = HAL_UART_STATE_READY;
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Tx complete callback*/
|
|
huart->TxCpltCallback(huart);
|
|
#else
|
|
/*Call legacy weak Tx complete callback*/
|
|
HAL_UART_TxCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Receives an amount of data in non blocking mode
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval HAL status
|
|
*/
|
|
static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
|
|
{
|
|
uint8_t *pdata8bits = NULL;
|
|
uint16_t *pdata16bits = NULL;
|
|
|
|
/* Check that a Rx process is ongoing */
|
|
if (huart->RxState == HAL_UART_STATE_BUSY_RX)
|
|
{
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
|
|
{
|
|
/* Unused pdata8bits */
|
|
UNUSED(pdata8bits);
|
|
pdata16bits = (uint16_t *) huart->pRxBuffPtr;
|
|
*pdata16bits = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
|
|
huart->pRxBuffPtr += 2U;
|
|
}
|
|
else
|
|
{
|
|
pdata8bits = (uint8_t *) huart->pRxBuffPtr;
|
|
/* Unused pdata16bits */
|
|
UNUSED(pdata16bits);
|
|
|
|
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
|
|
{
|
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
|
|
}
|
|
else
|
|
{
|
|
*pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
|
|
}
|
|
huart->pRxBuffPtr += 1U;
|
|
}
|
|
|
|
if (--huart->RxXferCount == 0U)
|
|
{
|
|
/* Disable the UART Data Register not empty Interrupt */
|
|
__HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
|
|
|
|
/* Disable the UART Parity Error Interrupt */
|
|
__HAL_UART_DISABLE_IT(huart, UART_IT_PE);
|
|
|
|
/* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
|
__HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
|
|
|
|
/* Rx process is completed, restore huart->RxState to Ready */
|
|
huart->RxState = HAL_UART_STATE_READY;
|
|
|
|
/* Initialize type of RxEvent to Transfer Complete */
|
|
huart->RxEventType = HAL_UART_RXEVENT_TC;
|
|
|
|
/* Check current reception Mode :
|
|
If Reception till IDLE event has been selected : */
|
|
if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
|
|
{
|
|
/* Set reception type to Standard */
|
|
huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
|
|
|
|
/* Disable IDLE interrupt */
|
|
ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
|
|
|
|
/* Check if IDLE flag is set */
|
|
if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE))
|
|
{
|
|
/* Clear IDLE flag in ISR */
|
|
__HAL_UART_CLEAR_IDLEFLAG(huart);
|
|
}
|
|
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx Event callback*/
|
|
huart->RxEventCallback(huart, huart->RxXferSize);
|
|
#else
|
|
/*Call legacy weak Rx Event callback*/
|
|
HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
else
|
|
{
|
|
/* Standard reception API called */
|
|
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
|
|
/*Call registered Rx complete callback*/
|
|
huart->RxCpltCallback(huart);
|
|
#else
|
|
/*Call legacy weak Rx complete callback*/
|
|
HAL_UART_RxCpltCallback(huart);
|
|
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
return HAL_BUSY;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Configures the UART peripheral.
|
|
* @param huart Pointer to a UART_HandleTypeDef structure that contains
|
|
* the configuration information for the specified UART module.
|
|
* @retval None
|
|
*/
|
|
static void UART_SetConfig(UART_HandleTypeDef *huart)
|
|
{
|
|
uint32_t tmpreg;
|
|
uint32_t pclk;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
|
|
assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
|
|
assert_param(IS_UART_PARITY(huart->Init.Parity));
|
|
assert_param(IS_UART_MODE(huart->Init.Mode));
|
|
|
|
/*-------------------------- USART CR2 Configuration -----------------------*/
|
|
/* Configure the UART Stop Bits: Set STOP[13:12] bits
|
|
according to huart->Init.StopBits value */
|
|
MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
|
|
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
|
/* Configure the UART Word Length, Parity and mode:
|
|
Set the M bits according to huart->Init.WordLength value
|
|
Set PCE and PS bits according to huart->Init.Parity value
|
|
Set TE and RE bits according to huart->Init.Mode value
|
|
Set OVER8 bit according to huart->Init.OverSampling value */
|
|
|
|
tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling;
|
|
MODIFY_REG(huart->Instance->CR1,
|
|
(uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8),
|
|
tmpreg);
|
|
|
|
/*-------------------------- USART CR3 Configuration -----------------------*/
|
|
/* Configure the UART HFC: Set CTSE and RTSE bits according to huart->Init.HwFlowCtl value */
|
|
MODIFY_REG(huart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE), huart->Init.HwFlowCtl);
|
|
|
|
|
|
#if defined(USART6) && defined(UART9) && defined(UART10)
|
|
if ((huart->Instance == USART1) || (huart->Instance == USART6) || (huart->Instance == UART9) || (huart->Instance == UART10))
|
|
{
|
|
pclk = HAL_RCC_GetPCLK2Freq();
|
|
}
|
|
#elif defined(USART6)
|
|
if ((huart->Instance == USART1) || (huart->Instance == USART6))
|
|
{
|
|
pclk = HAL_RCC_GetPCLK2Freq();
|
|
}
|
|
#else
|
|
if (huart->Instance == USART1)
|
|
{
|
|
pclk = HAL_RCC_GetPCLK2Freq();
|
|
}
|
|
#endif /* USART6 */
|
|
else
|
|
{
|
|
pclk = HAL_RCC_GetPCLK1Freq();
|
|
}
|
|
/*-------------------------- USART BRR Configuration ---------------------*/
|
|
if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
|
|
{
|
|
huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate);
|
|
}
|
|
else
|
|
{
|
|
huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* HAL_UART_MODULE_ENABLED */
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|