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2522 lines
87 KiB
2522 lines
87 KiB
7 years ago
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/**
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******************************************************************************
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* @file stm32f0xx_hal_usart.c
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* @author MCD Application Team
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* @brief USART HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of the Universal Synchronous Asynchronous Receiver Transmitter
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* Peripheral (USART).
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* + Initialization and de-initialization functions
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* + IO operation functions
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* + Peripheral Control functions
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* + Peripheral State and Error functions
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*
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@verbatim
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===============================================================================
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##### How to use this driver #####
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===============================================================================
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[..]
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The USART HAL driver can be used as follows:
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(#) Declare a USART_HandleTypeDef handle structure (eg. USART_HandleTypeDef husart).
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(#) Initialize the USART low level resources by implementing the HAL_USART_MspInit() API:
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(++) Enable the USARTx interface clock.
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(++) USART pins configuration:
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(+++) Enable the clock for the USART GPIOs.
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(+++) Configure these USART pins as alternate function pull-up.
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(++) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(),
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HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
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(+++) Configure the USARTx interrupt priority.
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(+++) Enable the NVIC USART IRQ handle.
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(++) USART interrupts handling:
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-@@- The specific USART interrupts (Transmission complete interrupt,
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RXNE interrupt and Error Interrupts) will be managed using the macros
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__HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process.
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(++) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA()
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HAL_USART_Receive_DMA() and HAL_USART_TransmitReceive_DMA() APIs):
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(+++) Declare a DMA handle structure for the Tx/Rx channel.
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(+++) Enable the DMAx interface clock.
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(+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
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(+++) Configure the DMA Tx/Rx channel.
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(+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle.
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(+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
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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 husart handle Init structure.
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(#) Initialize the USART registers by calling the HAL_USART_Init() API:
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(++) This API configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
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by calling the customized HAL_USART_MspInit(&husart) API.
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(#) 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_USART_Transmit()
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(+) Receive an amount of data in blocking mode using HAL_USART_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_USART_Transmit_IT()
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(+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback
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(+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_TxCpltCallback
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(+) Receive an amount of data in non blocking mode using HAL_USART_Receive_IT()
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(+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback
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(+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_RxCpltCallback
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(+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can
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add his own code by customization of function pointer HAL_USART_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_USART_Transmit_DMA()
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(+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback
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(+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_TxCpltCallback
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(+) Receive an amount of data in non blocking mode (DMA) using HAL_USART_Receive_DMA()
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(+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback
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(+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can
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add his own code by customization of function pointer HAL_USART_RxCpltCallback
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(+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can
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add his own code by customization of function pointer HAL_USART_ErrorCallback
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(+) Pause the DMA Transfer using HAL_USART_DMAPause()
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(+) Resume the DMA Transfer using HAL_USART_DMAResume()
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(+) Stop the DMA Transfer using HAL_USART_DMAStop()
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*** USART HAL driver macros list ***
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=============================================
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[..]
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Below the list of most used macros in USART HAL driver.
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(+) __HAL_USART_ENABLE: Enable the USART peripheral
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(+) __HAL_USART_DISABLE: Disable the USART peripheral
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(+) __HAL_USART_GET_FLAG : Check whether the specified USART flag is set or not
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(+) __HAL_USART_CLEAR_FLAG : Clear the specified USART pending flag
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(+) __HAL_USART_ENABLE_IT: Enable the specified USART interrupt
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(+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt
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[..]
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(@) You can refer to the USART HAL driver header file for more useful macros
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[..]
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(@) To configure and enable/disable the USART to wake up the MCU from stop mode, resort to UART API's
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HAL_UARTEx_StopModeWakeUpSourceConfig(), HAL_UARTEx_EnableStopMode() and
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HAL_UARTEx_DisableStopMode() in casting the USART handle to UART type UART_HandleTypeDef.
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@endverbatim
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f0xx_hal.h"
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/** @addtogroup STM32F0xx_HAL_Driver
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* @{
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*/
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/** @defgroup USART USART
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* @brief HAL USART Synchronous module driver
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* @{
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*/
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#ifdef HAL_USART_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/** @defgroup USART_Private_Constants USART Private Constants
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* @{
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*/
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#define USART_DUMMY_DATA ((uint16_t) 0xFFFFU) /*!< USART transmitted dummy data */
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#define USART_TEACK_REACK_TIMEOUT ( 1000U) /*!< USART TX or RX enable acknowledge time-out value */
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#define USART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \
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USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8)) /*!< USART CR1 fields of parameters set by USART_SetConfig API */
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#define USART_CR2_FIELDS ((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | \
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USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP)) /*!< USART CR2 fields of parameters set by USART_SetConfig API */
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/**
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* @}
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*/
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/* Private macros ------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/** @addtogroup USART_Private_Functions
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* @{
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*/
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static void USART_EndTransfer(USART_HandleTypeDef *husart);
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static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
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static void USART_DMAError(DMA_HandleTypeDef *hdma);
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static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
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static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
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static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
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static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout);
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static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart);
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static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart);
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static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart);
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static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart);
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static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart);
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static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart);
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/**
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* @}
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*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup USART_Exported_Functions USART Exported Functions
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* @{
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*/
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/** @defgroup USART_Exported_Functions_Group1 Initialization and de-initialization functions
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* @brief Initialization and Configuration functions
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*
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@verbatim
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===============================================================================
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##### Initialization and Configuration functions #####
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===============================================================================
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[..]
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This subsection provides a set of functions allowing to initialize the USART
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in asynchronous and in synchronous modes.
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(+) For the asynchronous mode only these parameters can be configured:
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(++) Baud Rate
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(++) Word Length
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(++) Stop Bit
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(++) Parity
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(++) USART polarity
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(++) USART phase
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(++) USART LastBit
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(++) Receiver/transmitter modes
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[..]
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The HAL_USART_Init() function follows the USART synchronous configuration
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procedure (details for the procedure are available in reference manual).
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@endverbatim
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* @{
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*/
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/*
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Additional Table: 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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According to device capability (support or not of 7-bit word length),
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frame length is either defined by the M bit (8-bits or 9-bits)
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or by the M1 and M0 bits (7-bit, 8-bit or 9-bit).
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Possible USART frame formats are as listed in the following table:
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Table 1. USART frame format.
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+-----------------------------------------------------------------------+
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| M bit | PCE bit | USART 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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| M1 bit | M0 bit | PCE bit | USART frame |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 0 | 0 | | SB | 8 bit data | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 1 | 0 | | SB | 9 bit data | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 1 | 0 | 0 | | SB | 7 bit data | STB | |
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|---------|---------|-----------|---------------------------------------|
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| 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
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+-----------------------------------------------------------------------+
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*/
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/**
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* @brief Initialize the USART mode according to the specified
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* parameters in the USART_InitTypeDef and initialize the associated handle.
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* @param husart USART handle.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart)
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{
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/* Check the USART handle allocation */
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if(husart == NULL)
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{
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return HAL_ERROR;
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}
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/* Check the parameters */
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assert_param(IS_USART_INSTANCE(husart->Instance));
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if(husart->State == HAL_USART_STATE_RESET)
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{
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/* Allocate lock resource and initialize it */
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husart->Lock = HAL_UNLOCKED;
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/* Init the low level hardware : GPIO, CLOCK */
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HAL_USART_MspInit(husart);
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}
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husart->State = HAL_USART_STATE_BUSY;
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/* Disable the Peripheral */
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__HAL_USART_DISABLE(husart);
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/* Set the Usart Communication parameters */
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if (USART_SetConfig(husart) == HAL_ERROR)
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{
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return HAL_ERROR;
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}
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/* In Synchronous mode, the following bits must be kept cleared:
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- LINEN bit (if LIN is supported) in the USART_CR2 register
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- SCEN (if Smartcard is supported), HDSEL and IREN (if IrDA is supported) bits in the USART_CR3 register. */
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#if defined (USART_CR2_LINEN)
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husart->Instance->CR2 &= ~USART_CR2_LINEN;
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#endif
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#if defined (USART_CR3_SCEN)
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#if defined (USART_CR3_IREN)
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husart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
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#else
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husart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL);
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#endif
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#else
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#if defined (USART_CR3_IREN)
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husart->Instance->CR3 &= ~(USART_CR3_HDSEL | USART_CR3_IREN);
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#else
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husart->Instance->CR3 &= ~(USART_CR3_HDSEL);
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#endif
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#endif
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/* Enable the Peripheral */
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|
|
__HAL_USART_ENABLE(husart);
|
||
|
|
|
||
|
|
/* TEACK and/or REACK to check before moving husart->State to Ready */
|
||
|
|
return (USART_CheckIdleState(husart));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DeInitialize the USART peripheral.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Check the USART handle allocation */
|
||
|
|
if(husart == NULL)
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check the parameters */
|
||
|
|
assert_param(IS_USART_INSTANCE(husart->Instance));
|
||
|
|
|
||
|
|
husart->State = HAL_USART_STATE_BUSY;
|
||
|
|
|
||
|
|
husart->Instance->CR1 = 0x0U;
|
||
|
|
husart->Instance->CR2 = 0x0U;
|
||
|
|
husart->Instance->CR3 = 0x0U;
|
||
|
|
|
||
|
|
/* DeInit the low level hardware */
|
||
|
|
HAL_USART_MspDeInit(husart);
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_RESET;
|
||
|
|
|
||
|
|
/* Process Unlock */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Initialize the USART MSP.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_MspInit(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_MspInit can be implemented in the user file
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DeInitialize the USART MSP.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_MspDeInit can be implemented in the user file
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @defgroup USART_Exported_Functions_Group2 IO operation functions
|
||
|
|
* @brief USART Transmit and Receive functions
|
||
|
|
*
|
||
|
|
@verbatim
|
||
|
|
===============================================================================
|
||
|
|
##### IO operation functions #####
|
||
|
|
===============================================================================
|
||
|
|
[..] This subsection provides a set of functions allowing to manage the USART synchronous
|
||
|
|
data transfers.
|
||
|
|
|
||
|
|
[..] The USART supports master mode only: it cannot receive or send data related to an input
|
||
|
|
clock (SCLK is always an output).
|
||
|
|
|
||
|
|
(#) There are two modes of transfer:
|
||
|
|
(++) Blocking mode: The communication is performed in polling mode.
|
||
|
|
The HAL status of all data processing is returned by the same function
|
||
|
|
after finishing transfer.
|
||
|
|
(++) No-Blocking mode: The communication is performed using Interrupts
|
||
|
|
or DMA, These APIs return the HAL status.
|
||
|
|
The end of the data processing will be indicated through the
|
||
|
|
dedicated USART IRQ when using Interrupt mode or the DMA IRQ when
|
||
|
|
using DMA mode.
|
||
|
|
The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() user callbacks
|
||
|
|
will be executed respectively at the end of the transmit or Receive process
|
||
|
|
The HAL_USART_ErrorCallback()user callback will be executed when a communication error is detected
|
||
|
|
|
||
|
|
(#) Blocking mode APIs are :
|
||
|
|
(++) HAL_USART_Transmit()in simplex mode
|
||
|
|
(++) HAL_USART_Receive() in full duplex receive only
|
||
|
|
(++) HAL_USART_TransmitReceive() in full duplex mode
|
||
|
|
|
||
|
|
(#) No-Blocking mode APIs with Interrupt are :
|
||
|
|
(++) HAL_USART_Transmit_IT()in simplex mode
|
||
|
|
(++) HAL_USART_Receive_IT() in full duplex receive only
|
||
|
|
(++) HAL_USART_TransmitReceive_IT()in full duplex mode
|
||
|
|
(++) HAL_USART_IRQHandler()
|
||
|
|
|
||
|
|
(#) No-Blocking mode APIs with DMA are :
|
||
|
|
(++) HAL_USART_Transmit_DMA()in simplex mode
|
||
|
|
(++) HAL_USART_Receive_DMA() in full duplex receive only
|
||
|
|
(++) HAL_USART_TransmitReceive_DMA() in full duplex mode
|
||
|
|
(++) HAL_USART_DMAPause()
|
||
|
|
(++) HAL_USART_DMAResume()
|
||
|
|
(++) HAL_USART_DMAStop()
|
||
|
|
|
||
|
|
(#) A set of Transfer Complete Callbacks are provided in Non-Blocking mode:
|
||
|
|
(++) HAL_USART_TxCpltCallback()
|
||
|
|
(++) HAL_USART_RxCpltCallback()
|
||
|
|
(++) HAL_USART_TxHalfCpltCallback()
|
||
|
|
(++) HAL_USART_RxHalfCpltCallback()
|
||
|
|
(++) HAL_USART_ErrorCallback()
|
||
|
|
(++) HAL_USART_TxRxCpltCallback()
|
||
|
|
|
||
|
|
(#) Non-Blocking mode transfers could be aborted using Abort API's :
|
||
|
|
(++) HAL_USART_Abort()
|
||
|
|
(++) HAL_USART_Abort_IT()
|
||
|
|
|
||
|
|
(#) For Abort services based on interrupts (HAL_USART_Abort_IT), a Abort Complete Callbacks is provided:
|
||
|
|
(++) HAL_USART_AbortCpltCallback()
|
||
|
|
|
||
|
|
(#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
|
||
|
|
Errors are handled as follows :
|
||
|
|
(++) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
|
||
|
|
to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
|
||
|
|
Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
|
||
|
|
and HAL_USART_ErrorCallback() user callback is executed. Transfer is kept ongoing on USART side.
|
||
|
|
If user wants to abort it, Abort services should be called by user.
|
||
|
|
(++) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
|
||
|
|
This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
|
||
|
|
Error code is set to allow user to identify error type, and HAL_USART_ErrorCallback() user callback is executed.
|
||
|
|
|
||
|
|
@endverbatim
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Simplex send an amount of data in blocking mode.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pTxData Pointer to data buffer.
|
||
|
|
* @param Size Amount of data to be sent.
|
||
|
|
* @param Timeout Timeout duration.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pTxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout)
|
||
|
|
{
|
||
|
|
uint16_t* tmp=0U;
|
||
|
|
uint32_t tickstart = 0U;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pTxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pTxData buffer provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data to be filled into TDR will be
|
||
|
|
handled through a u16 cast. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if((((uint32_t)pTxData)&1U) != 0U)
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_TX;
|
||
|
|
|
||
|
|
/* Init tickstart for timeout managment*/
|
||
|
|
tickstart = HAL_GetTick();
|
||
|
|
|
||
|
|
husart->TxXferSize = Size;
|
||
|
|
husart->TxXferCount = Size;
|
||
|
|
|
||
|
|
/* Check the remaining data to be sent */
|
||
|
|
while(husart->TxXferCount > 0)
|
||
|
|
{
|
||
|
|
husart->TxXferCount--;
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
|
||
|
|
{
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) pTxData;
|
||
|
|
husart->Instance->TDR = (*tmp & (uint16_t)0x01FFU);
|
||
|
|
pTxData += 2U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
husart->Instance->TDR = (*pTxData++ & (uint8_t)0xFFU);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
|
||
|
|
{
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* At end of Tx process, restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Receive an amount of data in blocking mode.
|
||
|
|
* @note To receive synchronous data, dummy data are simultaneously transmitted.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pRxData Pointer to data buffer.
|
||
|
|
* @param Size Amount of data to be received.
|
||
|
|
* @param Timeout Timeout duration.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as received data will be handled using u16 pointer cast). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pRxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
|
||
|
|
{
|
||
|
|
uint16_t* tmp=0U;
|
||
|
|
uint16_t uhMask;
|
||
|
|
uint32_t tickstart = 0U;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pRxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pRxData buffer provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data to be received from RDR will be
|
||
|
|
handled through a u16 cast. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if((((uint32_t)pRxData)&1U) != 0U)
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
||
|
|
|
||
|
|
/* Init tickstart for timeout managment*/
|
||
|
|
tickstart = HAL_GetTick();
|
||
|
|
|
||
|
|
husart->RxXferSize = Size;
|
||
|
|
husart->RxXferCount = Size;
|
||
|
|
|
||
|
|
/* Computation of USART mask to apply to RDR register */
|
||
|
|
USART_MASK_COMPUTATION(husart);
|
||
|
|
uhMask = husart->Mask;
|
||
|
|
|
||
|
|
/* as long as data have to be received */
|
||
|
|
while(husart->RxXferCount > 0U)
|
||
|
|
{
|
||
|
|
husart->RxXferCount--;
|
||
|
|
|
||
|
|
/* Wait until TC flag is set to send dummy byte in order to generate the
|
||
|
|
* clock for the slave to send data.
|
||
|
|
* Whatever the frame length (7, 8 or 9-bit long), the same dummy value
|
||
|
|
* can be written for all the cases. */
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
|
||
|
|
{
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x0FFU);
|
||
|
|
|
||
|
|
/* Wait for RXNE Flag */
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
|
||
|
|
{
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) pRxData ;
|
||
|
|
*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
|
||
|
|
pRxData +=2;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
*pRxData++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* At end of Rx process, restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Full-Duplex Send and Receive an amount of data in blocking mode.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pTxData pointer to TX data buffer.
|
||
|
|
* @param pRxData pointer to RX data buffer.
|
||
|
|
* @param Size amount of data to be sent (same amount to be received).
|
||
|
|
* @param Timeout Timeout duration.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffers containing data to be sent/received, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as sent/received data will be handled using u16 pointer cast). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pTxData and pRxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
|
||
|
|
{
|
||
|
|
uint16_t* tmp=0U;
|
||
|
|
uint16_t uhMask;
|
||
|
|
uint32_t tickstart = 0U;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pTxData and pRxData buffers provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data to be filled into TDR/retrieved from RDR will be
|
||
|
|
handled through a u16 cast. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if(((((uint32_t)pTxData)&1U) != 0U) || ((((uint32_t)pRxData)&1U) != 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
||
|
|
|
||
|
|
/* Init tickstart for timeout managment*/
|
||
|
|
tickstart = HAL_GetTick();
|
||
|
|
|
||
|
|
husart->RxXferSize = Size;
|
||
|
|
husart->TxXferSize = Size;
|
||
|
|
husart->TxXferCount = Size;
|
||
|
|
husart->RxXferCount = Size;
|
||
|
|
|
||
|
|
/* Computation of USART mask to apply to RDR register */
|
||
|
|
USART_MASK_COMPUTATION(husart);
|
||
|
|
uhMask = husart->Mask;
|
||
|
|
|
||
|
|
/* Check the remain data to be sent */
|
||
|
|
while(husart->TxXferCount > 0U)
|
||
|
|
{
|
||
|
|
husart->TxXferCount--;
|
||
|
|
husart->RxXferCount--;
|
||
|
|
|
||
|
|
/* Wait until TC flag is set to send data */
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
|
||
|
|
{
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) pTxData;
|
||
|
|
husart->Instance->TDR = (*tmp & uhMask);
|
||
|
|
pTxData += 2U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
husart->Instance->TDR = (*pTxData++ & (uint8_t)uhMask);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Wait for RXNE Flag */
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
|
||
|
|
{
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) pRxData ;
|
||
|
|
*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
|
||
|
|
pRxData +=2U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
*pRxData++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* At end of TxRx process, restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Send an amount of data in interrupt mode.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pTxData pointer to data buffer.
|
||
|
|
* @param Size amount of data to be sent.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pTxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
|
||
|
|
{
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pTxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pTxData buffer provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data to be filled into TDR will be
|
||
|
|
handled through a u16 cast. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if((((uint32_t)pTxData)&1U) != 0U)
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->pTxBuffPtr = pTxData;
|
||
|
|
husart->TxXferSize = Size;
|
||
|
|
husart->TxXferCount = Size;
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_TX;
|
||
|
|
|
||
|
|
/* The USART Error Interrupts: (Frame error, noise error, overrun error)
|
||
|
|
are not managed by the USART Transmit Process to avoid the overrun interrupt
|
||
|
|
when the usart mode is configured for transmit and receive "USART_MODE_TX_RX"
|
||
|
|
to benefit for the frame error and noise interrupts the usart mode should be
|
||
|
|
configured only for transmit "USART_MODE_TX" */
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
/* Enable the USART Transmit Data Register Empty Interrupt */
|
||
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Receive an amount of data in interrupt mode.
|
||
|
|
* @note To receive synchronous data, dummy data are simultaneously transmitted.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pRxData pointer to data buffer.
|
||
|
|
* @param Size amount of data to be received.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as received data will be handled using u16 pointer cast). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pRxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
|
||
|
|
{
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pRxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pRxData buffer provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data to be received from RDR will be
|
||
|
|
handled through a u16 cast. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if((((uint32_t)pRxData)&1U) != 0U)
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->pRxBuffPtr = pRxData;
|
||
|
|
husart->RxXferSize = Size;
|
||
|
|
husart->RxXferCount = Size;
|
||
|
|
|
||
|
|
USART_MASK_COMPUTATION(husart);
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
/* Enable the USART Parity Error and Data Register not empty Interrupts */
|
||
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
|
||
|
|
|
||
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Send dummy byte in order to generate the clock for the Slave to send the next data */
|
||
|
|
if(husart->Init.WordLength == USART_WORDLENGTH_9B)
|
||
|
|
{
|
||
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x01FFU);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FFU);
|
||
|
|
}
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Full-Duplex Send and Receive an amount of data in interrupt mode.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pTxData pointer to TX data buffer.
|
||
|
|
* @param pRxData pointer to RX data buffer.
|
||
|
|
* @param Size amount of data to be sent (same amount to be received).
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffers containing data to be sent/received, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as sent/received data will be handled using u16 pointer cast). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pTxData and pRxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
|
||
|
|
{
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pTxData and pRxData buffers provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data to be filled into TDR/retrieved from RDR will be
|
||
|
|
handled through a u16 cast. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if(((((uint32_t)pTxData)&1U) != 0U) || ((((uint32_t)pRxData)&1U) != 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->pRxBuffPtr = pRxData;
|
||
|
|
husart->RxXferSize = Size;
|
||
|
|
husart->RxXferCount = Size;
|
||
|
|
husart->pTxBuffPtr = pTxData;
|
||
|
|
husart->TxXferSize = Size;
|
||
|
|
husart->TxXferCount = Size;
|
||
|
|
|
||
|
|
/* Computation of USART mask to apply to RDR register */
|
||
|
|
USART_MASK_COMPUTATION(husart);
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_TX_RX;
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Enable the USART Parity Error and USART Data Register not empty Interrupts */
|
||
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
|
||
|
|
|
||
|
|
/* Enable the USART Transmit Data Register Empty Interrupt */
|
||
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Send an amount of data in DMA mode.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pTxData pointer to data buffer.
|
||
|
|
* @param Size amount of data to be sent.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as sent data will be handled by DMA from halfword frontier). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pTxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
|
||
|
|
{
|
||
|
|
uint32_t *tmp=0U;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pTxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pTxData buffer provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data copy into TDR will be
|
||
|
|
handled by DMA from a u16 frontier. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if((((uint32_t)pTxData)&1U) != 0U)
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->pTxBuffPtr = pTxData;
|
||
|
|
husart->TxXferSize = Size;
|
||
|
|
husart->TxXferCount = Size;
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_TX;
|
||
|
|
|
||
|
|
/* Set the USART DMA transfer complete callback */
|
||
|
|
husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
|
||
|
|
|
||
|
|
/* Set the USART DMA Half transfer complete callback */
|
||
|
|
husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
|
||
|
|
|
||
|
|
/* Set the DMA error callback */
|
||
|
|
husart->hdmatx->XferErrorCallback = USART_DMAError;
|
||
|
|
|
||
|
|
/* Enable the USART transmit DMA channel */
|
||
|
|
tmp = (uint32_t*)&pTxData;
|
||
|
|
HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->TDR, Size);
|
||
|
|
|
||
|
|
/* Clear the TC flag in the ICR register */
|
||
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF);
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
||
|
|
in the USART CR3 register */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Receive an amount of data in DMA mode.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pRxData pointer to data buffer.
|
||
|
|
* @param Size amount of data to be received.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as received data will be handled by DMA from halfword frontier). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pRxData.
|
||
|
|
* @note The USART DMA transmit channel must be configured in order to generate the clock for the slave.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
|
||
|
|
{
|
||
|
|
uint32_t *tmp;
|
||
|
|
|
||
|
|
/* Check that a Rx process is not already ongoing */
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pRxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pRxData buffer provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data copy from RDR will be
|
||
|
|
handled by DMA from a u16 frontier. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if((((uint32_t)pRxData)&1U) != 0U)
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->pRxBuffPtr = pRxData;
|
||
|
|
husart->RxXferSize = Size;
|
||
|
|
husart->pTxBuffPtr = pRxData;
|
||
|
|
husart->TxXferSize = Size;
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_RX;
|
||
|
|
|
||
|
|
/* Set the USART DMA Rx transfer complete callback */
|
||
|
|
husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
|
||
|
|
|
||
|
|
/* Set the USART DMA Half transfer complete callback */
|
||
|
|
husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
|
||
|
|
|
||
|
|
/* Set the USART DMA Rx transfer error callback */
|
||
|
|
husart->hdmarx->XferErrorCallback = USART_DMAError;
|
||
|
|
|
||
|
|
/* Enable the USART receive DMA channel */
|
||
|
|
tmp = (uint32_t*)&pRxData;
|
||
|
|
HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(uint32_t*)tmp, Size);
|
||
|
|
|
||
|
|
/* Enable the USART transmit DMA channel: the transmit channel is used in order
|
||
|
|
to generate in the non-blocking mode the clock to the slave device,
|
||
|
|
this mode isn't a simplex receive mode but a full-duplex receive mode */
|
||
|
|
/* Set the USART DMA Tx Complete and Error callback to Null */
|
||
|
|
husart->hdmatx->XferErrorCallback = NULL;
|
||
|
|
husart->hdmatx->XferHalfCpltCallback = NULL;
|
||
|
|
husart->hdmatx->XferCpltCallback = NULL;
|
||
|
|
HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->TDR, Size);
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
/* Enable the USART Parity Error Interrupt */
|
||
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
||
|
|
|
||
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
||
|
|
in the USART CR3 register */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
|
||
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
||
|
|
in the USART CR3 register */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Full-Duplex Transmit Receive an amount of data in non-blocking mode.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param pTxData pointer to TX data buffer.
|
||
|
|
* @param pRxData pointer to RX data buffer.
|
||
|
|
* @param Size amount of data to be received/sent.
|
||
|
|
* @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
|
||
|
|
* address of user data buffers containing data to be sent/received, should be aligned on a half word frontier (16 bits)
|
||
|
|
* (as sent/received data will be handled by DMA from halfword frontier). Depending on compilation chain,
|
||
|
|
* use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pTxData and pRxData.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
|
||
|
|
{
|
||
|
|
uint32_t *tmp;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_READY)
|
||
|
|
{
|
||
|
|
if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* In case of 9bits/No Parity transfer, pTxData and pRxData buffers provided as input paramter
|
||
|
|
should be aligned on a u16 frontier, as data copy to/from TDR/RDR will be
|
||
|
|
handled by DMA from a u16 frontier. */
|
||
|
|
if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
if(((((uint32_t)pTxData)&1U) != 0U) || ((((uint32_t)pRxData)&1U) != 0U))
|
||
|
|
{
|
||
|
|
return HAL_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
husart->pRxBuffPtr = pRxData;
|
||
|
|
husart->RxXferSize = Size;
|
||
|
|
husart->pTxBuffPtr = pTxData;
|
||
|
|
husart->TxXferSize = Size;
|
||
|
|
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
husart->State = HAL_USART_STATE_BUSY_TX_RX;
|
||
|
|
|
||
|
|
/* Set the USART DMA Rx transfer complete callback */
|
||
|
|
husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
|
||
|
|
|
||
|
|
/* Set the USART DMA Half transfer complete callback */
|
||
|
|
husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
|
||
|
|
|
||
|
|
/* Set the USART DMA Tx transfer complete callback */
|
||
|
|
husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
|
||
|
|
|
||
|
|
/* Set the USART DMA Half transfer complete callback */
|
||
|
|
husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
|
||
|
|
|
||
|
|
/* Set the USART DMA Tx transfer error callback */
|
||
|
|
husart->hdmatx->XferErrorCallback = USART_DMAError;
|
||
|
|
|
||
|
|
/* Set the USART DMA Rx transfer error callback */
|
||
|
|
husart->hdmarx->XferErrorCallback = USART_DMAError;
|
||
|
|
|
||
|
|
/* Enable the USART receive DMA channel */
|
||
|
|
tmp = (uint32_t*)&pRxData;
|
||
|
|
HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, *(uint32_t*)tmp, Size);
|
||
|
|
|
||
|
|
/* Enable the USART transmit DMA channel */
|
||
|
|
tmp = (uint32_t*)&pTxData;
|
||
|
|
HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->TDR, Size);
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
/* Enable the USART Parity Error Interrupt */
|
||
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
||
|
|
|
||
|
|
/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Clear the TC flag in the ICR register */
|
||
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_TCF);
|
||
|
|
|
||
|
|
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
||
|
|
in the USART CR3 register */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
|
||
|
|
/* Enable the DMA transfer for transmit request by setting the DMAT bit
|
||
|
|
in the USART CR3 register */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Pause the DMA Transfer.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
if( (husart->State == HAL_USART_STATE_BUSY_TX) &&
|
||
|
|
(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)))
|
||
|
|
{
|
||
|
|
/* Disable the USART DMA Tx request */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
}
|
||
|
|
else if( (husart->State == HAL_USART_STATE_BUSY_RX) ||
|
||
|
|
(husart->State == HAL_USART_STATE_BUSY_TX_RX) )
|
||
|
|
{
|
||
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
||
|
|
{
|
||
|
|
/* Disable the USART DMA Tx request */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
}
|
||
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
||
|
|
{
|
||
|
|
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Disable the USART DMA Rx request */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Resume the DMA Transfer.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Process Locked */
|
||
|
|
__HAL_LOCK(husart);
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_TX)
|
||
|
|
{
|
||
|
|
/* Enable the USART DMA Tx request */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
}
|
||
|
|
else if( (husart->State == HAL_USART_STATE_BUSY_RX) ||
|
||
|
|
(husart->State == HAL_USART_STATE_BUSY_TX_RX) )
|
||
|
|
{
|
||
|
|
/* Clear the Overrun flag before resuming the Rx transfer*/
|
||
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF);
|
||
|
|
|
||
|
|
/* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
||
|
|
SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Enable the USART DMA Rx request before the DMA Tx request */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
|
||
|
|
/* Enable the USART DMA Tx request */
|
||
|
|
SET_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Stop the DMA Transfer.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* The Lock is not implemented on this API to allow the user application
|
||
|
|
to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback() /
|
||
|
|
HAL_USART_TxHalfCpltCallback() / HAL_USART_RxHalfCpltCallback ():
|
||
|
|
indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete interrupt is
|
||
|
|
generated if the DMA transfer interruption occurs at the middle or at the end of the stream
|
||
|
|
and the corresponding call back is executed.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Disable the USART Tx/Rx DMA requests */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
|
||
|
|
/* Abort the USART DMA tx channel */
|
||
|
|
if(husart->hdmatx != NULL)
|
||
|
|
{
|
||
|
|
HAL_DMA_Abort(husart->hdmatx);
|
||
|
|
}
|
||
|
|
/* Abort the USART DMA rx channel */
|
||
|
|
if(husart->hdmarx != NULL)
|
||
|
|
{
|
||
|
|
HAL_DMA_Abort(husart->hdmarx);
|
||
|
|
}
|
||
|
|
|
||
|
|
USART_EndTransfer(husart);
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Abort ongoing transfers (blocking mode).
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
||
|
|
* This procedure performs following operations :
|
||
|
|
* - Disable USART Interrupts (Tx and Rx)
|
||
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
||
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
|
||
|
|
* - Set handle State to READY
|
||
|
|
* @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Abort(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Disable the USART DMA Tx request if enabled */
|
||
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
||
|
|
{
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
|
||
|
|
/* Abort the USART DMA Tx channel : use blocking DMA Abort API (no callback) */
|
||
|
|
if(husart->hdmatx != NULL)
|
||
|
|
{
|
||
|
|
/* Set the USART DMA Abort callback to Null.
|
||
|
|
No call back execution at end of DMA abort procedure */
|
||
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
||
|
|
|
||
|
|
HAL_DMA_Abort(husart->hdmatx);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Disable the USART DMA Rx request if enabled */
|
||
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
||
|
|
{
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
|
||
|
|
/* Abort the USART DMA Rx channel : use blocking DMA Abort API (no callback) */
|
||
|
|
if(husart->hdmarx != NULL)
|
||
|
|
{
|
||
|
|
/* Set the USART DMA Abort callback to Null.
|
||
|
|
No call back execution at end of DMA abort procedure */
|
||
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
||
|
|
|
||
|
|
HAL_DMA_Abort(husart->hdmarx);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Reset Tx and Rx transfer counters */
|
||
|
|
husart->TxXferCount = 0U;
|
||
|
|
husart->RxXferCount = 0U;
|
||
|
|
|
||
|
|
/* Clear the Error flags in the ICR register */
|
||
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
||
|
|
|
||
|
|
/* Restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Reset Handle ErrorCode to No Error */
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Abort ongoing transfers (Interrupt mode).
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
|
||
|
|
* This procedure performs following operations :
|
||
|
|
* - Disable USART Interrupts (Tx and Rx)
|
||
|
|
* - Disable the DMA transfer in the peripheral register (if enabled)
|
||
|
|
* - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
|
||
|
|
* - Set handle State to READY
|
||
|
|
* - At abort completion, call user abort complete callback
|
||
|
|
* @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
|
||
|
|
* considered as completed only when user abort complete callback is executed (not when exiting function).
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
HAL_StatusTypeDef HAL_USART_Abort_IT(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
uint32_t abortcplt = 1U;
|
||
|
|
|
||
|
|
/* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* If DMA Tx and/or DMA Rx Handles are associated to USART Handle, DMA Abort complete callbacks should be initialised
|
||
|
|
before any call to DMA Abort functions */
|
||
|
|
/* DMA Tx Handle is valid */
|
||
|
|
if(husart->hdmatx != NULL)
|
||
|
|
{
|
||
|
|
/* Set DMA Abort Complete callback if USART DMA Tx request if enabled.
|
||
|
|
Otherwise, set it to NULL */
|
||
|
|
if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
||
|
|
{
|
||
|
|
husart->hdmatx->XferAbortCallback = USART_DMATxAbortCallback;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* DMA Rx Handle is valid */
|
||
|
|
if(husart->hdmarx != NULL)
|
||
|
|
{
|
||
|
|
/* Set DMA Abort Complete callback if USART DMA Rx request if enabled.
|
||
|
|
Otherwise, set it to NULL */
|
||
|
|
if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
||
|
|
{
|
||
|
|
husart->hdmarx->XferAbortCallback = USART_DMARxAbortCallback;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Disable the USART DMA Tx request if enabled */
|
||
|
|
if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
|
||
|
|
{
|
||
|
|
/* Disable DMA Tx at USART level */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
|
||
|
|
/* Abort the USART DMA Tx channel : use non blocking DMA Abort API (callback) */
|
||
|
|
if(husart->hdmatx != NULL)
|
||
|
|
{
|
||
|
|
/* USART Tx DMA Abort callback has already been initialised :
|
||
|
|
will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */
|
||
|
|
|
||
|
|
/* Abort DMA TX */
|
||
|
|
if(HAL_DMA_Abort_IT(husart->hdmatx) != HAL_OK)
|
||
|
|
{
|
||
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
abortcplt = 0U;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Disable the USART DMA Rx request if enabled */
|
||
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
||
|
|
{
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
|
||
|
|
/* Abort the USART DMA Rx channel : use non blocking DMA Abort API (callback) */
|
||
|
|
if(husart->hdmarx != NULL)
|
||
|
|
{
|
||
|
|
/* USART Rx DMA Abort callback has already been initialised :
|
||
|
|
will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */
|
||
|
|
|
||
|
|
/* Abort DMA RX */
|
||
|
|
if(HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
|
||
|
|
{
|
||
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
||
|
|
abortcplt = 1U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
abortcplt = 0U;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* if no DMA abort complete callback execution is required => call user Abort Complete callback */
|
||
|
|
if (abortcplt == 1U)
|
||
|
|
{
|
||
|
|
/* Reset Tx and Rx transfer counters */
|
||
|
|
husart->TxXferCount = 0U;
|
||
|
|
husart->RxXferCount = 0U;
|
||
|
|
|
||
|
|
/* Reset errorCode */
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
|
||
|
|
/* Clear the Error flags in the ICR register */
|
||
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
||
|
|
|
||
|
|
/* Restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* As no DMA to be aborted, call directly user Abort complete callback */
|
||
|
|
HAL_USART_AbortCpltCallback(husart);
|
||
|
|
}
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Handle USART interrupt request.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_USART_IRQHandler(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
uint32_t isrflags = READ_REG(husart->Instance->ISR);
|
||
|
|
uint32_t cr1its = READ_REG(husart->Instance->CR1);
|
||
|
|
uint32_t cr3its;
|
||
|
|
uint32_t errorflags;
|
||
|
|
|
||
|
|
/* If no error occurs */
|
||
|
|
errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE));
|
||
|
|
if (errorflags == RESET)
|
||
|
|
{
|
||
|
|
/* USART in mode Receiver ---------------------------------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
|
||
|
|
{
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_RX)
|
||
|
|
{
|
||
|
|
USART_Receive_IT(husart);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
USART_TransmitReceive_IT(husart);
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* If some errors occur */
|
||
|
|
cr3its = READ_REG(husart->Instance->CR3);
|
||
|
|
if( (errorflags != RESET)
|
||
|
|
&& ( ((cr3its & USART_CR3_EIE) != RESET)
|
||
|
|
|| ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)) )
|
||
|
|
{
|
||
|
|
/* USART parity error interrupt occurred -------------------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
|
||
|
|
{
|
||
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_PEF);
|
||
|
|
|
||
|
|
husart->ErrorCode |= HAL_USART_ERROR_PE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* USART frame error interrupt occurred --------------------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
|
||
|
|
{
|
||
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_FEF);
|
||
|
|
|
||
|
|
husart->ErrorCode |= HAL_USART_ERROR_FE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* USART noise error interrupt occurred --------------------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
|
||
|
|
{
|
||
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_NEF);
|
||
|
|
|
||
|
|
husart->ErrorCode |= HAL_USART_ERROR_NE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* USART Over-Run interrupt occurred -----------------------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_ORE) != RESET) &&
|
||
|
|
(((cr1its & USART_CR1_RXNEIE) != RESET) || ((cr3its & USART_CR3_EIE) != RESET)))
|
||
|
|
{
|
||
|
|
__HAL_USART_CLEAR_IT(husart, USART_CLEAR_OREF);
|
||
|
|
|
||
|
|
husart->ErrorCode |= HAL_USART_ERROR_ORE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Call USART Error Call back function if need be --------------------------*/
|
||
|
|
if(husart->ErrorCode != HAL_USART_ERROR_NONE)
|
||
|
|
{
|
||
|
|
/* USART in mode Receiver ---------------------------------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
|
||
|
|
{
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_RX)
|
||
|
|
{
|
||
|
|
USART_Receive_IT(husart);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
USART_TransmitReceive_IT(husart);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* If Overrun error occurs, or if any error occurs in DMA mode reception,
|
||
|
|
consider error as blocking */
|
||
|
|
if (((husart->ErrorCode & HAL_USART_ERROR_ORE) != RESET) ||
|
||
|
|
(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)))
|
||
|
|
{
|
||
|
|
/* Blocking error : transfer is aborted
|
||
|
|
Set the USART state ready to be able to start again the process,
|
||
|
|
Disable Interrupts, and disable DMA requests, if ongoing */
|
||
|
|
USART_EndTransfer(husart);
|
||
|
|
|
||
|
|
/* Disable the USART DMA Rx request if enabled */
|
||
|
|
if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
|
||
|
|
{
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR | USART_CR3_DMAR);
|
||
|
|
|
||
|
|
/* Abort the USART DMA Tx channel */
|
||
|
|
if(husart->hdmatx != NULL)
|
||
|
|
{
|
||
|
|
/* Set the USART Tx DMA Abort callback to NULL : no callback
|
||
|
|
executed at end of DMA abort procedure */
|
||
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
||
|
|
|
||
|
|
/* Abort DMA TX */
|
||
|
|
HAL_DMA_Abort_IT(husart->hdmatx);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Abort the USART DMA Rx channel */
|
||
|
|
if(husart->hdmarx != NULL)
|
||
|
|
{
|
||
|
|
/* Set the USART Rx DMA Abort callback :
|
||
|
|
will lead to call HAL_USART_ErrorCallback() at end of DMA abort procedure */
|
||
|
|
husart->hdmarx->XferAbortCallback = USART_DMAAbortOnError;
|
||
|
|
|
||
|
|
/* Abort DMA RX */
|
||
|
|
if(HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
|
||
|
|
{
|
||
|
|
/* Call Directly husart->hdmarx->XferAbortCallback function in case of error */
|
||
|
|
husart->hdmarx->XferAbortCallback(husart->hdmarx);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Call user error callback */
|
||
|
|
HAL_USART_ErrorCallback(husart);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Call user error callback */
|
||
|
|
HAL_USART_ErrorCallback(husart);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Non Blocking error : transfer could go on.
|
||
|
|
Error is notified to user through user error callback */
|
||
|
|
HAL_USART_ErrorCallback(husart);
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
|
||
|
|
} /* End if some error occurs */
|
||
|
|
|
||
|
|
|
||
|
|
/* USART in mode Transmitter ------------------------------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
|
||
|
|
{
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_TX)
|
||
|
|
{
|
||
|
|
USART_Transmit_IT(husart);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
USART_TransmitReceive_IT(husart);
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* USART in mode Transmitter (transmission end) -----------------------------*/
|
||
|
|
if(((isrflags & USART_ISR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
|
||
|
|
{
|
||
|
|
USART_EndTransmit_IT(husart);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Tx Transfer completed callback.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_TxCpltCallback can be implemented in the user file.
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Tx Half Transfer completed callback.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_TxHalfCpltCallback can be implemented in the user file.
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Rx Transfer completed callback.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE: This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_RxCpltCallback can be implemented in the user file.
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Rx Half Transfer completed callback.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_RxHalfCpltCallback can be implemented in the user file
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Tx/Rx Transfers completed callback for the non-blocking process.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_TxRxCpltCallback can be implemented in the user file
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USART error callback.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_ErrorCallback can be implemented in the user file.
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USART Abort Complete callback.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
__weak void HAL_USART_AbortCpltCallback (USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Prevent unused argument(s) compilation warning */
|
||
|
|
UNUSED(husart);
|
||
|
|
|
||
|
|
/* NOTE : This function should not be modified, when the callback is needed,
|
||
|
|
the HAL_USART_AbortCpltCallback can be implemented in the user file.
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @defgroup USART_Exported_Functions_Group3 Peripheral State and Error functions
|
||
|
|
* @brief USART Peripheral State and Error functions
|
||
|
|
*
|
||
|
|
@verbatim
|
||
|
|
==============================================================================
|
||
|
|
##### Peripheral State and Error functions #####
|
||
|
|
==============================================================================
|
||
|
|
[..]
|
||
|
|
This subsection provides functions allowing to :
|
||
|
|
(+) Return the USART handle state
|
||
|
|
(+) Return the USART handle error code
|
||
|
|
|
||
|
|
@endverbatim
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Return the USART handle state.
|
||
|
|
* @param husart pointer to a USART_HandleTypeDef structure that contains
|
||
|
|
* the configuration information for the specified USART.
|
||
|
|
* @retval USART handle state
|
||
|
|
*/
|
||
|
|
HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
return husart->State;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Return the USART error code.
|
||
|
|
* @param husart pointer to a USART_HandleTypeDef structure that contains
|
||
|
|
* the configuration information for the specified USART.
|
||
|
|
* @retval USART handle Error Code
|
||
|
|
*/
|
||
|
|
uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
return husart->ErrorCode;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @defgroup USART_Private_Functions USART Private Functions
|
||
|
|
* @brief USART Private functions
|
||
|
|
*
|
||
|
|
@verbatim
|
||
|
|
[..]
|
||
|
|
This subsection provides a set of functions allowing to control the USART.
|
||
|
|
(+) USART_SetConfig() API is used to set the USART communication parameters.
|
||
|
|
(+) USART_CheckIdleState() APi ensures that TEACK and/or REACK bits are set after initialization
|
||
|
|
|
||
|
|
@endverbatim
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @brief End ongoing transfer on USART peripheral (following error detection or Transfer completion).
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_EndTransfer(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Disable TXEIE and TCIE interrupts */
|
||
|
|
/* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE | USART_CR1_RXNEIE | USART_CR1_PEIE));
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* At end of process, restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART transmit process complete callback.
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef*)(hdma->Parent);
|
||
|
|
|
||
|
|
/* DMA Normal mode */
|
||
|
|
if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
|
||
|
|
{
|
||
|
|
husart->TxXferCount = 0U;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_TX)
|
||
|
|
{
|
||
|
|
/* Disable the DMA transfer for transmit request by resetting the DMAT bit
|
||
|
|
in the USART CR3 register */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
|
||
|
|
/* Enable the USART Transmit Complete Interrupt */
|
||
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* DMA Circular mode */
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_TX)
|
||
|
|
{
|
||
|
|
HAL_USART_TxCpltCallback(husart);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART transmit process half complete callback.
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef*)(hdma->Parent);
|
||
|
|
|
||
|
|
HAL_USART_TxHalfCpltCallback(husart);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART receive process complete callback.
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef*)(hdma->Parent);
|
||
|
|
|
||
|
|
/* DMA Normal mode */
|
||
|
|
if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
|
||
|
|
{
|
||
|
|
husart->RxXferCount = 0U;
|
||
|
|
|
||
|
|
/* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Disable the DMA RX transfer for the receiver request by resetting the DMAR bit
|
||
|
|
in USART CR3 register */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
|
||
|
|
/* similarly, disable the DMA TX transfer that was started to provide the
|
||
|
|
clock to the slave device */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_RX)
|
||
|
|
{
|
||
|
|
HAL_USART_RxCpltCallback(husart);
|
||
|
|
}
|
||
|
|
/* The USART state is HAL_USART_STATE_BUSY_TX_RX */
|
||
|
|
else
|
||
|
|
{
|
||
|
|
HAL_USART_TxRxCpltCallback(husart);
|
||
|
|
}
|
||
|
|
husart->State= HAL_USART_STATE_READY;
|
||
|
|
}
|
||
|
|
/* DMA circular mode */
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_RX)
|
||
|
|
{
|
||
|
|
HAL_USART_RxCpltCallback(husart);
|
||
|
|
}
|
||
|
|
/* The USART state is HAL_USART_STATE_BUSY_TX_RX */
|
||
|
|
else
|
||
|
|
{
|
||
|
|
HAL_USART_TxRxCpltCallback(husart);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART receive process half complete callback.
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef*)(hdma->Parent);
|
||
|
|
|
||
|
|
HAL_USART_RxHalfCpltCallback(husart);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART communication error callback.
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMAError(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef*)(hdma->Parent);
|
||
|
|
|
||
|
|
husart->RxXferCount = 0U;
|
||
|
|
husart->TxXferCount = 0U;
|
||
|
|
USART_EndTransfer(husart);
|
||
|
|
|
||
|
|
husart->ErrorCode |= HAL_USART_ERROR_DMA;
|
||
|
|
husart->State= HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
HAL_USART_ErrorCallback(husart);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART communication abort callback, when initiated by HAL services on Error
|
||
|
|
* (To be called at end of DMA Abort procedure following error occurrence).
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef*)(hdma->Parent);
|
||
|
|
husart->RxXferCount = 0U;
|
||
|
|
husart->TxXferCount = 0U;
|
||
|
|
|
||
|
|
HAL_USART_ErrorCallback(husart);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART Tx communication abort callback, when initiated by user
|
||
|
|
* (To be called at end of DMA Tx Abort procedure following user abort request).
|
||
|
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
||
|
|
* Abort still ongoing for Rx DMA Handle.
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef* )(hdma->Parent);
|
||
|
|
|
||
|
|
husart->hdmatx->XferAbortCallback = NULL;
|
||
|
|
|
||
|
|
/* Check if an Abort process is still ongoing */
|
||
|
|
if(husart->hdmarx != NULL)
|
||
|
|
{
|
||
|
|
if(husart->hdmarx->XferAbortCallback != NULL)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
||
|
|
husart->TxXferCount = 0U;
|
||
|
|
husart->RxXferCount = 0U;
|
||
|
|
|
||
|
|
/* Reset errorCode */
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
|
||
|
|
/* Clear the Error flags in the ICR register */
|
||
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
||
|
|
|
||
|
|
/* Restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Call user Abort complete callback */
|
||
|
|
HAL_USART_AbortCpltCallback(husart);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief DMA USART Rx communication abort callback, when initiated by user
|
||
|
|
* (To be called at end of DMA Rx Abort procedure following user abort request).
|
||
|
|
* @note When this callback is executed, User Abort complete call back is called only if no
|
||
|
|
* Abort still ongoing for Tx DMA Handle.
|
||
|
|
* @param hdma DMA handle.
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
|
||
|
|
{
|
||
|
|
USART_HandleTypeDef* husart = (USART_HandleTypeDef* )(hdma->Parent);
|
||
|
|
|
||
|
|
husart->hdmarx->XferAbortCallback = NULL;
|
||
|
|
|
||
|
|
/* Check if an Abort process is still ongoing */
|
||
|
|
if(husart->hdmatx != NULL)
|
||
|
|
{
|
||
|
|
if(husart->hdmatx->XferAbortCallback != NULL)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
|
||
|
|
husart->TxXferCount = 0U;
|
||
|
|
husart->RxXferCount = 0U;
|
||
|
|
|
||
|
|
/* Reset errorCode */
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
|
||
|
|
/* Clear the Error flags in the ICR register */
|
||
|
|
__HAL_USART_CLEAR_FLAG(husart, USART_CLEAR_OREF | USART_CLEAR_NEF | USART_CLEAR_PEF | USART_CLEAR_FEF);
|
||
|
|
|
||
|
|
/* Restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Call user Abort complete callback */
|
||
|
|
HAL_USART_AbortCpltCallback(husart);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Handle USART Communication Timeout.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @param Flag Specifies the USART flag to check.
|
||
|
|
* @param Status the Flag status (SET or RESET).
|
||
|
|
* @param Tickstart Tick start value
|
||
|
|
* @param Timeout timeout duration.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)
|
||
|
|
{
|
||
|
|
/* Wait until flag is set */
|
||
|
|
while((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status)
|
||
|
|
{
|
||
|
|
/* Check for the Timeout */
|
||
|
|
if(Timeout != HAL_MAX_DELAY)
|
||
|
|
{
|
||
|
|
if((Timeout == 0U) || ((HAL_GetTick()-Tickstart) > Timeout))
|
||
|
|
{
|
||
|
|
/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
husart->State= HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Configure the USART peripheral.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
uint32_t tmpreg = 0x0U;
|
||
|
|
USART_ClockSourceTypeDef clocksource = USART_CLOCKSOURCE_UNDEFINED;
|
||
|
|
HAL_StatusTypeDef ret = HAL_OK;
|
||
|
|
uint16_t brrtemp = 0x0000U;
|
||
|
|
uint16_t usartdiv = 0x0000U;
|
||
|
|
|
||
|
|
/* Check the parameters */
|
||
|
|
assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity));
|
||
|
|
assert_param(IS_USART_PHASE(husart->Init.CLKPhase));
|
||
|
|
assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit));
|
||
|
|
assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate));
|
||
|
|
assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength));
|
||
|
|
assert_param(IS_USART_STOPBITS(husart->Init.StopBits));
|
||
|
|
assert_param(IS_USART_PARITY(husart->Init.Parity));
|
||
|
|
assert_param(IS_USART_MODE(husart->Init.Mode));
|
||
|
|
|
||
|
|
|
||
|
|
/*-------------------------- USART CR1 Configuration -----------------------*/
|
||
|
|
/* Clear M, PCE, PS, TE and RE bits and configure
|
||
|
|
* the USART Word Length, Parity and Mode:
|
||
|
|
* set the M bits according to husart->Init.WordLength value
|
||
|
|
* set PCE and PS bits according to husart->Init.Parity value
|
||
|
|
* set TE and RE bits according to husart->Init.Mode value
|
||
|
|
* force OVER8 to 1 to allow to reach the maximum speed (Fclock/8) */
|
||
|
|
tmpreg = (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8;
|
||
|
|
MODIFY_REG(husart->Instance->CR1, USART_CR1_FIELDS, tmpreg);
|
||
|
|
|
||
|
|
/*---------------------------- USART CR2 Configuration ---------------------*/
|
||
|
|
/* Clear and configure the USART Clock, CPOL, CPHA, LBCL and STOP bits:
|
||
|
|
* set CPOL bit according to husart->Init.CLKPolarity value
|
||
|
|
* set CPHA bit according to husart->Init.CLKPhase value
|
||
|
|
* set LBCL bit according to husart->Init.CLKLastBit value
|
||
|
|
* set STOP[13:12] bits according to husart->Init.StopBits value */
|
||
|
|
tmpreg = (uint32_t)(USART_CLOCK_ENABLE);
|
||
|
|
tmpreg |= ((uint32_t)husart->Init.CLKPolarity | (uint32_t)husart->Init.CLKPhase);
|
||
|
|
tmpreg |= ((uint32_t)husart->Init.CLKLastBit | (uint32_t)husart->Init.StopBits);
|
||
|
|
MODIFY_REG(husart->Instance->CR2, USART_CR2_FIELDS, tmpreg);
|
||
|
|
|
||
|
|
/*-------------------------- USART CR3 Configuration -----------------------*/
|
||
|
|
/* no CR3 register configuration */
|
||
|
|
|
||
|
|
/*-------------------------- USART BRR Configuration -----------------------*/
|
||
|
|
/* BRR is filled-up according to OVER8 bit setting which is forced to 1 */
|
||
|
|
USART_GETCLOCKSOURCE(husart, clocksource);
|
||
|
|
switch (clocksource)
|
||
|
|
{
|
||
|
|
case USART_CLOCKSOURCE_PCLK1:
|
||
|
|
usartdiv = (uint16_t)(((2*HAL_RCC_GetPCLK1Freq()) + (husart->Init.BaudRate/2)) / husart->Init.BaudRate);
|
||
|
|
break;
|
||
|
|
case USART_CLOCKSOURCE_HSI:
|
||
|
|
usartdiv = (uint16_t)(((2*HSI_VALUE) + (husart->Init.BaudRate/2)) / husart->Init.BaudRate);
|
||
|
|
break;
|
||
|
|
case USART_CLOCKSOURCE_SYSCLK:
|
||
|
|
usartdiv = (uint16_t)(((2*HAL_RCC_GetSysClockFreq()) + (husart->Init.BaudRate/2)) / husart->Init.BaudRate);
|
||
|
|
break;
|
||
|
|
case USART_CLOCKSOURCE_LSE:
|
||
|
|
usartdiv = (uint16_t)(((2*LSE_VALUE) + (husart->Init.BaudRate/2)) / husart->Init.BaudRate);
|
||
|
|
break;
|
||
|
|
case USART_CLOCKSOURCE_UNDEFINED:
|
||
|
|
default:
|
||
|
|
ret = HAL_ERROR;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
brrtemp = usartdiv & 0xFFF0U;
|
||
|
|
brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000FU) >> 1U);
|
||
|
|
husart->Instance->BRR = brrtemp;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Check the USART Idle State.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
#if !defined(STM32F030x6) && !defined(STM32F030x8)&& !defined(STM32F070xB)&& !defined(STM32F070x6)&& !defined(STM32F030xC)
|
||
|
|
uint32_t tickstart = 0U;
|
||
|
|
#endif /* !defined(STM32F030x6) && !defined(STM32F030x8)&& !defined(STM32F070xB)&& !defined(STM32F070x6)&& !defined(STM32F030xC) */
|
||
|
|
|
||
|
|
/* Initialize the USART ErrorCode */
|
||
|
|
husart->ErrorCode = HAL_USART_ERROR_NONE;
|
||
|
|
|
||
|
|
#if !defined(STM32F030x6) && !defined(STM32F030x8)&& !defined(STM32F070xB)&& !defined(STM32F070x6)&& !defined(STM32F030xC)
|
||
|
|
/* Init tickstart for timeout managment*/
|
||
|
|
tickstart = HAL_GetTick();
|
||
|
|
|
||
|
|
/* TEACK and REACK bits in ISR are checked only when available (not available on all F0 devices).
|
||
|
|
Bits are defined for some specific devices, and are available only for UART instances supporting WakeUp from Stop Mode feature.
|
||
|
|
*/
|
||
|
|
if (IS_UART_WAKEUP_FROMSTOP_INSTANCE(husart->Instance))
|
||
|
|
{
|
||
|
|
/* Check if the Transmitter is enabled */
|
||
|
|
if((husart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
|
||
|
|
{
|
||
|
|
/* Wait until TEACK flag is set */
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_ISR_TEACK, RESET, tickstart, USART_TEACK_REACK_TIMEOUT) != HAL_OK)
|
||
|
|
{
|
||
|
|
/* Timeout occurred */
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check if the Receiver is enabled */
|
||
|
|
if((husart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
|
||
|
|
{
|
||
|
|
/* Wait until REACK flag is set */
|
||
|
|
if(USART_WaitOnFlagUntilTimeout(husart, USART_ISR_REACK, RESET, tickstart, USART_TEACK_REACK_TIMEOUT) != HAL_OK)
|
||
|
|
{
|
||
|
|
/* Timeout occurred */
|
||
|
|
return HAL_TIMEOUT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif /* !defined(STM32F030x6) && !defined(STM32F030x8)&& !defined(STM32F070xB)&& !defined(STM32F070x6)&& !defined(STM32F030xC) */
|
||
|
|
|
||
|
|
/* Initialize the USART state*/
|
||
|
|
husart->State= HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
/* Process Unlocked */
|
||
|
|
__HAL_UNLOCK(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Simplex send an amount of data in non-blocking mode.
|
||
|
|
* @note Function called under interruption only, once
|
||
|
|
* interruptions have been enabled by HAL_USART_Transmit_IT().
|
||
|
|
* @note The USART errors are not managed to avoid the overrun error.
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
uint16_t* tmp=0U;
|
||
|
|
|
||
|
|
/* Check that a Tx process is ongoing */
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_TX)
|
||
|
|
{
|
||
|
|
|
||
|
|
if(husart->TxXferCount == 0U)
|
||
|
|
{
|
||
|
|
/* Disable the USART Transmit data register empty interrupt */
|
||
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
||
|
|
|
||
|
|
/* Enable the USART Transmit Complete Interrupt */
|
||
|
|
__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) husart->pTxBuffPtr;
|
||
|
|
husart->Instance->TDR = (*tmp & (uint16_t)0x01FFU);
|
||
|
|
husart->pTxBuffPtr += 2U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0xFFU);
|
||
|
|
}
|
||
|
|
|
||
|
|
husart->TxXferCount--;
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Wraps up transmission in non-blocking mode.
|
||
|
|
* @param husart Pointer to a USART_HandleTypeDef structure that contains
|
||
|
|
* the configuration information for the specified USART module.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
/* Disable the USART Transmit Complete Interrupt */
|
||
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TC);
|
||
|
|
|
||
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
||
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
|
||
|
|
|
||
|
|
/* Tx process is ended, restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
HAL_USART_TxCpltCallback(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Simplex receive an amount of data in non-blocking mode.
|
||
|
|
* @note Function called under interruption only, once
|
||
|
|
* interruptions have been enabled by HAL_USART_Receive_IT().
|
||
|
|
* @param husart USART handle
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
uint16_t* tmp=0U;
|
||
|
|
uint16_t uhMask = husart->Mask;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_RX)
|
||
|
|
{
|
||
|
|
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) husart->pRxBuffPtr;
|
||
|
|
*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
|
||
|
|
husart->pRxBuffPtr += 2U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
*husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
|
||
|
|
husart->Instance->TDR = (USART_DUMMY_DATA & (uint16_t)0x00FFU);
|
||
|
|
|
||
|
|
if(--husart->RxXferCount == 0U)
|
||
|
|
{
|
||
|
|
/* Disable the USART Parity Error Interrupt and RXNE interrupt*/
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
||
|
|
|
||
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Rx process is completed, restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
HAL_USART_RxCpltCallback(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
|
||
|
|
* @note Function called under interruption only, once
|
||
|
|
* interruptions have been enabled by HAL_USART_TransmitReceive_IT().
|
||
|
|
* @param husart USART handle.
|
||
|
|
* @retval HAL status
|
||
|
|
*/
|
||
|
|
static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart)
|
||
|
|
{
|
||
|
|
uint16_t* tmp=0U;
|
||
|
|
uint16_t uhMask = husart->Mask;
|
||
|
|
|
||
|
|
if(husart->State == HAL_USART_STATE_BUSY_TX_RX)
|
||
|
|
{
|
||
|
|
|
||
|
|
if(husart->TxXferCount != 0x00U)
|
||
|
|
{
|
||
|
|
if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET)
|
||
|
|
{
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) husart->pTxBuffPtr;
|
||
|
|
husart->Instance->TDR = (uint16_t)(*tmp & uhMask);
|
||
|
|
husart->pTxBuffPtr += 2U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)uhMask);
|
||
|
|
}
|
||
|
|
husart->TxXferCount--;
|
||
|
|
|
||
|
|
/* Check the latest data transmitted */
|
||
|
|
if(husart->TxXferCount == 0U)
|
||
|
|
{
|
||
|
|
__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(husart->RxXferCount != 0x00U)
|
||
|
|
{
|
||
|
|
if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET)
|
||
|
|
{
|
||
|
|
if((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
|
||
|
|
{
|
||
|
|
tmp = (uint16_t*) husart->pRxBuffPtr;
|
||
|
|
*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
|
||
|
|
husart->pRxBuffPtr += 2U;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
*husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
|
||
|
|
}
|
||
|
|
husart->RxXferCount--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check the latest data received */
|
||
|
|
if(husart->RxXferCount == 0U)
|
||
|
|
{
|
||
|
|
/* Disable the USART Parity Error Interrupt and RXNE interrupt*/
|
||
|
|
CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
|
||
|
|
|
||
|
|
/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
||
|
|
CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
|
||
|
|
|
||
|
|
/* Rx process is completed, restore husart->State to Ready */
|
||
|
|
husart->State = HAL_USART_STATE_READY;
|
||
|
|
|
||
|
|
HAL_USART_TxRxCpltCallback(husart);
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
return HAL_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return HAL_BUSY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
#endif /* HAL_USART_MODULE_ENABLED */
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|