[303] | 1 | /**
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| 2 | ******************************************************************************
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| 3 | * @file stm32f4xx_hal_uart.c
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| 4 | * @author MCD Application Team
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| 5 | * @version V1.4.1
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| 6 | * @date 09-October-2015
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| 7 | * @brief UART HAL module driver.
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| 8 | * This file provides firmware functions to manage the following
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| 9 | * functionalities of the Universal Asynchronous Receiver Transmitter (UART) peripheral:
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| 10 | * + Initialization and de-initialization functions
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| 11 | * + IO operation functions
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| 12 | * + Peripheral Control functions
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| 13 | * + Peripheral State and Errors functions
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| 14 | *
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| 15 | @verbatim
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| 16 | ==============================================================================
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| 17 | ##### How to use this driver #####
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| 18 | ==============================================================================
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| 19 | [..]
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| 20 | The UART HAL driver can be used as follows:
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| 21 |
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| 22 | (#) Declare a UART_HandleTypeDef handle structure.
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| 23 |
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| 24 | (#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
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| 25 | (##) Enable the USARTx interface clock.
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| 26 | (##) UART pins configuration:
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| 27 | (+++) Enable the clock for the UART GPIOs.
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| 28 | (+++) Configure these UART pins as alternate function pull-up.
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| 29 | (##) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
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| 30 | and HAL_UART_Receive_IT() APIs):
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| 31 | (+++) Configure the USARTx interrupt priority.
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| 32 | (+++) Enable the NVIC USART IRQ handle.
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| 33 | (##) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
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| 34 | and HAL_UART_Receive_DMA() APIs):
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| 35 | (+++) Declare a DMA handle structure for the Tx/Rx stream.
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| 36 | (+++) Enable the DMAx interface clock.
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| 37 | (+++) Configure the declared DMA handle structure with the required
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| 38 | Tx/Rx parameters.
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| 39 | (+++) Configure the DMA Tx/Rx Stream.
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| 40 | (+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
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| 41 | (+++) Configure the priority and enable the NVIC for the transfer complete
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| 42 | interrupt on the DMA Tx/Rx Stream.
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| 43 |
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| 44 | (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
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| 45 | flow control and Mode(Receiver/Transmitter) in the Init structure.
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| 46 |
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| 47 | (#) For the UART asynchronous mode, initialize the UART registers by calling
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| 48 | the HAL_UART_Init() API.
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| 49 |
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| 50 | (#) For the UART Half duplex mode, initialize the UART registers by calling
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| 51 | the HAL_HalfDuplex_Init() API.
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| 52 |
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| 53 | (#) For the LIN mode, initialize the UART registers by calling the HAL_LIN_Init() API.
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| 54 |
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| 55 | (#) For the Multi-Processor mode, initialize the UART registers by calling
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| 56 | the HAL_MultiProcessor_Init() API.
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| 57 |
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| 58 | [..]
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| 59 | (@) The specific UART interrupts (Transmission complete interrupt,
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| 60 | RXNE interrupt and Error Interrupts) will be managed using the macros
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| 61 | __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit
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| 62 | and receive process.
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| 63 |
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| 64 | [..]
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| 65 | (@) These APIs (HAL_UART_Init() and HAL_HalfDuplex_Init()) configure also the
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| 66 | low level Hardware GPIO, CLOCK, CORTEX...etc) by calling the customized
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| 67 | HAL_UART_MspInit() API.
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| 68 |
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| 69 | [..]
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| 70 | Three operation modes are available within this driver :
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| 71 |
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| 72 | *** Polling mode IO operation ***
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| 73 | =================================
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| 74 | [..]
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| 75 | (+) Send an amount of data in blocking mode using HAL_UART_Transmit()
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| 76 | (+) Receive an amount of data in blocking mode using HAL_UART_Receive()
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| 77 |
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| 78 | *** Interrupt mode IO operation ***
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| 79 | ===================================
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| 80 | [..]
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| 81 | (+) Send an amount of data in non blocking mode using HAL_UART_Transmit_IT()
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| 82 | (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
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| 83 | add his own code by customization of function pointer HAL_UART_TxCpltCallback
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| 84 | (+) Receive an amount of data in non blocking mode using HAL_UART_Receive_IT()
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| 85 | (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
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| 86 | add his own code by customization of function pointer HAL_UART_RxCpltCallback
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| 87 | (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
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| 88 | add his own code by customization of function pointer HAL_UART_ErrorCallback
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| 89 |
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| 90 | *** DMA mode IO operation ***
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| 91 | ==============================
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| 92 | [..]
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| 93 | (+) Send an amount of data in non blocking mode (DMA) using HAL_UART_Transmit_DMA()
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| 94 | (+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can
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| 95 | add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback
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| 96 | (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
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| 97 | add his own code by customization of function pointer HAL_UART_TxCpltCallback
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| 98 | (+) Receive an amount of data in non blocking mode (DMA) using HAL_UART_Receive_DMA()
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| 99 | (+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can
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| 100 | add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback
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| 101 | (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
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| 102 | add his own code by customization of function pointer HAL_UART_RxCpltCallback
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| 103 | (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
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| 104 | add his own code by customization of function pointer HAL_UART_ErrorCallback
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| 105 | (+) Pause the DMA Transfer using HAL_UART_DMAPause()
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| 106 | (+) Resume the DMA Transfer using HAL_UART_DMAResume()
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| 107 | (+) Stop the DMA Transfer using HAL_UART_DMAStop()
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| 108 |
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| 109 | *** UART HAL driver macros list ***
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| 110 | =============================================
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| 111 | [..]
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| 112 | Below the list of most used macros in UART HAL driver.
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| 113 |
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| 114 | (+) __HAL_UART_ENABLE: Enable the UART peripheral
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| 115 | (+) __HAL_UART_DISABLE: Disable the UART peripheral
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| 116 | (+) __HAL_UART_GET_FLAG : Check whether the specified UART flag is set or not
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| 117 | (+) __HAL_UART_CLEAR_FLAG : Clear the specified UART pending flag
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| 118 | (+) __HAL_UART_ENABLE_IT: Enable the specified UART interrupt
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| 119 | (+) __HAL_UART_DISABLE_IT: Disable the specified UART interrupt
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| 120 | (+) __HAL_UART_GET_IT_SOURCE: Check whether the specified UART interrupt has occurred or not
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| 121 |
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| 122 | [..]
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| 123 | (@) You can refer to the UART HAL driver header file for more useful macros
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| 124 |
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| 125 | @endverbatim
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| 126 | ******************************************************************************
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| 127 | * @attention
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| 128 | *
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| 129 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
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| 130 | *
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| 131 | * Redistribution and use in source and binary forms, with or without modification,
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| 132 | * are permitted provided that the following conditions are met:
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| 133 | * 1. Redistributions of source code must retain the above copyright notice,
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| 134 | * this list of conditions and the following disclaimer.
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| 135 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 136 | * this list of conditions and the following disclaimer in the documentation
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| 137 | * and/or other materials provided with the distribution.
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| 138 | * 3. Neither the name of STMicroelectronics nor the names of its contributors
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| 139 | * may be used to endorse or promote products derived from this software
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| 140 | * without specific prior written permission.
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| 141 | *
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| 142 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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| 143 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 144 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 145 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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| 146 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 147 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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| 148 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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| 149 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 150 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 151 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 152 | *
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| 153 | ******************************************************************************
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| 154 | */
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| 155 |
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| 156 | /* Includes ------------------------------------------------------------------*/
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| 157 | #include "stm32f4xx_hal.h"
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| 158 |
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| 159 | /** @addtogroup STM32F4xx_HAL_Driver
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| 160 | * @{
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| 161 | */
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| 162 |
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| 163 | /** @defgroup UART UART
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| 164 | * @brief HAL UART module driver
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| 165 | * @{
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| 166 | */
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| 167 | #ifdef HAL_UART_MODULE_ENABLED
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| 168 |
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| 169 | /* Private typedef -----------------------------------------------------------*/
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| 170 | /* Private define ------------------------------------------------------------*/
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| 171 | /** @addtogroup UART_Private_Constants
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| 172 | * @{
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| 173 | */
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| 174 | #define UART_TIMEOUT_VALUE 22000
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| 175 | /**
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| 176 | * @}
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| 177 | */
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| 178 | /* Private macro -------------------------------------------------------------*/
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| 179 | /* Private variables ---------------------------------------------------------*/
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| 180 | /* Private function prototypes -----------------------------------------------*/
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| 181 | /** @addtogroup UART_Private_Functions UART Private Functions
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| 182 | * @{
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| 183 | */
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| 184 | static void UART_SetConfig (UART_HandleTypeDef *huart);
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| 185 | static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
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| 186 | static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
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| 187 | static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
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| 188 | static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
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| 189 | static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
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| 190 | static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
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| 191 | static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
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| 192 | static void UART_DMAError(DMA_HandleTypeDef *hdma);
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| 193 | static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
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| 194 | /**
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| 195 | * @}
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| 196 | */
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| 197 |
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| 198 | /* Exported functions ---------------------------------------------------------*/
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| 199 | /** @defgroup UART_Exported_Functions UART Exported Functions
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| 200 | * @{
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| 201 | */
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| 202 |
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| 203 | /** @defgroup UART_Exported_Functions_Group1 Initialization and de-initialization functions
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| 204 | * @brief Initialization and Configuration functions
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| 205 | *
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| 206 | @verbatim
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| 207 | ===============================================================================
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| 208 | ##### Initialization and Configuration functions #####
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| 209 | ===============================================================================
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| 210 | [..]
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| 211 | This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
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| 212 | in asynchronous mode.
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| 213 | (+) For the asynchronous mode only these parameters can be configured:
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| 214 | (++) Baud Rate
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| 215 | (++) Word Length
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| 216 | (++) Stop Bit
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| 217 | (++) Parity: If the parity is enabled, then the MSB bit of the data written
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| 218 | in the data register is transmitted but is changed by the parity bit.
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| 219 | Depending on the frame length defined by the M bit (8-bits or 9-bits),
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| 220 | please refer to Reference manual for possible UART frame formats.
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| 221 | (++) Hardware flow control
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| 222 | (++) Receiver/transmitter modes
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| 223 | (++) Over Sampling Method
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| 224 | [..]
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| 225 | The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init() and HAL_MultiProcessor_Init() APIs
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| 226 | follow respectively the UART asynchronous, UART Half duplex, LIN and Multi-Processor
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| 227 | configuration procedures (details for the procedures are available in reference manual (RM0329)).
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| 228 |
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| 229 | @endverbatim
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| 230 | * @{
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| 231 | */
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| 232 |
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| 233 | /**
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| 234 | * @brief Initializes the UART mode according to the specified parameters in
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| 235 | * the UART_InitTypeDef and create the associated handle.
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| 236 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
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| 237 | * the configuration information for the specified UART module.
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| 238 | * @retval HAL status
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| 239 | */
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| 240 | HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
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| 241 | {
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| 242 | /* Check the UART handle allocation */
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| 243 | if(huart == NULL)
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| 244 | {
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| 245 | return HAL_ERROR;
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| 246 | }
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| 247 |
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| 248 | /* Check the parameters */
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| 249 | if(huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
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| 250 | {
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| 251 | /* The hardware flow control is available only for USART1, USART2, USART3 and USART6 */
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| 252 | assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
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| 253 | assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
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| 254 | }
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| 255 | else
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| 256 | {
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| 257 | assert_param(IS_UART_INSTANCE(huart->Instance));
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| 258 | }
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| 259 | assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
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| 260 | assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
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| 261 |
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| 262 | if(huart->State == HAL_UART_STATE_RESET)
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| 263 | {
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| 264 | /* Allocate lock resource and initialize it */
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| 265 | huart->Lock = HAL_UNLOCKED;
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| 266 | /* Init the low level hardware */
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| 267 | HAL_UART_MspInit(huart);
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| 268 | }
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| 269 |
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| 270 | huart->State = HAL_UART_STATE_BUSY;
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| 271 |
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| 272 | /* Disable the peripheral */
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| 273 | __HAL_UART_DISABLE(huart);
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| 274 |
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| 275 | /* Set the UART Communication parameters */
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| 276 | UART_SetConfig(huart);
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| 277 |
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| 278 | /* In asynchronous mode, the following bits must be kept cleared:
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| 279 | - LINEN and CLKEN bits in the USART_CR2 register,
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| 280 | - SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
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| 281 | huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
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| 282 | huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
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| 283 |
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| 284 | /* Enable the peripheral */
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| 285 | __HAL_UART_ENABLE(huart);
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| 286 |
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| 287 | /* Initialize the UART state */
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| 288 | huart->ErrorCode = HAL_UART_ERROR_NONE;
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| 289 | huart->State= HAL_UART_STATE_READY;
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| 290 |
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| 291 | return HAL_OK;
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| 292 | }
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| 293 |
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| 294 | /**
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| 295 | * @brief Initializes the half-duplex mode according to the specified
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| 296 | * parameters in the UART_InitTypeDef and create the associated handle.
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| 297 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
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| 298 | * the configuration information for the specified UART module.
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| 299 | * @retval HAL status
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| 300 | */
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| 301 | HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
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| 302 | {
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| 303 | /* Check the UART handle allocation */
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| 304 | if(huart == NULL)
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| 305 | {
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| 306 | return HAL_ERROR;
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| 307 | }
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| 308 |
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| 309 | /* Check the parameters */
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| 310 | assert_param(IS_UART_INSTANCE(huart->Instance));
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| 311 | assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
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| 312 | assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
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| 313 |
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| 314 | if(huart->State == HAL_UART_STATE_RESET)
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| 315 | {
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| 316 | /* Allocate lock resource and initialize it */
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| 317 | huart->Lock = HAL_UNLOCKED;
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| 318 | /* Init the low level hardware */
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| 319 | HAL_UART_MspInit(huart);
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| 320 | }
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| 321 |
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| 322 | huart->State = HAL_UART_STATE_BUSY;
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| 323 |
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| 324 | /* Disable the peripheral */
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| 325 | __HAL_UART_DISABLE(huart);
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| 326 |
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| 327 | /* Set the UART Communication parameters */
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| 328 | UART_SetConfig(huart);
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| 329 |
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| 330 | /* In half-duplex mode, the following bits must be kept cleared:
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| 331 | - LINEN and CLKEN bits in the USART_CR2 register,
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| 332 | - SCEN and IREN bits in the USART_CR3 register.*/
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| 333 | huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
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| 334 | huart->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_SCEN);
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| 335 |
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| 336 | /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
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| 337 | huart->Instance->CR3 |= USART_CR3_HDSEL;
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| 338 |
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| 339 | /* Enable the peripheral */
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| 340 | __HAL_UART_ENABLE(huart);
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| 341 |
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| 342 | /* Initialize the UART state*/
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| 343 | huart->ErrorCode = HAL_UART_ERROR_NONE;
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| 344 | huart->State= HAL_UART_STATE_READY;
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| 345 |
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| 346 | return HAL_OK;
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| 347 | }
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| 348 |
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| 349 | /**
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| 350 | * @brief Initializes the LIN mode according to the specified
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| 351 | * parameters in the UART_InitTypeDef and create the associated handle.
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| 352 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
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| 353 | * the configuration information for the specified UART module.
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| 354 | * @param BreakDetectLength: Specifies the LIN break detection length.
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| 355 | * This parameter can be one of the following values:
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| 356 | * @arg UART_LINBREAKDETECTLENGTH_10B: 10-bit break detection
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| 357 | * @arg UART_LINBREAKDETECTLENGTH_11B: 11-bit break detection
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| 358 | * @retval HAL status
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| 359 | */
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| 360 | HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
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| 361 | {
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| 362 | /* Check the UART handle allocation */
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| 363 | if(huart == NULL)
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| 364 | {
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| 365 | return HAL_ERROR;
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| 366 | }
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| 367 |
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| 368 | /* Check the parameters */
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| 369 | assert_param(IS_UART_INSTANCE(huart->Instance));
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| 370 | assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
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| 371 | assert_param(IS_UART_LIN_WORD_LENGTH(huart->Init.WordLength));
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| 372 | assert_param(IS_UART_LIN_OVERSAMPLING(huart->Init.OverSampling));
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| 373 |
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| 374 | if(huart->State == HAL_UART_STATE_RESET)
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| 375 | {
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| 376 | /* Allocate lock resource and initialize it */
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| 377 | huart->Lock = HAL_UNLOCKED;
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| 378 | /* Init the low level hardware */
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| 379 | HAL_UART_MspInit(huart);
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| 380 | }
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| 381 |
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| 382 | huart->State = HAL_UART_STATE_BUSY;
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| 383 |
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| 384 | /* Disable the peripheral */
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| 385 | __HAL_UART_DISABLE(huart);
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| 386 |
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| 387 | /* Set the UART Communication parameters */
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| 388 | UART_SetConfig(huart);
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| 389 |
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| 390 | /* In LIN mode, the following bits must be kept cleared:
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| 391 | - LINEN and CLKEN bits in the USART_CR2 register,
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| 392 | - SCEN and IREN bits in the USART_CR3 register.*/
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| 393 | huart->Instance->CR2 &= ~(USART_CR2_CLKEN);
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| 394 | huart->Instance->CR3 &= ~(USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN);
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| 395 |
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| 396 | /* Enable the LIN mode by setting the LINEN bit in the CR2 register */
|
---|
| 397 | huart->Instance->CR2 |= USART_CR2_LINEN;
|
---|
| 398 |
|
---|
| 399 | /* Set the USART LIN Break detection length. */
|
---|
| 400 | huart->Instance->CR2 &= ~(USART_CR2_LBDL);
|
---|
| 401 | huart->Instance->CR2 |= BreakDetectLength;
|
---|
| 402 |
|
---|
| 403 | /* Enable the peripheral */
|
---|
| 404 | __HAL_UART_ENABLE(huart);
|
---|
| 405 |
|
---|
| 406 | /* Initialize the UART state*/
|
---|
| 407 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 408 | huart->State= HAL_UART_STATE_READY;
|
---|
| 409 |
|
---|
| 410 | return HAL_OK;
|
---|
| 411 | }
|
---|
| 412 |
|
---|
| 413 | /**
|
---|
| 414 | * @brief Initializes the Multi-Processor mode according to the specified
|
---|
| 415 | * parameters in the UART_InitTypeDef and create the associated handle.
|
---|
| 416 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 417 | * the configuration information for the specified UART module.
|
---|
| 418 | * @param Address: USART address
|
---|
| 419 | * @param WakeUpMethod: specifies the USART wake-up method.
|
---|
| 420 | * This parameter can be one of the following values:
|
---|
| 421 | * @arg UART_WAKEUPMETHOD_IDLELINE: Wake-up by an idle line detection
|
---|
| 422 | * @arg UART_WAKEUPMETHOD_ADDRESSMARK: Wake-up by an address mark
|
---|
| 423 | * @retval HAL status
|
---|
| 424 | */
|
---|
| 425 | HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
|
---|
| 426 | {
|
---|
| 427 | /* Check the UART handle allocation */
|
---|
| 428 | if(huart == NULL)
|
---|
| 429 | {
|
---|
| 430 | return HAL_ERROR;
|
---|
| 431 | }
|
---|
| 432 |
|
---|
| 433 | /* Check the parameters */
|
---|
| 434 | assert_param(IS_UART_INSTANCE(huart->Instance));
|
---|
| 435 | assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
|
---|
| 436 | assert_param(IS_UART_ADDRESS(Address));
|
---|
| 437 | assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
|
---|
| 438 | assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
|
---|
| 439 |
|
---|
| 440 | if(huart->State == HAL_UART_STATE_RESET)
|
---|
| 441 | {
|
---|
| 442 | /* Allocate lock resource and initialize it */
|
---|
| 443 | huart->Lock = HAL_UNLOCKED;
|
---|
| 444 | /* Init the low level hardware */
|
---|
| 445 | HAL_UART_MspInit(huart);
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 | huart->State = HAL_UART_STATE_BUSY;
|
---|
| 449 |
|
---|
| 450 | /* Disable the peripheral */
|
---|
| 451 | __HAL_UART_DISABLE(huart);
|
---|
| 452 |
|
---|
| 453 | /* Set the UART Communication parameters */
|
---|
| 454 | UART_SetConfig(huart);
|
---|
| 455 |
|
---|
| 456 | /* In Multi-Processor mode, the following bits must be kept cleared:
|
---|
| 457 | - LINEN and CLKEN bits in the USART_CR2 register,
|
---|
| 458 | - SCEN, HDSEL and IREN bits in the USART_CR3 register */
|
---|
| 459 | huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
|
---|
| 460 | huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
|
---|
| 461 |
|
---|
| 462 | /* Clear the USART address */
|
---|
| 463 | huart->Instance->CR2 &= ~(USART_CR2_ADD);
|
---|
| 464 | /* Set the USART address node */
|
---|
| 465 | huart->Instance->CR2 |= Address;
|
---|
| 466 |
|
---|
| 467 | /* Set the wake up method by setting the WAKE bit in the CR1 register */
|
---|
| 468 | huart->Instance->CR1 &= ~(USART_CR1_WAKE);
|
---|
| 469 | huart->Instance->CR1 |= WakeUpMethod;
|
---|
| 470 |
|
---|
| 471 | /* Enable the peripheral */
|
---|
| 472 | __HAL_UART_ENABLE(huart);
|
---|
| 473 |
|
---|
| 474 | /* Initialize the UART state */
|
---|
| 475 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 476 | huart->State= HAL_UART_STATE_READY;
|
---|
| 477 |
|
---|
| 478 | return HAL_OK;
|
---|
| 479 | }
|
---|
| 480 |
|
---|
| 481 | /**
|
---|
| 482 | * @brief DeInitializes the UART peripheral.
|
---|
| 483 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 484 | * the configuration information for the specified UART module.
|
---|
| 485 | * @retval HAL status
|
---|
| 486 | */
|
---|
| 487 | HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
|
---|
| 488 | {
|
---|
| 489 | /* Check the UART handle allocation */
|
---|
| 490 | if(huart == NULL)
|
---|
| 491 | {
|
---|
| 492 | return HAL_ERROR;
|
---|
| 493 | }
|
---|
| 494 |
|
---|
| 495 | /* Check the parameters */
|
---|
| 496 | assert_param(IS_UART_INSTANCE(huart->Instance));
|
---|
| 497 |
|
---|
| 498 | huart->State = HAL_UART_STATE_BUSY;
|
---|
| 499 |
|
---|
| 500 | /* DeInit the low level hardware */
|
---|
| 501 | HAL_UART_MspDeInit(huart);
|
---|
| 502 |
|
---|
| 503 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 504 | huart->State = HAL_UART_STATE_RESET;
|
---|
| 505 |
|
---|
| 506 | /* Process Lock */
|
---|
| 507 | __HAL_UNLOCK(huart);
|
---|
| 508 |
|
---|
| 509 | return HAL_OK;
|
---|
| 510 | }
|
---|
| 511 |
|
---|
| 512 | /**
|
---|
| 513 | * @brief UART MSP Init.
|
---|
| 514 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 515 | * the configuration information for the specified UART module.
|
---|
| 516 | * @retval None
|
---|
| 517 | */
|
---|
| 518 | __weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
|
---|
| 519 | {
|
---|
| 520 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
| 521 | the HAL_UART_MspInit could be implemented in the user file
|
---|
| 522 | */
|
---|
| 523 | }
|
---|
| 524 |
|
---|
| 525 | /**
|
---|
| 526 | * @brief UART MSP DeInit.
|
---|
| 527 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 528 | * the configuration information for the specified UART module.
|
---|
| 529 | * @retval None
|
---|
| 530 | */
|
---|
| 531 | __weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
|
---|
| 532 | {
|
---|
| 533 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
| 534 | the HAL_UART_MspDeInit could be implemented in the user file
|
---|
| 535 | */
|
---|
| 536 | }
|
---|
| 537 |
|
---|
| 538 | /**
|
---|
| 539 | * @}
|
---|
| 540 | */
|
---|
| 541 |
|
---|
| 542 | /** @defgroup UART_Exported_Functions_Group2 IO operation functions
|
---|
| 543 | * @brief UART Transmit and Receive functions
|
---|
| 544 | *
|
---|
| 545 | @verbatim
|
---|
| 546 | ==============================================================================
|
---|
| 547 | ##### IO operation functions #####
|
---|
| 548 | ==============================================================================
|
---|
| 549 | [..]
|
---|
| 550 | This subsection provides a set of functions allowing to manage the UART asynchronous
|
---|
| 551 | and Half duplex data transfers.
|
---|
| 552 |
|
---|
| 553 | (#) There are two modes of transfer:
|
---|
| 554 | (++) Blocking mode: The communication is performed in polling mode.
|
---|
| 555 | The HAL status of all data processing is returned by the same function
|
---|
| 556 | after finishing transfer.
|
---|
| 557 | (++) Non blocking mode: The communication is performed using Interrupts
|
---|
| 558 | or DMA, these APIs return the HAL status.
|
---|
| 559 | The end of the data processing will be indicated through the
|
---|
| 560 | dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
|
---|
| 561 | using DMA mode.
|
---|
| 562 | The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
|
---|
| 563 | will be executed respectively at the end of the transmit or receive process.
|
---|
| 564 | The HAL_UART_ErrorCallback() user callback will be executed when
|
---|
| 565 | a communication error is detected.
|
---|
| 566 |
|
---|
| 567 | (#) Blocking mode APIs are:
|
---|
| 568 | (++) HAL_UART_Transmit()
|
---|
| 569 | (++) HAL_UART_Receive()
|
---|
| 570 |
|
---|
| 571 | (#) Non Blocking mode APIs with Interrupt are:
|
---|
| 572 | (++) HAL_UART_Transmit_IT()
|
---|
| 573 | (++) HAL_UART_Receive_IT()
|
---|
| 574 | (++) HAL_UART_IRQHandler()
|
---|
| 575 |
|
---|
| 576 | (#) Non Blocking mode functions with DMA are:
|
---|
| 577 | (++) HAL_UART_Transmit_DMA()
|
---|
| 578 | (++) HAL_UART_Receive_DMA()
|
---|
| 579 |
|
---|
| 580 | (#) A set of Transfer Complete Callbacks are provided in non blocking mode:
|
---|
| 581 | (++) HAL_UART_TxCpltCallback()
|
---|
| 582 | (++) HAL_UART_RxCpltCallback()
|
---|
| 583 | (++) HAL_UART_ErrorCallback()
|
---|
| 584 |
|
---|
| 585 | [..]
|
---|
| 586 | (@) In the Half duplex communication, it is forbidden to run the transmit
|
---|
| 587 | and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX
|
---|
| 588 | can't be useful.
|
---|
| 589 |
|
---|
| 590 | @endverbatim
|
---|
| 591 | * @{
|
---|
| 592 | */
|
---|
| 593 |
|
---|
| 594 | /**
|
---|
| 595 | * @brief Sends an amount of data in blocking mode.
|
---|
| 596 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 597 | * the configuration information for the specified UART module.
|
---|
| 598 | * @param pData: Pointer to data buffer
|
---|
| 599 | * @param Size: Amount of data to be sent
|
---|
| 600 | * @param Timeout: Timeout duration
|
---|
| 601 | * @retval HAL status
|
---|
| 602 | */
|
---|
| 603 | HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 604 | {
|
---|
| 605 | uint16_t* tmp;
|
---|
| 606 | uint32_t tmp1 = 0;
|
---|
| 607 |
|
---|
| 608 | tmp1 = huart->State;
|
---|
| 609 | if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_RX))
|
---|
| 610 | {
|
---|
| 611 | if((pData == NULL ) || (Size == 0))
|
---|
| 612 | {
|
---|
| 613 | return HAL_ERROR;
|
---|
| 614 | }
|
---|
| 615 |
|
---|
| 616 | /* Process Locked */
|
---|
| 617 | __HAL_LOCK(huart);
|
---|
| 618 |
|
---|
| 619 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 620 | /* Check if a non-blocking receive process is ongoing or not */
|
---|
| 621 | if(huart->State == HAL_UART_STATE_BUSY_RX)
|
---|
| 622 | {
|
---|
| 623 | huart->State = HAL_UART_STATE_BUSY_TX_RX;
|
---|
| 624 | }
|
---|
| 625 | else
|
---|
| 626 | {
|
---|
| 627 | huart->State = HAL_UART_STATE_BUSY_TX;
|
---|
| 628 | }
|
---|
| 629 |
|
---|
| 630 | huart->TxXferSize = Size;
|
---|
| 631 | huart->TxXferCount = Size;
|
---|
| 632 | while(huart->TxXferCount > 0)
|
---|
| 633 | {
|
---|
| 634 | huart->TxXferCount--;
|
---|
| 635 | if(huart->Init.WordLength == UART_WORDLENGTH_9B)
|
---|
| 636 | {
|
---|
| 637 | if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 638 | {
|
---|
| 639 | return HAL_TIMEOUT;
|
---|
| 640 | }
|
---|
| 641 | tmp = (uint16_t*) pData;
|
---|
| 642 | huart->Instance->DR = (*tmp & (uint16_t)0x01FF);
|
---|
| 643 | if(huart->Init.Parity == UART_PARITY_NONE)
|
---|
| 644 | {
|
---|
| 645 | pData +=2;
|
---|
| 646 | }
|
---|
| 647 | else
|
---|
| 648 | {
|
---|
| 649 | pData +=1;
|
---|
| 650 | }
|
---|
| 651 | }
|
---|
| 652 | else
|
---|
| 653 | {
|
---|
| 654 | if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 655 | {
|
---|
| 656 | return HAL_TIMEOUT;
|
---|
| 657 | }
|
---|
| 658 | huart->Instance->DR = (*pData++ & (uint8_t)0xFF);
|
---|
| 659 | }
|
---|
| 660 | }
|
---|
| 661 |
|
---|
| 662 | if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, Timeout) != HAL_OK)
|
---|
| 663 | {
|
---|
| 664 | return HAL_TIMEOUT;
|
---|
| 665 | }
|
---|
| 666 |
|
---|
| 667 | /* Check if a non-blocking receive process is ongoing or not */
|
---|
| 668 | if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
|
---|
| 669 | {
|
---|
| 670 | huart->State = HAL_UART_STATE_BUSY_RX;
|
---|
| 671 | }
|
---|
| 672 | else
|
---|
| 673 | {
|
---|
| 674 | huart->State = HAL_UART_STATE_READY;
|
---|
| 675 | }
|
---|
| 676 |
|
---|
| 677 | /* Process Unlocked */
|
---|
| 678 | __HAL_UNLOCK(huart);
|
---|
| 679 |
|
---|
| 680 | return HAL_OK;
|
---|
| 681 | }
|
---|
| 682 | else
|
---|
| 683 | {
|
---|
| 684 | return HAL_BUSY;
|
---|
| 685 | }
|
---|
| 686 | }
|
---|
| 687 |
|
---|
| 688 | /**
|
---|
| 689 | * @brief Receives an amount of data in blocking mode.
|
---|
| 690 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 691 | * the configuration information for the specified UART module.
|
---|
| 692 | * @param pData: Pointer to data buffer
|
---|
| 693 | * @param Size: Amount of data to be received
|
---|
| 694 | * @param Timeout: Timeout duration
|
---|
| 695 | * @retval HAL status
|
---|
| 696 | */
|
---|
| 697 | HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 698 | {
|
---|
| 699 | uint16_t* tmp;
|
---|
| 700 | uint32_t tmp1 = 0;
|
---|
| 701 |
|
---|
| 702 | tmp1 = huart->State;
|
---|
| 703 | if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_TX))
|
---|
| 704 | {
|
---|
| 705 | if((pData == NULL ) || (Size == 0))
|
---|
| 706 | {
|
---|
| 707 | return HAL_ERROR;
|
---|
| 708 | }
|
---|
| 709 |
|
---|
| 710 | /* Process Locked */
|
---|
| 711 | __HAL_LOCK(huart);
|
---|
| 712 |
|
---|
| 713 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 714 | /* Check if a non-blocking transmit process is ongoing or not */
|
---|
| 715 | if(huart->State == HAL_UART_STATE_BUSY_TX)
|
---|
| 716 | {
|
---|
| 717 | huart->State = HAL_UART_STATE_BUSY_TX_RX;
|
---|
| 718 | }
|
---|
| 719 | else
|
---|
| 720 | {
|
---|
| 721 | huart->State = HAL_UART_STATE_BUSY_RX;
|
---|
| 722 | }
|
---|
| 723 |
|
---|
| 724 | huart->RxXferSize = Size;
|
---|
| 725 | huart->RxXferCount = Size;
|
---|
| 726 |
|
---|
| 727 | /* Check the remain data to be received */
|
---|
| 728 | while(huart->RxXferCount > 0)
|
---|
| 729 | {
|
---|
| 730 | huart->RxXferCount--;
|
---|
| 731 | if(huart->Init.WordLength == UART_WORDLENGTH_9B)
|
---|
| 732 | {
|
---|
| 733 | if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
| 734 | {
|
---|
| 735 | return HAL_TIMEOUT;
|
---|
| 736 | }
|
---|
| 737 | tmp = (uint16_t*) pData ;
|
---|
| 738 | if(huart->Init.Parity == UART_PARITY_NONE)
|
---|
| 739 | {
|
---|
| 740 | *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
|
---|
| 741 | pData +=2;
|
---|
| 742 | }
|
---|
| 743 | else
|
---|
| 744 | {
|
---|
| 745 | *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x00FF);
|
---|
| 746 | pData +=1;
|
---|
| 747 | }
|
---|
| 748 |
|
---|
| 749 | }
|
---|
| 750 | else
|
---|
| 751 | {
|
---|
| 752 | if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
| 753 | {
|
---|
| 754 | return HAL_TIMEOUT;
|
---|
| 755 | }
|
---|
| 756 | if(huart->Init.Parity == UART_PARITY_NONE)
|
---|
| 757 | {
|
---|
| 758 | *pData++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
|
---|
| 759 | }
|
---|
| 760 | else
|
---|
| 761 | {
|
---|
| 762 | *pData++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
|
---|
| 763 | }
|
---|
| 764 |
|
---|
| 765 | }
|
---|
| 766 | }
|
---|
| 767 |
|
---|
| 768 | /* Check if a non-blocking transmit process is ongoing or not */
|
---|
| 769 | if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
|
---|
| 770 | {
|
---|
| 771 | huart->State = HAL_UART_STATE_BUSY_TX;
|
---|
| 772 | }
|
---|
| 773 | else
|
---|
| 774 | {
|
---|
| 775 | huart->State = HAL_UART_STATE_READY;
|
---|
| 776 | }
|
---|
| 777 | /* Process Unlocked */
|
---|
| 778 | __HAL_UNLOCK(huart);
|
---|
| 779 |
|
---|
| 780 | return HAL_OK;
|
---|
| 781 | }
|
---|
| 782 | else
|
---|
| 783 | {
|
---|
| 784 | return HAL_BUSY;
|
---|
| 785 | }
|
---|
| 786 | }
|
---|
| 787 |
|
---|
| 788 | /**
|
---|
| 789 | * @brief Sends an amount of data in non blocking mode.
|
---|
| 790 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 791 | * the configuration information for the specified UART module.
|
---|
| 792 | * @param pData: Pointer to data buffer
|
---|
| 793 | * @param Size: Amount of data to be sent
|
---|
| 794 | * @retval HAL status
|
---|
| 795 | */
|
---|
| 796 | HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
---|
| 797 | {
|
---|
| 798 | uint32_t tmp = 0;
|
---|
| 799 |
|
---|
| 800 | tmp = huart->State;
|
---|
| 801 | if((tmp == HAL_UART_STATE_READY) || (tmp == HAL_UART_STATE_BUSY_RX))
|
---|
| 802 | {
|
---|
| 803 | if((pData == NULL ) || (Size == 0))
|
---|
| 804 | {
|
---|
| 805 | return HAL_ERROR;
|
---|
| 806 | }
|
---|
| 807 |
|
---|
| 808 | /* Process Locked */
|
---|
| 809 | __HAL_LOCK(huart);
|
---|
| 810 |
|
---|
| 811 | huart->pTxBuffPtr = pData;
|
---|
| 812 | huart->TxXferSize = Size;
|
---|
| 813 | huart->TxXferCount = Size;
|
---|
| 814 |
|
---|
| 815 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 816 | /* Check if a receive process is ongoing or not */
|
---|
| 817 | if(huart->State == HAL_UART_STATE_BUSY_RX)
|
---|
| 818 | {
|
---|
| 819 | huart->State = HAL_UART_STATE_BUSY_TX_RX;
|
---|
| 820 | }
|
---|
| 821 | else
|
---|
| 822 | {
|
---|
| 823 | huart->State = HAL_UART_STATE_BUSY_TX;
|
---|
| 824 | }
|
---|
| 825 |
|
---|
| 826 | /* Enable the UART Parity Error Interrupt */
|
---|
| 827 | __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
|
---|
| 828 |
|
---|
| 829 | /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
| 830 | __HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
|
---|
| 831 |
|
---|
| 832 | /* Process Unlocked */
|
---|
| 833 | __HAL_UNLOCK(huart);
|
---|
| 834 |
|
---|
| 835 | /* Enable the UART Transmit data register empty Interrupt */
|
---|
| 836 | __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
|
---|
| 837 |
|
---|
| 838 | return HAL_OK;
|
---|
| 839 | }
|
---|
| 840 | else
|
---|
| 841 | {
|
---|
| 842 | return HAL_BUSY;
|
---|
| 843 | }
|
---|
| 844 | }
|
---|
| 845 |
|
---|
| 846 | /**
|
---|
| 847 | * @brief Receives an amount of data in non blocking mode
|
---|
| 848 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 849 | * the configuration information for the specified UART module.
|
---|
| 850 | * @param pData: Pointer to data buffer
|
---|
| 851 | * @param Size: Amount of data to be received
|
---|
| 852 | * @retval HAL status
|
---|
| 853 | */
|
---|
| 854 | HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
---|
| 855 | {
|
---|
| 856 | uint32_t tmp = 0;
|
---|
| 857 |
|
---|
| 858 | tmp = huart->State;
|
---|
| 859 | if((tmp == HAL_UART_STATE_READY) || (tmp == HAL_UART_STATE_BUSY_TX))
|
---|
| 860 | {
|
---|
| 861 | if((pData == NULL ) || (Size == 0))
|
---|
| 862 | {
|
---|
| 863 | return HAL_ERROR;
|
---|
| 864 | }
|
---|
| 865 |
|
---|
| 866 | /* Process Locked */
|
---|
| 867 | __HAL_LOCK(huart);
|
---|
| 868 |
|
---|
| 869 | huart->pRxBuffPtr = pData;
|
---|
| 870 | huart->RxXferSize = Size;
|
---|
| 871 | huart->RxXferCount = Size;
|
---|
| 872 |
|
---|
| 873 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 874 | /* Check if a transmit process is ongoing or not */
|
---|
| 875 | if(huart->State == HAL_UART_STATE_BUSY_TX)
|
---|
| 876 | {
|
---|
| 877 | huart->State = HAL_UART_STATE_BUSY_TX_RX;
|
---|
| 878 | }
|
---|
| 879 | else
|
---|
| 880 | {
|
---|
| 881 | huart->State = HAL_UART_STATE_BUSY_RX;
|
---|
| 882 | }
|
---|
| 883 |
|
---|
| 884 | /* Enable the UART Parity Error Interrupt */
|
---|
| 885 | __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
|
---|
| 886 |
|
---|
| 887 | /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
| 888 | __HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
|
---|
| 889 |
|
---|
| 890 | /* Process Unlocked */
|
---|
| 891 | __HAL_UNLOCK(huart);
|
---|
| 892 |
|
---|
| 893 | /* Enable the UART Data Register not empty Interrupt */
|
---|
| 894 | __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
|
---|
| 895 |
|
---|
| 896 | return HAL_OK;
|
---|
| 897 | }
|
---|
| 898 | else
|
---|
| 899 | {
|
---|
| 900 | return HAL_BUSY;
|
---|
| 901 | }
|
---|
| 902 | }
|
---|
| 903 |
|
---|
| 904 | /**
|
---|
| 905 | * @brief Sends an amount of data in non blocking mode.
|
---|
| 906 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 907 | * the configuration information for the specified UART module.
|
---|
| 908 | * @param pData: Pointer to data buffer
|
---|
| 909 | * @param Size: Amount of data to be sent
|
---|
| 910 | * @retval HAL status
|
---|
| 911 | */
|
---|
| 912 | HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
---|
| 913 | {
|
---|
| 914 | uint32_t *tmp;
|
---|
| 915 | uint32_t tmp1 = 0;
|
---|
| 916 |
|
---|
| 917 | tmp1 = huart->State;
|
---|
| 918 | if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_RX))
|
---|
| 919 | {
|
---|
| 920 | if((pData == NULL ) || (Size == 0))
|
---|
| 921 | {
|
---|
| 922 | return HAL_ERROR;
|
---|
| 923 | }
|
---|
| 924 |
|
---|
| 925 | /* Process Locked */
|
---|
| 926 | __HAL_LOCK(huart);
|
---|
| 927 |
|
---|
| 928 | huart->pTxBuffPtr = pData;
|
---|
| 929 | huart->TxXferSize = Size;
|
---|
| 930 | huart->TxXferCount = Size;
|
---|
| 931 |
|
---|
| 932 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 933 | /* Check if a receive process is ongoing or not */
|
---|
| 934 | if(huart->State == HAL_UART_STATE_BUSY_RX)
|
---|
| 935 | {
|
---|
| 936 | huart->State = HAL_UART_STATE_BUSY_TX_RX;
|
---|
| 937 | }
|
---|
| 938 | else
|
---|
| 939 | {
|
---|
| 940 | huart->State = HAL_UART_STATE_BUSY_TX;
|
---|
| 941 | }
|
---|
| 942 |
|
---|
| 943 | /* Set the UART DMA transfer complete callback */
|
---|
| 944 | huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
|
---|
| 945 |
|
---|
| 946 | /* Set the UART DMA Half transfer complete callback */
|
---|
| 947 | huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
|
---|
| 948 |
|
---|
| 949 | /* Set the DMA error callback */
|
---|
| 950 | huart->hdmatx->XferErrorCallback = UART_DMAError;
|
---|
| 951 |
|
---|
| 952 | /* Enable the UART transmit DMA Stream */
|
---|
| 953 | tmp = (uint32_t*)&pData;
|
---|
| 954 | HAL_DMA_Start_IT(huart->hdmatx, *(uint32_t*)tmp, (uint32_t)&huart->Instance->DR, Size);
|
---|
| 955 |
|
---|
| 956 | /* Clear the TC flag in the SR register by writing 0 to it */
|
---|
| 957 | __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
|
---|
| 958 |
|
---|
| 959 | /* Enable the DMA transfer for transmit request by setting the DMAT bit
|
---|
| 960 | in the UART CR3 register */
|
---|
| 961 | huart->Instance->CR3 |= USART_CR3_DMAT;
|
---|
| 962 |
|
---|
| 963 | /* Process Unlocked */
|
---|
| 964 | __HAL_UNLOCK(huart);
|
---|
| 965 |
|
---|
| 966 | return HAL_OK;
|
---|
| 967 | }
|
---|
| 968 | else
|
---|
| 969 | {
|
---|
| 970 | return HAL_BUSY;
|
---|
| 971 | }
|
---|
| 972 | }
|
---|
| 973 |
|
---|
| 974 | /**
|
---|
| 975 | * @brief Receives an amount of data in non blocking mode.
|
---|
| 976 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 977 | * the configuration information for the specified UART module.
|
---|
| 978 | * @param pData: Pointer to data buffer
|
---|
| 979 | * @param Size: Amount of data to be received
|
---|
| 980 | * @note When the UART parity is enabled (PCE = 1) the data received contain the parity bit.
|
---|
| 981 | * @retval HAL status
|
---|
| 982 | */
|
---|
| 983 | HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
|
---|
| 984 | {
|
---|
| 985 | uint32_t *tmp;
|
---|
| 986 | uint32_t tmp1 = 0;
|
---|
| 987 |
|
---|
| 988 | tmp1 = huart->State;
|
---|
| 989 | if((tmp1 == HAL_UART_STATE_READY) || (tmp1 == HAL_UART_STATE_BUSY_TX))
|
---|
| 990 | {
|
---|
| 991 | if((pData == NULL ) || (Size == 0))
|
---|
| 992 | {
|
---|
| 993 | return HAL_ERROR;
|
---|
| 994 | }
|
---|
| 995 |
|
---|
| 996 | /* Process Locked */
|
---|
| 997 | __HAL_LOCK(huart);
|
---|
| 998 |
|
---|
| 999 | huart->pRxBuffPtr = pData;
|
---|
| 1000 | huart->RxXferSize = Size;
|
---|
| 1001 |
|
---|
| 1002 | huart->ErrorCode = HAL_UART_ERROR_NONE;
|
---|
| 1003 | /* Check if a transmit process is ongoing or not */
|
---|
| 1004 | if(huart->State == HAL_UART_STATE_BUSY_TX)
|
---|
| 1005 | {
|
---|
| 1006 | huart->State = HAL_UART_STATE_BUSY_TX_RX;
|
---|
| 1007 | }
|
---|
| 1008 | else
|
---|
| 1009 | {
|
---|
| 1010 | huart->State = HAL_UART_STATE_BUSY_RX;
|
---|
| 1011 | }
|
---|
| 1012 |
|
---|
| 1013 | /* Set the UART DMA transfer complete callback */
|
---|
| 1014 | huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
|
---|
| 1015 |
|
---|
| 1016 | /* Set the UART DMA Half transfer complete callback */
|
---|
| 1017 | huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
|
---|
| 1018 |
|
---|
| 1019 | /* Set the DMA error callback */
|
---|
| 1020 | huart->hdmarx->XferErrorCallback = UART_DMAError;
|
---|
| 1021 |
|
---|
| 1022 | /* Enable the DMA Stream */
|
---|
| 1023 | tmp = (uint32_t*)&pData;
|
---|
| 1024 | HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->DR, *(uint32_t*)tmp, Size);
|
---|
| 1025 |
|
---|
| 1026 | /* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
---|
| 1027 | in the UART CR3 register */
|
---|
| 1028 | huart->Instance->CR3 |= USART_CR3_DMAR;
|
---|
| 1029 |
|
---|
| 1030 | /* Process Unlocked */
|
---|
| 1031 | __HAL_UNLOCK(huart);
|
---|
| 1032 |
|
---|
| 1033 | return HAL_OK;
|
---|
| 1034 | }
|
---|
| 1035 | else
|
---|
| 1036 | {
|
---|
| 1037 | return HAL_BUSY;
|
---|
| 1038 | }
|
---|
| 1039 | }
|
---|
| 1040 |
|
---|
| 1041 | /**
|
---|
| 1042 | * @brief Pauses the DMA Transfer.
|
---|
| 1043 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1044 | * the configuration information for the specified UART module.
|
---|
| 1045 | * @retval HAL status
|
---|
| 1046 | */
|
---|
| 1047 | HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
|
---|
| 1048 | {
|
---|
| 1049 | /* Process Locked */
|
---|
| 1050 | __HAL_LOCK(huart);
|
---|
| 1051 |
|
---|
| 1052 | if(huart->State == HAL_UART_STATE_BUSY_TX)
|
---|
| 1053 | {
|
---|
| 1054 | /* Disable the UART DMA Tx request */
|
---|
| 1055 | huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
|
---|
| 1056 | }
|
---|
| 1057 | else if(huart->State == HAL_UART_STATE_BUSY_RX)
|
---|
| 1058 | {
|
---|
| 1059 | /* Disable the UART DMA Rx request */
|
---|
| 1060 | huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
|
---|
| 1061 | }
|
---|
| 1062 | else if (huart->State == HAL_UART_STATE_BUSY_TX_RX)
|
---|
| 1063 | {
|
---|
| 1064 | /* Disable the UART DMA Tx & Rx requests */
|
---|
| 1065 | huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
|
---|
| 1066 | huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
|
---|
| 1067 | }
|
---|
| 1068 |
|
---|
| 1069 | /* Process Unlocked */
|
---|
| 1070 | __HAL_UNLOCK(huart);
|
---|
| 1071 |
|
---|
| 1072 | return HAL_OK;
|
---|
| 1073 | }
|
---|
| 1074 |
|
---|
| 1075 | /**
|
---|
| 1076 | * @brief Resumes the DMA Transfer.
|
---|
| 1077 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1078 | * the configuration information for the specified UART module.
|
---|
| 1079 | * @retval HAL status
|
---|
| 1080 | */
|
---|
| 1081 | HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
|
---|
| 1082 | {
|
---|
| 1083 | /* Process Locked */
|
---|
| 1084 | __HAL_LOCK(huart);
|
---|
| 1085 |
|
---|
| 1086 | if(huart->State == HAL_UART_STATE_BUSY_TX)
|
---|
| 1087 | {
|
---|
| 1088 | /* Enable the UART DMA Tx request */
|
---|
| 1089 | huart->Instance->CR3 |= USART_CR3_DMAT;
|
---|
| 1090 | }
|
---|
| 1091 | else if(huart->State == HAL_UART_STATE_BUSY_RX)
|
---|
| 1092 | {
|
---|
| 1093 | /* Clear the Overrun flag before resuming the Rx transfer*/
|
---|
| 1094 | __HAL_UART_CLEAR_OREFLAG(huart);
|
---|
| 1095 | /* Enable the UART DMA Rx request */
|
---|
| 1096 | huart->Instance->CR3 |= USART_CR3_DMAR;
|
---|
| 1097 | }
|
---|
| 1098 | else if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
|
---|
| 1099 | {
|
---|
| 1100 | /* Clear the Overrun flag before resuming the Rx transfer*/
|
---|
| 1101 | __HAL_UART_CLEAR_OREFLAG(huart);
|
---|
| 1102 | /* Enable the UART DMA Tx & Rx request */
|
---|
| 1103 | huart->Instance->CR3 |= USART_CR3_DMAT;
|
---|
| 1104 | huart->Instance->CR3 |= USART_CR3_DMAR;
|
---|
| 1105 | }
|
---|
| 1106 |
|
---|
| 1107 | /* Process Unlocked */
|
---|
| 1108 | __HAL_UNLOCK(huart);
|
---|
| 1109 |
|
---|
| 1110 | return HAL_OK;
|
---|
| 1111 | }
|
---|
| 1112 |
|
---|
| 1113 | /**
|
---|
| 1114 | * @brief Stops the DMA Transfer.
|
---|
| 1115 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1116 | * the configuration information for the specified UART module.
|
---|
| 1117 | * @retval HAL status
|
---|
| 1118 | */
|
---|
| 1119 | HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
|
---|
| 1120 | {
|
---|
| 1121 | /* The Lock is not implemented on this API to allow the user application
|
---|
| 1122 | to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback():
|
---|
| 1123 | when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
|
---|
| 1124 | and the correspond call back is executed HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback()
|
---|
| 1125 | */
|
---|
| 1126 |
|
---|
| 1127 | /* Disable the UART Tx/Rx DMA requests */
|
---|
| 1128 | huart->Instance->CR3 &= ~USART_CR3_DMAT;
|
---|
| 1129 | huart->Instance->CR3 &= ~USART_CR3_DMAR;
|
---|
| 1130 |
|
---|
| 1131 | /* Abort the UART DMA tx Stream */
|
---|
| 1132 | if(huart->hdmatx != NULL)
|
---|
| 1133 | {
|
---|
| 1134 | HAL_DMA_Abort(huart->hdmatx);
|
---|
| 1135 | }
|
---|
| 1136 | /* Abort the UART DMA rx Stream */
|
---|
| 1137 | if(huart->hdmarx != NULL)
|
---|
| 1138 | {
|
---|
| 1139 | HAL_DMA_Abort(huart->hdmarx);
|
---|
| 1140 | }
|
---|
| 1141 |
|
---|
| 1142 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1143 |
|
---|
| 1144 | return HAL_OK;
|
---|
| 1145 | }
|
---|
| 1146 |
|
---|
| 1147 | /**
|
---|
| 1148 | * @brief This function handles UART interrupt request.
|
---|
| 1149 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1150 | * the configuration information for the specified UART module.
|
---|
| 1151 | * @retval None
|
---|
| 1152 | */
|
---|
| 1153 | void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
|
---|
| 1154 | {
|
---|
| 1155 | uint32_t tmp1 = 0, tmp2 = 0;
|
---|
| 1156 |
|
---|
| 1157 | tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_PE);
|
---|
| 1158 | tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_PE);
|
---|
| 1159 | /* UART parity error interrupt occurred ------------------------------------*/
|
---|
| 1160 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
| 1161 | {
|
---|
| 1162 | __HAL_UART_CLEAR_PEFLAG(huart);
|
---|
| 1163 |
|
---|
| 1164 | huart->ErrorCode |= HAL_UART_ERROR_PE;
|
---|
| 1165 | }
|
---|
| 1166 |
|
---|
| 1167 | tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_FE);
|
---|
| 1168 | tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR);
|
---|
| 1169 | /* UART frame error interrupt occurred -------------------------------------*/
|
---|
| 1170 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
| 1171 | {
|
---|
| 1172 | __HAL_UART_CLEAR_FEFLAG(huart);
|
---|
| 1173 |
|
---|
| 1174 | huart->ErrorCode |= HAL_UART_ERROR_FE;
|
---|
| 1175 | }
|
---|
| 1176 |
|
---|
| 1177 | tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_NE);
|
---|
| 1178 | tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR);
|
---|
| 1179 | /* UART noise error interrupt occurred -------------------------------------*/
|
---|
| 1180 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
| 1181 | {
|
---|
| 1182 | __HAL_UART_CLEAR_NEFLAG(huart);
|
---|
| 1183 |
|
---|
| 1184 | huart->ErrorCode |= HAL_UART_ERROR_NE;
|
---|
| 1185 | }
|
---|
| 1186 |
|
---|
| 1187 | tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_ORE);
|
---|
| 1188 | tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR);
|
---|
| 1189 | /* UART Over-Run interrupt occurred ----------------------------------------*/
|
---|
| 1190 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
| 1191 | {
|
---|
| 1192 | __HAL_UART_CLEAR_OREFLAG(huart);
|
---|
| 1193 |
|
---|
| 1194 | huart->ErrorCode |= HAL_UART_ERROR_ORE;
|
---|
| 1195 | }
|
---|
| 1196 |
|
---|
| 1197 | tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE);
|
---|
| 1198 | tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE);
|
---|
| 1199 | /* UART in mode Receiver ---------------------------------------------------*/
|
---|
| 1200 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
| 1201 | {
|
---|
| 1202 | UART_Receive_IT(huart);
|
---|
| 1203 | }
|
---|
| 1204 |
|
---|
| 1205 | tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_TXE);
|
---|
| 1206 | tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE);
|
---|
| 1207 | /* UART in mode Transmitter ------------------------------------------------*/
|
---|
| 1208 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
| 1209 | {
|
---|
| 1210 | UART_Transmit_IT(huart);
|
---|
| 1211 | }
|
---|
| 1212 |
|
---|
| 1213 | tmp1 = __HAL_UART_GET_FLAG(huart, UART_FLAG_TC);
|
---|
| 1214 | tmp2 = __HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC);
|
---|
| 1215 | /* UART in mode Transmitter end --------------------------------------------*/
|
---|
| 1216 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
| 1217 | {
|
---|
| 1218 | UART_EndTransmit_IT(huart);
|
---|
| 1219 | }
|
---|
| 1220 |
|
---|
| 1221 | if(huart->ErrorCode != HAL_UART_ERROR_NONE)
|
---|
| 1222 | {
|
---|
| 1223 | /* Set the UART state ready to be able to start again the process */
|
---|
| 1224 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1225 |
|
---|
| 1226 | HAL_UART_ErrorCallback(huart);
|
---|
| 1227 | }
|
---|
| 1228 | }
|
---|
| 1229 |
|
---|
| 1230 | /**
|
---|
| 1231 | * @brief Tx Transfer completed callbacks.
|
---|
| 1232 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1233 | * the configuration information for the specified UART module.
|
---|
| 1234 | * @retval None
|
---|
| 1235 | */
|
---|
| 1236 | __weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
|
---|
| 1237 | {
|
---|
| 1238 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
| 1239 | the HAL_UART_TxCpltCallback could be implemented in the user file
|
---|
| 1240 | */
|
---|
| 1241 | }
|
---|
| 1242 |
|
---|
| 1243 | /**
|
---|
| 1244 | * @brief Tx Half Transfer completed callbacks.
|
---|
| 1245 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1246 | * the configuration information for the specified UART module.
|
---|
| 1247 | * @retval None
|
---|
| 1248 | */
|
---|
| 1249 | __weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
|
---|
| 1250 | {
|
---|
| 1251 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
| 1252 | the HAL_UART_TxCpltCallback could be implemented in the user file
|
---|
| 1253 | */
|
---|
| 1254 | }
|
---|
| 1255 |
|
---|
| 1256 | /**
|
---|
| 1257 | * @brief Rx Transfer completed callbacks.
|
---|
| 1258 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1259 | * the configuration information for the specified UART module.
|
---|
| 1260 | * @retval None
|
---|
| 1261 | */
|
---|
| 1262 | __weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
|
---|
| 1263 | {
|
---|
| 1264 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
| 1265 | the HAL_UART_TxCpltCallback could be implemented in the user file
|
---|
| 1266 | */
|
---|
| 1267 | }
|
---|
| 1268 |
|
---|
| 1269 | /**
|
---|
| 1270 | * @brief Rx Half Transfer completed callbacks.
|
---|
| 1271 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1272 | * the configuration information for the specified UART module.
|
---|
| 1273 | * @retval None
|
---|
| 1274 | */
|
---|
| 1275 | __weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
|
---|
| 1276 | {
|
---|
| 1277 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
| 1278 | the HAL_UART_TxCpltCallback could be implemented in the user file
|
---|
| 1279 | */
|
---|
| 1280 | }
|
---|
| 1281 |
|
---|
| 1282 | /**
|
---|
| 1283 | * @brief UART error callbacks.
|
---|
| 1284 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1285 | * the configuration information for the specified UART module.
|
---|
| 1286 | * @retval None
|
---|
| 1287 | */
|
---|
| 1288 | __weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
|
---|
| 1289 | {
|
---|
| 1290 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
| 1291 | the HAL_UART_ErrorCallback could be implemented in the user file
|
---|
| 1292 | */
|
---|
| 1293 | }
|
---|
| 1294 |
|
---|
| 1295 | /**
|
---|
| 1296 | * @}
|
---|
| 1297 | */
|
---|
| 1298 |
|
---|
| 1299 | /** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
|
---|
| 1300 | * @brief UART control functions
|
---|
| 1301 | *
|
---|
| 1302 | @verbatim
|
---|
| 1303 | ==============================================================================
|
---|
| 1304 | ##### Peripheral Control functions #####
|
---|
| 1305 | ==============================================================================
|
---|
| 1306 | [..]
|
---|
| 1307 | This subsection provides a set of functions allowing to control the UART:
|
---|
| 1308 | (+) HAL_LIN_SendBreak() API can be helpful to transmit the break character.
|
---|
| 1309 | (+) HAL_MultiProcessor_EnterMuteMode() API can be helpful to enter the UART in mute mode.
|
---|
| 1310 | (+) HAL_MultiProcessor_ExitMuteMode() API can be helpful to exit the UART mute mode by software.
|
---|
| 1311 |
|
---|
| 1312 | @endverbatim
|
---|
| 1313 | * @{
|
---|
| 1314 | */
|
---|
| 1315 |
|
---|
| 1316 | /**
|
---|
| 1317 | * @brief Transmits break characters.
|
---|
| 1318 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1319 | * the configuration information for the specified UART module.
|
---|
| 1320 | * @retval HAL status
|
---|
| 1321 | */
|
---|
| 1322 | HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
|
---|
| 1323 | {
|
---|
| 1324 | /* Check the parameters */
|
---|
| 1325 | assert_param(IS_UART_INSTANCE(huart->Instance));
|
---|
| 1326 |
|
---|
| 1327 | /* Process Locked */
|
---|
| 1328 | __HAL_LOCK(huart);
|
---|
| 1329 |
|
---|
| 1330 | huart->State = HAL_UART_STATE_BUSY;
|
---|
| 1331 |
|
---|
| 1332 | /* Send break characters */
|
---|
| 1333 | huart->Instance->CR1 |= USART_CR1_SBK;
|
---|
| 1334 |
|
---|
| 1335 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1336 |
|
---|
| 1337 | /* Process Unlocked */
|
---|
| 1338 | __HAL_UNLOCK(huart);
|
---|
| 1339 |
|
---|
| 1340 | return HAL_OK;
|
---|
| 1341 | }
|
---|
| 1342 |
|
---|
| 1343 | /**
|
---|
| 1344 | * @brief Enters the UART in mute mode.
|
---|
| 1345 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1346 | * the configuration information for the specified UART module.
|
---|
| 1347 | * @retval HAL status
|
---|
| 1348 | */
|
---|
| 1349 | HAL_StatusTypeDef HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
|
---|
| 1350 | {
|
---|
| 1351 | /* Check the parameters */
|
---|
| 1352 | assert_param(IS_UART_INSTANCE(huart->Instance));
|
---|
| 1353 |
|
---|
| 1354 | /* Process Locked */
|
---|
| 1355 | __HAL_LOCK(huart);
|
---|
| 1356 |
|
---|
| 1357 | huart->State = HAL_UART_STATE_BUSY;
|
---|
| 1358 |
|
---|
| 1359 | /* Enable the USART mute mode by setting the RWU bit in the CR1 register */
|
---|
| 1360 | huart->Instance->CR1 |= USART_CR1_RWU;
|
---|
| 1361 |
|
---|
| 1362 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1363 |
|
---|
| 1364 | /* Process Unlocked */
|
---|
| 1365 | __HAL_UNLOCK(huart);
|
---|
| 1366 |
|
---|
| 1367 | return HAL_OK;
|
---|
| 1368 | }
|
---|
| 1369 |
|
---|
| 1370 | /**
|
---|
| 1371 | * @brief Exits the UART mute mode: wake up software.
|
---|
| 1372 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1373 | * the configuration information for the specified UART module.
|
---|
| 1374 | * @retval HAL status
|
---|
| 1375 | */
|
---|
| 1376 | HAL_StatusTypeDef HAL_MultiProcessor_ExitMuteMode(UART_HandleTypeDef *huart)
|
---|
| 1377 | {
|
---|
| 1378 | /* Check the parameters */
|
---|
| 1379 | assert_param(IS_UART_INSTANCE(huart->Instance));
|
---|
| 1380 |
|
---|
| 1381 | /* Process Locked */
|
---|
| 1382 | __HAL_LOCK(huart);
|
---|
| 1383 |
|
---|
| 1384 | huart->State = HAL_UART_STATE_BUSY;
|
---|
| 1385 |
|
---|
| 1386 | /* Disable the USART mute mode by clearing the RWU bit in the CR1 register */
|
---|
| 1387 | huart->Instance->CR1 &= (uint32_t)~((uint32_t)USART_CR1_RWU);
|
---|
| 1388 |
|
---|
| 1389 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1390 |
|
---|
| 1391 | /* Process Unlocked */
|
---|
| 1392 | __HAL_UNLOCK(huart);
|
---|
| 1393 |
|
---|
| 1394 | return HAL_OK;
|
---|
| 1395 | }
|
---|
| 1396 |
|
---|
| 1397 | /**
|
---|
| 1398 | * @brief Enables the UART transmitter and disables the UART receiver.
|
---|
| 1399 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1400 | * the configuration information for the specified UART module.
|
---|
| 1401 | * @retval HAL status
|
---|
| 1402 | */
|
---|
| 1403 | HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
|
---|
| 1404 | {
|
---|
| 1405 | uint32_t tmpreg = 0x00;
|
---|
| 1406 |
|
---|
| 1407 | /* Process Locked */
|
---|
| 1408 | __HAL_LOCK(huart);
|
---|
| 1409 |
|
---|
| 1410 | huart->State = HAL_UART_STATE_BUSY;
|
---|
| 1411 |
|
---|
| 1412 | /*-------------------------- USART CR1 Configuration -----------------------*/
|
---|
| 1413 | tmpreg = huart->Instance->CR1;
|
---|
| 1414 |
|
---|
| 1415 | /* Clear TE and RE bits */
|
---|
| 1416 | tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
|
---|
| 1417 |
|
---|
| 1418 | /* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
|
---|
| 1419 | tmpreg |= (uint32_t)USART_CR1_TE;
|
---|
| 1420 |
|
---|
| 1421 | /* Write to USART CR1 */
|
---|
| 1422 | huart->Instance->CR1 = (uint32_t)tmpreg;
|
---|
| 1423 |
|
---|
| 1424 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1425 |
|
---|
| 1426 | /* Process Unlocked */
|
---|
| 1427 | __HAL_UNLOCK(huart);
|
---|
| 1428 |
|
---|
| 1429 | return HAL_OK;
|
---|
| 1430 | }
|
---|
| 1431 |
|
---|
| 1432 | /**
|
---|
| 1433 | * @brief Enables the UART receiver and disables the UART transmitter.
|
---|
| 1434 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1435 | * the configuration information for the specified UART module.
|
---|
| 1436 | * @retval HAL status
|
---|
| 1437 | */
|
---|
| 1438 | HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
|
---|
| 1439 | {
|
---|
| 1440 | uint32_t tmpreg = 0x00;
|
---|
| 1441 |
|
---|
| 1442 | /* Process Locked */
|
---|
| 1443 | __HAL_LOCK(huart);
|
---|
| 1444 |
|
---|
| 1445 | huart->State = HAL_UART_STATE_BUSY;
|
---|
| 1446 |
|
---|
| 1447 | /*-------------------------- USART CR1 Configuration -----------------------*/
|
---|
| 1448 | tmpreg = huart->Instance->CR1;
|
---|
| 1449 |
|
---|
| 1450 | /* Clear TE and RE bits */
|
---|
| 1451 | tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
|
---|
| 1452 |
|
---|
| 1453 | /* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
|
---|
| 1454 | tmpreg |= (uint32_t)USART_CR1_RE;
|
---|
| 1455 |
|
---|
| 1456 | /* Write to USART CR1 */
|
---|
| 1457 | huart->Instance->CR1 = (uint32_t)tmpreg;
|
---|
| 1458 |
|
---|
| 1459 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1460 |
|
---|
| 1461 | /* Process Unlocked */
|
---|
| 1462 | __HAL_UNLOCK(huart);
|
---|
| 1463 |
|
---|
| 1464 | return HAL_OK;
|
---|
| 1465 | }
|
---|
| 1466 |
|
---|
| 1467 | /**
|
---|
| 1468 | * @}
|
---|
| 1469 | */
|
---|
| 1470 |
|
---|
| 1471 | /** @defgroup UART_Exported_Functions_Group4 Peripheral State and Errors functions
|
---|
| 1472 | * @brief UART State and Errors functions
|
---|
| 1473 | *
|
---|
| 1474 | @verbatim
|
---|
| 1475 | ==============================================================================
|
---|
| 1476 | ##### Peripheral State and Errors functions #####
|
---|
| 1477 | ==============================================================================
|
---|
| 1478 | [..]
|
---|
| 1479 | This subsection provides a set of functions allowing to return the State of
|
---|
| 1480 | UART communication process, return Peripheral Errors occurred during communication
|
---|
| 1481 | process
|
---|
| 1482 | (+) HAL_UART_GetState() API can be helpful to check in run-time the state of the UART peripheral.
|
---|
| 1483 | (+) HAL_UART_GetError() check in run-time errors that could be occurred during communication.
|
---|
| 1484 |
|
---|
| 1485 | @endverbatim
|
---|
| 1486 | * @{
|
---|
| 1487 | */
|
---|
| 1488 |
|
---|
| 1489 | /**
|
---|
| 1490 | * @brief Returns the UART state.
|
---|
| 1491 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1492 | * the configuration information for the specified UART module.
|
---|
| 1493 | * @retval HAL state
|
---|
| 1494 | */
|
---|
| 1495 | HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
|
---|
| 1496 | {
|
---|
| 1497 | return huart->State;
|
---|
| 1498 | }
|
---|
| 1499 |
|
---|
| 1500 | /**
|
---|
| 1501 | * @brief Return the UART error code
|
---|
| 1502 | * @param huart : pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1503 | * the configuration information for the specified UART.
|
---|
| 1504 | * @retval UART Error Code
|
---|
| 1505 | */
|
---|
| 1506 | uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
|
---|
| 1507 | {
|
---|
| 1508 | return huart->ErrorCode;
|
---|
| 1509 | }
|
---|
| 1510 |
|
---|
| 1511 | /**
|
---|
| 1512 | * @}
|
---|
| 1513 | */
|
---|
| 1514 |
|
---|
| 1515 | /**
|
---|
| 1516 | * @brief DMA UART transmit process complete callback.
|
---|
| 1517 | * @param hdma: DMA handle
|
---|
| 1518 | * @retval None
|
---|
| 1519 | */
|
---|
| 1520 | static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
|
---|
| 1521 | {
|
---|
| 1522 | UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
---|
| 1523 | /* DMA Normal mode*/
|
---|
| 1524 | if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
|
---|
| 1525 | {
|
---|
| 1526 | huart->TxXferCount = 0;
|
---|
| 1527 |
|
---|
| 1528 | /* Disable the DMA transfer for transmit request by setting the DMAT bit
|
---|
| 1529 | in the UART CR3 register */
|
---|
| 1530 | huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
|
---|
| 1531 |
|
---|
| 1532 | /* Enable the UART Transmit Complete Interrupt */
|
---|
| 1533 | __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
|
---|
| 1534 | }
|
---|
| 1535 | /* DMA Circular mode */
|
---|
| 1536 | else
|
---|
| 1537 | {
|
---|
| 1538 | HAL_UART_TxCpltCallback(huart);
|
---|
| 1539 | }
|
---|
| 1540 | }
|
---|
| 1541 |
|
---|
| 1542 | /**
|
---|
| 1543 | * @brief DMA UART transmit process half complete callback
|
---|
| 1544 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
|
---|
| 1545 | * the configuration information for the specified DMA module.
|
---|
| 1546 | * @retval None
|
---|
| 1547 | */
|
---|
| 1548 | static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
|
---|
| 1549 | {
|
---|
| 1550 | UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 1551 |
|
---|
| 1552 | HAL_UART_TxHalfCpltCallback(huart);
|
---|
| 1553 | }
|
---|
| 1554 |
|
---|
| 1555 | /**
|
---|
| 1556 | * @brief DMA UART receive process complete callback.
|
---|
| 1557 | * @param hdma: DMA handle
|
---|
| 1558 | * @retval None
|
---|
| 1559 | */
|
---|
| 1560 | static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
|
---|
| 1561 | {
|
---|
| 1562 | UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
---|
| 1563 | /* DMA Normal mode*/
|
---|
| 1564 | if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
|
---|
| 1565 | {
|
---|
| 1566 | huart->RxXferCount = 0;
|
---|
| 1567 |
|
---|
| 1568 | /* Disable the DMA transfer for the receiver request by setting the DMAR bit
|
---|
| 1569 | in the UART CR3 register */
|
---|
| 1570 | huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
|
---|
| 1571 |
|
---|
| 1572 | /* Check if a transmit process is ongoing or not */
|
---|
| 1573 | if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
|
---|
| 1574 | {
|
---|
| 1575 | huart->State = HAL_UART_STATE_BUSY_TX;
|
---|
| 1576 | }
|
---|
| 1577 | else
|
---|
| 1578 | {
|
---|
| 1579 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1580 | }
|
---|
| 1581 | }
|
---|
| 1582 | HAL_UART_RxCpltCallback(huart);
|
---|
| 1583 | }
|
---|
| 1584 |
|
---|
| 1585 | /**
|
---|
| 1586 | * @brief DMA UART receive process half complete callback
|
---|
| 1587 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
|
---|
| 1588 | * the configuration information for the specified DMA module.
|
---|
| 1589 | * @retval None
|
---|
| 1590 | */
|
---|
| 1591 | static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
|
---|
| 1592 | {
|
---|
| 1593 | UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 1594 |
|
---|
| 1595 | HAL_UART_RxHalfCpltCallback(huart);
|
---|
| 1596 | }
|
---|
| 1597 |
|
---|
| 1598 | /**
|
---|
| 1599 | * @brief DMA UART communication error callback.
|
---|
| 1600 | * @param hdma: DMA handle
|
---|
| 1601 | * @retval None
|
---|
| 1602 | */
|
---|
| 1603 | static void UART_DMAError(DMA_HandleTypeDef *hdma)
|
---|
| 1604 | {
|
---|
| 1605 | UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
---|
| 1606 | huart->RxXferCount = 0;
|
---|
| 1607 | huart->TxXferCount = 0;
|
---|
| 1608 | huart->State= HAL_UART_STATE_READY;
|
---|
| 1609 | huart->ErrorCode |= HAL_UART_ERROR_DMA;
|
---|
| 1610 | HAL_UART_ErrorCallback(huart);
|
---|
| 1611 | }
|
---|
| 1612 |
|
---|
| 1613 | /**
|
---|
| 1614 | * @brief This function handles UART Communication Timeout.
|
---|
| 1615 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1616 | * the configuration information for the specified UART module.
|
---|
| 1617 | * @param Flag: specifies the UART flag to check.
|
---|
| 1618 | * @param Status: The new Flag status (SET or RESET).
|
---|
| 1619 | * @param Timeout: Timeout duration
|
---|
| 1620 | * @retval HAL status
|
---|
| 1621 | */
|
---|
| 1622 | static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
|
---|
| 1623 | {
|
---|
| 1624 | uint32_t tickstart = 0;
|
---|
| 1625 |
|
---|
| 1626 | /* Get tick */
|
---|
| 1627 | tickstart = HAL_GetTick();
|
---|
| 1628 |
|
---|
| 1629 | /* Wait until flag is set */
|
---|
| 1630 | if(Status == RESET)
|
---|
| 1631 | {
|
---|
| 1632 | while(__HAL_UART_GET_FLAG(huart, Flag) == RESET)
|
---|
| 1633 | {
|
---|
| 1634 | /* Check for the Timeout */
|
---|
| 1635 | if(Timeout != HAL_MAX_DELAY)
|
---|
| 1636 | {
|
---|
| 1637 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
| 1638 | {
|
---|
| 1639 | /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
|
---|
| 1640 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
|
---|
| 1641 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
|
---|
| 1642 | __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
|
---|
| 1643 | __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
|
---|
| 1644 |
|
---|
| 1645 | huart->State= HAL_UART_STATE_READY;
|
---|
| 1646 |
|
---|
| 1647 | /* Process Unlocked */
|
---|
| 1648 | __HAL_UNLOCK(huart);
|
---|
| 1649 |
|
---|
| 1650 | return HAL_TIMEOUT;
|
---|
| 1651 | }
|
---|
| 1652 | }
|
---|
| 1653 | }
|
---|
| 1654 | }
|
---|
| 1655 | else
|
---|
| 1656 | {
|
---|
| 1657 | while(__HAL_UART_GET_FLAG(huart, Flag) != RESET)
|
---|
| 1658 | {
|
---|
| 1659 | /* Check for the Timeout */
|
---|
| 1660 | if(Timeout != HAL_MAX_DELAY)
|
---|
| 1661 | {
|
---|
| 1662 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
| 1663 | {
|
---|
| 1664 | /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
|
---|
| 1665 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
|
---|
| 1666 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
|
---|
| 1667 | __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
|
---|
| 1668 | __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
|
---|
| 1669 |
|
---|
| 1670 | huart->State= HAL_UART_STATE_READY;
|
---|
| 1671 |
|
---|
| 1672 | /* Process Unlocked */
|
---|
| 1673 | __HAL_UNLOCK(huart);
|
---|
| 1674 |
|
---|
| 1675 | return HAL_TIMEOUT;
|
---|
| 1676 | }
|
---|
| 1677 | }
|
---|
| 1678 | }
|
---|
| 1679 | }
|
---|
| 1680 | return HAL_OK;
|
---|
| 1681 | }
|
---|
| 1682 |
|
---|
| 1683 | /**
|
---|
| 1684 | * @brief Sends an amount of data in non blocking mode.
|
---|
| 1685 | * @param huart: Pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1686 | * the configuration information for the specified UART module.
|
---|
| 1687 | * @retval HAL status
|
---|
| 1688 | */
|
---|
| 1689 | static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
|
---|
| 1690 | {
|
---|
| 1691 | uint16_t* tmp;
|
---|
| 1692 | uint32_t tmp1 = 0;
|
---|
| 1693 |
|
---|
| 1694 | tmp1 = huart->State;
|
---|
| 1695 | if((tmp1 == HAL_UART_STATE_BUSY_TX) || (tmp1 == HAL_UART_STATE_BUSY_TX_RX))
|
---|
| 1696 | {
|
---|
| 1697 | if(huart->Init.WordLength == UART_WORDLENGTH_9B)
|
---|
| 1698 | {
|
---|
| 1699 | tmp = (uint16_t*) huart->pTxBuffPtr;
|
---|
| 1700 | huart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
|
---|
| 1701 | if(huart->Init.Parity == UART_PARITY_NONE)
|
---|
| 1702 | {
|
---|
| 1703 | huart->pTxBuffPtr += 2;
|
---|
| 1704 | }
|
---|
| 1705 | else
|
---|
| 1706 | {
|
---|
| 1707 | huart->pTxBuffPtr += 1;
|
---|
| 1708 | }
|
---|
| 1709 | }
|
---|
| 1710 | else
|
---|
| 1711 | {
|
---|
| 1712 | huart->Instance->DR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF);
|
---|
| 1713 | }
|
---|
| 1714 |
|
---|
| 1715 | if(--huart->TxXferCount == 0)
|
---|
| 1716 | {
|
---|
| 1717 | /* Disable the UART Transmit Complete Interrupt */
|
---|
| 1718 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
|
---|
| 1719 |
|
---|
| 1720 | /* Enable the UART Transmit Complete Interrupt */
|
---|
| 1721 | __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
|
---|
| 1722 | }
|
---|
| 1723 | return HAL_OK;
|
---|
| 1724 | }
|
---|
| 1725 | else
|
---|
| 1726 | {
|
---|
| 1727 | return HAL_BUSY;
|
---|
| 1728 | }
|
---|
| 1729 | }
|
---|
| 1730 |
|
---|
| 1731 |
|
---|
| 1732 | /**
|
---|
| 1733 | * @brief Wraps up transmission in non blocking mode.
|
---|
| 1734 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1735 | * the configuration information for the specified UART module.
|
---|
| 1736 | * @retval HAL status
|
---|
| 1737 | */
|
---|
| 1738 | static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
|
---|
| 1739 | {
|
---|
| 1740 | /* Disable the UART Transmit Complete Interrupt */
|
---|
| 1741 | __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
|
---|
| 1742 |
|
---|
| 1743 | /* Check if a receive process is ongoing or not */
|
---|
| 1744 | if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
|
---|
| 1745 | {
|
---|
| 1746 | huart->State = HAL_UART_STATE_BUSY_RX;
|
---|
| 1747 | }
|
---|
| 1748 | else
|
---|
| 1749 | {
|
---|
| 1750 | /* Disable the UART Parity Error Interrupt */
|
---|
| 1751 | __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
|
---|
| 1752 |
|
---|
| 1753 | /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
| 1754 | __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
|
---|
| 1755 |
|
---|
| 1756 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1757 | }
|
---|
| 1758 |
|
---|
| 1759 | HAL_UART_TxCpltCallback(huart);
|
---|
| 1760 |
|
---|
| 1761 | return HAL_OK;
|
---|
| 1762 | }
|
---|
| 1763 |
|
---|
| 1764 | /**
|
---|
| 1765 | * @brief Receives an amount of data in non blocking mode
|
---|
| 1766 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1767 | * the configuration information for the specified UART module.
|
---|
| 1768 | * @retval HAL status
|
---|
| 1769 | */
|
---|
| 1770 | static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
|
---|
| 1771 | {
|
---|
| 1772 | uint16_t* tmp;
|
---|
| 1773 | uint32_t tmp1 = 0;
|
---|
| 1774 |
|
---|
| 1775 | tmp1 = huart->State;
|
---|
| 1776 | if((tmp1 == HAL_UART_STATE_BUSY_RX) || (tmp1 == HAL_UART_STATE_BUSY_TX_RX))
|
---|
| 1777 | {
|
---|
| 1778 | if(huart->Init.WordLength == UART_WORDLENGTH_9B)
|
---|
| 1779 | {
|
---|
| 1780 | tmp = (uint16_t*) huart->pRxBuffPtr;
|
---|
| 1781 | if(huart->Init.Parity == UART_PARITY_NONE)
|
---|
| 1782 | {
|
---|
| 1783 | *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
|
---|
| 1784 | huart->pRxBuffPtr += 2;
|
---|
| 1785 | }
|
---|
| 1786 | else
|
---|
| 1787 | {
|
---|
| 1788 | *tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x00FF);
|
---|
| 1789 | huart->pRxBuffPtr += 1;
|
---|
| 1790 | }
|
---|
| 1791 | }
|
---|
| 1792 | else
|
---|
| 1793 | {
|
---|
| 1794 | if(huart->Init.Parity == UART_PARITY_NONE)
|
---|
| 1795 | {
|
---|
| 1796 | *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
|
---|
| 1797 | }
|
---|
| 1798 | else
|
---|
| 1799 | {
|
---|
| 1800 | *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
|
---|
| 1801 | }
|
---|
| 1802 | }
|
---|
| 1803 |
|
---|
| 1804 | if(--huart->RxXferCount == 0)
|
---|
| 1805 | {
|
---|
| 1806 | __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
|
---|
| 1807 |
|
---|
| 1808 | /* Check if a transmit process is ongoing or not */
|
---|
| 1809 | if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
|
---|
| 1810 | {
|
---|
| 1811 | huart->State = HAL_UART_STATE_BUSY_TX;
|
---|
| 1812 | }
|
---|
| 1813 | else
|
---|
| 1814 | {
|
---|
| 1815 | /* Disable the UART Parity Error Interrupt */
|
---|
| 1816 | __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
|
---|
| 1817 |
|
---|
| 1818 | /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
| 1819 | __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
|
---|
| 1820 |
|
---|
| 1821 | huart->State = HAL_UART_STATE_READY;
|
---|
| 1822 | }
|
---|
| 1823 | HAL_UART_RxCpltCallback(huart);
|
---|
| 1824 |
|
---|
| 1825 | return HAL_OK;
|
---|
| 1826 | }
|
---|
| 1827 | return HAL_OK;
|
---|
| 1828 | }
|
---|
| 1829 | else
|
---|
| 1830 | {
|
---|
| 1831 | return HAL_BUSY;
|
---|
| 1832 | }
|
---|
| 1833 | }
|
---|
| 1834 |
|
---|
| 1835 | /**
|
---|
| 1836 | * @brief Configures the UART peripheral.
|
---|
| 1837 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
|
---|
| 1838 | * the configuration information for the specified UART module.
|
---|
| 1839 | * @retval None
|
---|
| 1840 | */
|
---|
| 1841 | static void UART_SetConfig(UART_HandleTypeDef *huart)
|
---|
| 1842 | {
|
---|
| 1843 | uint32_t tmpreg = 0x00;
|
---|
| 1844 |
|
---|
| 1845 | /* Check the parameters */
|
---|
| 1846 | assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
|
---|
| 1847 | assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
|
---|
| 1848 | assert_param(IS_UART_PARITY(huart->Init.Parity));
|
---|
| 1849 | assert_param(IS_UART_MODE(huart->Init.Mode));
|
---|
| 1850 |
|
---|
| 1851 | /*-------------------------- USART CR2 Configuration -----------------------*/
|
---|
| 1852 | tmpreg = huart->Instance->CR2;
|
---|
| 1853 |
|
---|
| 1854 | /* Clear STOP[13:12] bits */
|
---|
| 1855 | tmpreg &= (uint32_t)~((uint32_t)USART_CR2_STOP);
|
---|
| 1856 |
|
---|
| 1857 | /* Configure the UART Stop Bits: Set STOP[13:12] bits according to huart->Init.StopBits value */
|
---|
| 1858 | tmpreg |= (uint32_t)huart->Init.StopBits;
|
---|
| 1859 |
|
---|
| 1860 | /* Write to USART CR2 */
|
---|
| 1861 | huart->Instance->CR2 = (uint32_t)tmpreg;
|
---|
| 1862 |
|
---|
| 1863 | /*-------------------------- USART CR1 Configuration -----------------------*/
|
---|
| 1864 | tmpreg = huart->Instance->CR1;
|
---|
| 1865 |
|
---|
| 1866 | /* Clear M, PCE, PS, TE and RE bits */
|
---|
| 1867 | tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \
|
---|
| 1868 | USART_CR1_RE | USART_CR1_OVER8));
|
---|
| 1869 |
|
---|
| 1870 | /* Configure the UART Word Length, Parity and mode:
|
---|
| 1871 | Set the M bits according to huart->Init.WordLength value
|
---|
| 1872 | Set PCE and PS bits according to huart->Init.Parity value
|
---|
| 1873 | Set TE and RE bits according to huart->Init.Mode value
|
---|
| 1874 | Set OVER8 bit according to huart->Init.OverSampling value */
|
---|
| 1875 | tmpreg |= (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling;
|
---|
| 1876 |
|
---|
| 1877 | /* Write to USART CR1 */
|
---|
| 1878 | huart->Instance->CR1 = (uint32_t)tmpreg;
|
---|
| 1879 |
|
---|
| 1880 | /*-------------------------- USART CR3 Configuration -----------------------*/
|
---|
| 1881 | tmpreg = huart->Instance->CR3;
|
---|
| 1882 |
|
---|
| 1883 | /* Clear CTSE and RTSE bits */
|
---|
| 1884 | tmpreg &= (uint32_t)~((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE));
|
---|
| 1885 |
|
---|
| 1886 | /* Configure the UART HFC: Set CTSE and RTSE bits according to huart->Init.HwFlowCtl value */
|
---|
| 1887 | tmpreg |= huart->Init.HwFlowCtl;
|
---|
| 1888 |
|
---|
| 1889 | /* Write to USART CR3 */
|
---|
| 1890 | huart->Instance->CR3 = (uint32_t)tmpreg;
|
---|
| 1891 |
|
---|
| 1892 | /* Check the Over Sampling */
|
---|
| 1893 | if(huart->Init.OverSampling == UART_OVERSAMPLING_8)
|
---|
| 1894 | {
|
---|
| 1895 | /*-------------------------- USART BRR Configuration ---------------------*/
|
---|
| 1896 | if((huart->Instance == USART1) || (huart->Instance == USART6))
|
---|
| 1897 | {
|
---|
| 1898 | huart->Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
|
---|
| 1899 | }
|
---|
| 1900 | else
|
---|
| 1901 | {
|
---|
| 1902 | huart->Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate);
|
---|
| 1903 | }
|
---|
| 1904 | }
|
---|
| 1905 | else
|
---|
| 1906 | {
|
---|
| 1907 | /*-------------------------- USART BRR Configuration ---------------------*/
|
---|
| 1908 | if((huart->Instance == USART1) || (huart->Instance == USART6))
|
---|
| 1909 | {
|
---|
| 1910 | huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
|
---|
| 1911 | }
|
---|
| 1912 | else
|
---|
| 1913 | {
|
---|
| 1914 | huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate);
|
---|
| 1915 | }
|
---|
| 1916 | }
|
---|
| 1917 | }
|
---|
| 1918 |
|
---|
| 1919 | /**
|
---|
| 1920 | * @}
|
---|
| 1921 | */
|
---|
| 1922 |
|
---|
| 1923 | #endif /* HAL_UART_MODULE_ENABLED */
|
---|
| 1924 | /**
|
---|
| 1925 | * @}
|
---|
| 1926 | */
|
---|
| 1927 |
|
---|
| 1928 | /**
|
---|
| 1929 | * @}
|
---|
| 1930 | */
|
---|
| 1931 |
|
---|
| 1932 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
---|