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 */
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397 | huart->Instance->CR2 |= USART_CR2_LINEN;
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398 |
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399 | /* Set the USART LIN Break detection length. */
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400 | huart->Instance->CR2 &= ~(USART_CR2_LBDL);
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401 | huart->Instance->CR2 |= BreakDetectLength;
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402 |
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403 | /* Enable the peripheral */
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404 | __HAL_UART_ENABLE(huart);
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405 |
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406 | /* Initialize the UART state*/
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407 | huart->ErrorCode = HAL_UART_ERROR_NONE;
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408 | huart->State= HAL_UART_STATE_READY;
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409 |
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410 | return HAL_OK;
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411 | }
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412 |
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413 | /**
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414 | * @brief Initializes the Multi-Processor mode according to the specified
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415 | * parameters in the UART_InitTypeDef and create the associated handle.
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416 | * @param huart: pointer to a UART_HandleTypeDef structure that contains
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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****/
|
---|