1 | /**
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2 | ******************************************************************************
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3 | * @file stm32f4xx_hal_usart.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 USART 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 Synchronous Asynchronous Receiver Transmitter (USART) 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 | @verbatim
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14 | ==============================================================================
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15 | ##### How to use this driver #####
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16 | ==============================================================================
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17 | [..]
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18 | The USART HAL driver can be used as follows:
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19 |
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20 | (#) Declare a USART_HandleTypeDef handle structure.
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21 | (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit () API:
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22 | (##) Enable the USARTx interface clock.
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23 | (##) USART pins configuration:
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24 | (+++) Enable the clock for the USART GPIOs.
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25 | (+++) Configure these USART pins as alternate function pull-up.
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26 | (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(),
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27 | HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
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28 | (+++) Configure the USARTx interrupt priority.
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29 | (+++) Enable the NVIC USART IRQ handle.
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30 | (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA()
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31 | HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
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32 | (+++) Declare a DMA handle structure for the Tx/Rx stream.
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33 | (+++) Enable the DMAx interface clock.
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34 | (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
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35 | (+++) Configure the DMA Tx/Rx Stream.
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36 | (+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle.
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37 | (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx Stream.
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38 |
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39 | (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
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40 | flow control and Mode(Receiver/Transmitter) in the husart Init structure.
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41 |
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42 | (#) Initialize the USART registers by calling the HAL_USART_Init() API:
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43 | (++) These APIs configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
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44 | by calling the customized HAL_USART_MspInit(&husart) API.
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45 |
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46 | -@@- The specific USART interrupts (Transmission complete interrupt,
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47 | RXNE interrupt and Error Interrupts) will be managed using the macros
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48 | __HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process.
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49 |
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50 | (#) Three operation modes are available within this driver :
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51 |
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52 | *** Polling mode IO operation ***
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53 | =================================
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54 | [..]
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55 | (+) Send an amount of data in blocking mode using HAL_USART_Transmit()
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56 | (+) Receive an amount of data in blocking mode using HAL_USART_Receive()
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57 |
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58 | *** Interrupt mode IO operation ***
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59 | ===================================
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60 | [..]
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61 | (+) Send an amount of data in non blocking mode using HAL_USART_Transmit_IT()
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62 | (+) At transmission end of transfer HAL_USART_TxHalfCpltCallback is executed and user can
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63 | add his own code by customization of function pointer HAL_USART_TxCpltCallback
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64 | (+) Receive an amount of data in non blocking mode using HAL_USART_Receive_IT()
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65 | (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can
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66 | add his own code by customization of function pointer HAL_UART_RxCpltCallback
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67 | (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can
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68 | add his own code by customization of function pointer HAL_USART_ErrorCallback
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69 |
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70 | *** DMA mode IO operation ***
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71 | ==============================
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72 | [..]
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73 | (+) Send an amount of data in non blocking mode (DMA) using HAL_USART_Transmit_DMA()
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74 | (+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can
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75 | add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback
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76 | (+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can
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77 | add his own code by customization of function pointer HAL_USART_TxCpltCallback
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78 | (+) Receive an amount of data in non blocking mode (DMA) using HAL_USART_Receive_DMA()
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79 | (+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can
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80 | add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback
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81 | (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can
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82 | add his own code by customization of function pointer HAL_USART_RxCpltCallback
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83 | (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can
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84 | add his own code by customization of function pointer HAL_USART_ErrorCallback
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85 | (+) Pause the DMA Transfer using HAL_USART_DMAPause()
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86 | (+) Resume the DMA Transfer using HAL_USART_DMAResume()
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87 | (+) Stop the DMA Transfer using HAL_USART_DMAStop()
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88 |
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89 | *** USART HAL driver macros list ***
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90 | =============================================
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91 | [..]
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92 | Below the list of most used macros in USART HAL driver.
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93 |
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94 | (+) __HAL_USART_ENABLE: Enable the USART peripheral
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95 | (+) __HAL_USART_DISABLE: Disable the USART peripheral
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96 | (+) __HAL_USART_GET_FLAG : Check whether the specified USART flag is set or not
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97 | (+) __HAL_USART_CLEAR_FLAG : Clear the specified USART pending flag
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98 | (+) __HAL_USART_ENABLE_IT: Enable the specified USART interrupt
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99 | (+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt
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100 |
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101 | [..]
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102 | (@) You can refer to the USART HAL driver header file for more useful macros
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103 |
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104 | @endverbatim
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105 | ******************************************************************************
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106 | * @attention
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107 | *
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108 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
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109 | *
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110 | * Redistribution and use in source and binary forms, with or without modification,
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111 | * are permitted provided that the following conditions are met:
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112 | * 1. Redistributions of source code must retain the above copyright notice,
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113 | * this list of conditions and the following disclaimer.
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114 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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115 | * this list of conditions and the following disclaimer in the documentation
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116 | * and/or other materials provided with the distribution.
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117 | * 3. Neither the name of STMicroelectronics nor the names of its contributors
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118 | * may be used to endorse or promote products derived from this software
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119 | * without specific prior written permission.
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120 | *
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121 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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122 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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123 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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124 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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125 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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126 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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127 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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128 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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129 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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130 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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131 | *
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132 | ******************************************************************************
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133 | */
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134 |
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135 | /* Includes ------------------------------------------------------------------*/
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136 | #include "stm32f4xx_hal.h"
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137 |
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138 | /** @addtogroup STM32F4xx_HAL_Driver
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139 | * @{
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140 | */
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141 |
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142 | /** @defgroup USART USART
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143 | * @brief HAL USART Synchronous module driver
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144 | * @{
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145 | */
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146 | #ifdef HAL_USART_MODULE_ENABLED
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147 | /* Private typedef -----------------------------------------------------------*/
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148 | /* Private define ------------------------------------------------------------*/
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149 | /** @addtogroup USART_Private_Constants
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150 | * @{
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151 | */
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152 | #define DUMMY_DATA 0xFFFF
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153 | #define USART_TIMEOUT_VALUE 22000
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154 | /**
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155 | * @}
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156 | */
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157 | /* Private macro -------------------------------------------------------------*/
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158 | /* Private variables ---------------------------------------------------------*/
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159 | /* Private function prototypes -----------------------------------------------*/
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160 | /* Private functions ---------------------------------------------------------*/
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161 | /** @addtogroup USART_Private_Functions
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162 | * @{
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163 | */
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164 | static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart);
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165 | static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart);
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166 | static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart);
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167 | static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart);
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168 | static void USART_SetConfig (USART_HandleTypeDef *husart);
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169 | static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
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170 | static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
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171 | static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
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172 | static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
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173 | static void USART_DMAError(DMA_HandleTypeDef *hdma);
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174 | static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
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175 | /**
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176 | * @}
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177 | */
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178 |
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179 | /* Exported functions --------------------------------------------------------*/
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180 | /** @defgroup USART_Exported_Functions USART Exported Functions
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181 | * @{
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182 | */
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183 |
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184 | /** @defgroup USART_Exported_Functions_Group1 USART Initialization and de-initialization functions
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185 | * @brief Initialization and Configuration functions
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186 | *
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187 | @verbatim
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188 | ==============================================================================
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189 | ##### Initialization and Configuration functions #####
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190 | ==============================================================================
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191 | [..]
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192 | This subsection provides a set of functions allowing to initialize the USART
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193 | in asynchronous and in synchronous modes.
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194 | (+) For the asynchronous mode only these parameters can be configured:
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195 | (++) Baud Rate
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196 | (++) Word Length
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197 | (++) Stop Bit
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198 | (++) Parity: If the parity is enabled, then the MSB bit of the data written
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199 | in the data register is transmitted but is changed by the parity bit.
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200 | Depending on the frame length defined by the M bit (8-bits or 9-bits),
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201 | please refer to Reference manual for possible USART frame formats.
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202 | (++) USART polarity
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203 | (++) USART phase
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204 | (++) USART LastBit
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205 | (++) Receiver/transmitter modes
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206 |
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207 | [..]
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208 | The HAL_USART_Init() function follows the USART synchronous configuration
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209 | procedure (details for the procedure are available in reference manual (RM0329)).
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210 |
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211 | @endverbatim
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212 | * @{
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213 | */
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214 |
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215 | /**
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216 | * @brief Initializes the USART mode according to the specified
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217 | * parameters in the USART_InitTypeDef and create the associated handle.
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218 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
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219 | * the configuration information for the specified USART module.
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220 | * @retval HAL status
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221 | */
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222 | HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart)
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223 | {
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224 | /* Check the USART handle allocation */
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225 | if(husart == NULL)
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226 | {
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227 | return HAL_ERROR;
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228 | }
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229 |
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230 | /* Check the parameters */
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231 | assert_param(IS_USART_INSTANCE(husart->Instance));
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232 |
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233 | if(husart->State == HAL_USART_STATE_RESET)
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234 | {
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235 | /* Allocate lock resource and initialize it */
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236 | husart->Lock = HAL_UNLOCKED;
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237 | /* Init the low level hardware */
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238 | HAL_USART_MspInit(husart);
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239 | }
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240 |
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241 | husart->State = HAL_USART_STATE_BUSY;
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242 |
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243 | /* Set the USART Communication parameters */
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244 | USART_SetConfig(husart);
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245 |
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246 | /* In USART mode, the following bits must be kept cleared:
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247 | - LINEN bit in the USART_CR2 register
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248 | - HDSEL, SCEN and IREN bits in the USART_CR3 register */
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249 | husart->Instance->CR2 &= ~USART_CR2_LINEN;
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250 | husart->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_SCEN | USART_CR3_HDSEL);
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251 |
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252 | /* Enable the Peripheral */
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253 | __HAL_USART_ENABLE(husart);
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254 |
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255 | /* Initialize the USART state */
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256 | husart->ErrorCode = HAL_USART_ERROR_NONE;
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257 | husart->State= HAL_USART_STATE_READY;
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258 |
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259 | return HAL_OK;
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260 | }
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261 |
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262 | /**
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263 | * @brief DeInitializes the USART peripheral.
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264 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
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265 | * the configuration information for the specified USART module.
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266 | * @retval HAL status
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267 | */
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268 | HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart)
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269 | {
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270 | /* Check the USART handle allocation */
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271 | if(husart == NULL)
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272 | {
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273 | return HAL_ERROR;
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274 | }
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275 |
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276 | /* Check the parameters */
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277 | assert_param(IS_USART_INSTANCE(husart->Instance));
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278 |
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279 | husart->State = HAL_USART_STATE_BUSY;
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280 |
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281 | /* Disable the Peripheral */
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282 | __HAL_USART_DISABLE(husart);
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283 |
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284 | /* DeInit the low level hardware */
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285 | HAL_USART_MspDeInit(husart);
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286 |
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287 | husart->ErrorCode = HAL_USART_ERROR_NONE;
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288 | husart->State = HAL_USART_STATE_RESET;
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289 |
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290 | /* Release Lock */
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291 | __HAL_UNLOCK(husart);
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292 |
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293 | return HAL_OK;
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294 | }
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295 |
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296 | /**
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297 | * @brief USART MSP Init.
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298 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
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299 | * the configuration information for the specified USART module.
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300 | * @retval None
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301 | */
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302 | __weak void HAL_USART_MspInit(USART_HandleTypeDef *husart)
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303 | {
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304 | /* NOTE: This function Should not be modified, when the callback is needed,
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305 | the HAL_USART_MspInit could be implemented in the user file
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306 | */
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307 | }
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308 |
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309 | /**
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310 | * @brief USART MSP DeInit.
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311 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
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312 | * the configuration information for the specified USART module.
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313 | * @retval None
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314 | */
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315 | __weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart)
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316 | {
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317 | /* NOTE: This function Should not be modified, when the callback is needed,
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318 | the HAL_USART_MspDeInit could be implemented in the user file
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319 | */
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320 | }
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321 |
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322 | /**
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323 | * @}
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324 | */
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325 |
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326 | /** @defgroup USART_Exported_Functions_Group2 IO operation functions
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327 | * @brief USART Transmit and Receive functions
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328 | *
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329 | @verbatim
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330 | ==============================================================================
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331 | ##### IO operation functions #####
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332 | ==============================================================================
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333 | [..]
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334 | This subsection provides a set of functions allowing to manage the USART synchronous
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335 | data transfers.
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336 |
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337 | [..]
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338 | The USART supports master mode only: it cannot receive or send data related to an input
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339 | clock (SCLK is always an output).
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340 |
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341 | (#) There are two modes of transfer:
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342 | (++) Blocking mode: The communication is performed in polling mode.
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343 | The HAL status of all data processing is returned by the same function
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344 | after finishing transfer.
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345 | (++) No-Blocking mode: The communication is performed using Interrupts
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346 | or DMA, These API's return the HAL status.
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347 | The end of the data processing will be indicated through the
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348 | dedicated USART IRQ when using Interrupt mode or the DMA IRQ when
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349 | using DMA mode.
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350 | The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback()
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351 | user callbacks
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352 | will be executed respectively at the end of the transmit or Receive process
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353 | The HAL_USART_ErrorCallback() user callback will be executed when a communication
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354 | error is detected
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355 |
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356 | (#) Blocking mode APIs are :
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357 | (++) HAL_USART_Transmit() in simplex mode
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358 | (++) HAL_USART_Receive() in full duplex receive only
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359 | (++) HAL_USART_TransmitReceive() in full duplex mode
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360 |
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361 | (#) Non Blocking mode APIs with Interrupt are :
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362 | (++) HAL_USART_Transmit_IT()in simplex mode
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363 | (++) HAL_USART_Receive_IT() in full duplex receive only
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364 | (++) HAL_USART_TransmitReceive_IT() in full duplex mode
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365 | (++) HAL_USART_IRQHandler()
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366 |
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367 | (#) Non Blocking mode functions with DMA are :
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368 | (++) HAL_USART_Transmit_DMA()in simplex mode
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369 | (++) HAL_USART_Receive_DMA() in full duplex receive only
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370 | (++) HAL_USART_TransmitReceie_DMA() in full duplex mode
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371 | (++) HAL_USART_DMAPause()
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372 | (++) HAL_USART_DMAResume()
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373 | (++) HAL_USART_DMAStop()
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374 |
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375 | (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:
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376 | (++) HAL_USART_TxHalfCpltCallback()
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377 | (++) HAL_USART_TxCpltCallback()
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378 | (++) HAL_USART_RxHalfCpltCallback()
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379 | (++) HAL_USART_RxCpltCallback()
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380 | (++) HAL_USART_ErrorCallback()
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381 | (++) HAL_USART_TxRxCpltCallback()
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382 |
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383 | @endverbatim
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384 | * @{
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385 | */
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386 |
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387 | /**
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388 | * @brief Simplex Send an amount of data in blocking mode.
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389 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
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390 | * the configuration information for the specified USART module.
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391 | * @param pTxData: Pointer to data buffer
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392 | * @param Size: Amount of data to be sent
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393 | * @param Timeout: Timeout duration
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394 | * @retval HAL status
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395 | */
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396 | HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout)
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397 | {
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398 | uint16_t* tmp;
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399 |
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400 | if(husart->State == HAL_USART_STATE_READY)
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401 | {
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402 | if((pTxData == NULL) || (Size == 0))
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403 | {
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404 | return HAL_ERROR;
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405 | }
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406 |
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407 | /* Process Locked */
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408 | __HAL_LOCK(husart);
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409 |
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410 | husart->ErrorCode = HAL_USART_ERROR_NONE;
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411 | husart->State = HAL_USART_STATE_BUSY_TX;
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412 |
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413 | husart->TxXferSize = Size;
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414 | husart->TxXferCount = Size;
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415 | while(husart->TxXferCount > 0)
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416 | {
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417 | husart->TxXferCount--;
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418 | if(husart->Init.WordLength == USART_WORDLENGTH_9B)
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419 | {
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420 | /* Wait for TC flag in order to write data in DR */
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421 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
422 | {
|
---|
423 | return HAL_TIMEOUT;
|
---|
424 | }
|
---|
425 | tmp = (uint16_t*) pTxData;
|
---|
426 | husart->Instance->DR = (*tmp & (uint16_t)0x01FF);
|
---|
427 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
428 | {
|
---|
429 | pTxData += 2;
|
---|
430 | }
|
---|
431 | else
|
---|
432 | {
|
---|
433 | pTxData += 1;
|
---|
434 | }
|
---|
435 | }
|
---|
436 | else
|
---|
437 | {
|
---|
438 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
439 | {
|
---|
440 | return HAL_TIMEOUT;
|
---|
441 | }
|
---|
442 | husart->Instance->DR = (*pTxData++ & (uint8_t)0xFF);
|
---|
443 | }
|
---|
444 | }
|
---|
445 |
|
---|
446 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK)
|
---|
447 | {
|
---|
448 | return HAL_TIMEOUT;
|
---|
449 | }
|
---|
450 |
|
---|
451 | husart->State = HAL_USART_STATE_READY;
|
---|
452 |
|
---|
453 | /* Process Unlocked */
|
---|
454 | __HAL_UNLOCK(husart);
|
---|
455 |
|
---|
456 | return HAL_OK;
|
---|
457 | }
|
---|
458 | else
|
---|
459 | {
|
---|
460 | return HAL_BUSY;
|
---|
461 | }
|
---|
462 | }
|
---|
463 |
|
---|
464 | /**
|
---|
465 | * @brief Full-Duplex Receive an amount of data in blocking mode.
|
---|
466 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
467 | * the configuration information for the specified USART module.
|
---|
468 | * @param pRxData: Pointer to data buffer
|
---|
469 | * @param Size: Amount of data to be received
|
---|
470 | * @param Timeout: Timeout duration
|
---|
471 | * @retval HAL status
|
---|
472 | */
|
---|
473 | HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
|
---|
474 | {
|
---|
475 | uint16_t* tmp;
|
---|
476 |
|
---|
477 | if(husart->State == HAL_USART_STATE_READY)
|
---|
478 | {
|
---|
479 | if((pRxData == NULL) || (Size == 0))
|
---|
480 | {
|
---|
481 | return HAL_ERROR;
|
---|
482 | }
|
---|
483 | /* Process Locked */
|
---|
484 | __HAL_LOCK(husart);
|
---|
485 |
|
---|
486 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
487 | husart->State = HAL_USART_STATE_BUSY_RX;
|
---|
488 |
|
---|
489 | husart->RxXferSize = Size;
|
---|
490 | husart->RxXferCount = Size;
|
---|
491 | /* Check the remain data to be received */
|
---|
492 | while(husart->RxXferCount > 0)
|
---|
493 | {
|
---|
494 | husart->RxXferCount--;
|
---|
495 | if(husart->Init.WordLength == USART_WORDLENGTH_9B)
|
---|
496 | {
|
---|
497 | /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */
|
---|
498 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
499 | {
|
---|
500 | return HAL_TIMEOUT;
|
---|
501 | }
|
---|
502 | /* Send dummy byte in order to generate clock */
|
---|
503 | husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);
|
---|
504 |
|
---|
505 | /* Wait for RXNE Flag */
|
---|
506 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
507 | {
|
---|
508 | return HAL_TIMEOUT;
|
---|
509 | }
|
---|
510 | tmp = (uint16_t*) pRxData ;
|
---|
511 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
512 | {
|
---|
513 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
|
---|
514 | pRxData +=2;
|
---|
515 | }
|
---|
516 | else
|
---|
517 | {
|
---|
518 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);
|
---|
519 | pRxData +=1;
|
---|
520 | }
|
---|
521 | }
|
---|
522 | else
|
---|
523 | {
|
---|
524 | /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */
|
---|
525 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
526 | {
|
---|
527 | return HAL_TIMEOUT;
|
---|
528 | }
|
---|
529 |
|
---|
530 | /* Send Dummy Byte in order to generate clock */
|
---|
531 | husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF);
|
---|
532 |
|
---|
533 | /* Wait until RXNE flag is set to receive the byte */
|
---|
534 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
535 | {
|
---|
536 | return HAL_TIMEOUT;
|
---|
537 | }
|
---|
538 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
539 | {
|
---|
540 | /* Receive data */
|
---|
541 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
|
---|
542 | }
|
---|
543 | else
|
---|
544 | {
|
---|
545 | /* Receive data */
|
---|
546 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);
|
---|
547 | }
|
---|
548 |
|
---|
549 | }
|
---|
550 | }
|
---|
551 |
|
---|
552 | husart->State = HAL_USART_STATE_READY;
|
---|
553 |
|
---|
554 | /* Process Unlocked */
|
---|
555 | __HAL_UNLOCK(husart);
|
---|
556 |
|
---|
557 | return HAL_OK;
|
---|
558 | }
|
---|
559 | else
|
---|
560 | {
|
---|
561 | return HAL_BUSY;
|
---|
562 | }
|
---|
563 | }
|
---|
564 |
|
---|
565 | /**
|
---|
566 | * @brief Full-Duplex Send receive an amount of data in full-duplex mode (blocking mode).
|
---|
567 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
568 | * the configuration information for the specified USART module.
|
---|
569 | * @param pTxData: Pointer to data transmitted buffer
|
---|
570 | * @param pRxData: Pointer to data received buffer
|
---|
571 | * @param Size: Amount of data to be sent
|
---|
572 | * @param Timeout: Timeout duration
|
---|
573 | * @retval HAL status
|
---|
574 | */
|
---|
575 | HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
|
---|
576 | {
|
---|
577 | uint16_t* tmp;
|
---|
578 |
|
---|
579 | if(husart->State == HAL_USART_STATE_READY)
|
---|
580 | {
|
---|
581 | if((pTxData == NULL) || (pRxData == NULL) || (Size == 0))
|
---|
582 | {
|
---|
583 | return HAL_ERROR;
|
---|
584 | }
|
---|
585 | /* Process Locked */
|
---|
586 | __HAL_LOCK(husart);
|
---|
587 |
|
---|
588 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
589 | husart->State = HAL_USART_STATE_BUSY_RX;
|
---|
590 |
|
---|
591 | husart->RxXferSize = Size;
|
---|
592 | husart->TxXferSize = Size;
|
---|
593 | husart->TxXferCount = Size;
|
---|
594 | husart->RxXferCount = Size;
|
---|
595 |
|
---|
596 | /* Check the remain data to be received */
|
---|
597 | while(husart->TxXferCount > 0)
|
---|
598 | {
|
---|
599 | husart->TxXferCount--;
|
---|
600 | husart->RxXferCount--;
|
---|
601 | if(husart->Init.WordLength == USART_WORDLENGTH_9B)
|
---|
602 | {
|
---|
603 | /* Wait for TC flag in order to write data in DR */
|
---|
604 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
605 | {
|
---|
606 | return HAL_TIMEOUT;
|
---|
607 | }
|
---|
608 | tmp = (uint16_t*) pTxData;
|
---|
609 | husart->Instance->DR = (*tmp & (uint16_t)0x01FF);
|
---|
610 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
611 | {
|
---|
612 | pTxData += 2;
|
---|
613 | }
|
---|
614 | else
|
---|
615 | {
|
---|
616 | pTxData += 1;
|
---|
617 | }
|
---|
618 |
|
---|
619 | /* Wait for RXNE Flag */
|
---|
620 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
621 | {
|
---|
622 | return HAL_TIMEOUT;
|
---|
623 | }
|
---|
624 | tmp = (uint16_t*) pRxData ;
|
---|
625 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
626 | {
|
---|
627 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
|
---|
628 | pRxData += 2;
|
---|
629 | }
|
---|
630 | else
|
---|
631 | {
|
---|
632 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);
|
---|
633 | pRxData += 1;
|
---|
634 | }
|
---|
635 | }
|
---|
636 | else
|
---|
637 | {
|
---|
638 | /* Wait for TC flag in order to write data in DR */
|
---|
639 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
640 | {
|
---|
641 | return HAL_TIMEOUT;
|
---|
642 | }
|
---|
643 | husart->Instance->DR = (*pTxData++ & (uint8_t)0x00FF);
|
---|
644 |
|
---|
645 | /* Wait for RXNE Flag */
|
---|
646 | if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
647 | {
|
---|
648 | return HAL_TIMEOUT;
|
---|
649 | }
|
---|
650 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
651 | {
|
---|
652 | /* Receive data */
|
---|
653 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
|
---|
654 | }
|
---|
655 | else
|
---|
656 | {
|
---|
657 | /* Receive data */
|
---|
658 | *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);
|
---|
659 | }
|
---|
660 | }
|
---|
661 | }
|
---|
662 |
|
---|
663 | husart->State = HAL_USART_STATE_READY;
|
---|
664 |
|
---|
665 | /* Process Unlocked */
|
---|
666 | __HAL_UNLOCK(husart);
|
---|
667 |
|
---|
668 | return HAL_OK;
|
---|
669 | }
|
---|
670 | else
|
---|
671 | {
|
---|
672 | return HAL_BUSY;
|
---|
673 | }
|
---|
674 | }
|
---|
675 |
|
---|
676 | /**
|
---|
677 | * @brief Simplex Send an amount of data in non-blocking mode.
|
---|
678 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
679 | * the configuration information for the specified USART module.
|
---|
680 | * @param pTxData: Pointer to data buffer
|
---|
681 | * @param Size: Amount of data to be sent
|
---|
682 | * @retval HAL status
|
---|
683 | * @note The USART errors are not managed to avoid the overrun error.
|
---|
684 | */
|
---|
685 | HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
|
---|
686 | {
|
---|
687 | if(husart->State == HAL_USART_STATE_READY)
|
---|
688 | {
|
---|
689 | if((pTxData == NULL) || (Size == 0))
|
---|
690 | {
|
---|
691 | return HAL_ERROR;
|
---|
692 | }
|
---|
693 |
|
---|
694 | /* Process Locked */
|
---|
695 | __HAL_LOCK(husart);
|
---|
696 |
|
---|
697 | husart->pTxBuffPtr = pTxData;
|
---|
698 | husart->TxXferSize = Size;
|
---|
699 | husart->TxXferCount = Size;
|
---|
700 |
|
---|
701 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
702 | husart->State = HAL_USART_STATE_BUSY_TX;
|
---|
703 |
|
---|
704 | /* The USART Error Interrupts: (Frame error, Noise error, Overrun error)
|
---|
705 | are not managed by the USART transmit process to avoid the overrun interrupt
|
---|
706 | when the USART mode is configured for transmit and receive "USART_MODE_TX_RX"
|
---|
707 | to benefit for the frame error and noise interrupts the USART mode should be
|
---|
708 | configured only for transmit "USART_MODE_TX"
|
---|
709 | The __HAL_USART_ENABLE_IT(husart, USART_IT_ERR) can be used to enable the Frame error,
|
---|
710 | Noise error interrupt */
|
---|
711 |
|
---|
712 | /* Process Unlocked */
|
---|
713 | __HAL_UNLOCK(husart);
|
---|
714 |
|
---|
715 | /* Enable the USART Transmit Data Register Empty Interrupt */
|
---|
716 | __HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
|
---|
717 |
|
---|
718 | return HAL_OK;
|
---|
719 | }
|
---|
720 | else
|
---|
721 | {
|
---|
722 | return HAL_BUSY;
|
---|
723 | }
|
---|
724 | }
|
---|
725 |
|
---|
726 | /**
|
---|
727 | * @brief Simplex Receive an amount of data in non-blocking mode.
|
---|
728 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
729 | * the configuration information for the specified USART module.
|
---|
730 | * @param pRxData: Pointer to data buffer
|
---|
731 | * @param Size: Amount of data to be received
|
---|
732 | * @retval HAL status
|
---|
733 | */
|
---|
734 | HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
|
---|
735 | {
|
---|
736 | if(husart->State == HAL_USART_STATE_READY)
|
---|
737 | {
|
---|
738 | if((pRxData == NULL) || (Size == 0))
|
---|
739 | {
|
---|
740 | return HAL_ERROR;
|
---|
741 | }
|
---|
742 | /* Process Locked */
|
---|
743 | __HAL_LOCK(husart);
|
---|
744 |
|
---|
745 | husart->pRxBuffPtr = pRxData;
|
---|
746 | husart->RxXferSize = Size;
|
---|
747 | husart->RxXferCount = Size;
|
---|
748 |
|
---|
749 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
750 | husart->State = HAL_USART_STATE_BUSY_RX;
|
---|
751 |
|
---|
752 | /* Process Unlocked */
|
---|
753 | __HAL_UNLOCK(husart);
|
---|
754 |
|
---|
755 | /* Enable the USART Data Register not empty Interrupt */
|
---|
756 | __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE);
|
---|
757 |
|
---|
758 | /* Enable the USART Parity Error Interrupt */
|
---|
759 | __HAL_USART_ENABLE_IT(husart, USART_IT_PE);
|
---|
760 |
|
---|
761 | /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
762 | __HAL_USART_ENABLE_IT(husart, USART_IT_ERR);
|
---|
763 |
|
---|
764 | /* Send dummy byte in order to generate the clock for the slave to send data */
|
---|
765 | husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);
|
---|
766 |
|
---|
767 | return HAL_OK;
|
---|
768 | }
|
---|
769 | else
|
---|
770 | {
|
---|
771 | return HAL_BUSY;
|
---|
772 | }
|
---|
773 | }
|
---|
774 |
|
---|
775 | /**
|
---|
776 | * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
|
---|
777 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
778 | * the configuration information for the specified USART module.
|
---|
779 | * @param pTxData: Pointer to data transmitted buffer
|
---|
780 | * @param pRxData: Pointer to data received buffer
|
---|
781 | * @param Size: Amount of data to be received
|
---|
782 | * @retval HAL status
|
---|
783 | */
|
---|
784 | HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
|
---|
785 | {
|
---|
786 | if(husart->State == HAL_USART_STATE_READY)
|
---|
787 | {
|
---|
788 | if((pTxData == NULL) || (pRxData == NULL) || (Size == 0))
|
---|
789 | {
|
---|
790 | return HAL_ERROR;
|
---|
791 | }
|
---|
792 | /* Process Locked */
|
---|
793 | __HAL_LOCK(husart);
|
---|
794 |
|
---|
795 | husart->pRxBuffPtr = pRxData;
|
---|
796 | husart->RxXferSize = Size;
|
---|
797 | husart->RxXferCount = Size;
|
---|
798 | husart->pTxBuffPtr = pTxData;
|
---|
799 | husart->TxXferSize = Size;
|
---|
800 | husart->TxXferCount = Size;
|
---|
801 |
|
---|
802 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
803 | husart->State = HAL_USART_STATE_BUSY_TX_RX;
|
---|
804 |
|
---|
805 | /* Process Unlocked */
|
---|
806 | __HAL_UNLOCK(husart);
|
---|
807 |
|
---|
808 | /* Enable the USART Data Register not empty Interrupt */
|
---|
809 | __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE);
|
---|
810 |
|
---|
811 | /* Enable the USART Parity Error Interrupt */
|
---|
812 | __HAL_USART_ENABLE_IT(husart, USART_IT_PE);
|
---|
813 |
|
---|
814 | /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
815 | __HAL_USART_ENABLE_IT(husart, USART_IT_ERR);
|
---|
816 |
|
---|
817 | /* Enable the USART Transmit Data Register Empty Interrupt */
|
---|
818 | __HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
|
---|
819 |
|
---|
820 | return HAL_OK;
|
---|
821 | }
|
---|
822 | else
|
---|
823 | {
|
---|
824 | return HAL_BUSY;
|
---|
825 | }
|
---|
826 | }
|
---|
827 |
|
---|
828 | /**
|
---|
829 | * @brief Simplex Send an amount of data in non-blocking mode.
|
---|
830 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
831 | * the configuration information for the specified USART module.
|
---|
832 | * @param pTxData: Pointer to data buffer
|
---|
833 | * @param Size: Amount of data to be sent
|
---|
834 | * @retval HAL status
|
---|
835 | */
|
---|
836 | HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
|
---|
837 | {
|
---|
838 | uint32_t *tmp;
|
---|
839 |
|
---|
840 | if(husart->State == HAL_USART_STATE_READY)
|
---|
841 | {
|
---|
842 | if((pTxData == NULL) || (Size == 0))
|
---|
843 | {
|
---|
844 | return HAL_ERROR;
|
---|
845 | }
|
---|
846 | /* Process Locked */
|
---|
847 | __HAL_LOCK(husart);
|
---|
848 |
|
---|
849 | husart->pTxBuffPtr = pTxData;
|
---|
850 | husart->TxXferSize = Size;
|
---|
851 | husart->TxXferCount = Size;
|
---|
852 |
|
---|
853 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
854 | husart->State = HAL_USART_STATE_BUSY_TX;
|
---|
855 |
|
---|
856 | /* Set the USART DMA transfer complete callback */
|
---|
857 | husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
|
---|
858 |
|
---|
859 | /* Set the USART DMA Half transfer complete callback */
|
---|
860 | husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
|
---|
861 |
|
---|
862 | /* Set the DMA error callback */
|
---|
863 | husart->hdmatx->XferErrorCallback = USART_DMAError;
|
---|
864 |
|
---|
865 | /* Enable the USART transmit DMA Stream */
|
---|
866 | tmp = (uint32_t*)&pTxData;
|
---|
867 | HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
|
---|
868 |
|
---|
869 | /* Clear the TC flag in the SR register by writing 0 to it */
|
---|
870 | __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);
|
---|
871 |
|
---|
872 | /* Enable the DMA transfer for transmit request by setting the DMAT bit
|
---|
873 | in the USART CR3 register */
|
---|
874 | husart->Instance->CR3 |= USART_CR3_DMAT;
|
---|
875 |
|
---|
876 | /* Process Unlocked */
|
---|
877 | __HAL_UNLOCK(husart);
|
---|
878 |
|
---|
879 | return HAL_OK;
|
---|
880 | }
|
---|
881 | else
|
---|
882 | {
|
---|
883 | return HAL_BUSY;
|
---|
884 | }
|
---|
885 | }
|
---|
886 |
|
---|
887 | /**
|
---|
888 | * @brief Full-Duplex Receive an amount of data in non-blocking mode.
|
---|
889 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
890 | * the configuration information for the specified USART module.
|
---|
891 | * @param pRxData: Pointer to data buffer
|
---|
892 | * @param Size: Amount of data to be received
|
---|
893 | * @retval HAL status
|
---|
894 | * @note The USART DMA transmit stream must be configured in order to generate the clock for the slave.
|
---|
895 | * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
|
---|
896 | */
|
---|
897 | HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
|
---|
898 | {
|
---|
899 | uint32_t *tmp;
|
---|
900 |
|
---|
901 | if(husart->State == HAL_USART_STATE_READY)
|
---|
902 | {
|
---|
903 | if((pRxData == NULL) || (Size == 0))
|
---|
904 | {
|
---|
905 | return HAL_ERROR;
|
---|
906 | }
|
---|
907 |
|
---|
908 | /* Process Locked */
|
---|
909 | __HAL_LOCK(husart);
|
---|
910 |
|
---|
911 | husart->pRxBuffPtr = pRxData;
|
---|
912 | husart->RxXferSize = Size;
|
---|
913 | husart->pTxBuffPtr = pRxData;
|
---|
914 | husart->TxXferSize = Size;
|
---|
915 |
|
---|
916 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
917 | husart->State = HAL_USART_STATE_BUSY_RX;
|
---|
918 |
|
---|
919 | /* Set the USART DMA Rx transfer complete callback */
|
---|
920 | husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
|
---|
921 |
|
---|
922 | /* Set the USART DMA Half transfer complete callback */
|
---|
923 | husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
|
---|
924 |
|
---|
925 | /* Set the USART DMA Rx transfer error callback */
|
---|
926 | husart->hdmarx->XferErrorCallback = USART_DMAError;
|
---|
927 |
|
---|
928 | /* Enable the USART receive DMA Stream */
|
---|
929 | tmp = (uint32_t*)&pRxData;
|
---|
930 | HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);
|
---|
931 |
|
---|
932 | /* Enable the USART transmit DMA Stream: the transmit stream is used in order
|
---|
933 | to generate in the non-blocking mode the clock to the slave device,
|
---|
934 | this mode isn't a simplex receive mode but a full-duplex receive one */
|
---|
935 | HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
|
---|
936 |
|
---|
937 | /* Clear the Overrun flag just before enabling the DMA Rx request: mandatory for the second transfer
|
---|
938 | when using the USART in circular mode */
|
---|
939 | __HAL_USART_CLEAR_OREFLAG(husart);
|
---|
940 |
|
---|
941 | /* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
---|
942 | in the USART CR3 register */
|
---|
943 | husart->Instance->CR3 |= USART_CR3_DMAR;
|
---|
944 |
|
---|
945 | /* Enable the DMA transfer for transmit request by setting the DMAT bit
|
---|
946 | in the USART CR3 register */
|
---|
947 | husart->Instance->CR3 |= USART_CR3_DMAT;
|
---|
948 |
|
---|
949 | /* Process Unlocked */
|
---|
950 | __HAL_UNLOCK(husart);
|
---|
951 |
|
---|
952 | return HAL_OK;
|
---|
953 | }
|
---|
954 | else
|
---|
955 | {
|
---|
956 | return HAL_BUSY;
|
---|
957 | }
|
---|
958 | }
|
---|
959 |
|
---|
960 | /**
|
---|
961 | * @brief Full-Duplex Transmit Receive an amount of data in non-blocking mode.
|
---|
962 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
963 | * the configuration information for the specified USART module.
|
---|
964 | * @param pTxData: Pointer to data transmitted buffer
|
---|
965 | * @param pRxData: Pointer to data received buffer
|
---|
966 | * @param Size: Amount of data to be received
|
---|
967 | * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
|
---|
968 | * @retval HAL status
|
---|
969 | */
|
---|
970 | HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
|
---|
971 | {
|
---|
972 | uint32_t *tmp;
|
---|
973 |
|
---|
974 | if(husart->State == HAL_USART_STATE_READY)
|
---|
975 | {
|
---|
976 | if((pTxData == NULL) || (pRxData == NULL) || (Size == 0))
|
---|
977 | {
|
---|
978 | return HAL_ERROR;
|
---|
979 | }
|
---|
980 | /* Process Locked */
|
---|
981 | __HAL_LOCK(husart);
|
---|
982 |
|
---|
983 | husart->pRxBuffPtr = pRxData;
|
---|
984 | husart->RxXferSize = Size;
|
---|
985 | husart->pTxBuffPtr = pTxData;
|
---|
986 | husart->TxXferSize = Size;
|
---|
987 |
|
---|
988 | husart->ErrorCode = HAL_USART_ERROR_NONE;
|
---|
989 | husart->State = HAL_USART_STATE_BUSY_TX_RX;
|
---|
990 |
|
---|
991 | /* Set the USART DMA Rx transfer complete callback */
|
---|
992 | husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
|
---|
993 |
|
---|
994 | /* Set the USART DMA Half transfer complete callback */
|
---|
995 | husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
|
---|
996 |
|
---|
997 | /* Set the USART DMA Tx transfer complete callback */
|
---|
998 | husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
|
---|
999 |
|
---|
1000 | /* Set the USART DMA Half transfer complete callback */
|
---|
1001 | husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
|
---|
1002 |
|
---|
1003 | /* Set the USART DMA Tx transfer error callback */
|
---|
1004 | husart->hdmatx->XferErrorCallback = USART_DMAError;
|
---|
1005 |
|
---|
1006 | /* Set the USART DMA Rx transfer error callback */
|
---|
1007 | husart->hdmarx->XferErrorCallback = USART_DMAError;
|
---|
1008 |
|
---|
1009 | /* Enable the USART receive DMA Stream */
|
---|
1010 | tmp = (uint32_t*)&pRxData;
|
---|
1011 | HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);
|
---|
1012 |
|
---|
1013 | /* Enable the USART transmit DMA Stream */
|
---|
1014 | tmp = (uint32_t*)&pTxData;
|
---|
1015 | HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
|
---|
1016 |
|
---|
1017 | /* Clear the TC flag in the SR register by writing 0 to it */
|
---|
1018 | __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);
|
---|
1019 |
|
---|
1020 | /* Clear the Overrun flag: mandatory for the second transfer in circular mode */
|
---|
1021 | __HAL_USART_CLEAR_OREFLAG(husart);
|
---|
1022 |
|
---|
1023 | /* Enable the DMA transfer for the receiver request by setting the DMAR bit
|
---|
1024 | in the USART CR3 register */
|
---|
1025 | husart->Instance->CR3 |= USART_CR3_DMAR;
|
---|
1026 |
|
---|
1027 | /* Enable the DMA transfer for transmit request by setting the DMAT bit
|
---|
1028 | in the USART CR3 register */
|
---|
1029 | husart->Instance->CR3 |= USART_CR3_DMAT;
|
---|
1030 |
|
---|
1031 | /* Process Unlocked */
|
---|
1032 | __HAL_UNLOCK(husart);
|
---|
1033 |
|
---|
1034 | return HAL_OK;
|
---|
1035 | }
|
---|
1036 | else
|
---|
1037 | {
|
---|
1038 | return HAL_BUSY;
|
---|
1039 | }
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | /**
|
---|
1043 | * @brief Pauses the DMA Transfer.
|
---|
1044 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1045 | * the configuration information for the specified USART module.
|
---|
1046 | * @retval HAL status
|
---|
1047 | */
|
---|
1048 | HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart)
|
---|
1049 | {
|
---|
1050 | /* Process Locked */
|
---|
1051 | __HAL_LOCK(husart);
|
---|
1052 |
|
---|
1053 | /* Disable the USART DMA Tx request */
|
---|
1054 | husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
|
---|
1055 |
|
---|
1056 | /* Process Unlocked */
|
---|
1057 | __HAL_UNLOCK(husart);
|
---|
1058 |
|
---|
1059 | return HAL_OK;
|
---|
1060 | }
|
---|
1061 |
|
---|
1062 | /**
|
---|
1063 | * @brief Resumes the DMA Transfer.
|
---|
1064 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1065 | * the configuration information for the specified USART module.
|
---|
1066 | * @retval HAL status
|
---|
1067 | */
|
---|
1068 | HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart)
|
---|
1069 | {
|
---|
1070 | /* Process Locked */
|
---|
1071 | __HAL_LOCK(husart);
|
---|
1072 |
|
---|
1073 | /* Enable the USART DMA Tx request */
|
---|
1074 | husart->Instance->CR3 |= USART_CR3_DMAT;
|
---|
1075 |
|
---|
1076 | /* Process Unlocked */
|
---|
1077 | __HAL_UNLOCK(husart);
|
---|
1078 |
|
---|
1079 | return HAL_OK;
|
---|
1080 | }
|
---|
1081 |
|
---|
1082 | /**
|
---|
1083 | * @brief Stops the DMA Transfer.
|
---|
1084 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1085 | * the configuration information for the specified USART module.
|
---|
1086 | * @retval HAL status
|
---|
1087 | */
|
---|
1088 | HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart)
|
---|
1089 | {
|
---|
1090 | /* The Lock is not implemented on this API to allow the user application
|
---|
1091 | to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback():
|
---|
1092 | when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
|
---|
1093 | and the correspond call back is executed HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback()
|
---|
1094 | */
|
---|
1095 |
|
---|
1096 | /* Abort the USART DMA Tx Stream */
|
---|
1097 | if(husart->hdmatx != NULL)
|
---|
1098 | {
|
---|
1099 | HAL_DMA_Abort(husart->hdmatx);
|
---|
1100 | }
|
---|
1101 | /* Abort the USART DMA Rx Stream */
|
---|
1102 | if(husart->hdmarx != NULL)
|
---|
1103 | {
|
---|
1104 | HAL_DMA_Abort(husart->hdmarx);
|
---|
1105 | }
|
---|
1106 |
|
---|
1107 | /* Disable the USART Tx/Rx DMA requests */
|
---|
1108 | husart->Instance->CR3 &= ~USART_CR3_DMAT;
|
---|
1109 | husart->Instance->CR3 &= ~USART_CR3_DMAR;
|
---|
1110 |
|
---|
1111 | husart->State = HAL_USART_STATE_READY;
|
---|
1112 |
|
---|
1113 | return HAL_OK;
|
---|
1114 | }
|
---|
1115 |
|
---|
1116 | /**
|
---|
1117 | * @brief This function handles USART interrupt request.
|
---|
1118 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1119 | * the configuration information for the specified USART module.
|
---|
1120 | * @retval None
|
---|
1121 | */
|
---|
1122 | void HAL_USART_IRQHandler(USART_HandleTypeDef *husart)
|
---|
1123 | {
|
---|
1124 | uint32_t tmp1 = 0, tmp2 = 0;
|
---|
1125 |
|
---|
1126 | tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_PE);
|
---|
1127 | tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_PE);
|
---|
1128 | /* USART parity error interrupt occurred -----------------------------------*/
|
---|
1129 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
1130 | {
|
---|
1131 | __HAL_USART_CLEAR_PEFLAG(husart);
|
---|
1132 | husart->ErrorCode |= HAL_USART_ERROR_PE;
|
---|
1133 | }
|
---|
1134 |
|
---|
1135 | tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_FE);
|
---|
1136 | tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR);
|
---|
1137 | /* USART frame error interrupt occurred ------------------------------------*/
|
---|
1138 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
1139 | {
|
---|
1140 | __HAL_USART_CLEAR_FEFLAG(husart);
|
---|
1141 | husart->ErrorCode |= HAL_USART_ERROR_FE;
|
---|
1142 | }
|
---|
1143 |
|
---|
1144 | tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_NE);
|
---|
1145 | tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR);
|
---|
1146 | /* USART noise error interrupt occurred ------------------------------------*/
|
---|
1147 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
1148 | {
|
---|
1149 | __HAL_USART_CLEAR_NEFLAG(husart);
|
---|
1150 | husart->ErrorCode |= HAL_USART_ERROR_NE;
|
---|
1151 | }
|
---|
1152 |
|
---|
1153 | tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_ORE);
|
---|
1154 | tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR);
|
---|
1155 | /* USART Over-Run interrupt occurred ---------------------------------------*/
|
---|
1156 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
1157 | {
|
---|
1158 | __HAL_USART_CLEAR_OREFLAG(husart);
|
---|
1159 | husart->ErrorCode |= HAL_USART_ERROR_ORE;
|
---|
1160 | }
|
---|
1161 |
|
---|
1162 | if(husart->ErrorCode != HAL_USART_ERROR_NONE)
|
---|
1163 | {
|
---|
1164 | /* Set the USART state ready to be able to start again the process */
|
---|
1165 | husart->State = HAL_USART_STATE_READY;
|
---|
1166 |
|
---|
1167 | HAL_USART_ErrorCallback(husart);
|
---|
1168 | }
|
---|
1169 |
|
---|
1170 | tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE);
|
---|
1171 | tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_RXNE);
|
---|
1172 | /* USART in mode Receiver --------------------------------------------------*/
|
---|
1173 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
1174 | {
|
---|
1175 | if(husart->State == HAL_USART_STATE_BUSY_RX)
|
---|
1176 | {
|
---|
1177 | USART_Receive_IT(husart);
|
---|
1178 | }
|
---|
1179 | else
|
---|
1180 | {
|
---|
1181 | USART_TransmitReceive_IT(husart);
|
---|
1182 | }
|
---|
1183 | }
|
---|
1184 |
|
---|
1185 | tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_TXE);
|
---|
1186 | tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_TXE);
|
---|
1187 | /* USART in mode Transmitter -----------------------------------------------*/
|
---|
1188 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
1189 | {
|
---|
1190 | if(husart->State == HAL_USART_STATE_BUSY_TX)
|
---|
1191 | {
|
---|
1192 | USART_Transmit_IT(husart);
|
---|
1193 | }
|
---|
1194 | else
|
---|
1195 | {
|
---|
1196 | USART_TransmitReceive_IT(husart);
|
---|
1197 | }
|
---|
1198 | }
|
---|
1199 |
|
---|
1200 | tmp1 = __HAL_USART_GET_FLAG(husart, USART_FLAG_TC);
|
---|
1201 | tmp2 = __HAL_USART_GET_IT_SOURCE(husart, USART_IT_TC);
|
---|
1202 | /* USART in mode Transmitter (transmission end) ----------------------------*/
|
---|
1203 | if((tmp1 != RESET) && (tmp2 != RESET))
|
---|
1204 | {
|
---|
1205 | USART_EndTransmit_IT(husart);
|
---|
1206 | }
|
---|
1207 | }
|
---|
1208 |
|
---|
1209 | /**
|
---|
1210 | * @brief Tx Transfer completed callbacks.
|
---|
1211 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1212 | * the configuration information for the specified USART module.
|
---|
1213 | * @retval None
|
---|
1214 | */
|
---|
1215 | __weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart)
|
---|
1216 | {
|
---|
1217 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
1218 | the HAL_USART_TxCpltCallback could be implemented in the user file
|
---|
1219 | */
|
---|
1220 | }
|
---|
1221 |
|
---|
1222 | /**
|
---|
1223 | * @brief Tx Half Transfer completed callbacks.
|
---|
1224 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1225 | * the configuration information for the specified USART module.
|
---|
1226 | * @retval None
|
---|
1227 | */
|
---|
1228 | __weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart)
|
---|
1229 | {
|
---|
1230 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
1231 | the HAL_USART_TxCpltCallback could be implemented in the user file
|
---|
1232 | */
|
---|
1233 | }
|
---|
1234 |
|
---|
1235 | /**
|
---|
1236 | * @brief Rx Transfer completed callbacks.
|
---|
1237 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1238 | * the configuration information for the specified USART module.
|
---|
1239 | * @retval None
|
---|
1240 | */
|
---|
1241 | __weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart)
|
---|
1242 | {
|
---|
1243 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
1244 | the HAL_USART_TxCpltCallback could be implemented in the user file
|
---|
1245 | */
|
---|
1246 | }
|
---|
1247 |
|
---|
1248 | /**
|
---|
1249 | * @brief Rx Half Transfer completed callbacks.
|
---|
1250 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1251 | * the configuration information for the specified USART module.
|
---|
1252 | * @retval None
|
---|
1253 | */
|
---|
1254 | __weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart)
|
---|
1255 | {
|
---|
1256 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
1257 | the HAL_USART_TxCpltCallback could be implemented in the user file
|
---|
1258 | */
|
---|
1259 | }
|
---|
1260 |
|
---|
1261 | /**
|
---|
1262 | * @brief Tx/Rx Transfers completed callback for the non-blocking process.
|
---|
1263 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1264 | * the configuration information for the specified USART module.
|
---|
1265 | * @retval None
|
---|
1266 | */
|
---|
1267 | __weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart)
|
---|
1268 | {
|
---|
1269 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
1270 | the HAL_USART_TxCpltCallback could be implemented in the user file
|
---|
1271 | */
|
---|
1272 | }
|
---|
1273 |
|
---|
1274 | /**
|
---|
1275 | * @brief USART error callbacks.
|
---|
1276 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1277 | * the configuration information for the specified USART module.
|
---|
1278 | * @retval None
|
---|
1279 | */
|
---|
1280 | __weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart)
|
---|
1281 | {
|
---|
1282 | /* NOTE: This function Should not be modified, when the callback is needed,
|
---|
1283 | the HAL_USART_ErrorCallback could be implemented in the user file
|
---|
1284 | */
|
---|
1285 | }
|
---|
1286 |
|
---|
1287 | /**
|
---|
1288 | * @}
|
---|
1289 | */
|
---|
1290 |
|
---|
1291 | /** @defgroup USART_Exported_Functions_Group3 Peripheral State and Errors functions
|
---|
1292 | * @brief USART State and Errors functions
|
---|
1293 | *
|
---|
1294 | @verbatim
|
---|
1295 | ==============================================================================
|
---|
1296 | ##### Peripheral State and Errors functions #####
|
---|
1297 | ==============================================================================
|
---|
1298 | [..]
|
---|
1299 | This subsection provides a set of functions allowing to return the State of
|
---|
1300 | USART communication
|
---|
1301 | process, return Peripheral Errors occurred during communication process
|
---|
1302 | (+) HAL_USART_GetState() API can be helpful to check in run-time the state
|
---|
1303 | of the USART peripheral.
|
---|
1304 | (+) HAL_USART_GetError() check in run-time errors that could be occurred during
|
---|
1305 | communication.
|
---|
1306 | @endverbatim
|
---|
1307 | * @{
|
---|
1308 | */
|
---|
1309 |
|
---|
1310 | /**
|
---|
1311 | * @brief Returns the USART state.
|
---|
1312 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1313 | * the configuration information for the specified USART module.
|
---|
1314 | * @retval HAL state
|
---|
1315 | */
|
---|
1316 | HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart)
|
---|
1317 | {
|
---|
1318 | return husart->State;
|
---|
1319 | }
|
---|
1320 |
|
---|
1321 | /**
|
---|
1322 | * @brief Return the USART error code
|
---|
1323 | * @param husart : pointer to a USART_HandleTypeDef structure that contains
|
---|
1324 | * the configuration information for the specified USART.
|
---|
1325 | * @retval USART Error Code
|
---|
1326 | */
|
---|
1327 | uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart)
|
---|
1328 | {
|
---|
1329 | return husart->ErrorCode;
|
---|
1330 | }
|
---|
1331 |
|
---|
1332 | /**
|
---|
1333 | * @}
|
---|
1334 | */
|
---|
1335 |
|
---|
1336 |
|
---|
1337 | /**
|
---|
1338 | * @brief DMA USART transmit process complete callback.
|
---|
1339 | * @param hdma: DMA handle
|
---|
1340 | * @retval None
|
---|
1341 | */
|
---|
1342 | static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
|
---|
1343 | {
|
---|
1344 | USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
---|
1345 | /* DMA Normal mode */
|
---|
1346 | if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
|
---|
1347 | {
|
---|
1348 | husart->TxXferCount = 0;
|
---|
1349 | if(husart->State == HAL_USART_STATE_BUSY_TX)
|
---|
1350 | {
|
---|
1351 | /* Disable the DMA transfer for transmit request by resetting the DMAT bit
|
---|
1352 | in the USART CR3 register */
|
---|
1353 | CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
|
---|
1354 |
|
---|
1355 | /* Enable the USART Transmit Complete Interrupt */
|
---|
1356 | __HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
---|
1357 | }
|
---|
1358 | }
|
---|
1359 | /* DMA Circular mode */
|
---|
1360 | else
|
---|
1361 | {
|
---|
1362 | if(husart->State == HAL_USART_STATE_BUSY_TX)
|
---|
1363 | {
|
---|
1364 | HAL_USART_TxCpltCallback(husart);
|
---|
1365 | }
|
---|
1366 | }
|
---|
1367 | }
|
---|
1368 |
|
---|
1369 | /**
|
---|
1370 | * @brief DMA USART transmit process half complete callback
|
---|
1371 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
|
---|
1372 | * the configuration information for the specified DMA module.
|
---|
1373 | * @retval None
|
---|
1374 | */
|
---|
1375 | static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
|
---|
1376 | {
|
---|
1377 | USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
1378 |
|
---|
1379 | HAL_USART_TxHalfCpltCallback(husart);
|
---|
1380 | }
|
---|
1381 |
|
---|
1382 | /**
|
---|
1383 | * @brief DMA USART receive process complete callback.
|
---|
1384 | * @param hdma: DMA handle
|
---|
1385 | * @retval None
|
---|
1386 | */
|
---|
1387 | static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
|
---|
1388 | {
|
---|
1389 | USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
---|
1390 | /* DMA Normal mode */
|
---|
1391 | if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
|
---|
1392 | {
|
---|
1393 | husart->RxXferCount = 0;
|
---|
1394 | if(husart->State == HAL_USART_STATE_BUSY_RX)
|
---|
1395 | {
|
---|
1396 | /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit
|
---|
1397 | in the USART CR3 register */
|
---|
1398 | husart->Instance->CR3 &= ~(USART_CR3_DMAR);
|
---|
1399 |
|
---|
1400 | husart->State= HAL_USART_STATE_READY;
|
---|
1401 | HAL_USART_RxCpltCallback(husart);
|
---|
1402 | }
|
---|
1403 | /* The USART state is HAL_USART_STATE_BUSY_TX_RX */
|
---|
1404 | else
|
---|
1405 | {
|
---|
1406 | /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit
|
---|
1407 | in the USART CR3 register */
|
---|
1408 | husart->Instance->CR3 &= ~(USART_CR3_DMAR);
|
---|
1409 | husart->Instance->CR3 &= ~(USART_CR3_DMAT);
|
---|
1410 |
|
---|
1411 | husart->State= HAL_USART_STATE_READY;
|
---|
1412 | HAL_USART_TxRxCpltCallback(husart);
|
---|
1413 | }
|
---|
1414 | }
|
---|
1415 | /* DMA circular mode */
|
---|
1416 | else
|
---|
1417 | {
|
---|
1418 | if(husart->State == HAL_USART_STATE_BUSY_RX)
|
---|
1419 | {
|
---|
1420 | HAL_USART_RxCpltCallback(husart);
|
---|
1421 | }
|
---|
1422 | /* The USART state is HAL_USART_STATE_BUSY_TX_RX */
|
---|
1423 | else
|
---|
1424 | {
|
---|
1425 | HAL_USART_TxRxCpltCallback(husart);
|
---|
1426 | }
|
---|
1427 | }
|
---|
1428 | }
|
---|
1429 |
|
---|
1430 | /**
|
---|
1431 | * @brief DMA USART receive process half complete callback
|
---|
1432 | * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
|
---|
1433 | * the configuration information for the specified DMA module.
|
---|
1434 | * @retval None
|
---|
1435 | */
|
---|
1436 | static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
|
---|
1437 | {
|
---|
1438 | USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
1439 |
|
---|
1440 | HAL_USART_RxHalfCpltCallback(husart);
|
---|
1441 | }
|
---|
1442 |
|
---|
1443 | /**
|
---|
1444 | * @brief DMA USART communication error callback.
|
---|
1445 | * @param hdma: DMA handle
|
---|
1446 | * @retval None
|
---|
1447 | */
|
---|
1448 | static void USART_DMAError(DMA_HandleTypeDef *hdma)
|
---|
1449 | {
|
---|
1450 | USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
|
---|
1451 |
|
---|
1452 | husart->RxXferCount = 0;
|
---|
1453 | husart->TxXferCount = 0;
|
---|
1454 | husart->ErrorCode |= HAL_USART_ERROR_DMA;
|
---|
1455 | husart->State= HAL_USART_STATE_READY;
|
---|
1456 |
|
---|
1457 | HAL_USART_ErrorCallback(husart);
|
---|
1458 | }
|
---|
1459 |
|
---|
1460 | /**
|
---|
1461 | * @brief This function handles USART Communication Timeout.
|
---|
1462 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1463 | * the configuration information for the specified USART module.
|
---|
1464 | * @param Flag: specifies the USART flag to check.
|
---|
1465 | * @param Status: The new Flag status (SET or RESET).
|
---|
1466 | * @param Timeout: Timeout duration
|
---|
1467 | * @retval HAL status
|
---|
1468 | */
|
---|
1469 | static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
|
---|
1470 | {
|
---|
1471 | uint32_t tickstart = 0;
|
---|
1472 |
|
---|
1473 | /* Get tick */
|
---|
1474 | tickstart = HAL_GetTick();
|
---|
1475 |
|
---|
1476 | /* Wait until flag is set */
|
---|
1477 | if(Status == RESET)
|
---|
1478 | {
|
---|
1479 | while(__HAL_USART_GET_FLAG(husart, Flag) == RESET)
|
---|
1480 | {
|
---|
1481 | /* Check for the Timeout */
|
---|
1482 | if(Timeout != HAL_MAX_DELAY)
|
---|
1483 | {
|
---|
1484 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
1485 | {
|
---|
1486 | /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
|
---|
1487 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
---|
1488 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
|
---|
1489 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE);
|
---|
1490 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
|
---|
1491 |
|
---|
1492 | husart->State= HAL_USART_STATE_READY;
|
---|
1493 |
|
---|
1494 | /* Process Unlocked */
|
---|
1495 | __HAL_UNLOCK(husart);
|
---|
1496 |
|
---|
1497 | return HAL_TIMEOUT;
|
---|
1498 | }
|
---|
1499 | }
|
---|
1500 | }
|
---|
1501 | }
|
---|
1502 | else
|
---|
1503 | {
|
---|
1504 | while(__HAL_USART_GET_FLAG(husart, Flag) != RESET)
|
---|
1505 | {
|
---|
1506 | /* Check for the Timeout */
|
---|
1507 | if(Timeout != HAL_MAX_DELAY)
|
---|
1508 | {
|
---|
1509 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
1510 | {
|
---|
1511 | /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
|
---|
1512 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
---|
1513 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
|
---|
1514 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE);
|
---|
1515 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
|
---|
1516 |
|
---|
1517 | husart->State= HAL_USART_STATE_READY;
|
---|
1518 |
|
---|
1519 | /* Process Unlocked */
|
---|
1520 | __HAL_UNLOCK(husart);
|
---|
1521 |
|
---|
1522 | return HAL_TIMEOUT;
|
---|
1523 | }
|
---|
1524 | }
|
---|
1525 | }
|
---|
1526 | }
|
---|
1527 | return HAL_OK;
|
---|
1528 | }
|
---|
1529 |
|
---|
1530 |
|
---|
1531 | /**
|
---|
1532 | * @brief Simplex Send an amount of data in non-blocking mode.
|
---|
1533 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1534 | * the configuration information for the specified USART module.
|
---|
1535 | * @retval HAL status
|
---|
1536 | * @note The USART errors are not managed to avoid the overrun error.
|
---|
1537 | */
|
---|
1538 | static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart)
|
---|
1539 | {
|
---|
1540 | uint16_t* tmp;
|
---|
1541 |
|
---|
1542 | if(husart->State == HAL_USART_STATE_BUSY_TX)
|
---|
1543 | {
|
---|
1544 | if(husart->Init.WordLength == USART_WORDLENGTH_9B)
|
---|
1545 | {
|
---|
1546 | tmp = (uint16_t*) husart->pTxBuffPtr;
|
---|
1547 | husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
|
---|
1548 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
1549 | {
|
---|
1550 | husart->pTxBuffPtr += 2;
|
---|
1551 | }
|
---|
1552 | else
|
---|
1553 | {
|
---|
1554 | husart->pTxBuffPtr += 1;
|
---|
1555 | }
|
---|
1556 | }
|
---|
1557 | else
|
---|
1558 | {
|
---|
1559 | husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF);
|
---|
1560 | }
|
---|
1561 |
|
---|
1562 | if(--husart->TxXferCount == 0)
|
---|
1563 | {
|
---|
1564 | /* Disable the USART Transmit data register empty Interrupt */
|
---|
1565 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
---|
1566 |
|
---|
1567 | /* Enable the USART Transmit Complete Interrupt */
|
---|
1568 | __HAL_USART_ENABLE_IT(husart, USART_IT_TC);
|
---|
1569 | }
|
---|
1570 | return HAL_OK;
|
---|
1571 | }
|
---|
1572 | else
|
---|
1573 | {
|
---|
1574 | return HAL_BUSY;
|
---|
1575 | }
|
---|
1576 | }
|
---|
1577 |
|
---|
1578 | /**
|
---|
1579 | * @brief Wraps up transmission in non blocking mode.
|
---|
1580 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1581 | * the configuration information for the specified USART module.
|
---|
1582 | * @retval HAL status
|
---|
1583 | */
|
---|
1584 | static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart)
|
---|
1585 | {
|
---|
1586 | /* Disable the USART Transmit Complete Interrupt */
|
---|
1587 | __HAL_USART_DISABLE_IT(husart, USART_IT_TC);
|
---|
1588 |
|
---|
1589 | /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
1590 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
|
---|
1591 |
|
---|
1592 | husart->State = HAL_USART_STATE_READY;
|
---|
1593 |
|
---|
1594 | HAL_USART_TxCpltCallback(husart);
|
---|
1595 |
|
---|
1596 | return HAL_OK;
|
---|
1597 | }
|
---|
1598 |
|
---|
1599 | /**
|
---|
1600 | * @brief Simplex Receive an amount of data in non-blocking mode.
|
---|
1601 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1602 | * the configuration information for the specified USART module.
|
---|
1603 | * @retval HAL status
|
---|
1604 | */
|
---|
1605 | static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart)
|
---|
1606 | {
|
---|
1607 | uint16_t* tmp;
|
---|
1608 | if(husart->State == HAL_USART_STATE_BUSY_RX)
|
---|
1609 | {
|
---|
1610 | if(husart->Init.WordLength == USART_WORDLENGTH_9B)
|
---|
1611 | {
|
---|
1612 | tmp = (uint16_t*) husart->pRxBuffPtr;
|
---|
1613 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
1614 | {
|
---|
1615 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
|
---|
1616 | husart->pRxBuffPtr += 2;
|
---|
1617 | }
|
---|
1618 | else
|
---|
1619 | {
|
---|
1620 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);
|
---|
1621 | husart->pRxBuffPtr += 1;
|
---|
1622 | }
|
---|
1623 | if(--husart->RxXferCount != 0x00)
|
---|
1624 | {
|
---|
1625 | /* Send dummy byte in order to generate the clock for the slave to send the next data */
|
---|
1626 | husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);
|
---|
1627 | }
|
---|
1628 | }
|
---|
1629 | else
|
---|
1630 | {
|
---|
1631 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
1632 | {
|
---|
1633 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
|
---|
1634 | }
|
---|
1635 | else
|
---|
1636 | {
|
---|
1637 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);
|
---|
1638 | }
|
---|
1639 |
|
---|
1640 | if(--husart->RxXferCount != 0x00)
|
---|
1641 | {
|
---|
1642 | /* Send dummy byte in order to generate the clock for the slave to send the next data */
|
---|
1643 | husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF);
|
---|
1644 | }
|
---|
1645 | }
|
---|
1646 |
|
---|
1647 | if(husart->RxXferCount == 0)
|
---|
1648 | {
|
---|
1649 | /* Disable the USART RXNE Interrupt */
|
---|
1650 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
|
---|
1651 |
|
---|
1652 | /* Disable the USART Parity Error Interrupt */
|
---|
1653 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE);
|
---|
1654 |
|
---|
1655 | /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
1656 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
|
---|
1657 |
|
---|
1658 | husart->State = HAL_USART_STATE_READY;
|
---|
1659 | HAL_USART_RxCpltCallback(husart);
|
---|
1660 |
|
---|
1661 | return HAL_OK;
|
---|
1662 | }
|
---|
1663 | return HAL_OK;
|
---|
1664 | }
|
---|
1665 | else
|
---|
1666 | {
|
---|
1667 | return HAL_BUSY;
|
---|
1668 | }
|
---|
1669 | }
|
---|
1670 |
|
---|
1671 | /**
|
---|
1672 | * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
|
---|
1673 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1674 | * the configuration information for the specified USART module.
|
---|
1675 | * @retval HAL status
|
---|
1676 | */
|
---|
1677 | static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart)
|
---|
1678 | {
|
---|
1679 | uint16_t* tmp;
|
---|
1680 |
|
---|
1681 | if(husart->State == HAL_USART_STATE_BUSY_TX_RX)
|
---|
1682 | {
|
---|
1683 | if(husart->TxXferCount != 0x00)
|
---|
1684 | {
|
---|
1685 | if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET)
|
---|
1686 | {
|
---|
1687 | if(husart->Init.WordLength == USART_WORDLENGTH_9B)
|
---|
1688 | {
|
---|
1689 | tmp = (uint16_t*) husart->pTxBuffPtr;
|
---|
1690 | husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
|
---|
1691 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
1692 | {
|
---|
1693 | husart->pTxBuffPtr += 2;
|
---|
1694 | }
|
---|
1695 | else
|
---|
1696 | {
|
---|
1697 | husart->pTxBuffPtr += 1;
|
---|
1698 | }
|
---|
1699 | }
|
---|
1700 | else
|
---|
1701 | {
|
---|
1702 | husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF);
|
---|
1703 | }
|
---|
1704 | husart->TxXferCount--;
|
---|
1705 |
|
---|
1706 | /* Check the latest data transmitted */
|
---|
1707 | if(husart->TxXferCount == 0)
|
---|
1708 | {
|
---|
1709 | __HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
|
---|
1710 | }
|
---|
1711 | }
|
---|
1712 | }
|
---|
1713 |
|
---|
1714 | if(husart->RxXferCount != 0x00)
|
---|
1715 | {
|
---|
1716 | if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET)
|
---|
1717 | {
|
---|
1718 | if(husart->Init.WordLength == USART_WORDLENGTH_9B)
|
---|
1719 | {
|
---|
1720 | tmp = (uint16_t*) husart->pRxBuffPtr;
|
---|
1721 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
1722 | {
|
---|
1723 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
|
---|
1724 | husart->pRxBuffPtr += 2;
|
---|
1725 | }
|
---|
1726 | else
|
---|
1727 | {
|
---|
1728 | *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);
|
---|
1729 | husart->pRxBuffPtr += 1;
|
---|
1730 | }
|
---|
1731 | }
|
---|
1732 | else
|
---|
1733 | {
|
---|
1734 | if(husart->Init.Parity == USART_PARITY_NONE)
|
---|
1735 | {
|
---|
1736 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
|
---|
1737 | }
|
---|
1738 | else
|
---|
1739 | {
|
---|
1740 | *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);
|
---|
1741 | }
|
---|
1742 | }
|
---|
1743 | husart->RxXferCount--;
|
---|
1744 | }
|
---|
1745 | }
|
---|
1746 |
|
---|
1747 | /* Check the latest data received */
|
---|
1748 | if(husart->RxXferCount == 0)
|
---|
1749 | {
|
---|
1750 | __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
|
---|
1751 |
|
---|
1752 | /* Disable the USART Parity Error Interrupt */
|
---|
1753 | __HAL_USART_DISABLE_IT(husart, USART_IT_PE);
|
---|
1754 |
|
---|
1755 | /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
|
---|
1756 | __HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
|
---|
1757 |
|
---|
1758 | husart->State = HAL_USART_STATE_READY;
|
---|
1759 |
|
---|
1760 | HAL_USART_TxRxCpltCallback(husart);
|
---|
1761 |
|
---|
1762 | return HAL_OK;
|
---|
1763 | }
|
---|
1764 |
|
---|
1765 | return HAL_OK;
|
---|
1766 | }
|
---|
1767 | else
|
---|
1768 | {
|
---|
1769 | return HAL_BUSY;
|
---|
1770 | }
|
---|
1771 | }
|
---|
1772 |
|
---|
1773 | /**
|
---|
1774 | * @brief Configures the USART peripheral.
|
---|
1775 | * @param husart: pointer to a USART_HandleTypeDef structure that contains
|
---|
1776 | * the configuration information for the specified USART module.
|
---|
1777 | * @retval None
|
---|
1778 | */
|
---|
1779 | static void USART_SetConfig(USART_HandleTypeDef *husart)
|
---|
1780 | {
|
---|
1781 | uint32_t tmpreg = 0x00;
|
---|
1782 |
|
---|
1783 | /* Check the parameters */
|
---|
1784 | assert_param(IS_USART_INSTANCE(husart->Instance));
|
---|
1785 | assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity));
|
---|
1786 | assert_param(IS_USART_PHASE(husart->Init.CLKPhase));
|
---|
1787 | assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit));
|
---|
1788 | assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate));
|
---|
1789 | assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength));
|
---|
1790 | assert_param(IS_USART_STOPBITS(husart->Init.StopBits));
|
---|
1791 | assert_param(IS_USART_PARITY(husart->Init.Parity));
|
---|
1792 | assert_param(IS_USART_MODE(husart->Init.Mode));
|
---|
1793 |
|
---|
1794 | /* The LBCL, CPOL and CPHA bits have to be selected when both the transmitter and the
|
---|
1795 | receiver are disabled (TE=RE=0) to ensure that the clock pulses function correctly. */
|
---|
1796 | husart->Instance->CR1 &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
|
---|
1797 |
|
---|
1798 | /*---------------------------- USART CR2 Configuration ---------------------*/
|
---|
1799 | tmpreg = husart->Instance->CR2;
|
---|
1800 | /* Clear CLKEN, CPOL, CPHA and LBCL bits */
|
---|
1801 | tmpreg &= (uint32_t)~((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP));
|
---|
1802 | /* Configure the USART Clock, CPOL, CPHA and LastBit -----------------------*/
|
---|
1803 | /* Set CPOL bit according to husart->Init.CLKPolarity value */
|
---|
1804 | /* Set CPHA bit according to husart->Init.CLKPhase value */
|
---|
1805 | /* Set LBCL bit according to husart->Init.CLKLastBit value */
|
---|
1806 | /* Set Stop Bits: Set STOP[13:12] bits according to husart->Init.StopBits value */
|
---|
1807 | tmpreg |= (uint32_t)(USART_CLOCK_ENABLE| husart->Init.CLKPolarity |
|
---|
1808 | husart->Init.CLKPhase| husart->Init.CLKLastBit | husart->Init.StopBits);
|
---|
1809 | /* Write to USART CR2 */
|
---|
1810 | husart->Instance->CR2 = (uint32_t)tmpreg;
|
---|
1811 |
|
---|
1812 | /*-------------------------- USART CR1 Configuration -----------------------*/
|
---|
1813 | tmpreg = husart->Instance->CR1;
|
---|
1814 |
|
---|
1815 | /* Clear M, PCE, PS, TE, RE and OVER8 bits */
|
---|
1816 | tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \
|
---|
1817 | USART_CR1_RE | USART_CR1_OVER8));
|
---|
1818 |
|
---|
1819 | /* Configure the USART Word Length, Parity and mode:
|
---|
1820 | Set the M bits according to husart->Init.WordLength value
|
---|
1821 | Set PCE and PS bits according to husart->Init.Parity value
|
---|
1822 | Set TE and RE bits according to husart->Init.Mode value
|
---|
1823 | Force OVER8 bit to 1 in order to reach the max USART frequencies */
|
---|
1824 | tmpreg |= (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8;
|
---|
1825 |
|
---|
1826 | /* Write to USART CR1 */
|
---|
1827 | husart->Instance->CR1 = (uint32_t)tmpreg;
|
---|
1828 |
|
---|
1829 | /*-------------------------- USART CR3 Configuration -----------------------*/
|
---|
1830 | /* Clear CTSE and RTSE bits */
|
---|
1831 | husart->Instance->CR3 &= (uint32_t)~((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE));
|
---|
1832 |
|
---|
1833 | /*-------------------------- USART BRR Configuration -----------------------*/
|
---|
1834 | if((husart->Instance == USART1) || (husart->Instance == USART6))
|
---|
1835 | {
|
---|
1836 | husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate);
|
---|
1837 | }
|
---|
1838 | else
|
---|
1839 | {
|
---|
1840 | husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK1Freq(), husart->Init.BaudRate);
|
---|
1841 | }
|
---|
1842 | }
|
---|
1843 |
|
---|
1844 | /**
|
---|
1845 | * @}
|
---|
1846 | */
|
---|
1847 |
|
---|
1848 | #endif /* HAL_USART_MODULE_ENABLED */
|
---|
1849 | /**
|
---|
1850 | * @}
|
---|
1851 | */
|
---|
1852 |
|
---|
1853 | /**
|
---|
1854 | * @}
|
---|
1855 | */
|
---|
1856 |
|
---|
1857 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
---|