| 1 | /**
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| 2 | ******************************************************************************
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| 3 | * File Name : USART.c
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| 4 | * Description : This file provides code for the configuration
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| 5 | * of the USART instances.
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| 6 | ******************************************************************************
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| 7 | * @attention
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| 8 | *
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| 9 | * <h2><center>© Copyright (c) 2020 STMicroelectronics.
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| 10 | * All rights reserved.</center></h2>
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| 11 | *
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| 12 | * This software component is licensed by ST under BSD 3-Clause license,
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| 13 | * the "License"; You may not use this file except in compliance with the
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| 14 | * License. You may obtain a copy of the License at:
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| 15 | * opensource.org/licenses/BSD-3-Clause
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| 16 | *
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| 17 | ******************************************************************************
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| 18 | */
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| 19 |
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| 20 | /* Includes ------------------------------------------------------------------*/
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| 21 | #include "usart.h"
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| 22 |
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| 23 | /* USER CODE BEGIN 0 */
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| 24 |
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| 25 | /* USER CODE END 0 */
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| 26 |
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| 27 | UART_HandleTypeDef huart1;
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| 28 |
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| 29 | /* USART1 init function */
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| 30 |
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| 31 | void MX_USART1_UART_Init(void)
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| 32 | {
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| 33 |
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| 34 | huart1.Instance = USART1;
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| 35 | huart1.Init.BaudRate = 115200;
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| 36 | huart1.Init.WordLength = UART_WORDLENGTH_9B;
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| 37 | huart1.Init.StopBits = UART_STOPBITS_1;
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| 38 | huart1.Init.Parity = UART_PARITY_EVEN;
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| 39 | huart1.Init.Mode = UART_MODE_TX_RX;
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| 40 | huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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| 41 | huart1.Init.OverSampling = UART_OVERSAMPLING_16;
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| 42 | huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
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| 43 | huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
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| 44 | huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
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| 45 | if (HAL_RS485Ex_Init(&huart1, UART_DE_POLARITY_HIGH, 0, 0) != HAL_OK)
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| 46 | {
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| 47 | Error_Handler();
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| 48 | }
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| 49 | if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
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| 50 | {
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| 51 | Error_Handler();
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| 52 | }
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| 53 | if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
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| 54 | {
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| 55 | Error_Handler();
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| 56 | }
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| 57 | if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
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| 58 | {
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| 59 | Error_Handler();
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| 60 | }
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| 61 |
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| 62 | }
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| 63 |
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| 64 | void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
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| 65 | {
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| 66 |
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| 67 | GPIO_InitTypeDef GPIO_InitStruct = {0};
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| 68 | if(uartHandle->Instance==USART1)
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| 69 | {
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| 70 | /* USER CODE BEGIN USART1_MspInit 0 */
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| 71 |
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| 72 | /* USER CODE END USART1_MspInit 0 */
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| 73 | /* USART1 clock enable */
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| 74 | __HAL_RCC_USART1_CLK_ENABLE();
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| 75 |
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| 76 | __HAL_RCC_GPIOB_CLK_ENABLE();
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| 77 | /**USART1 GPIO Configuration
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| 78 | PB3 ------> USART1_DE
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| 79 | PB6 ------> USART1_TX
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| 80 | PB7 ------> USART1_RX
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| 81 | */
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| 82 | // GPIO_InitStruct.Pin = GPIO_PIN_3;
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| 83 | // GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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| 84 | // GPIO_InitStruct.Pull = GPIO_NOPULL;
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| 85 | // GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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| 86 | // GPIO_InitStruct.Alternate = GPIO_AF4_USART1;
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| 87 | // HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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| 88 |
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| 89 | GPIO_InitStruct.Pin = RS485_R_Pin;
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| 90 | GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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| 91 | GPIO_InitStruct.Pull = GPIO_PULLUP;
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| 92 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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| 93 | GPIO_InitStruct.Alternate = GPIO_AF0_USART1;
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| 94 | HAL_GPIO_Init(RS485_R_GPIO_Port, &GPIO_InitStruct);
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| 95 |
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| 96 | GPIO_InitStruct.Pin = RS485_D_Pin;
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| 97 | GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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| 98 | GPIO_InitStruct.Pull = GPIO_NOPULL;
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| 99 | GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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| 100 | GPIO_InitStruct.Alternate = GPIO_AF0_USART1;
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| 101 | HAL_GPIO_Init(RS485_D_GPIO_Port, &GPIO_InitStruct);
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| 102 |
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| 103 | /* USART1 interrupt Init */
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| 104 | HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
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| 105 | HAL_NVIC_EnableIRQ(USART1_IRQn);
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| 106 | /* USER CODE BEGIN USART1_MspInit 1 */
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| 107 |
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| 108 | /* USER CODE END USART1_MspInit 1 */
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
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| 113 | {
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| 114 |
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| 115 | if(uartHandle->Instance==USART1)
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| 116 | {
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| 117 | /* USER CODE BEGIN USART1_MspDeInit 0 */
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| 118 |
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| 119 | /* USER CODE END USART1_MspDeInit 0 */
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| 120 | /* Peripheral clock disable */
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| 121 | __HAL_RCC_USART1_CLK_DISABLE();
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| 122 |
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| 123 | /**USART1 GPIO Configuration
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| 124 | PB3 ------> USART1_DE
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| 125 | PB6 ------> USART1_TX
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| 126 | PB7 ------> USART1_RX
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| 127 | */
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| 128 | HAL_GPIO_DeInit(GPIOB, RS485_R_Pin|RS485_D_Pin);
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| 129 |
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| 130 | /* USART1 interrupt Deinit */
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| 131 | HAL_NVIC_DisableIRQ(USART1_IRQn);
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| 132 | /* USER CODE BEGIN USART1_MspDeInit 1 */
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| 133 |
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| 134 | /* USER CODE END USART1_MspDeInit 1 */
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| 135 | }
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| 136 | }
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| 137 |
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| 138 | /* USER CODE BEGIN 1 */
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| 139 |
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| 140 | /* USER CODE END 1 */
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| 141 |
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| 142 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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