| 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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