/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file usart.c * @brief This file provides code for the configuration * of the USART instances. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ #include "parameters.h" /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "usart.h" /* USER CODE BEGIN 0 */ UART_INFO rs485_info; uint32_t dmaRxBuf[UART_RECV_DATA_POOL_COUNT>>2]; uint32_t dmaTxBuf[UART_TRANSMIT_DATA_POOL_COUNT>>2]; /* USER CODE END 0 */ UART_HandleTypeDef huart1; UART_HandleTypeDef huart3; DMA_HandleTypeDef hdma_usart1_rx; DMA_HandleTypeDef hdma_usart1_tx; /* USART1 init function */ void MX_USART1_UART_Init(void) { /* USER CODE BEGIN USART1_Init 0 */ /* USER CODE END USART1_Init 0 */ /* USER CODE BEGIN USART1_Init 1 */ #if 0 /* USER CODE END USART1_Init 1 */ huart1.Instance = USART1; huart1.Init.BaudRate = 9600; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart1) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART1_Init 2 */ #endif huart1.Instance = USART1; switch(config->br_index){ case BaudRate_4800: huart1.Init.BaudRate = 4800; break; case BaudRate_9600: huart1.Init.BaudRate = 9600; break; case BaudRate_19200: huart1.Init.BaudRate = 19200; break; case BaudRate_38400: huart1.Init.BaudRate = 38400; break; case BaudRate_57600: huart1.Init.BaudRate = 57600; break; case BaudRate_115200: huart1.Init.BaudRate = 115200; break; case BaudRate_230400: huart1.Init.BaudRate = 230400; break; default: huart1.Init.BaudRate = 9600; break; }; huart1.Init.WordLength = UART_WORDLENGTH_8B; huart1.Init.StopBits = UART_STOPBITS_1; huart1.Init.Parity = UART_PARITY_NONE; huart1.Init.Mode = UART_MODE_TX_RX; huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart1.Init.OverSampling = UART_OVERSAMPLING_16; huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart1) != HAL_OK) { Error_Handler(); } rs485_info.dmasend_count = 0; rs485_info.recv_buffer = (uint8_t *)dmaRxBuf; rs485_info.send_buffer = (uint8_t *)dmaTxBuf; rs485_info.recv_len = 0; rs485_info.send_len = 0; __HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE);//使能IDLE中断 /* USER CODE END USART1_Init 2 */ } /* USART3 init function */ void MX_USART3_UART_Init(void) { /* USER CODE BEGIN USART3_Init 0 */ /* USER CODE END USART3_Init 0 */ /* USER CODE BEGIN USART3_Init 1 */ /* USER CODE END USART3_Init 1 */ huart3.Instance = USART3; huart3.Init.BaudRate = 115200; huart3.Init.WordLength = UART_WORDLENGTH_8B; huart3.Init.StopBits = UART_STOPBITS_1; huart3.Init.Parity = UART_PARITY_NONE; huart3.Init.Mode = UART_MODE_TX_RX; huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart3.Init.OverSampling = UART_OVERSAMPLING_16; huart3.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; huart3.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_UART_Init(&huart3) != HAL_OK) { Error_Handler(); } /* USER CODE BEGIN USART3_Init 2 */ /* USER CODE END USART3_Init 2 */ } void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspInit 0 */ /* USER CODE END USART1_MspInit 0 */ /** Initializes the peripherals clock */ PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1; PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) { Error_Handler(); } /* USART1 clock enable */ __HAL_RCC_USART1_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF7_USART1; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); /* USART1 DMA Init */ /* USART1_RX Init */ hdma_usart1_rx.Instance = DMA1_Channel5; hdma_usart1_rx.Init.Request = DMA_REQUEST_2; hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE; hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_usart1_rx.Init.Mode = DMA_NORMAL; hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW; if (HAL_DMA_Init(&hdma_usart1_rx) != HAL_OK) { Error_Handler(); } __HAL_LINKDMA(uartHandle,hdmarx,hdma_usart1_rx); /* USART1_TX Init */ hdma_usart1_tx.Instance = DMA1_Channel4; hdma_usart1_tx.Init.Request = DMA_REQUEST_2; hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH; hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE; hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_usart1_tx.Init.Mode = DMA_NORMAL; hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW; if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK) { Error_Handler(); } __HAL_LINKDMA(uartHandle,hdmatx,hdma_usart1_tx); /* USART1 interrupt Init */ HAL_NVIC_SetPriority(USART1_IRQn, 5, 0); HAL_NVIC_EnableIRQ(USART1_IRQn); /* USER CODE BEGIN USART1_MspInit 1 */ /* USER CODE END USART1_MspInit 1 */ } else if(uartHandle->Instance==USART3) { /* USER CODE BEGIN USART3_MspInit 0 */ /* USER CODE END USART3_MspInit 0 */ /** Initializes the peripherals clock */ PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART3; PeriphClkInit.Usart3ClockSelection = RCC_USART3CLKSOURCE_PCLK1; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) { Error_Handler(); } /* USART3 clock enable */ __HAL_RCC_USART3_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); /**USART3 GPIO Configuration PC4 ------> USART3_TX PC5 ------> USART3_RX */ GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF7_USART3; HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* USER CODE BEGIN USART3_MspInit 1 */ /* USER CODE END USART3_MspInit 1 */ } } void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle) { if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspDeInit 0 */ /* USER CODE END USART1_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_USART1_CLK_DISABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10); /* USART1 DMA DeInit */ HAL_DMA_DeInit(uartHandle->hdmarx); HAL_DMA_DeInit(uartHandle->hdmatx); /* USART1 interrupt Deinit */ HAL_NVIC_DisableIRQ(USART1_IRQn); /* USER CODE BEGIN USART1_MspDeInit 1 */ /* USER CODE END USART1_MspDeInit 1 */ } else if(uartHandle->Instance==USART3) { /* USER CODE BEGIN USART3_MspDeInit 0 */ /* USER CODE END USART3_MspDeInit 0 */ /* Peripheral clock disable */ __HAL_RCC_USART3_CLK_DISABLE(); /**USART3 GPIO Configuration PC4 ------> USART3_TX PC5 ------> USART3_RX */ HAL_GPIO_DeInit(GPIOC, GPIO_PIN_4|GPIO_PIN_5); /* USER CODE BEGIN USART3_MspDeInit 1 */ /* USER CODE END USART3_MspDeInit 1 */ } } /* USER CODE BEGIN 1 */ void rs485_TransmitData(uint8_t *pdata, uint16_t length) { if(HAL_UART_Transmit_DMA(&huart1, pdata,length)!= HAL_OK) //判断是否发鿁正常，如果出现异常则进入异常中断函敿 { Error_Handler(); //异常提醒 } } void rs485_ReceiveData(void) { rs485_info.recv_len=0; HAL_UART_Receive_DMA(&huart1,rs485_info.recv_buffer,UART_RECV_DATA_POOL_COUNT); //重新打开DMA接收 } #include #ifdef __GNUC__ #define PUTCHAR_PROTOTYPE int __io_putchar(int ch) #else #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) #endif PUTCHAR_PROTOTYPE { HAL_UART_Transmit(&huart3 , (uint8_t *)&ch, 1, 0xFFFF); return ch; } /* USER CODE END 1 */