usart.rar_HAL_cube usart_hal usart_hal 串口_串口通信

/** ****************************************************************************** * File Name : USART.c * Description : This file provides code for the configuration * of the USART instances. ****************************************************************************** ** This notice applies to any and all portions of this file * that are not between comment pairs USER CODE BEGIN and * USER CODE END. Other portions of this file, whether * inserted by the user or by software development tools * are owned by their respective copyright owners. * * COPYRIGHT(c) 2018 STMicroelectronics * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "usart.h" #include "gpio.h" #include "dma.h" /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ UART_HandleTypeDef huart1; DMA_HandleTypeDef hdma_usart1_rx; DMA_HandleTypeDef hdma_usart1_tx; /* USART1 init function */ void MX_USART1_UART_Init(void) { huart1.Instance = USART1; huart1.Init.BaudRate = 115200; 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(__FILE__, __LINE__); } } void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) { GPIO_InitTypeDef GPIO_InitStruct; if(uartHandle->Instance==USART1) { /* USER CODE BEGIN USART1_MspInit 0 */ /* USER CODE END USART1_MspInit 0 */ /* USART1 clock enable */ __HAL_RCC_USART1_CLK_ENABLE(); /**USART1 GPIO Configuration PA9 ------> USART1_TX PA10 ------> USART1_RX */ GPIO_InitStruct.Pin = UART_TX_Pin|UART_RX_Pin; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF4_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_3; 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(__FILE__, __LINE__); } __HAL_LINKDMA(uartHandle,hdmarx,hdma_usart1_rx); /* USART1_TX Init */ hdma_usart1_tx.Instance = DMA1_Channel4; hdma_usart1_tx.Init.Request = DMA_REQUEST_3; 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(__FILE__, __LINE__); } __HAL_LINKDMA(uartHandle,hdmatx,hdma_usart1_tx); /* USART1 interrupt Init */ HAL_NVIC_SetPriority(USART1_IRQn, 0, 0); HAL_NVIC_EnableIRQ(USART1_IRQn); /* USER CODE BEGIN USART1_MspInit 1 */ /* USER CODE END USART1_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, UART_TX_Pin|UART_RX_Pin); /* 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 */ } } /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/