本帖最后由 YYY13941 于 2023-3-14 08:26 编辑
[C] 纯文本查看 复制代码 #include "bsp.h"
UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;
ALIGN_32BYTES(__attribute__((section (".RAM_D2"))) uint8_t RxBuff[512]);
__IO uint8_t RxNum = 0;
__IO uint8_t g_UartIsOK = 0;
//定义_sys_exit()以避免使用半主机模式
void _sys_exit(int x)
{
x = x;
}
//重定义fputc函数
int fputc(int ch, FILE *f)
{
while((USART1->ISR&0x40)==0);//循环发送,直到发送完毕
USART1->TDR=(uint8_t)ch;
return ch;
}
/* USART1 init function */
void bsp_InitUart(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.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler(__FILE__, __LINE__);
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler(__FILE__, __LINE__);
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler(__FILE__, __LINE__);
}
if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
{
Error_Handler(__FILE__, __LINE__);
}
__HAL_UART_ENABLE_IT(&huart1,UART_IT_IDLE);
}
void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
if(uartHandle->Instance==USART1)
{
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART1;
PeriphClkInitStruct.Usart16ClockSelection = RCC_USART16CLKSOURCE_D2PCLK2;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
{
Error_Handler(__FILE__, __LINE__);
}
/* USART1 clock enable */
__HAL_RCC_USART1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USART1 DMA Init */
__HAL_RCC_DMA1_CLK_ENABLE();
/* USART1_RX Init */
hdma_usart1_rx.Instance = DMA1_Stream0;
hdma_usart1_rx.Init.Request = DMA_REQUEST_USART1_RX;
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_CIRCULAR;
hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW;
hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
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_Stream1;
hdma_usart1_tx.Init.Request = DMA_REQUEST_USART1_TX;
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;
hdma_usart1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)
{
Error_Handler(__FILE__, __LINE__);
}
__HAL_LINKDMA(uartHandle,hdmatx,hdma_usart1_tx);
/* DMA1_Stream0_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream0_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream0_IRQn);
/* DMA1_Stream1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream1_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream1_IRQn);
/* USART1 interrupt Init */
HAL_NVIC_SetPriority(USART1_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(USART1_IRQn);
}
}
void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{
if(uartHandle->Instance==USART1)
{
__HAL_RCC_USART1_CLK_DISABLE();
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_10|GPIO_PIN_9);
HAL_DMA_DeInit(uartHandle->hdmarx);
HAL_DMA_DeInit(uartHandle->hdmatx);
HAL_NVIC_DisableIRQ(USART1_IRQn);
}
}
void DMA1_Stream0_IRQHandler(void)
{
HAL_DMA_IRQHandler(&hdma_usart1_rx);
}
void DMA1_Stream1_IRQHandler(void)
{
HAL_DMA_IRQHandler(&hdma_usart1_tx);
}
void USART1_IRQHandler(void)
{
if(__HAL_UART_GET_FLAG(&huart1,UART_FLAG_IDLE)==SET)
{
__HAL_UART_CLEAR_IDLEFLAG(&huart1);
HAL_UART_DMAStop(&huart1);
RxNum = 512 - __HAL_DMA_GET_COUNTER(&hdma_usart1_rx);
CmdPickUp(RxBuff,RxNum); //用户程序
memset(RxBuff,0,512);
HAL_UART_Receive_DMA(&huart1,RxBuff,512);
}
HAL_UART_IRQHandler(&huart1);
}
/* USER CODE BEGIN 1 */
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
if(huart->Instance==USART1)
{
}
}
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