STM32HAL庫學習之路練習：開啟三個序列槽中斷，配置設定優先級，傳輸資料不掉幀

#define UART1_IRQ
#define UART2_IRQ
#define UART3_IRQ
uint8_t IRQR1[]={"Welcome to UART1_IRQ\r\n"};
uint8_t IRQR2[]={"Welcome to UART2_IRQ\r\n"};
uint8_t IRQR3[]={"Welcome to UART3_IRQ\r\n"};
           

printf("Welcome to use UART1_IRQ\r\n");
		#ifdef UART1_IRQ
		HAL_UART_Receive_IT(&huart1, &Data1, 1);
    HAL_UART_Transmit_IT(&huart1, IRQR1, sizeof(IRQR1));//觸發中斷
		#endif
		#ifdef UART2_IRQ
		HAL_UART_Receive_IT(&huart2, &Data2, 1);
    HAL_UART_Transmit_IT(&huart2, IRQR2, sizeof(IRQR2));//觸發中斷
		#endif
		#ifdef UART3_IRQ
		HAL_UART_Receive_IT(&huart3, &Data3, 1);
    HAL_UART_Transmit_IT(&huart3, IRQR3, sizeof(IRQR3));//觸發中斷
		#endif
           

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
	#ifdef UART1_IRQ
	if(huart->Instance==USART1)
	{	 
	HAL_UART_Transmit(&huart1, &Data1, 1,0xfff);
  HAL_UART_Receive_IT(&huart1,&Data1, 1);
	}
	#endif
	#ifdef UART2_IRQ
	if(huart->Instance==USART2)
	{
	 HAL_UART_Transmit(&huart2, &Data2, 1,0xfff);
   HAL_UART_Receive_IT(&huart2,&Data2, 1);
	}
	#endif
	#ifdef UART3_IRQ	
	if(huart->Instance==USART3)
	{
	 HAL_UART_Transmit(&huart3, &Data3, 1,0xfff);
   HAL_UART_Receive_IT(&huart3,&Data3, 1);
	}
  #endif
}
           

優先級設定