stm32 HAL UART DMA 发送

MCU  STM32H743IIT6

 

 

 

 

 

const uint8_t TEXT_TO_SEND[]={"ALIENTEK Apollo STM32H7 DMA "}; 
const uint8_t TEXT_TO_SEND2[]={"hello world!"}; 
extern UART_HandleTypeDef huart1;

int main(void)
{
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/* MCU Configuration--------------------------------------------------------*/

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* USER CODE BEGIN Init */

/* USER CODE END Init */

/* Configure the system clock */
SystemClock_Config();

/* USER CODE BEGIN SysInit */

/* USER CODE END SysInit */

/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */

/* USER CODE END 2 */

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
HAL_Delay(1000);
HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_0);
static int i = 0;
if(i++ % 2)
　　HAL_UART_Transmit_DMA(&huart1,TEXT_TO_SEND,sizeof(TEXT_TO_SEND));
else
　　HAL_UART_Transmit_DMA(&huart1,TEXT_TO_SEND2,sizeof(TEXT_TO_SEND2));

/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}