部分程序：
uint8_t aRxBuffer[1];
uint8_t UART1RxBuff[10],UART1RxBuffCount=0;
unsigned char g_flag=0;
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if(huart->Instance == USART3)
{
UART1RxBuff[UART1RxBuffCount++] = aRxBuffer[0];
if(UART1RxBuffCount <10)
{
HAL_UART_Receive_IT(&huart3, aRxBuffer,1);
}
else if(UART1RxBuffCount ==10)
{
UART1RxBuffCount=0;
g_flag=1;
}
}
}
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_USART3_UART_Init();
/* Initialize interrupts */
MX_NVIC_Init();
/* USER CODE BEGIN 2 */
printf("ST_CUBE SERI PORT \n\r");
HAL_UART_Receive_IT(&huart3, aRxBuffer,1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
if(g_flag == 1)
{
g_flag =0;
HAL_UART_Transmit_IT(&huart3,(uint8_t*)UART1RxBuff,sizeof(UART1RxBuff));
HAL_UART_Receive_IT(&huart3, aRxBuffer,1);
}
}
/* USER CODE END 3 */
}
注意 （1）HAL_UART_Receive_IT（）中如果緩存設置大於1，出現不進入接收中斷現象，沒弄清楚，所以改爲1，由自己寫相關緩存程序；
（2） 接收回調函數儘量內容少
（3） 測試穩定