在ioc截面配置完成以后，添加了一段

/ USER CODE BEGIN 2 /

HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_SET);

/ USER CODE END 2 /

/ Infinite loop /

/ USER CODE BEGIN WHILE /

while (1)

{

/ USER CODE END WHILE /

/ USER CODE BEGIN 3 /

int x;

for(x=0;x<5;x++)

{

char str[] = "1234567890";

HAL_UART_Transmit(&huart1, (uint8_t *)str, 10, HAL_MAX_DELAY);

HAL_Delay(5000);

} 之后调试出现uwTickPrio() at 0x20000004提示，且串口只发送了一次1234567890