一. CubeMX設定
二. 代碼實作
（1）實作代碼重定向，使用printf列印資料，在usart.c中加入如下代碼
/* USER CODE BEGIN 1 */
//!=============================================================================
//! Function Define Section(as bellows)
//!=============================================================================
/*!
@Brief
Redirect the C library function printf to USARTx
@Param
ch [character to send]
f [file point]
@Return
ch [character to send]
*/
int fputc(int ch, FILE *f)
{
HAL_UART_Transmit(&huart2, (uint8_t *)&ch, 1, 0xffff);
return ch;
}
/*!
@Brief
Redirect the C library function getchar,scanf to USARTx
@Param
f [file point]
@Return
ch [character to receive]
*/
int fgetc(FILE *f)
{
uint8_t ch = 0;
HAL_UART_Receive(&huart2, &ch, 1, 0xffff);
return ch;
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if(huart->Instance == USART1)
{
//HAL_UART_Transmit(&huart1, (uint8_t *)Buffer, 16, 0xffff); //×èÈûģʽ
HAL_UART_Transmit_IT(&huart2, (uint8_t *)ucUSART_RecvBuffer, 16);
HAL_UART_Receive_IT(&huart2, (uint8_t *)ucUSART_RecvBuffer, 16);
}
}
/* USER CODE END 1 */
在usart.h中加入如下代碼
/* USER CODE BEGIN Includes */
#include <stdio.h>
/* USER CODE END Includes */
（2）main實作調用序列槽的程式
int main(void)
{
/* USER CODE BEGIN 1 */
uint8_t Data[5]={1, 2, 3, 4, 5}; //test code
uint16_t CanID=0x001;
/* 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_CAN1_Init();
MX_ADC1_Init();
MX_TIM2_Init();
MX_USART2_UART_Init();
/* USER CODE BEGIN 2 */
//Enable timer2
//HAL_TIM_Base_Start_IT(&htim2);
//Initialize CAN and filter and start the CAN
//CAN_User_Init(&hcan1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
//CANx_SendNormalData(&hcan1, CanID, Data, 5);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
float fData = 1.33;
int iData = 99;
char tx_buf[] = {"HelloWorld!"};
printf("App Start!!!!!!!!!!!\r\n");
printf("iData = %d\r\n", iData);
printf("fData = %f\r\n", fData);
//HAL_Delay(1000);
//HAL_UART_Transmit(&huart2, (unsigned char*)tx_buf, 11, 10);
HAL_Delay(1000);
}
/* USER CODE END 3 */
}