SWO (Serial Wire Output) setting

cskimair 2024. 7. 23. 00:27

- main.c

...
/* USER CODE BEGIN PV */
uint8_t g_bPortStatus = 0;
uint8_t blueButtonStatus=0;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
static void MX_I2S3_Init(void);
static void MX_SPI1_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
  if(GPIO_Pin == GPIO_PIN_0) {
    //HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_0);
  //HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_12);
  blueButtonStatus = ~blueButtonStatus ;
  }
else if(GPIO_Pin == GPIO_PIN_1) {
  HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5);
  }
else if(GPIO_Pin == GPIO_PIN_4) {
  HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_6);
  }
}

// in Keil,  redefinition of fpuc is necessary
int fputc(int ch, FILE *f)
{
ITM_SendChar(ch);
return(ch);
}

//in CubeIDE, redefinition of _write is ncessary
int _write(int file, char *ptr, int len)
{
for(int i = 0; i < len; i++)
{
ITM_SendChar(*ptr++);
}
return len;
}
int k =0 , ret ;

void ITM_SendString(char *s)
{
while(*s)
ITM_SendChar(*s++);
}

uint8_t *data = "Hello World from USB CDC\n";

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
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_I2C1_Init();
  MX_I2S3_Init();
  MX_SPI1_Init();
  MX_USB_DEVICE_Init();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
    //HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_12);
  if( blueButtonStatus == SET)
  HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12 , 1) ;
  else
  HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12 , 0) ;

    HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_13);
    HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_14);
    HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_15);
    g_bPortStatus = HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_12);
    printf("swo printf:%d\n", k++);//redefinition of fputc required
    k=k%10;
  ITM_SendString("0123456789\n");
    ITM_SendChar('s');
    HAL_Delay(500);
   ret =CDC_Transmit_FS(data, strlen(data));
  HAL_Delay (1000);
  }
  /* USER CODE END 3 */
}// end of main