STM32G0學習手冊——FreeRTOS軟體定時器

1.建立好帶有printf-stdarg.c的FreeRTOS的工程

2.修改main.c檔案

/* USER CODE BEGIN Includes */

#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include <stdio.h>
#include <string.h>

/* USER CODE END Includes */
/* USER CODE BEGIN PV */
static TaskHandle_t AppTask_Handle = NULL;
static TimerHandle_t  Timer1_Handle = NULL;

extern int f_printf(const char *format, ...);

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

static void AppTaskCreate(void);
static void TimerCallback(void);

/* USER CODE END PFP */

int main(void)
{
  /*
   *
   */

  /* USER CODE BEGIN WHILE */
  UBaseType_t xReturn = pdFALSE;
  
	xReturn = xTaskCreate((TaskFunction_t)AppTaskCreate,
                        (const char *)  "APPTASKCREATE",
                        (uint16_t)      128,
                        (void *)        NULL,
                        (UBaseType_t)   1,
                        (TaskHandle_t *)&AppTask_Handle);

  if(xReturn != NULL)
	{
		f_printf("Task Create PASS.\r\n");
		vTaskStartScheduler();
	}
	
	
  while (1)
  {
    /* USER CODE END WHILE */

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


/* USER CODE BEGIN 4 */
static void AppTaskCreate(void)
{
	BaseType_t xReturn = pdFALSE;
	
	Timer1_Handle = xTimerCreate( (const char *) "TIMER1",(TickType_t)1000,
                          pdTRUE, (void*) 1,(TimerCallbackFunction_t)TimerCallback);
	
	if( Timer1_Handle !=NULL)
		f_printf("Timer1 Create PASS.\r\n");
	
	xReturn = xTimerStart(Timer1_Handle,0);
	
	if(xReturn != pdFALSE)
	{
		f_printf("Timer1 START.\r\n");
		vTaskDelete(AppTask_Handle);
	}
	
}
static void TimerCallback(void)
{
	HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_1);

}
/* USER CODE END 4 */