sw4stm32_use_semihosting

main.c

/**
  ******************************************************************************
  * @file    main.c
  * @author  yuqlid
  * @version V1.0
  * @date    23-Dece-2016
  * @brief   Default main function.
  ******************************************************************************
*/

#include "stm32f4xx.h"
#include "stm32f4_discovery.h"

extern void initialise_monitor_handles(void);

int main(void)
{
    uint8_t time = 0;
    initialise_monitor_handles();
 
    HAL_Init();

    BSP_LED_Init(LED3);

    for(;;){
      HAL_Delay(500);
      BSP_LED_Toggle(LED3);
      time++;
      printf("time = %d\n",time);
    }
}