/* Change Logs: Date Author Notes  SummerGift first version  */
int main(void)
/* Change Logs: Date Author Notes  SummerGift first version  */
int main(void)
{
    rt_uint16_t led = rt_pin_get("PB.13");
    rt_pin_mode(led, PIN_MODE_OUTPUT);
    while (1)
    {
        rt_pin_write(led, PIN_HIGH);
        rt_thread_mdelay(500);
        rt_pin_write(led, PIN_LOW);
        rt_thread_mdelay(500);
    }
    return RT_EOK;
}