/* defined the LED0 pin: PA5 */#define LED0_PIN GET_PIN(A, 5)intmain(void){intcount=1;/* set LED0 pin mode to output */rt_pin_mode(LED0_PIN,PIN_MODE_OUTPUT);while(count++){rt_pin_write(LED0_PIN,PIN_HIGH);rt_thread_mdelay(500);rt_pin_write(LED0_PIN,PIN_LOW);rt_thread_mdelay(500);}returnRT_EOK;}