main.c

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2020-06-05     thread-liu   first version
 */
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>

/* defined the LD8 pin: PD11 */
#define LED8_PIN    GET_PIN(D, 11)

int main(void) 
{
    int count = 1;
    /* set LD8 pin mode to output */
    rt_pin_mode(LED8_PIN, PIN_MODE_OUTPUT);
    
    while (count++)
    {
        rt_pin_write(LED8_PIN, PIN_HIGH);
        rt_thread_mdelay(500);    
        rt_pin_write(LED8_PIN, PIN_LOW);
        rt_thread_mdelay(500);
        rt_kprintf("Hello RT-Thread!\n");
    }
    
    return RT_EOK;
}