Running stm32f407 on RT-Thread and enbale the LED

Forwarded from RT-Thread Community Developer luzixing

Hardware：

• At least 1 GPIO, which can be used to pick up LED lights
• 1 string of serial port, used to make the msh shell terminal

Software：

• Serial Port Driver
• PIN Driver

Preparation：

• Configure the PIN number of the development board LED light connection.

The implementation code:

#include <rtthread.h>
#include <rtdevice.h>

#define LED_PIN1     21
#define LED_PIN2     22

void led_link(void *parameter)
{
        rt_uint8_t count = 0;
        rt_pin_mode(LED_PIN1, PIN_MODE_OUTPUT);
        rt_pin_mode(LED_PIN2, PIN_MODE_OUTPUT);

        while (1)
        {
                /* led1 on */
                rt_kprintf("led on, count : %d <br>", count);
                count++;
                rt_pin_write(LED_PIN1, 0);
                rt_pin_write(LED_PIN2, 0);
                rt_thread_delay(RT_TICK_PER_SECOND / 2); /* ?? 500 ?? */
                
                /* led1 off */
                rt_kprintf("led off <br>");
                rt_pin_write(LED_PIN1, 1);
                rt_pin_write(LED_PIN2, 1);
                rt_thread_delay(RT_TICK_PER_SECOND / 2);
        }
}

MSH_CMD_EXPORT(led_link, led blink sample);

Process:

Experimental steps:

• Start by configuring the pins
• Set the pin to the output pin and turn on/ off the light by lighting its level.

Results:

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