（二）STM32L4（RT- Thread）——独立按键

目录

学习目标

成果展示

硬件知识

代码

总结

学习目标成果展示 成果展示视频

独立按键

硬件知识

代码

代码语言：javascript

代码运行次数：0

#include <rtthread.h>#include <rtdevice.h>#include <board.h>#define DBG_TAG "main"#define DBG_LVL DBG_LOG#include <rtdbg.h><p>int main(void){unsigned int count = 1;</p><pre class="brush:php;toolbar:false">/* 设置 RGB 灯引脚的模式为输出模式 */rt_pin_mode(PIN_LED_R, PIN_MODE_OUTPUT);rt_pin_mode(PIN_LED_G, PIN_MODE_OUTPUT);rt_pin_mode(PIN_LED_B, PIN_MODE_OUTPUT);/* 设置 KEY 引脚的模式为输入模式 */rt_pin_mode(PIN_KEY0, PIN_MODE_INPUT);rt_pin_mode(PIN_KEY1, PIN_MODE_INPUT);rt_pin_mode(PIN_KEY2, PIN_MODE_INPUT);while (count > 0){    /* 读取按键 KEY 的引脚状态 */    if (rt_pin_read(PIN_KEY0) == PIN_LOW)    {        rt_thread_mdelay(50);        if (rt_pin_read(PIN_KEY0) == PIN_LOW)        {            /* 按键已被按下，输出 log，点亮 LED 灯 */            LOG_D("KEY0 pressed!");            rt_pin_write(PIN_LED_R, PIN_LOW);        }    }    else if (rt_pin_read(PIN_KEY1) == PIN_LOW)    {        rt_thread_mdelay(50);        if (rt_pin_read(PIN_KEY1) == PIN_LOW)        {            /* 按键已被按下，输出 log，点亮 LED 灯 */            LOG_D("KEY1 pressed!");            rt_pin_write(PIN_LED_G, PIN_LOW);        }    }    else if (rt_pin_read(PIN_KEY2) == PIN_LOW)    {        rt_thread_mdelay(50);        if (rt_pin_read(PIN_KEY2) == PIN_LOW)        {            /* 按键已被按下，输出 log，点亮 LED 灯 */            LOG_D("KEY2 pressed!");            rt_pin_write(PIN_LED_B, PIN_LOW);        }    }    else    {        /* 按键没被按下，熄灭 LED 灯 */        rt_pin_write(PIN_LED_R, PIN_HIGH);        rt_pin_write(PIN_LED_G, PIN_HIGH);        rt_pin_write(PIN_LED_B, PIN_HIGH);    }    rt_thread_mdelay(10);    count++;}return 0;