AB32VG1按键控制LED

摘要:写作用。定义绿灯的引脚，定义数据类型的key引脚，定义输出，定义key为输入，设置为高电平。循环它以保持程序运行。

用AB32VG1在RT-Thread Studio中写。

# include # include " board . h " int main(void){ uint 8 _ t green = rt _ pin _ get(" PE . 4 ")；//定义绿色LED灯的管脚，uint8_t为数据类型uint 8 _ t key = rt _ pin _ get(" pf . 1 ")；//定义key引脚RT _ pin _ mode(绿色，pin _ mode _ output)；//定义LED为输出rt _ pin _ mode (key，pin _ mode _ input _ pull up)；//定义按键进入rt_pin_write(绿色，PIN _ HIGH)；//将LED设置为高电平同时(1){ if(RT _ pin _ read(key)= = 1){ RT _ pin _ write(green，pin _ low)；} if(rt _ PIN _ read(key)= = 0){ rt _ PIN _ write(绿色，PIN _ HIGH)；}//while循环应该存在以保持程序运行}}