[简答题]串口控制开关灯当接收到数据“a”时,便点亮LED,并输出提示,当为“b”时,就关闭LED,

参考答案:int led = 13;
Void setup() {
Serial.begin(9600);
PinMode(13,OUTPUT);
}
Void loop() {
If(Serial.available()>0)
{
Char ch = Serial.read();
Serial.print(ch);
//开灯
If(ch == 'a')
{
DigitalWrite(led,HIGH);
Serial.println("turn on");
}
//关灯
Else if(ch == 'b')
{
DigitalWrite(led,LOW);
Serial.println("turn off");
}
}
}