Arduino控制3个LED循环亮灭

led-loop.c

const int redPin = 13;
const int yellowPin = 12;
const int bluePin = 11;

void setup() {
  pinMode(redPin, OUTPUT); // 设置3个LED的端口为输出
  pinMode(yellowPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
}

void loop() {
  digitalWrite(redPin, HIGH); // 点亮红灯
  delay(1000);
  digitalWrite(redPin, LOW); // 熄灭红灯
  digitalWrite(yellowPin, HIGH); // 点亮黄灯
  delay(1000);
  digitalWrite(yellowPin, LOW); // 熄灭黄灯
  digitalWrite(bluePin, HIGH); // 点亮蓝灯
  delay(1000);
  digitalWrite(bluePin, LOW); // 熄灭蓝灯
}