adi.🍕

In-class lab documentation

While learning about Arduino I/O in class, I made a simple LED blinking pattern. The code invokes a series of digial writes to different output pins (plus some delay so that the effect is visible to human eyes).

Code

void setup() {
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
}

void loop() {
  blinkers();
}

int DELAY = 50;

void blinkers() {
  writeWithDelay(2, HIGH);
  writeWithDelay(3, HIGH);
  writeWithDelay(4, HIGH);
  writeWithDelay(2, LOW);
  writeWithDelay(3, LOW);
  writeWithDelay(4, LOW);
  // reverse
  writeWithDelay(4, HIGH);
  writeWithDelay(3, HIGH);
  writeWithDelay(2, HIGH);
  writeWithDelay(4, LOW);
  writeWithDelay(3, LOW);
  writeWithDelay(2, LOW);
}

void writeWithDelay(int pin, int val) {
  digitalWrite(pin, val);
  delay(DELAY);
}