17. ZigBee

예제 1

char c = 'A';
int pingPong = 1;

void setup() {
  Serial.begin(9600);
  pinMode(9, OUTPUT);
}

void loop() {
  Serial.print(c);
  c = c + 1;
  if(c>'Z')
    c = 'A';

  if(pingPong == 0)
    digitalWrite(9, LOW);
  else
    digitalWrite(9, HIGH);

  pingPong = 1 - pingPong;
  delay(1000);
}