git.piffa.net Git - arduino/blob - books/ArduinoNextSteps-master/ArduinoNextSteps/sketch_04_05_square/sketch_04_05_square.ino

   1 // sketch_04_05_square
   2
   3 int outPin = 10;
   4 int state = 0;
   5
   6 void setup()
   7 {
   8   pinMode(outPin, OUTPUT);
   9 }
  10
  11 void loop()
  12 {
  13   digitalWrite(outPin, state);
  14   state = ! state;
  15 }
  16
  17