/* * (c) 2018 Christian Grieger * GNU GENERAL PUBLIC LICENSE * * Blinking between blue and red LED */ #define PIN_LED_BLUE 13 #define PIN_LED_RED 12 void setup() { pinMode(PIN_LED_BLUE, OUTPUT); pinMode(PIN_LED_RED, OUTPUT); } void loop() { digitalWrite(PIN_LED_BLUE, HIGH); digitalWrite(PIN_LED_RED, LOW); delay(250); digitalWrite(PIN_LED_BLUE, LOW); digitalWrite(PIN_LED_RED, HIGH); delay(250); }