blink

include/pins.h

@@ -0,0 +1,6 @@
+#ifndef PINS
+#define PINS
+
+#define LED 4
+
+#endif

src/main.cpp

@@ -1,18 +1,17 @@
 #include <Arduino.h>
 
-// put function declarations here:
-int myFunction(int, int);
+#include "pins.h"
+
+#define BLINKRATE 500
+
+long lastBlink = 0;
 
 void setup() {
-  // put your setup code here, to run once:
-  int result = myFunction(2, 3);
+    pinMode(LED, OUTPUT);
 }
 
 void loop() {
-  // put your main code here, to run repeatedly:
-}
-
-// put function definitions here:
-int myFunction(int x, int y) {
-  return x + y;
+    if ((millis() - lastBlink) > BLINKRATE) {
+        digitalWrite(LED, !digitalRead(LED));
+    }
 }