cleaner code

software/software.ino

@@ -5,12 +5,7 @@
 #error should be running at 8MHz
 #endif
 
-void setup() {
-    pinMode(A0, INPUT_PULLUP);
-    Keyboard.begin();
-    Serial.begin(9600);
-    Serial.setTimeout(50);
-}
+#define PIN A0
 
 void goto_bootloader() {
     cli();
@@ -35,21 +30,42 @@ void check_blcmd() {
     }
 }
 
-void loop() {
-    while (digitalRead(A0) == HIGH) {
-        check_blcmd();
-        delay(100);
-    }
-
-    Keyboard.press(KEY_F14);
-    Keyboard.releaseAll();
-
-    while (digitalRead(A0) != HIGH) {
-        check_blcmd();
-        delay(100);
-    }
+void toggle() {}
 
+void turned_on() {
     Keyboard.press(KEY_F15);
     Keyboard.releaseAll();
+}
+
+void turned_off() {
+    Keyboard.press(KEY_F14);
+    Keyboard.releaseAll();
+}
+
+void setup() {
+    pinMode(PIN, INPUT_PULLUP);
+    Keyboard.begin();
+    Serial.begin(9600);
+    Serial.setTimeout(50);
+}
+
+
+void loop() {
+    static bool last_state = 0;
+
+    bool current_state = digitalRead(PIN);
+
+    if (last_state != current_state) {
+        toggle();
+        if (current_state)
+            turned_on();
+        else
+            turned_off();
+        last_state = current_state;
+    }
+
+
+    check_blcmd();
+    delay(100);
 
 }