Reduce the size of the main loop

prog/sources/setup-loop.cpp

@@ -1,22 +1,15 @@
 #include "all-headers.h"
 
-// Led L2 is connected to PORTD:7 (active high)
-
 void setup (USER_MODE) {
-	// Nothing to set up
-}
-
-void loop (USER_MODE) {
 	// Start
 	digitalWrite(L0_LED, true);
+}
 
+void loop (USER_MODE) {
 	// Wait...
 	busyWaitDuring(MODE_ 500);
 
 	// Shut down
-	digitalWrite(L0_LED, false);
-
-	// Wait...
-	busyWaitDuring(MODE_ 500);
+	digitalToggle(L0_LED);
 }