better visibility of public/private/imported variables

Marlin/watchdog.pde

@@ -3,10 +3,37 @@
 #include  <avr/wdt.h>
 #include  <avr/interrupt.h>
 
+//===========================================================================
+//=============================private variables  ============================
+//===========================================================================
+
 static volatile uint8_t timeout_seconds=0;
 
 void(* ctrlaltdelete) (void) = 0; //does not work on my atmega2560
 
+//===========================================================================
+//=============================functinos         ============================
+//===========================================================================
+
+
+/// intialise watch dog with a 1 sec interrupt time
+void wd_init() 
+{
+  WDTCSR = (1<<WDCE )|(1<<WDE ); //allow changes
+  WDTCSR = (1<<WDIF)|(1<<WDIE)| (1<<WDCE )|(1<<WDE )|  (1<<WDP2 )|(1<<WDP1)|(0<<WDP0);
+}
+
+/// reset watchdog. MUST be called every 1s after init or avr will reset.
+void wd_reset() 
+{
+  wdt_reset();
+  timeout_seconds=0; //reset counter for resets
+}
+
+//===========================================================================
+//=============================ISR               ============================
+//===========================================================================
+
 //Watchdog timer interrupt, called if main program blocks >1sec
 ISR(WDT_vect) 
 { 
@@ -31,18 +58,4 @@ ISR(WDT_vect)
   }
 }
 
-/// intialise watch dog with a 1 sec interrupt time
-void wd_init() 
-{
-  WDTCSR = (1<<WDCE )|(1<<WDE ); //allow changes
-  WDTCSR = (1<<WDIF)|(1<<WDIE)| (1<<WDCE )|(1<<WDE )|  (1<<WDP2 )|(1<<WDP1)|(0<<WDP0);
-}
-
-/// reset watchdog. MUST be called every 1s after init or avr will reset.
-void wd_reset() 
-{
-  wdt_reset();
-  timeout_seconds=0; //reset counter for resets
-}
-
 #endif /* USE_WATCHDOG */