From f7a48dc590f5e8bf2d6d9d92248734566c175cf2 Mon Sep 17 00:00:00 2001
From: Christian Koch <christian_koch@gmx.de>
Date: Sun, 6 May 2012 15:29:24 +0200
Subject: added hardware documentation, minor software changes

---
 timebase.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'timebase.c')

diff --git a/timebase.c b/timebase.c
index ea8f8b9..07a5fe7 100644
--- a/timebase.c
+++ b/timebase.c
@@ -2,10 +2,10 @@
 #include "timebase.h"
 
 							      // at 12MHz:
-#define T0COUNT     (XTAL / 1024 / 64)	                         // 183
-#define T0SECERR    (XTAL - 1024L * 64 * T0COUNT)	         // 6912
+#define T0COUNT     (F_CPU / 1024 / 64)	                         // 183
+#define T0SECERR    (F_CPU - 1024L * 64 * T0COUNT)	         // 6912
 #define T0COUNTSEC  (T0COUNT + T0SECERR / 1024)	                 // 189
-#define T0MINERR    (XTAL - 1024 * (63 * T0COUNT + T0COUNTSEC))  // 768
+#define T0MINERR    (F_CPU - 1024 * (63 * T0COUNT + T0COUNTSEC))  // 768
 #define T0COUNTMIN  (T0COUNTSEC + (T0MINERR * 60 + 512) / 1024)  // 234
 
 // 234 = 12000000 Hz
@@ -26,7 +26,7 @@ void timebase_init( void )
 
 extern uint8_t waitctr;
 
-SIGNAL (TIMER0_OVF0_vect)
+ISR (TIMER0_OVF0_vect)
 {
   static u8 dcf77_time, old_dcf77;
 					// DCF77 receive
-- 
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