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Diffstat (limited to 'arduino_sketch/fuzzy_alarm_clock_ds1307')
-rw-r--r--arduino_sketch/fuzzy_alarm_clock_ds1307/fuzzy_alarm_clock_ds1307.pde12
1 files changed, 7 insertions, 5 deletions
diff --git a/arduino_sketch/fuzzy_alarm_clock_ds1307/fuzzy_alarm_clock_ds1307.pde b/arduino_sketch/fuzzy_alarm_clock_ds1307/fuzzy_alarm_clock_ds1307.pde
index 090f14e..1b5fd89 100644
--- a/arduino_sketch/fuzzy_alarm_clock_ds1307/fuzzy_alarm_clock_ds1307.pde
+++ b/arduino_sketch/fuzzy_alarm_clock_ds1307/fuzzy_alarm_clock_ds1307.pde
@@ -44,7 +44,7 @@
int st = 0; // alarm status (minutes from alarm - TIN)
char alarms[NALARMS][5]; // alarm settings
char cmin; // current minute
-int a = -1; // current alarm
+signed char a = -1; // current alarm
char dbg = 0; // print debug informations
bool ringing = false; // sound the alarm
bool pressed = false; // stop button status
@@ -88,10 +88,12 @@ void setup () {
cmin = RTC.readData(0x0a);
// This only works if the arduino had no power for a
// "short" time. This is by design. :D
- RTC.readClock();
- st = st + (RTC.getMinutes() - cmin) % 60;
- cmin = RTC.getMinutes();
- save_status();
+ if ( a >= 0 ) {
+ RTC.readClock();
+ st = st + (RTC.getMinutes() - cmin) % 60;
+ cmin = RTC.getMinutes();
+ save_status();
+ }
for ( int i = 0; i < NALARMS ; i ++ ) {
for ( int j = 0; j < 5 ; j ++ ) {
alarms[i][j] = RTC.readData(0x0b + i*5 + j);