diff options
Diffstat (limited to 'app/alarm.c')
-rw-r--r-- | app/alarm.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/app/alarm.c b/app/alarm.c new file mode 100644 index 0000000..ed503db --- /dev/null +++ b/app/alarm.c @@ -0,0 +1,35 @@ +#include "project.h" + +#define ALARM_LENGTH 30 + +EPOCH alarm; + +static void alarm_off (void) +{ + led5_set (0); +} + + +static void alarm_on (void) +{ + led5_set (1); +} + + + +void alarm_dispatch (void) +{ + uint64_t abs = ref_get(); + EPOCH d, e = ref_decompose (abs); + + d = time_epoch_sub (e, alarm); + + if ((d.s < 0) || (d.s > ALARM_LENGTH)) alarm_off(); + else alarm_on(); +} + + + + + + |