void AlarmClass::updateNextTrigger()
{
if( (value != 0) && Mode.isEnabled )
{
time_t time = now();
if( dtIsAlarm(Mode.alarmType) && nextTrigger <= time ) // update alarm if next trigger is not yet in the future
{
if(Mode.alarmType == dtExplicitAlarm ) // is the value a specific date and time in the future
{
nextTrigger = value; // yes, trigger on this value
}
else if(Mode.alarmType == dtDailyAlarm) //if this is a daily alarm
{
if( value + previousMidnight(now()) <= time)
{
nextTrigger = value + nextMidnight(time); // if time has passed then set for tomorrow
}
else
{
nextTrigger = value + previousMidnight(time); // set the date to today and add the time given in value
}
}
else if(Mode.alarmType == dtWeeklyAlarm) // if this is a weekly alarm
{
if( (value + previousSunday(now())) <= time)
{
nextTrigger = value + nextSunday(time); // if day has passed then set for the next week.
}
else
{
nextTrigger = value + previousSunday(time); // set the date to this week today and add the time given in value
}
}
else // its not a recognized alarm type - this should not happen
{
Mode.isEnabled = 0; // Disable the alarm
}
}
if( Mode.alarmType == dtTimer)
{
// its a timer
nextTrigger = time + value; // add the value to previous time (this ensures delay always at least Value seconds)
}
}
else
{
Mode.isEnabled = 0; // Disable if the value is 0
}
}
// attempt to create an alarm and return true if successful
AlarmID_t TimeAlarmsClass::create( time_t value, OnTick_t onTickHandler, uint8_t isOneShot, dtAlarmPeriod_t alarmType, uint8_t isEnabled)
{
if( ! (dtIsAlarm(alarmType) && now() < SECS_PER_YEAR)) // only create alarm ids if the time is at least Jan 1 1971
{
for(uint8_t id = 0; id < dtNBR_ALARMS; id++)
{
if( Alarm[id].Mode.alarmType == dtNotAllocated )
{
// here if there is an Alarm id that is not allocated
Alarm[id].onTickHandler = onTickHandler;
Alarm[id].Mode.isOneShot = isOneShot;
Alarm[id].Mode.alarmType = alarmType;
Alarm[id].value = value;
isEnabled ? enable(id) : disable(id);
return id; // alarm created ok
}
}
}
return dtINVALID_ALARM_ID; // no IDs available or time is invalid
}
// returns true only if id is allocated and the type is a time based alarm, returns false if not allocated or if its a timer
bool TimeAlarmsClass::isAlarm(AlarmID_t ID)
{
return( isAllocated(ID) && dtIsAlarm(Alarm[ID].Mode.alarmType) );
}
return create( value, onTickHandler, IS_ONESHOT, dtTimer );
