def control_thermostat():
now = datetime.now()
therm = Thermostat.objects.all()[0]
client = ThermostatClient(therm.ip_address)
cur_state = client.get("/tstat")
cur_temp = cur_state.get('temp', None)
cur_operating_mode = cur_state.get('tmode', 0)
cur_hvac_state = cur_state.get('tstate', 0)
is_override = False if cur_state.get('override', 0) == 0 else True
is_hold = False if cur_state.get('hold', 0) == 0 else True
heat_setpoint = cur_state.get('t_heat', None)
cool_setpoint = cur_state.get('t_cool', None)
if cur_state.get('error', None) or not cur_temp or cur_temp == -1:
print cur_state
return
cur_running_setpoint = heat_setpoint if cur_operating_mode == 1 else cool_setpoint
# Save data as signals
tempsensor = ThermostatTemperatureSensor.objects.filter(thermostat=therm)[0]
indoor_temp_signal = _get_signal(sensor=tempsensor, value_type='real')
heat_on_signal = _get_signal(name='Heat On', value_type='bool')
cool_on_signal = _get_signal(name='Cool On', value_type='bool')
setpoint_signal = _get_signal(name='Temperature Setpoint', value_type='real')
_save_datapoint(indoor_temp_signal, cur_temp)
_save_datapoint(heat_on_signal, cur_hvac_state == 1)
_save_datapoint(cool_on_signal, cur_hvac_state == 2)
# Look up latest weekly recurring setpoint to use
recurring_setpoints = RecurringWeeklySetpoint.objects.all()
sorted_recurring = sorted(recurring_setpoints, key=attrgetter('day_of_week', 'hour', 'minute'))
recurring_setpoint = None
for s in sorted_recurring:
date_this_week = _get_date_this_week(s, now=now)
if date_this_week < now:
recurring_setpoint = s
# See if we have any scheduled hold setpoints
# Doesn't make sense to have overlapping hold setpoints, so pick the first one we find
hold_setpoints = ScheduledHoldSetpoint.objects.filter(start__lte=now, end__gte=now)
hold_setpoint = hold_setpoints[0] if hold_setpoints else None
# Figure out which setpoint to use
# Scheduled hold setpoints trump recurring weekly setpoints,
# and manual override (from thermostat panel or web interface) trump all
if recurring_setpoint:
last_recurring_setpoint = therm.last_recurring_setpoint
if not last_recurring_setpoint:
switch_periods = True
else:
if _get_date_this_week(recurring_setpoint, now=now) > _get_date_this_week(last_recurring_setpoint, now=now):
switch_periods = True
else:
switch_periods = False
if hold_setpoint:
last_hold_setpoint = therm.last_scheduled_setpoint
if last_hold_setpoint != hold_setpoint:
switch_periods = True
therm.last_recurring_setpoint = recurring_setpoint
therm.last_scheduled_setpoint = hold_setpoint
therm.save()
temp_to_set = None
if recurring_setpoint:
temp_to_set = recurring_setpoint.setpoint
new_mode = recurring_setpoint.mode
if hold_setpoint:
temp_to_set = hold_setpoint.setpoint
new_mode = hold_setpoint.mode
if is_override and not switch_periods:
temp_to_set = None
if temp_to_set and temp_to_set != cur_running_setpoint:
if new_mode == 'auto':
new_mode = therm.mode
if new_mode == 'heat':
params = {'a_heat': temp_to_set, 'hold': 1, 'a_mode': 1}
elif new_mode == 'cool':
params = {'a_cool': temp_to_set, 'hold': 1, 'a_mode': 1}
if new_mode != therm.mode:
params.update({'tmode': 1 if new_mode == 'heat' else 2})
client.send("/tstat", params)
# TODO: Handle auto mode
_save_datapoint(setpoint_signal, temp_to_set)
else:
if cur_running_setpoint:
_save_datapoint(setpoint_signal, cur_running_setpoint)
