def alarm_check():
"""Check for alarm condition"""
global temp_alarm_lim,temperature,temp_alarm,unit
if((unit==1 and temperature>(int(sensorRead.todegF(temp_alarm_lim))))
or (unit==0 and temperature>int(temp_alarm_lim))):
set_alarm()
elif((unit==1 and temperature<(int(sensorRead.todegF(temp_alarm_lim-1))))
or (unit==0 and temperature<int(temp_alarm_lim)-1)):
reset_alarm()
def update_data():
""" function to update temp, humidity and Alarm data on display """
global update_interval, temperature, unit
threading.Timer(
update_interval,
update_data).start() # to autorun function once every update interval
humidity, temperature = sensorRead.get_TempHum()
time = datetime.now().strftime('%b-%d-%Y %H:%M:%S')
ui.label_updateTime.setText(time)
if (unit == 1 and temperature !=
None): # if unit is set to degF convert temperature to degF
temperature = sensorRead.todegF(temperature)
if (temperature == None): # handling data not being sent
ui.lcd_temperature.display("Err")
else:
ui.lcd_temperature.display(temperature)
if (humidity == None): # handling data not being sent
ui.lcd_humidity.display("Err")
else:
ui.lcd_humidity.display(humidity)
alarm_check()
update_last_temp()
update_avg_temp()
update_max_temp()
update_min_temp()
update_last_hum()
update_avg_hum()
update_max_hum()
update_min_hum()
def ws_last_temp(unit):
"""function to provide last value of temp from database
in the format that the jquery script needs"""
ts,val = calcLastVal("temperature")
if(unit==1):
val=sensorRead.todegF(val)
return('last_temp'+','+ts.strftime('%b-%d-%Y %H:%M:%S')+','+str(round(val,2)))
def ws_min_temp(unit):
"""function to provide minimum temp data in the format that the jquery script needs"""
ts, val = calcDayMinimum("temperature")
if (unit == 1):
val = sensorRead.todegF(val)
return ('min_temp' + ',' + ts.strftime('%b-%d-%Y %H:%M:%S') + ',' +
str(round(val, 2)))
def update_min_temp():
global unit
ts, val = dbops.calcDayMinimum("temperature")
ui.temp_unit_4.setText('degC')
if (unit == 1):
val = sensorRead.todegF(val)
ui.temp_unit_4.setText('degF')
ui.min_temp.setText(str(round(val, 2)))
ui.min_temp_ts.setText(ts.strftime('%b-%d-%Y %H:%M:%S'))
def update_last_temp():
global unit
ts, val = dbops.calcLastVal("temperature")
ui.temp_unit_1.setText('degC')
if (unit == 1):
val = sensorRead.todegF(val)
ui.temp_unit_1.setText('degF')
ui.last_temp.setText(str(round(val, 2)))
ui.last_temp_ts.setText(ts.strftime('%b-%d-%Y %H:%M:%S'))
def getData(unit):
""" function to get latest data from sensors ,
accounts for unit change from the webpage and
converts temperature values accordingly"""
h,t= sensorRead.get_TempHum()
if(t==None):
t=-1
if(h==None):
h=-1
if(unit==1):
t=sensorRead.todegF(t)
return (str(round(t,2))+','+str(round(h,2)))
