def display_room_climate_data(LCD, temp, hum):
LCD.printString('Temp: ' + str(round(temp,1)) + ' øC',4)
LCD.printString('Hum: ' + str(round(hum,1)) + ' %',5)
def main():
# create objects
myLCD = LCD(CS1=17, CS2=7, E=15, RS=14, D0=27, D1=23, D2=24, D3=25, D4=8, D5=11, D6=9, D7=22, PWM=1) #PWM pin number is wiringPi numbering!
myAM2302 = AM2302(pin=4)
myCalendar = GoogleCalendar()
# set the initial backlight flag
if isNight():
backlightNightFlag = 1
myLCD.setBacklightPWM(BACKLIGHT_NIGHT_VALUE)
else:
backlightNightFlag = 0
myLCD.setBacklightPWM(BACKLIGHT_DAY_VALUE)
last_update = datetime.datetime.now() - datetime.timedelta(seconds=UPDATE_FREQUENCY_BUS)
while(True):
# dim backlight if its night
if isNight():
if backlightNightFlag == 0:
backlightNightFlag = 1
myLCD.setBacklightPWM(BACKLIGHT_NIGHT_VALUE)
elif backlightNightFlag == 1:
backlightNightFlag = 0
myLCD.setBacklightPWM(BACKLIGHT_DAY_VALUE)
# update bus/temp only every n secs
if (datetime.datetime.now() - last_update).seconds >= UPDATE_FREQUENCY_BUS:
# get bus
next_bus_dict = get_next_bus()
# update calendar data
events = myCalendar.get_events()
if len(events) > 1: # only display next 2 events
running_string = events[0] + ' - ' + events[1]
elif len(events) == 0:
running_string = 'No events scheduled'
else: # only 1 event
running_string = events[0]
running_string_2 = running_string + ' - ' + running_string # double string to make it easier for running it over the screen
running_index = 0
display_next_buses(myLCD, next_bus_dict)
temp, hum = myAM2302.get_data()
display_room_climate_data(myLCD, temp, hum)
log_room_climate_data('/home/pi/Infoscreen/room_climate.log', temp, hum)
last_update = datetime.datetime.now()
# print the running text for the calendar
currently_displayed_string = running_string_2[running_index:running_index+16]
myLCD.printString(currently_displayed_string,7)
if running_index == len(running_string) + 2: #2=3-1, 3= number of characters in separator (' - ')
running_index = 0
else:
running_index += 1
sleep(0.3)
def display_next_buses(LCD, bus_dict):
for i in range(len(bus_dict['busNr'])):
line_to_display = bus_dict['busNr'][i] + ': ' + bus_dict['timeToNextBus'][i] + ' min (' + bus_dict['delay'][i] + ')'
LCD.printString(line_to_display, i)
