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#!/usr/bin/env python
#Importiere Librarys
from smbus import SMBus
from time import sleep
import os
import subprocess
#Variablen:
bus = SMBus(1)
light_switch_value = 75
socket_on = False

def init():
    #Search for active sensor
    sensor_status = bus.read_byte_data(0x29,0x80)
    if sensor_status != 3:
        #Set sensor to normal operation mode
        bus.write_byte_data(0x29,0x80,0x3)
    	#Set sensor to Time = 400 ms
    	bus.write_byte_data(0x29,0x81,0x01)

def read_sensor_data():
    global datalow, datahigh
    datalow = bus.read_byte_data(0x29,0x84)
    datahigh = bus.read_byte_data(0x29,0x85)

def calc_lux():
    global lux
    lux = 2*((datahigh<<8)+datalow)

def switch_light():
	global lux, socket_on
	if lux > light_switch_value and socket_on == False:
		print "Messwert: ", lux
		print "Messwert uber ", light_switch_value, " - schalte Licht AUS"
		subprocess.call(["sudo", "/home/user/raspberry-remote/send", "11111", "3", "0"], stdout=open(os.devnull, 'wb'))
		socket_on = True
	if lux < light_switch_value and socket_on == True:
		print "Messwert: ", lux
		print "Messwert unter ",light_switch_value, " - schalte Licht EIN"
                subprocess.call(["sudo", "/home/user/raspberry-remote/send", "11111", "3", "1"], stdout=open(os.devnull, 'wb'))
		socket_on = False

def main():
    init()
    while True:
	   read_sensor_data()
	   calc_lux()
	   switch_light()
	   print lux
	   sleep(0.2)

if __name__ == '__main__':
    main()

Code: Alles auswählen

def read_sensor_data():
    datalist = []
    datalist.append(bus.read_byte_data(0x29,0x84))
    datalist.append(bus.read_byte_data(0x29,0x85))
    return  datalist

def calc_lux():
    list = read_sensor_data()
    lux = 2*((list[1]<<8)+list[0])

Code: Alles auswählen

#!/usr/bin/env python
import os
import subprocess
from time import sleep
from smbus import SMBus


def init(bus):
    # 
    # Search for active sensor.
    # 
    sensor_status = bus.read_byte_data(0x29, 0x80)
    if sensor_status != 3:
        # 
        # Set sensor to normal operation mode.
        # 
        bus.write_byte_data(0x29, 0x80, 0x03)
        # 
        # Set sensor to Time = 400 ms.
        # 
        bus.write_byte_data(0x29, 0x81, 0x01)


def read_sensor_data(bus):
    low_byte = bus.read_byte_data(0x29, 0x84)
    high_byte = bus.read_byte_data(0x29, 0x85)
    return (high_byte << 8) | low_byte


def switch_light(lux, threshold, socket_on):
    if lux > threshold and not socket_on:
        change = True
    elif lux < threshold and socket_on:
        change = False
    else:
        change = None

    if change is not None:
        print 'Messwert: ', lux
        relation_text, on_off_text = (
            ('uber', 'AUS') if change else ('unter', 'EIN')
        )
        print 'Messwert {0} {1} - schalte Licht {2}'.format(
            relation_text, threshold, on_off_text
        )
        with open(os.devnull, 'wb') as null_file:
            subprocess.call(
                [
                    'sudo',
                    '/home/user/raspberry-remote/send',
                    '11111',
                    '3',
                    str(int(not change))
                ],
                stdout=null_file
            )

    return socket_on if change is None else change


def main():
    threshold = 75
    socket_on = False
    bus = SMBus(1)
    init(bus)
    while True:
        lux = read_sensor_data(bus) * 2
        socket_on = switch_light(lux, threshold, socket_on)
        print lux
        sleep(0.2)


if __name__ == '__main__':
    main()