light sensor class and test added

light_sensor.py

@@ -0,0 +1,12 @@
+import smbus
+
+class light_sensor:
+	def __init__(self, bus = 1, addr = 0x23):
+		self.bus = bus
+		self.addr = addr
+		self.bus = smbus.SMBus(self.bus)
+
+	def read(self):
+		data = self.bus.read_i2c_block_data(self.addr, 0x10)
+		lx = int(round((data[0] * 256 + data[1]) / 1.2, 0))
+		return lx

light_sensor_test.py

@@ -0,0 +1,10 @@
+#!/usr/bin/python2
+
+from light_sensor import light_sensor
+from time import sleep
+
+ls = light_sensor(1, 0x23)
+
+while True:
+	print "light: " + str(ls.read()) + " lx."
+	sleep(1)