added examples

examples/simple.py

@@ -0,0 +1,49 @@
+import board
+import busio
+import adafruit_tsl2561
+
+# Create the I2C bus
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# Create the TSL2561 instance, passing in the I2C bus
+tsl = adafruit_tsl2561.TSL2561(i2c)
+
+# Print chip info
+print("Chip ID = {}".format(tsl.chip_id))
+print("Enabled = {}".format(tsl.enabled))
+print("Gain = {}".format(tsl.gain))
+print("Integration time = {}".format(tsl.integration_time))
+
+print("Configuring TSL2561...")
+
+# Enable the light sensor
+tsl.enabled = True
+
+# Set gain 0=1x, 1=16x
+tsl.gain = 0
+
+# Set integration time (0=13.7ms, 1=101ms, 2=402ms, or 3=manual)
+tsl.integration_time = 1
+
+print("Getting readings...")
+
+# Get raw (luminosity) readings individually
+broadband = tsl.broadband
+infrared = tsl.infrared
+
+# Get raw (luminosity) readings using tuple unpacking
+#broadband, infrared = tsl.luminosity
+
+# Get computed lux value
+lux = tsl.lux
+
+# Print results
+print("Enabled = {}".format(tsl.enabled))
+print("Gain = {}".format(tsl.gain))
+print("Integration time = {}".format(tsl.integration_time))
+print("Broadband = {}".format(broadband))
+print("Infrared = {}".format(infrared))
+print("Lux = {}".format(lux))
+
+# Disble the light sensor (to save power)
+tsl.enabled = False