# Get light object
light = Bridge('192.168.0.190')["Jessi's Lamp"]
isOn = light.on
if len(sys.argv) < 2:
# Display brightness
currentBrightness = light.brightness
print('Current brightness is %.1f%% (%d/255).' %
(float(currentBrightness) / 255. * 100., currentBrightness))
# Display instructions for use and exit
print(
'To set brightness, pass desired %. Example: "python setBedsideBrightness.py 15.5"'
)
sys.exit()
# Retrieve desired percentage, map to 8-bit
brightnessPercent = float(sys.argv[1])
brightnessSetting = int(round(brightnessPercent * 255 / 100.0))
print('Brightness set: %.1f%% (%d/255).' %
(brightnessPercent, brightnessSetting))
# Readjust light brightness
if not isOn:
light.on = True
light.brightness = brightnessSetting
# Light set to 0: turn off light
if brightnessSetting == 0:
light.on = False
nextDivisionTime = startTime + divisionTime
print('First update: %s' %
str(datetime.datetime.fromtimestamp(nextDivisionTime)))
# TODO: remove after testing
firstFraction = (nextDivisionTime - endTime) / (startTime - endTime)
firstBrightness = int(
(nextDivisionTime - endTime) / (startTime - endTime) * brightnessStart)
print('firstFraction: %.2f\tfirstBrightness: %d' %
(firstFraction, firstBrightness))
while time.time() < endTime:
# Check if update timer has passed
if time.time() > nextDivisionTime:
# Readjust light brightness
brightnessInterpolated = (time.time() - endTime) / (
startTime - endTime) * brightnessStart
light.brightness = int(brightnessInterpolated)
# Update division time
nextDivisionTime += divisionTime
nextDivisionTimeString = str(
datetime.datetime.fromtimestamp(nextDivisionTime))
print('nextDivisionTime passed. New brightness: %3d. Next update: %s' %
(light.brightness, nextDivisionTimeString))
# Sleep to reduce compute load
time.sleep(2)
# Countdown has ended: turn off light
light.on = False
