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yeelight.py
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yeelight.py
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import binascii
import struct
from bluepy.btle import BTLEException, DefaultDelegate, Peripheral
class Yeelight(DefaultDelegate):
WRITE_CHAR_UUID = b"aa7d3f34" # -2d4f-41e0-807f-52fbf8cf7443"
COMMAND_STX = "43"
COMMAND_ETX = "00"
AUTH_CMD = "67"
AUTH_ON = "02"
POWER_CMD = "40"
POWER_ON = "01"
POWER_OFF = "02"
COLOR_CMD = "41"
RGB_MODE = "65"
BRIGHT_CMD = "42"
COLORTEMP_CMD = "43"
TEMP_MODE = "65"
STATUS_CMD = "44"
COLORFLOW_CMD = "4a"
SLEEP_CMD = "7f03"
def __init__(self, address):
DefaultDelegate.__init__(self)
self.__address = address
self.__connect()
# Override
def handleNotification(self, handle, data):
if handle == 21:
format = (
'!xx' # 4345 header
'B' # switch: 01=on 02=off
'B' # mode: 01=rgb 02=warm
'BBBx' # RGB
'B' # Brightness
'H' # temp 2byte 1700 ~ 6500
'xxxxxxx'
)
(switch, mode, r, g, b,
brightness, temp) = struct.unpack(format, data)
if switch != 4:
self._switch = switch
self._mode = mode
self._rgb = '{:02x}{:02x}{:02x}'.format(r, g, b)
self._temp = temp
self._brightness = brightness
def disconnect(self, *args, **kwargs):
return self.__peripheral.disconnect(*args, **kwargs)
def __connect(self):
self.__peripheral = Peripheral(self.__address)
self.__peripheral.setDelegate(self)
characteristics = self.__peripheral.getCharacteristics()
self.__ch = next(iter(filter(lambda x: binascii.b2a_hex(x.uuid.binVal)
.startswith(self.WRITE_CHAR_UUID),
characteristics)))
# Register notification
self.__peripheral.writeCharacteristic(
0x16,
binascii.a2b_hex('0100'))
# Auth
self.__write_cmd(
self.COMMAND_STX +
self.AUTH_CMD +
self.AUTH_ON +
self.COMMAND_ETX * 15)
# Get status
self.__request_status()
def __write_cmd(self, value):
for _ in range(3):
try:
self.__ch.write(binascii.a2b_hex(value))
except BTLEException as e:
error = e
self.__connect()
else:
self.__ch.write(binascii.a2b_hex(
self.COMMAND_STX +
self.STATUS_CMD +
self.COMMAND_ETX * 16
))
self.__peripheral.waitForNotifications(1.0)
break
else:
raise error
def __request_status(self):
self.__write_cmd(
self.COMMAND_STX +
self.STATUS_CMD +
self.COMMAND_ETX * 16
)
@property
def switch(self):
self.update_status()
return self._switch
@property
def brightness(self):
self.update_status()
return self._brightness
@property
def temp(self):
self.update_status()
return self._temp
@property
def rgb(self):
self.update_status()
return self._rgb
@property
def mode(self):
self.update_status()
return self._mode
def poweron(self):
self.__write_cmd(
self.COMMAND_STX +
self.POWER_CMD +
self.POWER_ON +
self.COMMAND_ETX * 15)
def poweroff(self):
self.__write_cmd(
self.COMMAND_STX +
self.POWER_CMD +
self.POWER_OFF +
self.COMMAND_ETX * 15)
def set_rgb(self, rgb):
self.__write_cmd(
self.COMMAND_STX +
self.COLOR_CMD +
rgb + '00' +
self.RGB_MODE +
self.COMMAND_ETX * 11)
def set_brightness(self, value):
self.__write_cmd(
self.COMMAND_STX +
self.BRIGHT_CMD +
('%02x' % value) +
self.COMMAND_ETX * 15)
def set_temp(self, value):
if not 1700 <= value <= 6500 and 0.0 <= value <= 1.0:
value = int(1700 + value * 4800)
self.__write_cmd(
self.COMMAND_STX +
self.COLORTEMP_CMD +
('%04x' % value) +
self.TEMP_MODE +
self.COMMAND_ETX * 13)
def set_sleep(self, minute):
self.__write_cmd(
self.COMMAND_STX +
self.SLEEP_CMD +
('%02x' % minute) +
self.COMMAND_ETX * 14
)
def update_status(self, timeout=0.1):
self.__peripheral.waitForNotifications(timeout)