Switchbot Plug Mini / Python / Bluetooth (BLE) / sample

switchbot_plug_mini.py

import asyncio
import bleak
import bleak.backends.scanner
import argparse

debug = True
prev_seq = None


async def cb(_, adv: bleak.backends.scanner.AdvertisementData):
    global prev_seq
    manufacturer_data = adv.manufacturer_data
    # 0x0969=Woan Technology (Shenzhen) Co., Ltd. == SwitchBot
    # https://btprodspecificationrefs.blob.core.windows.net/assigned-numbers/Assigned%20Number%20Types/Assigned%20Numbers.pdf
    if 0x0969 not in manufacturer_data:
        return

    # https://github.com/OpenWonderLabs/SwitchBotAPI-BLE/blob/latest/devicetypes/plugmini.md#plug-mini-broadcast-message
    data = manufacturer_data[0x0969]
    if prev_seq == data[6]:
        return
    prev_seq = data[6]
    if debug:
        print(f"RSSI:\t{adv.rssi}")
        print("MAC:\t{:02x}:{:02x}:{:02x}:{:02x}:{:02x}:{:02x}".format(*data[0:6]))
        print(f"SEQ:\t{int(data[6])}")
    print(f"State:\t{data[7] == 0x80}")
    bits = data[8]
    print(f"Delay:\t{bool((bits & 0b001))}")
    print(f"Timer:\t{bool((bits & 0b010))}")
    print(f"Sync:\t{bool((bits & 0b100))}")
    print(f"WiFi:\t{data[9]}")
    print(f"Over:\t{bool((data[10] & 0b1000_000) >> 7)}")
    print(f"Power:\t{(((data[10] << 8) | data[11]) & 0b01111111_11111111) / 10} W")


async def scan(timeout):
    async with bleak.BleakScanner(timeout=timeout, detection_callback=cb) as _:
        await asyncio.sleep(timeout)


def main():
    p = argparse.ArgumentParser()
    p.add_argument("--timeout", "-t", type=int, default=5)
    a = p.parse_args()

    loop = asyncio.new_event_loop()
    loop.run_until_complete(scan(a.timeout))


if __name__ == "__main__":
    main()