Connect to a Huawei smart watch in Huawei HR Data Broadcast mode and display the heartrate

Huawei_HPR.py

import asyncio
from bleak import BleakScanner, BleakClient

huawei_device = None
huawei_heartrate_char_uuid = "00002a37-0000-1000-8000-00805f9b34fb"

async def notification_handler(sender, data):
    heart_rate = data[1]
    print(f"Heart Rate:{heart_rate} BPM", end="\r")

async def connect():
    print("Scanning for a Huawei device in HR Data Broadcast mode")
    devices = await BleakScanner.discover()
    
    global huawei_device
    
    for device in devices:
        if "HUAWEI" in (device.name or ""):
            huawei_device = device.address
            
        if huawei_device:
            print(f"Found Huawei device address: {huawei_device}")
            async with BleakClient(device) as client:
                await client.start_notify(huawei_heartrate_char_uuid, notification_handler)
                while True:
                    await asyncio.sleep(1)
        else:
            print("No Huawei device in HR Data Broadcast mode found")
            return
        
devices = asyncio.run(connect())