nthsthing/ESPBLE.py

import asyncio
from bleak import BleakScanner
from bleak import BleakClient

target_name = "Long name works now"

SERVICE_UUID=        "d86aecf2-d87d-489f-b664-b02de82b2fc0"
CHARACTERISTIC_UUID= "d86aecf2-d87d-489f-b664-b02de82b2fc0"

async def connect():
    target_address = None
    devices = await BleakScanner.discover()
    for d in devices:
        print(d)
        if target_name == d.name:
            target_address = d.address
            print("found target {} bluetooth device with address {} ".format(target_name,target_address))
            break
        else:
            print("could not find device")
    return target_address

async def main():
    target_address = await connect()

    if target_address is not None:
        async with BleakClient(target_address) as client:
            print(f"Connected: {client.is_connected}")

            while 1:
                #text = input()
                #if text == "quit":
                #    break

                #await client.write_gatt_char(CHARACTERISTIC_UUID, bytes(text, 'UTF-8'), response=True)

                try:
                    data = await client.read_gatt_char(CHARACTERISTIC_UUID)
                    datastr = data.decode('utf-8') #convert byte to str
                    print("data: {}".format(datastr))

                except Exception:
                    print("failed to get data, restarting connection.")




asyncio.run(main())