Use bleak without with...as syntax

[0xARROWK]

Hey there !

I currently have a class to handle BLE actions (with functions like send_data, set_x, set_y...). I call one function every 100ms but the usage of with...as syntax (see below) is not adapted to my class syntax. Is it possible to write it on another way ?

def __init__(self, address, uuid, characteristic):
        self.uuid = uuid
        self.address = address
        self.characteristic = characteristic
        self.device = None

    async def connect(self):
        print("waiting for connection...")
        async with BleakClient(self.address) as client:
            print(f"Connected : {client.is_connected}")
            self.device = client
            await self.set_color(self.currentColor)

    async def set_color(self, c):
        self.currentColor = c
        await self.device.write_gatt_char(self.characteristic, bytearray(color(c))

If I create a class instance and then call set_color, I get a "Not connected" error, which I assume is caused beacause we exited the with...as statement. Sorry if it's a newbie question, I never learned python and just use it for scripting x)

Thanks in advance :)

[dlech]

https://bleak.readthedocs.io/en/latest/api/client.html#connecting-and-disconnecting

[0xARROWK]

Yes, just found that in the doc, it completely does the job, thank you !

import asyncio
from bleak import BleakClient

address = "24:71:89:cc:09:05"
MODEL_NBR_UUID = "00002a24-0000-1000-8000-00805f9b34fb"

async def main(address):
    client = BleakClient(address)
    try:
        await client.connect()
        model_number = await client.read_gatt_char(MODEL_NBR_UUID)
        print("Model Number: {0}".format("".join(map(chr, model_number))))
    except Exception as e:
        print(e)
    finally:
        await client.disconnect()

asyncio.run(main(address))