I'm trying to run the l2cap_file_client.py and l2cap_file_server.py examples from https://github.com/micropython/micropython-lib/tree/master/micropython/bluetooth/aioble on my Pico-W. I'm currently running MicroPython v1.22.0-preview.236.ge1a7aa23f on 2023-12-09; Raspberry Pi Pico W with RP2040
It sounds like the BLE support for the Pico-W is missing l2cap functionality, I get stack traces like:
...
Connecting to Device(ADDR_PUBLIC, d8:3a:dd:94:88:0e)
Discovering...
Connecting channel
Task exception wasn't retrieved
future: <Task> coro= <generator object 'getPrefsFromServer' at 20012c60>
Traceback (most recent call last):
File "asyncio/core.py", line 1, in run_until_complete
File "l2cap_file_client.py", line 152, in getPrefsFromServer
File "l2cap_file_client.py", line 62, in connect
File "aioble/device.py", line 288, in l2cap_connect
File "aioble/l2cap.py", line 205, in connect
AttributeError: 'BLE' object has no attribute 'l2cap_connect'
What can I do to get this working? More documentation about what is/isn't supported on a given platform would be really helpful as I just blew an afternoon getting to this point. Seems to be a bit of a theme, see https://github.com/micropython/micropython-lib/issues/444 and https://github.com/micropython/micropython-lib/issues/686
Howdy Legends,
Getting some weird errors when doing the most basic writes...
I am connecting just fine to an ESP32-S3 running Firmware: 3.4.0; MicroPython v1.24.1 on 2024-11-29., and aioble is the latest.
With capture=True on the characteristic, when I attempt a write from LightBlue I get:
Unhandled exception in IRQ callback handler
Traceback (most recent call last):
File "/lib/aioble/core.py", line 71, in ble_irq
File "/lib/aioble/server.py", line 48, in _server_irq
File "/lib/aioble/server.py", line 184, in _remote_write
AttributeError: type object 'BaseCharacteristic' has no attribute '_capture_queue'
...and then with capture=False just not getting anything.
Anything obvious I am missing?
Best,
Luke
Here is another clue, again just following the example way to receive a written event. On startup I'm getting:
Registering service...
assert lld.c 422, param 00000000 00000000
Service registered.
Anyone ever seen this assertion? I'm running a plain Espressif ESP32-S3-DevKitC-1 and latest MicroPython release, following the basic aioble examples. All pretty out of the box stuff, but getting errors :(
May I suggest you change this into a discussion, and only raise an issue here when you are sure there is a bug ?
I think you will get more responses there.
Yes unfortunately l2cap support hasn't been added on btstack BLE integration yet which rp2 uses.
https://docs.micropython.org/en/latest/library/bluetooth.html#l2cap-connection-oriented-channels
Okay, thank you!