[7.0.0.beta0] Unknown system firmware error: 3205

[blalor]

I'm attempting to use the AppleMediaService advertisement, per the example here. I've run into the same problem as @Kimpehzor in adafruit/Adafruit_CircuitPython_BLE#130, so per @tannewt's direction I'm trying the "Absolute Newest" CircuitPython build and bundle:

• adafruit-circuitpython-feather_nrf52840_express-en_US-20210901-2c45f94.uf2
• adafruit-circuitpython-bundle-py-20210901.zip

When start_advertising() is called, I get an exception:

Traceback (most recent call last):
  File "code.py", line 10, in <module>
  File "/lib/adafruit_ble/__init__.py", line 195, in start_advertising
_bleio.BluetoothError: Unknown system firmware error: 3205

I don't get this exception with the latest 6.3.0 build and bundle, but I do still get the issue in adafruit/Adafruit_CircuitPython_BLE#130.

Adafruit CircuitPython 7.0.0-beta.0-171-g2c45f948a on 2021-09-01; Adafruit Feather nRF52840 Express with nRF52840

INFO_UF2.TXT

UF2 Bootloader 0.2.6 lib/nrfx (v1.1.0-1-g096e770) lib/tinyusb (legacy-525-ga1c59649) s140 6.1.1
Model: Adafruit Feather nRF52840 Express
Board-ID: NRF52-Bluefruit-v0
Bootloader: s140 6.1.1
Date: Dec 21 2018

code

import adafruit_ble
from adafruit_ble.advertising.standard import SolicitServicesAdvertisement
from adafruit_ble_apple_media import AppleMediaService

radio = adafruit_ble.BLERadio()
radio.name = "ohai"

advertisement = SolicitServicesAdvertisement()
advertisement.solicited_services.append(AppleMediaService)
radio.start_advertising(advertisement)

[blalor]

Hm, this appears related to #3731

[tannewt]

Interesting! Error 0x3205 is BLE_ERROR_GAP_DEVICE_IDENTITIES_DUPLICATE. Does this still happen if you press reset when the LED is fast blinking blue? That'll clear your bonding information. I suspect a core problem so I'm going to move this issue to the core. It'll be easier to track then.

[blalor]

Ah, I was wondering how pairing information persists without being explicitly stored! That's really good to know.

Clearing the bonding information worked!

[tannewt]

Great! I'll close this. I think the new bonding code will invalidate any existing identities when a new copy is written. So, it shouldn't happen going forwards.