Pyportal Titano BLE advertisement length error

[UnfinishedStuff]

Hi everyone,

This issue was originally posted on the Adafruit Forums: https://forums.adafruit.com/viewtopic.php?p=970491#p970491

I've been trying to use BLE with CircuitPython, and I've hit a snag with the PyPortal Titano. I have:

• Updated CircuitPython to version 8.0.5
• Upgraded the libraries on the device to those from the 8.x bundle
• Updated the Airlift firmware to NINA_W102-1.7.4 using Adafruit's guide

# SPDX-FileCopyrightText: 2020 Dan Halbert, written for Adafruit Industries
#
# SPDX-License-Identifier: Unlicense

# pylint: disable=unused-import
import board
import busio
from digitalio import DigitalInOut
from adafruit_ble import BLERadio
from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
from adafruit_ble.services.nordic import UARTService
from adafruit_esp32spi import adafruit_esp32spi
from adafruit_airlift.esp32 import ESP32

# If you are using a Metro M4 Airlift Lite, PyPortal,
# or MatrixPortal, you can use the default pin settings.
# Leave this DEFAULT line uncommented.
# If you are using a board with pre-defined ESP32 Pins:
esp32 = ESP32()

# If you are using a Metro M7 **OR**
# if you are using CircuitPython 6.0.0 or earlier,
# on PyPortal and PyPortal Titano only, use the pin settings
# below. Comment out the DEFAULT line above and uncomment
# the line below. For CircuitPython 6.1.0, the pin names
# have changed for these boards, and the DEFAULT line
# above is correct.
# esp32 = ESP32(tx=board.TX, rx=board.RX)

# If you are using an AirLift FeatherWing or AirLift Bitsy Add-On,
# use the pin settings below. Comment out the DEFAULT line above
# and uncomment the lines below.
# If you are using an AirLift Breakout, check that these
# choices match the wiring to your microcontroller board,
# or change them as appropriate.
# esp32 = ESP32(
#     reset=board.D12,
#     gpio0=board.D10,
#     busy=board.D11,
#     chip_select=board.D13,
#     tx=board.TX,
#     rx=board.RX,
# )

# If you are using an AirLift Shield,
# use the pin settings below. Comment out the DEFAULT line above
# and uncomment the lines below.
# esp32 = ESP32(
#     reset=board.D5,
#     gpio0=board.D6,
#     busy=board.D7,
#     chip_select=board.D10,
#     tx=board.TX,
#     rx=board.RX,
# )

adapter = esp32.start_bluetooth()

ble = BLERadio(adapter)
uart = UARTService()
advertisement = ProvideServicesAdvertisement(uart)

while True:
    ble.start_advertising(advertisement)
    print("waiting to connect")
    while not ble.connected:
        pass
    print("connected: trying to read input")
    while ble.connected:
        # Returns b'' if nothing was read.
        one_byte = uart.read(1)
        if one_byte:
            print(one_byte)
            uart.write(one_byte)

When I try to use this code

From this Adafruit Guide

I get this error from Mu:

0;🐍main.py | 8.0.5\]0;🐍main.py | 8.0.5\Traceback (most recent call last):
  File "main.py", line 64, in <module>
  File "adafruit_ble/__init__.py", line 215, in start_advertising
ValueError: Data too large for advertisement packet
]0;🐍215@adafruit_ble/__init__.py ValueError | 8.0.5\
Code done running.

I've also done all of this using a Feather M4 Express with the standalone Airlift breakout (ADA4201) and it works just fine, so this seems to be something specific to the Titano or built-in airlifts. The code also works fine when run on a Feather nRF52840 and a Seeed Xiao nRF52840.

Mikeysklar on the forum asked me to print advertisement after the code runs:

uart = UARTService()
advertisement = ProvideServicesAdvertisement(uart)

On the Titano this gives:
<ProvideServicesAdvertisement flags=<AdvertisingFlags general_discovery le_only > services=<BoundServiceList: UUID('6e400001-b5a3-f393-e0a9-e50e24dcca9e')> >

On the Feather M4 Express with Airlift breakout this gives:
<ProvideServicesAdvertisement services=<BoundServiceList: UUID('6e400001-b5a3-f393-e0a9-e50e24dcca9e')> flags=<AdvertisingFlags general_discovery le_only > >

The BLE code is a little beyond me, so I can't quite see what's going wrong here. Any help would be very much appreciated.

[dhalbert]

[EDIT - Sorry, I didn't realize how old this was. Did you get it to work?]

Could you please update CircuitPython to 8.2.7 and re-test, and could you also confirm that the firmware is at 1.7.4? You can confirm the firmware version using this Internet Connect test program: https://learn.adafruit.com/adafruit-pyportal/internet-connect

[UnfinishedStuff]

Thanks for the suggestions @dhalbert. No, I didn't get it sorted so I abandoned the project, but I would love to get it working.

I've updated CircuitPython as well as all libraries and I still get the same error:

Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.
main.py output:
]0;🐍main.py | 8.2.7\Traceback (most recent call last):
  File "main.py", line 64, in <module>
  File "adafruit_ble/__init__.py", line 216, in start_advertising
ValueError: Data too large for advertisement packet
]0;🐍216@adafruit_ble/__init__.py ValueError | 8.2.7\
Code done running.

could you also confirm that the firmware is at 1.7.4?

Yes, the output states Firmware vers. bytearray(b'1.7.4\x00'), so that seems fine.

The advertisement continues to look as it did before:

<ProvideServicesAdvertisement flags=<AdvertisingFlags general_discovery le_only > services=<BoundServiceList: 
UUID('6e400001-b5a3-f393-e0a9-e50e24dcca9e')>

Any further suggestions would be much appreciated!