BLE recycled callback not called

[szymonwid]

Describe the bug

Hi, in my project I am using BLE as a peripheral role. It has custom service with few characteristics with notify property. When I connect to the central, enable notifications on any characteristic and then disconnect, recycled callback is never called and advertising is not started again. It is happening if BLE task has ~<15ms period and bt_gatt_notify() function is called inside. Increasing BLE task period to 100ms fixed that, but I am still afraid that it may still happend in field. The same happens on ble peripheral sample if BLE task period is shortened from 1s to 10ms. I am using nucleo_f446re board and Samsung Galaxy S23 as a central.

To Reproduce

1. Change BLE task period in zephyr\samples\bluetooth\peripheral\src\main.c:379 from 1s to 10ms and remove _ONE_TIME from advertising options in zephyr\samples\bluetooth\peripheral\src\main.c:277
2. Build and flash application.
3. Connect to the device with the phone.
4. Set Battery Level notification on in Battery Service.
5. Disconnect.
6. Check if advertising is restarted (repeat if it is advertising, it's not 100% reproducable)

Expected behavior

Impact

Logs and console output

Environment (please complete the following information):

• OS: (e.g. Linux, MacOS, Windows)
• Toolchain (e.g Zephyr SDK, ...)
• Commit SHA or Version used

Additional context

[github-actions]

Hi @szymonwid! We appreciate you submitting your first issue for our open-source project. 🌟

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[fabocode]

Hi @szymonwid thank you for reporting this issue.

I took the time to reproduce this issue, but I am not being able to get the same results as you. Can you please provide more detailed information?

I am working from master branch in zephyr/samples/bluetooth/peripheral sample, I provided the recycle callback function, called the advertisement start function inside the recycle function, and tested by reducing the ble task from main() function from 1s to 1-15ms but every time the recycled callback is successfully called.

Maybe you can try with the latest changes made in master and check if the issue persists. If you can share more code, can be also help!

[github-actions]

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