Ble Invalid Attribute Handle from ble stack when adding multiple descriptors

[flyingisoverrated]

Hello,

I am working on a project with BLE using esp-idf version 4.4.3.

I am using the legacy way of creating services, characteristics and descriptors (esp_ble_gatts_add_char, esp_ble_gatts_add_char_descr)

and handling the return of the attribute handles in the server event handler callback.

Everything is fine when I'm creating multiple services and characteristics without descriptors.

I have about 7 caracteristics in a single service and each one of those has a descriptor.

I get a status of ESP_GATT_ERROR when handling the ESP_GATTS_ADD_CHAR_DESCR_EVT and get an invalid handle 0x00 for some descriptors (only for the last 1 or 2), after that some of the characteristics also get an invalid handle in the corresponding create event.

Has anybody run into something similar? I am stuck on this for several days and this is what I've tried so far:

- Increasing the stack size of the BTU and BTC task stack sizes

- Trying to synchronize all of the create events and their handlers in the callback

If anyone can give me some new methods to try or point me into a direction to search.