gattc_discover_descriptors stuck, no event raised

[amplatzer]

Hi Team,

peripheral chip: Amiccom A7107
master: ESP32-S3R2@ Mpy: 1.23.0

There is a BLE peripheral that I'm able to connect and subscribe with the NRFconnect or lightblue APP.
but with ESP32 client (@ micropython 1.23.0), after I discover all characteristics, I call ble.gattc_discover_descriptors(3,80,85) .

I was expecting _IRQ_GATTC_DESCRIPTOR_RESULT event, so I can subscribe to the peripheral by changing value of the descriptor 0x2902, but nothing.

the code stuck, until the peripheral disconnect from ESP32, and event _IRQ_GATTC_DESCRIPTOR_DONE was finally raised.

Any idea why no DESCRIPTOR was found?
PS: The code works fine with other similar peripherals except this particular one.

[bidrohini]

Try to verify with a BLE scanner (like nRF Connect) whether the 0x2902 descriptor is actually present for that characteristic.

[amplatzer]

Try to verify with a BLE scanner (like nRF Connect) whether the 0x2902 descriptor is actually present for that characteristic.

thanks for the response, like I mentioned, I'm able to connect and subscribe with the NRFconnect or Lightblue APP..

[amplatzer]