I can't find any documentation on how to handle the ack when using ble_gattc_indicate_custom. I am sending a large file and want to wait for the ack before sending the next data chunk but can't figure out how to know when the ack is received.

I applied the patches to the demo code as shown in this thread: https://github.com/espressif/esp-idf/issues/12397 and then updated the config as you suggested for BLE only and this works. I will cleanup when time allows and post an update then.

Thanks for your help.

I am working on code to adjust the volume on a phone as a way of triggering the camera. I started with the esp_hid_device code in the esp-idf v4.4 branch but made a bunch of changes so that both a BT and a BLE connection launch the same demo script (run_example). This looks for a keyboard input and ...