BLE_notify demo stuck after less than a minute, and then disconnect

[trustmiao]

We are testing the BLE_notify example. We tested with two means of connection, from a ESP32 running BLE_client without turning on/off notification, and it will stuck. We also tested connection from "nRF connect" from an iphone, it also stuck.
Any hint?

I was thinking if BLE_notify can't work in 100fps, then the demo won't be there. If we with to transfer 10bytes in 100fps, what will be prefered? Notify or write?

Thanks for any input.

[trustmiao]

We 've tested write, it works for 300 seconds sofar without disconnection, sending bytes every 10 ms.

[chegewara]

At first try to add this function to your code when you are connected:
https://docs.espressif.com/projects/esp ... t8uint16_t

The problem is that code required to use it is implemented in cpp_utils, but is not pushed to ble arduino library (you will need to alter BLEServer).
Another thing is congestion, check your logs to see if you have ESP_GATTS_CONGEST_EVT.