I’m trying to implement the example BLE application on ESP32 DEVKIT V1.
I can compile and run successfully the example Arduino program as found in Examples, in fact, I can see the following on the console:
Waiting for connections...  ___ __ __ / _ )/ /_ _____ / /__ / _ / / // / _ \/ '_/ /____/_/\_, /_//_/_/\_\ /___/ v0.6.1 on ESP32
Moreover, I can see the ESP32 announce itself over BT using the scan function of my laptop.
I even created an app on my Android phone (Samsung A5 2017 SM-A420F) running Android 8.0.0.
The app contains a single button and is targeted to ESP32 / Bluetooth.
However, when I start it a red dot is shown on the title bar and it saying
“wasn’t online yet”
Note that the phone is for sure able to work with BLE as I developed several apps using AppInventor2 and its BLE library, that works fine with the same ESP32 DEVKIT module, so the hardware is definitively capable to process BLE.
So, I’m stuck there, any chance to make it work?
Is it feasible to achieve a direct connection between the app running on Android and the ESP32 running Bylnk library ?