Pairing is slow and unable to connect again. ANDROID

[luissperber]

Hi there. I've been having problems with the ESP32 and an Android TV. Firstly, the pairing is slow and sometimes fails (the ESP32 is not discovered). I am completely unable to reconnect unless I remove the ESP from my Android and pair it again.

I've only been trying to send a keypress, so I don't think it's a code problem. I've tried versions 0.2.3, 0.3.0, and 0.3.2 beta, and none of them have worked.

include

const int buttonPin1 = 16; boolean oldPinState1 = LOW;

void setup() { pinMode(buttonPin1, INPUT_PULLDOWN); bleKeyboard.begin(); }

void loop() { if(bleKeyboard.isConnected()) { if (digitalRead(buttonPin1) == HIGH) { if (oldPinState1 == LOW) { bleKeyboard.write(KEY_UP_ARROW); delay (100); bleKeyboard.releaseAll(); } oldPinState1 = HIGH; } else { oldPinState1 = LOW; } delay(10); } }

The interesting thing is that it works on Windows 11. I can pair, shut down, and connect; everything works perfectly.

Do you have any solutions or suggestions? Thanks

[luissperber]

Finally can solve this:

1. Use NimBLE 1.4.1 and ESP32-BLE-Keyboard 0.3.2b.
2. Configure it to use NimBLE mode instead of ClassicBLE.
3. Done!

PS: To activate NimBLE mode: Go to the ESP32-BLE-Keyboard library folder, open BleKeyboard.h, and uncomment the 2nd line: "#define USE_NIMBLE"."

Now Android devices connect almost instantly and reconnect well and fast.