ESP32/Arduino code to have morse paddle as BLE keyboard

esp32_morse_keyboard.ino

//Inspriation from http://oz1jhm.dk/content/hamradio-solutions-vband-interface
//But modified to work with esp32 BLE as a keyboard.
//Am using as input to the iOS "Morse-It" app

//Note that this BleKeyboard library needs to be download and added - see https://github.com/T-vK/ESP32-BLE-Keyboard
#include <BleKeyboard.h>
#include <Bounce2.h>

# define DIH_PIN 26
# define DAH_PIN 25
# define BOUNCE_INTERVAL 5

BleKeyboard bleKeyboard("BLE_MorseKey");

Bounce bDih = Bounce();
Bounce bDah = Bounce();

void setup() {
  bDih.attach(DIH_PIN, INPUT_PULLUP);
  bDih.interval(BOUNCE_INTERVAL); 

  bDah.attach(DAH_PIN, INPUT_PULLUP);
  bDah.interval(BOUNCE_INTERVAL); 

  bleKeyboard.begin();
}

void loop() {
  if(bleKeyboard.isConnected()) {
    bDih.update();
    bDah.update();
    
    if ( bDih.fell() ) {
      bleKeyboard.press(KEY_F1);
    }
    if ( bDih.rose() ) {
      bleKeyboard.release(KEY_F1); 
    }
    
    if ( bDah.fell() ) {
      bleKeyboard.press(KEY_F2);
    }
    if ( bDah.rose() ) {
      bleKeyboard.release(KEY_F2); 
    }  
  } else {
    delay(20);
  }
}