ARDUINO ESP32 BLUETOOTH 7219 DOT MATRIX 8x8 MEDIA CONTROLLER

BT SENDER:
BT Media Controller Rotary Dial
sending following commands via BT
Vol up
Vol down
Play/Pause
Next
Previous
Playlist 1
Playlist 2


BT RECEIVER:
ESP32
receiving above commands and
sending via Wireless LAN ( or direct connection via USB to Linux )
HTTP Get request:
http.begin("http://my-ip:3001/play-pause"); //Specify the URL
int httpCode = http.GET();

- and showing values from 0-100
on the 8x8 Dot Matrix display 7219 with controller

1.) AT BOOT sending fixed value and showing -30
2.) While rotating dial -> Increments CW +1 / CCW -1