What USB protocol should the ESP32-S3 use to control presets on the Tonex One?

[DastAudio]

Hi everyone,

I’m currently researching how USB communication with the Tonex One works in order to switch presets.
From what I’ve read, it does not use USB MIDI, and so far I haven’t found clear documentation about what kind of protocol the pedal expects.

My idea is to use an ESP32-S3 board to send the data over USB, and I’d like to know what protocol I should implement so that the Tonex One correctly interprets the program change.

Does anyone know where I could find information or documentation about this?
Any guidance would be very helpful while I wait for the rest of the hardware to build a Tonex Control.

Thanks a lot in advance!

[Builty]

Hi. This project does exactly what you describe, using an ESP32-S3 to control the Tonex One.
All of the source code is available here, to either use as it is, or fork it and make your own changes.

[madejm]

Also the protocol is roughly described in https://github.com/vit3k/tonex_controller. It explains how it uses HDLC and custom IK Multimedia message coding. All requests and responses you can find in this repository in usb_tonex_one.c