USBHIDKeyboard boot protocol

[aberoev]

Seeing this commit I was very hopeful to start making my ESP32S3 dev module work as a keyboard emulator for my hardware sound mixer, but no dice. Everything compiles and works great in Windows 10, but not on the hardware sound mixer which requires a boot protocol keyboard. I have tested the sound mixer with regular keyboards and with a atmega32u4 / Nicohood HID project Bootkeyboard contraption which works.

Using 3.0.0Alpha3

Hoping for some hints. Using a Lilygo T-QT with these settings

[aberoev]

Here's my sketch

#include "USB.h"
#include "USBHIDKeyboard.h"
USBHIDKeyboard Keyboard;


void setup() {
  pinMode(0, INPUT_PULLUP);
  Keyboard.begin();
  USB.begin();
}

void loop() {
  while (digitalRead(0) == HIGH) {
    // do nothing until pin 2 goes low

  }
      Keyboard.press(KEY_UP_ARROW);
      delay(100);
      Keyboard.releaseAll();
 
}

[steffen9000]

Hi aberoev,

did you ever figure out if there is a way to solve this using the ESP32S3? I am trying to control a KVM switch by emulating keyboard shortcuts to toggle between inputs, but apparently, the switch also requires a boot protocol keyboard.

[GarrettBlackmon]

Same man, Did you find a way?

You can do it with a picoW according to this thread.
https://forum.level1techs.com/t/controlling-kvm-via-circuitpython-esp32-s3-hid-emulation/212130/2

If I cant figure it out soon I'll probably go this route.