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This is a library for using USB Host with ESP32.

Target board

  • ESP32-S3-DevKitC
  • M5Stack ATOMS3

function

  • USB Keybord
  • USB Mouse

Usage

#include "EspUsbHost.h"

class MyEspUsbHost : public EspUsbHost {
  void onKeyboardKey(uint8_t ascii, uint8_t keycode, uint8_t modifier) {
    if (' ' <= ascii && ascii <= '~') {
      Serial.printf("%c", ascii);
    } else if (ascii == '\r') {
      Serial.println();
    }
  };
};

MyEspUsbHost usbHost;

void setup() {
  Serial.begin(115200);
  delay(500);

  usbHost.begin();
  usbHost.setHIDLocal(HID_LOCAL_Japan_Katakana);
}

void loop() {
  usbHost.task();
}

Virtual function

common

  • virtual void onData(const usb_transfer_t *transfer);
  • virtual void onGone(const usb_host_client_event_msg_t *eventMsg);

Keyboard

  • virtual uint8_t getKeycodeToAscii(uint8_t keycode, uint8_t shift);
  • virtual void onKeyboard(hid_keyboard_report_t report, hid_keyboard_report_t last_report);
  • virtual void onKeyboardKey(uint8_t ascii, uint8_t keycode, uint8_t modifier);

Mouse

  • virtual void onMouse(hid_mouse_report_t report, uint8_t last_buttons);
  • virtual void onMouseButtons(hid_mouse_report_t report, uint8_t last_buttons);
  • virtual void onMouseMove(hid_mouse_report_t report);

About

Library for using USB Host with ESP32

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