EspUsbHostCustomDeviceCallbacks

EspUsbHostCustomDeviceCallbacks

日本語版: README.ja.md

Shows how to define your own device connect/disconnect callbacks and add logic around the common espUsbHostPrint(device) summary helper.

Hardware

• ESP32-S3 (or another board supported by Arduino-ESP32 USB Host)
• Any USB device (keyboard, mouse, hub, etc.)

What it does

• Prints a common one-line device summary when a USB device connects or disconnects
• Checks the connected device's interfaces and reports whether it looks like a keyboard
• Reports whether the connected device is a USB hub
• Tracks and prints the current device count
• Prints the full descriptor dump when d is sent over Serial

Serial commands

Command	Action
d	Print full descriptor dump for all connected devices

Key APIs

• usb.onDeviceConnected(onDeviceConnected) — register a named callback function
• usb.onDeviceDisconnected(onDeviceDisconnected) — register a named disconnect callback
• espUsbHostPrint(device) — print the common one-line device summary
• usb.getInterfaces(address, interfaces, maxInterfaces) — inspect interfaces inside the callback
• device.isHub — true when the connected device is a USB hub
• usb.deviceCount() — get the number of currently connected devices
• usb.printAllDeviceInfo() — optional full descriptor dump

Expected Serial output

EspUsbHost custom device callbacks example start
Press 'd' to print the full descriptor dump.
connected: device: address=1 portId=0x01 vid=045e pid=07a5 class=0x00(Device) speed=full product="USB Keyboard"
  this device has a keyboard interface
  total devices: 1
disconnected: device: address=1 portId=0x01 vid=045e pid=07a5 class=0x00(Device) speed=full product="USB Keyboard"
  total devices: 0