examples

Raw Gadget Examples

This directory contains two examples of using Raw Gadget:

• keyboard.c emulates a USB keyboard that keeps sending keypresses of the letter x. This example also handles the USB device being reset by the host;

• printer.c emulates the enumeration stage of a USB printer.

When run without arguments, the examples rely on the Dummy HCD/UDC module to emulate virtual devices that connect to the kernel they are running on. If you want to use them with a physical host instead, you need to provide the UDC device and driver names as arguments (e.g. both are 20980000.usb for Raspberry Pi Zero).

Also see tests/gadget.c for an example of a device that is used with the Raw Gadget testing suite.

Usage

Build:

make

For keyboard

Run:

sudo ./keyboard

Or:

sudo ./keyboard 20980000.usb 20980000.usb

For printer

Run:

sudo ./printer

Or:

sudo ./printer 20980000.usb 20980000.usb