qmk_firmware/converter/usb_usb
Thomas Russell Murphy 3ee5f565ae Spellchecking converter README files.
..
Makefile Fix BOOTLOADER_SIZE setting
README Spellchecking converter README files.
config.h Fix projects for new keycodes
keymap.c Fix keymap to adjust new keyboard.c.
led.c Add USB to USB converter. unmature.
main.cpp changes function name keyboard_proc to keyboard_task
matrix.c Fix projects for new keycodes

README

USB to USB keyboard protocol converter
======================================

Hardware requirement
--------------------
Arduino Leonardo
    http://arduino.cc/en/Main/ArduinoBoardLeonardo 

Circuit@Home USB Host Shield 2.0
    http://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino


Build firmware
--------------
    $ git clone git://github.com/tmk/tmk_keyboard.git
    $ cd tmk_keyboard
    $ git checkout usb_hid
    $ git submodule init
    $ git submodule update

and download LUFA and unzip under protocol/lufa and edit LUFA_PATH in protocol/lufa.mk. Then,

    $ cd converter/usb_usb
    $ make

You will get usb_usb.hex if you are lucky.
Program your Leonardo with avrdude(or easy-going Arduino IDE):

    $ avrdude -patmega32u4 -cavr109 -PCOM17 -b57600 -Uflash:w:usb_usb.hex


Limitation
----------
Only supports 'HID Boot protocol'.
Not support keyboard LED yet.