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qmk_firmware/keyboards/converter/usb_usb
History
Balz Guenat c8222043fc wow, it builds! added empty matrix.c and moved custom matrix code to custom_matrix.cpp 
still untested because of hardware availability :(
 		7 years ago
..
keymaps/default some major steps toward making the usb-usb converter work 7 years ago
Makefile start working on usb-usb converter port 7 years ago
Makefile.8mhz start working on usb-usb converter port 7 years ago
Makefile.debug start working on usb-usb converter port 7 years ago
Makefile.unimap start working on usb-usb converter port 7 years ago
README start working on usb-usb converter port 7 years ago
config.h some major steps toward making the usb-usb converter work 7 years ago
custom_matrix.cpp wow, it builds! added empty matrix.c and moved custom matrix code to custom_matrix.cpp 7 years ago
keymap.c start working on usb-usb converter port 7 years ago
main.c start working on usb-usb converter port 7 years ago
matrix.c wow, it builds! added empty matrix.c and moved custom matrix code to custom_matrix.cpp 7 years ago
rules.mk wow, it builds! added empty matrix.c and moved custom matrix code to custom_matrix.cpp 7 years ago
unimap.c start working on usb-usb converter port 7 years ago
usb_usb.c start working on usb-usb converter port 7 years ago
usb_usb.h start working on usb-usb converter port 7 years ago

README 

USB to USB keyboard protocol converter
======================================
See for detail and discussion.
https://geekhack.org/index.php?topic=69169.0


Hardware requirement
--------------------
There are two options.

### TMK USB-USB Converter
You can buy a fully assembled converter from me here.

    https://geekhack.org/index.php?topic=69169.0

### Arduino Leonardo + Circuit@Home USB Host Shield 2.0
Buying Arduino Leonardo and USB Host Shield 2.0(from Circuit@home) will be better, you won't need even soldering iron.

    http://arduino.cc/en/Main/ArduinoBoardLeonardo 
    https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino-assembled/

Other compatible boards like Arduino's Shield will also work well but I think Sparkfun's needs to be modified.

    http://arduino.cc/en/Main/ArduinoUSBHostShield
    https://www.sparkfun.com/products/9947

Also Pro Micro 3.3V(not Mini) or Teensy with mini host shield will work with some fixes on signal/power routing.

    https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
    https://www.sparkfun.com/products/12587
    https://www.pjrc.com/teensy/td_libs_USBHostShield.html



Build firmware
--------------
Build.

    $ git clone git://github.com/tmk/tmk_keyboard.git
    $ cd tmk_keyboard
    $ git submodule init
    $ git submodule update
    $ cd converter/usb_usb
    $ make

And Program converter. Push button on TMK converter and just run this.

    $ make dfu


In case of Leonardo push reset button then run command. Serial port name(COM17) depends your system. On Linux I got /dev/ttyACM0.

    $ DEV=COM17 make program
    or
    $ avrdude -patmega32u4 -cavr109 -b57600 -Uflash:w:usb_usb.hex -PCOM17



Limitation
----------
Only supports 'HID Boot protocol'.

Note that the converter can host only USB "boot protocol" keyboard(6KRO), not NKRO, it is possible to support NKRO keyboard but you will need to write HID report parser for that. Every NKRO keyboard can have different HID report and it is difficult to support all kind of NKRO keyboards in the market.



Keymap editor
-------------
You can editor keymap and download firmware with web brwoser.

- http://www.tmk-kbd.com/tmk_keyboard/editor/unimap/?usb_usb



Update
------
2014/12/11  Added Hub support(confirmed with HHKB pro2)
2016/09/10  Unimap editor support
2016/10/18  Fix LED state at startup



Resource
--------
USB Host Sheild 2.0
    https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino
    https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
USB Host Sheild 2.0 source
    https://github.com/felis/USB_Host_Shield_2.0
Arduino USB Host Shield(with bootst converter)
    http://arduino.cc/en/Main/ArduinoUSBHostShield
Arduino source
    https://github.com/arduino/Arduino/hardware/arduino/{cores,variants}
Initial release of TMK USB-USB converter
    https://geekhack.org/index.php?topic=33057.msg653549#msg653549
    http://deskthority.net/workshop-f7/is-remapping-a-usb-keyboard-using-teensy-possible-t2841-30.html#p74854
Arduino-based hardware keyboard remapper - Colemak forum
    http://forum.colemak.com/viewtopic.php?id=1561
Teensy + Host Shield
    http://www.pjrc.com/teensy/td_libs_USBHostShield.html