TMK Keyboard Firmware Core Library
This is a keyboard firmware library with some useful features for Atmel AVR and Cortex-M.
Source code is available here: https://github.com/tmk/tmk_keyboard/tree/master/tmk_core
Updates
2016/02/10
flabbergast's Chibios protocol was merged from https://github.com/flabbergast/tmk_keyboard/tree/chibios. See protocol/chibios/README.md. Chibios protocol supports Cortex-M such as STM32 and Kinetis.
2015/04/22
separated with TMK Keyboard Firmware Collection
Features
These features can be used in your keyboard.
- Multi-layer Keymap - Multiple keyboard layouts with layer switching
 - Mouse key - Mouse control with keyboard
 - System Control Key - Power Down, Sleep, Wake Up and USB Remote Wake up
 - Media Control Key - Volume Down/Up, Mute, Next/Prev track, Play, Stop and etc
 - USB NKRO - 248 keys(+ 8 modifiers) simultaneously
 - PS/2 mouse support - PS/2 mouse(TrackPoint) as composite device
 - Keyboard protocols - PS/2, ADB, M0110, Sun and other old keyboard protocols
 - User Function - Customizable function of key with writing code
 - Macro - Very primitive at this time
 - Keyboard Tricks - Oneshot modifier and modifier with tapping feature
 - Debug Console - Messages for debug and interaction with firmware
 - Virtual DIP Switch - Configurations stored EEPROM(Boot Magic)
 - Locking CapsLock - Mechanical switch support for CapsLock
 - Breathing Sleep LED - Sleep indicator with charm during USB suspend
 - Backlight - Control backlight levels
 
TMK Keyboard Firmware Collection
Complete firmwares for various keyboards and protocol converters.
https://github.com/tmk/tmk_keyboard
License
GPLv2 or later. Some protocol files are under Modified BSD License. ChibiOS, LUFA and V-USB stack have their own license respectively.
Build Firmware and Program Controller
See doc/build.md.
Start Your Own Project
TBD
Config.h Options
1. USB vendor/product ID and device description
#define VENDOR_ID       0xFEED
#define PRODUCT_ID      0xBEEF
#define MANUFACTURER    t.m.k.
#define PRODUCT         Macway mod
2. Keyboard matrix configuration
#define MATRIX_ROWS 8
#define MATRIX_COLS 8
#define MATRIX_HAS_GHOST
Architecture
Architecture Diagram
                           +---------------+---------------+-------------+
                           |    Host       |   Keyboard    | Matrix, LED |
   ___________             |-----------+-+ +-------------+ | +-----------|
  /          /| Keys/Mouse | Protocol  |d| | Action      | | | Protocol  |
 /__________/ |<-----------|  LUFA     |r| |  Layer, Tap | | |  Matrix   |
 |.--------.| |   LED      |  V-USB    |i| |-------------| | |  PS/2,IBM |             __________________
 ||        || |----------->|  UART     |v| | Keymap      | | |  ADB,M0110|  Keys      / /_/_/_/_/_/_/_/ /|
 ||  Host  || |  Console   |           |e| | Mousekey    | | |  SUN/NEWS |<----------/ /_/_/_/_/_/_/_/ / /
 ||________||/.<-----------|           |r| | Report      | | |  X68K/PC98| Control  / /_/_/_/_/_/_/_/ / /
 `_========_'/|            |---------------------------------------------|-------->/___ /_______/ ___/ /
 |_o______o_|/             | Sendchar, Print, Debug, Command, ...        |         |_________________|/
                           +---------------------------------------------+              Keyboard
Debugging
Use PJRC's hid_listen to see debug messages. You can use the tool for debug even if firmware use LUFA stack.
You can use xprintf() to display debug info on hid_listen, see common/xprintf.h.
Files and Directories
Top
- common/ - common codes
 - protocol/ - keyboard protocol support
 - doc/ - documents
 - common.mk - Makefile for common
 - protocol.mk - Makefile for protocol
 - rules.mk - Makefile for build rules
 
Common
- host.h
 - host_driver.h
 - keyboard.h
 - command.h
 - keymap.h
 - action.h
 - keycode.h
 - matrix.h
 - led.h
 - mousekey.h
 - report.h
 - debug.h
 - print.h
 - bootloader.h
 - sendchar.h
 - timer.h
 - util.h
 
Keyboard Protocols
- lufa/ - LUFA USB stack
 - vusb/ - Objective Development V-USB
 - ps2.c - PS/2 protocol
 - adb.c - Apple Desktop Bus protocol
 - m0110.c - Macintosh 128K/512K/Plus keyboard protocol
 - news.c - Sony NEWS keyboard protocol
 - x68k.c - Sharp X68000 keyboard protocol
 - serial_soft.c - Asynchronous Serial protocol implemented by software
 
Coding Style
- Doesn't use Tab to indent, use 4-spaces instead.