qmk-firmware/tmk_core/readme.md

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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](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
* 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](https://github.com/tmk/tmk_keyboard/blob/master/tmk_core/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 | | | | Keys / /_/_/_/_/_/_/_/ /|
|| Host || | Console | |e| | Mousekey | | | |<----------/ /_/_/_/_/_/_/_/ / /
||________||/.<-----------| |r| | Report | | | | 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
* serial_soft.c - Asynchronous Serial protocol implemented by software
Coding Style
-------------
- Doesn't use Tab to indent, use 4-spaces instead.