keychron_qmk_firmware/docs/tmk_readme.md

# TMK Documenation

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            - 120 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



Projects
--------
You can find some keyboard specific projects under `converter` and `keyboard` directory.

## Main projects

### OLKB products
* [planck](keyboards/planck/)                - [Planck] Ortholinear 40% keyboard
* [preonic](keyboards/preonic/)              - [Preonic] Ortholinear 50% keyboard
* [atomic](keyboards/atomic/)                - [Atomic] Ortholinear 60% keyboard

### Ergodox EZ
* [ergodox_ez](keyboards/ergodox/ez)         - [Ergodox_EZ] Assembled split keyboard

## Other projects

### converter
* [ps2_usb](converter/ps2_usb/)             - [PS/2 keyboard to USB][GH_ps2]
* [adb_usb](converter/adb_usb/)             - [ADB keyboard to USB][GH_adb]
* [m0110_usb](converter/m0110_usb)          - [Macintosh 128K/512K/Plus keyboard to USB][GH_m0110]
* [terminal_usb](converter/terminal_usb/)   - [IBM Model M terminal keyboard(PS/2 scancode set3) to USB][GH_terminal]
* [news_usb](converter/news_usb/)           - [Sony NEWS keyboard to USB][GH_news]
* [x68k_usb](converter/x68k_usb/)           - [Sharp X68000 keyboard to USB][GH_x68k]
* [sun_usb](converter/sun_usb/)             - [Sun] to USB(type4, 5 and 3?)
* [pc98_usb](converter/pc98_usb/)           - [PC98] to USB
* [usb_usb](converter/usb_usb/)             - USB to USB(experimental)
* [ascii_usb](converter/ascii_usb/)         - ASCII(Serial console terminal) to USB
* [ibm4704_usb](converter/ibm4704_usb)      - [IBM 4704 keyboard Converter][GH_ibm4704]

### keyboard
* [hhkb](keyboards/hhkb/)                    - [Happy Hacking Keyboard pro][GH_hhkb] hasu's main board
* [gh60](keyboards/gh60/)                    - [GH60] DIY 60% keyboard [prototype][GH60_proto] hasu's second board
* [hbkb](keyboards/hbkb/)                    - [Happy Buckling spring keyboard][GH_hbkb](IBM Model M 60% mod)
* [hid_liber](keyboards/hid_liber/)          - [HID liberation][HID_liber] controller (by alaricljs)
* [phantom](keyboards/phantom/)              - [Phantom] keyboard (by Tranquilite)
* [IIgs_Standard](keyboards/IIgs/)           - Apple [IIGS] keyboard mod(by JeffreySung)
* [macway](keyboards/macway/)                - [Compact keyboard mod][GH_macway] [retired]
* [KMAC](keyboards/kmac/)                    - Korean custom keyboard
* [Lightsaber](keyboards/lightsaber/)        - Korean custom keyboard
* [Infinity](keyboards/infinity/)            - Massdrop [Infinity keyboard][Infinity]
* [NerD](keyboards/nerd/)                    - Korean custom keyboard
* [KittenPaw](keyboards/kitten_paw)          - Custom Majestouch controller
* [Lightpad](keyboards/lightpad)             - Korean custom keypad
* [ghost_squid](keyboards/ghost_squid/)      - [The Ghost Squid][ghost_squid] controller for [Cooler Master QuickFire XT][cmxt]

### Extenal projects using tmk_keyboard
* [ErgoDox_cub-uanic][cub-uanic]            - Split Ergonomic Keyboard [ErgoDox][ergodox_org]
* [mcdox][mcdox_tmk]                        - [mcdox][mcdox]


[GH_macway]:    http://geekhack.org/showwiki.php?title=Island:11930
[GH_hhkb]:      http://geekhack.org/showwiki.php?title=Island:12047
[GH_ps2]:       http://geekhack.org/showwiki.php?title=Island:14618
[GH_adb]:       http://geekhack.org/showwiki.php?title=Island:14290
[GH_hhkb_bt]:   http://geekhack.org/showwiki.php?title=Island:20851
[GH_m0110]:     http://geekhack.org/showwiki.php?title=Island:24965
[GH_news]:      http://geekhack.org/showwiki.php?title=Island:25759
[GH_terminal]:  http://geekhack.org/showwiki.php?title=Island:27272
[GH_x68k]:      http://geekhack.org/showwiki.php?title=Island:29060
[GH_hbkb]:      http://geekhack.org/showwiki.php?title=Island:29483
[GH_ibm4704]:   http://geekhack.org/index.php?topic=54706.0
[HID_liber]:    http://deskthority.net/wiki/HID_Liberation_Device_-_DIY_Instructions
[Phantom]:      http://geekhack.org/index.php?topic=26742
[GH60]:         http://geekhack.org/index.php?topic=34959
[GH60_proto]:   http://geekhack.org/index.php?topic=37570.0
[PC98]:         http://en.wikipedia.org/wiki/NEC_PC-9801
[Sun]:          http://en.wikipedia.org/wiki/Sun-3
[IIGS]:         http://en.wikipedia.org/wiki/Apple_IIGS
[Infinity]:     https://www.massdrop.com/buy/infinity-keyboard-kit
[ghost_squid]:  http://deskthority.net/wiki/Costar_replacement_controllers#The_Ghost_Squid
[cmxt]:         http://gaming.coolermaster.com/en/products/keyboard/quickfirext/
[ergodox_org]:  http://ergodox.org/
[cub-uanic]:    https://github.com/cub-uanic/tmk_keyboard/tree/master/keyboard/ergodox
[mcdox]:        https://github.com/DavidMcEwan/mcdox
[mcdox_tmk]:    https://github.com/DavidMcEwan/tmk_keyboard/tree/master/keyboard/mcdox
[Planck]:       http://olkb.co/planck
[Preonic]:      http://olkb.co/preonic
[Atomic]:       http://olkb.co/atomic
[Ergodox_EZ]:   https://www.indiegogo.com/projects/ergodox-ez-an-incredible-mechanical-keyboard


License
-------
**GPLv2** or later. Some protocol files are under **Modified BSD License**.

Third party libraries like LUFA, PJRC and V-USB have their own license respectively.



Build Firmware and Program Controller
-------------------------------------
See [build environment setup](build_environment_setup.md), or the readme in the particular keyboards/* folder.



Change your keymap
------------------
See [keymap.md](keymap.md).



Magic Commands
--------------
To see help press `Magic` + `H`.

`Magic` key combination is `LShift` + `RShift` in many project, but `Power` key on ADB converter. 
`Magic` keybind can be vary on each project, check `config.h` in project directory.

Following commands can be also executed with `Magic` + key. In console mode `Magic` keybind is not needed.

    ----- Command Help -----
    c:      enter console mode
    d:      toggle debug enable
    x:      toggle matrix debug
    k:      toggle keyboard debug
    m:      toggle mouse debug
    v:      print device version & info
    t:      print timer count
    s:      print status
    e:	    print eeprom config
    n:	    toggle NKRO
    0/F10:  switch to Layer0
    1/F1:   switch to Layer1
    2/F2:   switch to Layer2
    3/F3:   switch to Layer3
    4/F4:   switch to Layer4
    PScr:   power down/remote wake-up
    Caps:   Lock Keyboard(Child Proof)
    Paus:   jump to bootloader



Boot Magic Configuration - Virtual DIP Switch
---------------------------------------------
Boot Magic are executed during boot up time. Press Magic key below then plug in keyboard cable.
Note that you must use keys of **Layer 0** as Magic keys. These settings are stored in EEPROM so that retain your configure over power cycles.

To avoid configuring accidentally additive salt key `KC_SPACE` also needs to be pressed along with the following configuration keys. The salt key is configurable in `config.h`. See [tmk_core/common/bootmagic.h](/tmk_core/common/bootmagic.h).

#### General
- Skip reading EEPROM to start with default configuration(`ESC`)
- Clear configuration stored in EEPROM to reset configuration(`Backspace`)

#### Bootloader
- Kick up Bootloader(`B`)

#### Debug
- Debug enable(`D`)
- Debug matrix enable(`D`+`X`)
- Debug keyboard enable(`D`+`K`)
- Debug mouse enable(`D`+`M`)

#### Keymap
- Swap Control and CapsLock(`Left Control`)
- Change CapsLock to Control(`Caps Lock`)
- Swap LeftAlt and Gui(`Left Alt`)
- Swap RightAlt and Gui(`Right Alt`)
- Disable Gui(`Left Gui`)
- Swap Grave and Escape(`Grave`)
- Swap BackSlash and BackSpace(`Back Slash`)
- Enable NKRO on boot(`N`)

#### Default Layer
- Set Default Layer to 0(`0`)
- Set Default Layer to 1(`1`)
- Set Default Layer to 2(`2`)
- Set Default Layer to 3(`3`)
- Set Default Layer to 4(`4`)
- Set Default Layer to 5(`5`)
- Set Default Layer to 6(`6`)
- Set Default Layer to 7(`7`)



Mechanical Locking support
--------------------------
This feature makes it possible for you to use mechanical locking switch for `CapsLock`, `NumLock` 
or `ScrollLock`. To enable this feature define these macros in `config.h` and use `KC_LCAP`, `KC_LN
UM` or `KC_LSCR` in keymap for locking key instead of normal `KC_CAPS`, `KC_NLCK` or `KC_SLCK`. Res
ync option tries to keep switch state consistent with keyboard LED state.
 
    #define LOCKING_SUPPORT_ENABLE
    #define LOCKING_RESYNC_ENABLE



Start Your Own Project
-----------------------
**TBD**



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 `tmk_core/common/xprintf.h`.



Files and Directories
-------------------
### Top
* tmk_core/     - core library
* keyboards/     - keyboard projects
* converter/    - protocol converter projects
* doc/          - documents



Coding Style
-------------
- Doesn't use Tab to indent, use 4-spaces instead.



Other Keyboard Firmware Projects
------------------
You can learn a lot about keyboard firmware from these. See [docs/other_projects.md](other_projects.md).