2 https://github.com/tmk/tmk_keyboard/blob/master/doc/keymap.md
5 See [doc/keycode.txt](https://github.com/tmk/tmk_keyboard/blob/master/doc/keycode.txt).
6 Keycodes are actually defined in [common/keycode.h](https://github.com/tmk/tmk_keyboard/blob/master/common/keycode.h).
9 Use keycode for Print Screen(`KC_PSCREEN` or `KC_PSCR`) instead of `KC_SYSREQ`. Key combination of 'Alt + Print Screen' is recognized as 'System request'.
11 See [issue #168](https://github.com/tmk/tmk_keyboard/issues/168) and
12 - http://en.wikipedia.org/wiki/Magic_SysRq_key
13 - http://en.wikipedia.org/wiki/System_request
15 ## Power key doesn't work
16 Use `KC_PWR` instead of `KC_POWER` or vice versa.
17 - `KC_PWR` works with Windows and Linux, not with OSX.
18 - `KC_POWER` works with OSX and Linux, not with Windows.
20 http://geekhack.org/index.php?topic=14290.msg1327264#msg1327264
23 Solves my personal 'the' problem. I often got 'the' or 'THe' wrongly instead of 'The'. Oneshot Shift mitgates this for me.
24 https://github.com/tmk/tmk_keyboard/issues/67
26 ## Modifier/Layer stuck
27 Modifier keys or layers can be stuck unless layer switching is configured properly.
28 For Modifier keys and layer actions you have to place `KC_TRANS` on same position of destination layer to unregister the modifier key or return to previous layer on release event.
30 https://github.com/tmk/tmk_keyboard/blob/master/doc/keymap.md#31-momentary-switching
31 http://geekhack.org/index.php?topic=57008.msg1492604#msg1492604
34 ## Mechanical Lock Switch Support
35 https://github.com/tmk/tmk_keyboard#mechanical-locking-support
37 This feature is for *mechanical lock switch* like this Alps one.
38 http://deskthority.net/wiki/Alps_SKCL_Lock
40 Using enabling this feature and using keycodes `LCAP`, `LNUM` or `LSCR` in keymap you can use physical locking CapsLock, NumLock or ScrollLock keys as you expected.
42 Old vintage mechanical keyboards occasionally have lock switches but modern ones don't have. ***You don't need this feature in most case and just use keycodes `CAPS`, `NLCK` and `SLCK`.***
45 ## Input special charactors other than ASCII like Cédille 'Ç'
46 NO UNIVERSAL METHOD TO INPUT THOSE WORKS OVER ALL SYSTEMS. You have to define **MACRO** in way specific to your OS or layout.
48 See this post for example **MACRO** code.
50 http://deskthority.net/workshop-f7/tmk-keyboard-firmware-collection-t4478-120.html#p195620
52 On **Windows** you can use `AltGr` key or **Alt code**.
53 - http://en.wikipedia.org/wiki/AltGr_key
54 - http://en.wikipedia.org/wiki/Alt_code
56 On **Mac** OS defines `Option` key combinations.
57 - http://en.wikipedia.org/wiki/Option_key#Alternative_keyboard_input
59 On **Xorg** you can use `compose` key, instead.
60 - http://en.wikipedia.org/wiki/Compose_key
62 And see this for **Unicode** input.
63 - http://en.wikipedia.org/wiki/Unicode_input
69 Apple keyboard sends keycode for Fn unlike most of other keyboards.
70 I think you can send Apple Fn key using Apple venter specific Page 0xff00 and usage 0x0003. But you have to change HID Report Descriptor for this, of course.
72 https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/AppleHIDUsageTables.h
75 ## Media control keys in Mac OSX
76 See [PR #160](https://github.com/tmk/tmk_keyboard/issues/160).
78 >The "Play/Pause"(KC_MPLY) works good on Apple OS. But "Next/Prev Track" buttons are unfunctional.
79 Apple OS use "Fast Forwad"(F9 on Apple keyboard) & "Rewind"(F7 on Apple keyboard) instead.
81 Use `KC_MFFD`(`KC_MEDIA_FAST_FORWARD`) and `KC_MRWD`(`KC_MEDIA_REWIND`) instead of KC_ and `KC_MNXT` and `KC_MPRV`.
83 https://github.com/tmk/tmk_keyboard/blob/5a8dbc63ea29eb454ad5f36de5c6c33172230f88/common/keycode.h#L141-L144
86 ## Keys supported in Mac OSX?
87 You can know which keycodes are supported in OSX from this source code.
89 `usb_2_adb_keymap` array maps Keyboard/Keypad Page usages to ADB scancodes(OSX internal keycodes).
91 https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/Cosmo_USB2ADB.c
93 And `IOHIDConsumer::dispatchConsumerEvent` handles Consumer page usages.
95 https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/IOHIDConsumer.cpp
98 ## JIS keys in Mac OSX
99 Japanese JIS keyboard specific keys like `無変換(Muhenkan)`, `変換(Henkan)`, `ひらがな(hiragana)` are not recognized on OSX. You can use **Seil** to enable those keys, try fllowing options.
101 * Enable NFER Key on PC keyboard
102 * Enable XFER Key on PC keyboard
103 * Enable KATAKANA Key on PC keyboard
105 https://pqrs.org/osx/karabiner/seil.html