-# Keymap
+## READ FIRST
+https://github.com/tmk/tmk_core/blob/master/doc/keymap.md
+
+## How to get keycode
+See [doc/keycode.txt](https://github.com/tmk/tmk_core/blob/master/doc/keycode.txt).
+Keycodes are actually defined in [common/keycode.h](https://github.com/tmk/tmk_core/blob/master/common/keycode.h).
+
+## Sysrq key
+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'.
+
+See [issue #168](https://github.com/tmk/tmk_keyboard/issues/168) and
+- http://en.wikipedia.org/wiki/Magic_SysRq_key
+- http://en.wikipedia.org/wiki/System_request
+
## Power key doesn't work
Use `KC_PWR` instead of `KC_POWER` or vice versa.
- `KC_PWR` works with Windows and Linux, not with OSX.
Modifier keys or layers can be stuck unless layer switching is configured properly.
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.
-https://github.com/tmk/tmk_keyboard/blob/master/doc/keymap.md#31-momentary-switching
-http://geekhack.org/index.php?topic=57008.msg1492604#msg1492604
+- https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#31-momentary-switching
+- http://geekhack.org/index.php?topic=57008.msg1492604#msg1492604
+- https://github.com/tmk/tmk_keyboard/issues/248
## Mechanical Lock Switch Support
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`.***
-## Input language specific charactors other than ASCII like Cédille 'Ç'
-NO UNIVERSAL METHOD TO INPUT THOSE WORKS OVER ALL SYSTEMS. You have to define MACRO in way specific to your OS or layout.
+## Input special charactors other than ASCII like Cédille 'Ç'
+NO UNIVERSAL METHOD TO INPUT THOSE WORKS OVER ALL SYSTEMS. You have to define **MACRO** in way specific to your OS or layout.
+
+See this post for example **MACRO** code.
-See this post for example code.
http://deskthority.net/workshop-f7/tmk-keyboard-firmware-collection-t4478-120.html#p195620
On **Windows** you can use `AltGr` key or **Alt code**.
- http://en.wikipedia.org/wiki/Compose_key
And see this for **Unicode** input.
-- http://en.wikipedia.org/wiki/Unicode_input
\ No newline at end of file
+- http://en.wikipedia.org/wiki/Unicode_input
+
+
+## Apple/Mac keyboard Fn
+Not supported.
+
+Apple/Mac keyboard sends keycode for Fn unlike most of other keyboards.
+I think you can send Apple Fn key using Apple venter specific Page 0xff01 and usage 0x0003. But you have to change HID Report Descriptor for this, of course.
+
+https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/AppleHIDUsageTables.h
+
+
+## Media control keys in Mac OSX
+#### KC_MNXT and KC_MPRV does not work on Mac
+Use `KC_MFFD`(`KC_MEDIA_FAST_FORWARD`) and `KC_MRWD`(`KC_MEDIA_REWIND`) instead of `KC_MNXT` and `KC_MPRV`.
+See https://github.com/tmk/tmk_keyboard/issues/195
+
+
+## Keys supported in Mac OSX?
+You can know which keycodes are supported in OSX from this source code.
+
+`usb_2_adb_keymap` array maps Keyboard/Keypad Page usages to ADB scancodes(OSX internal keycodes).
+
+https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/Cosmo_USB2ADB.c
+
+And `IOHIDConsumer::dispatchConsumerEvent` handles Consumer page usages.
+
+https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/IOHIDConsumer.cpp
+
+
+## JIS keys in Mac OSX
+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 following options.
+
+* Enable NFER Key on PC keyboard
+* Enable XFER Key on PC keyboard
+* Enable KATAKANA Key on PC keyboard
+
+https://pqrs.org/osx/karabiner/seil.html
+
+
+## RN-42 Bluetooth doesn't work with Karabiner
+Karabiner - Keymapping tool on Mac OSX - ignores inputs from RN-42 module by default. You have to enable this option to make Karabiner working with your keyboard.
+https://github.com/tekezo/Karabiner/issues/403#issuecomment-102559237
+
+See these for the deail of this problem.
+https://github.com/tmk/tmk_keyboard/issues/213
+https://github.com/tekezo/Karabiner/issues/403
+
+
+## Esc and `~ on a key
+
+
+You can define FC660 and Poker style ESC with `ACTION_LAYER_MODS`.
+https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#35-momentary-switching-with-modifiers
+
+```
+#include "keymap_common.h"
+
+
+/* Leopold FC660
+ * https://elitekeyboards.com/products.php?sub=leopold,compact&pid=fc660c
+ * Shift + Esc = ~
+ * Fn + Esc = `
+ *
+ * Votex Poker II
+ * https://adprice.fedorapeople.org/poker2_manual.pdf
+ * Fn + Esc = `
+ * Fn + Shift + Esc = ~
+ */
+const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ /* 0: qwerty */
+ [0] = KEYMAP( \
+ ESC, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, NUHS,BSPC, \
+ TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSLS, \
+ LCTL,A, S, D, F, G, H, J, K, L, SCLN,QUOT,ENT, \
+ FN0, NUBS,Z, X, C, V, B, N, M, COMM,DOT, SLSH,RSFT,ESC, \
+ LCTL,LGUI,LALT, SPC, RALT,FN1, RGUI,RCTL),
+ [1] = KEYMAP( \
+ GRV, TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,\
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
+ TRNS,TRNS,TRNS, TRNS, TRNS,TRNS,TRNS,TRNS),
+ [2] = KEYMAP( \
+ GRV, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, TRNS,TRNS, \
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,\
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
+ TRNS,TRNS,TRNS, TRNS, TRNS,TRNS,TRNS,TRNS),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+ // https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#35-momentary-switching-with-modifiers
+ [0] = ACTION_LAYER_MODS(1, MOD_LSFT),
+ [1] = ACTION_LAYER_MOMENTARY(2),
+};
+```
+
+Otherwise, you can write code, see this.
+https://github.com/p3lim/keyboard_firmware/commit/fd799c12b69a5ab5addd1d4c03380a1b8ef8e9dc
+
+
+## 32 Fn keys are not enough?
+### actionmap
+It uses 16 bit codes and has no limitation of 32 Fn at the expense of memory space. TMK keymap is actually is 8 bit codes as subset of the actionmap.
+https://github.com/tmk/tmk_keyboard/issues?utf8=%E2%9C%93&q=is%3Aissue+actionmap
+
+### extension for modified keys
+https://geekhack.org/index.php?topic=41989.msg1885526#msg1885526
+
+
+## Arrow on Right Modifier keys with Dual-Role
+This turns right modifer keys into arrow keys when the keys are tapped while still modifiers when the keys are hold. In TMK the dual-role function is dubbed **TAP**.
+```
+#include "keymap_common.h"
+
+
+/* Arrow keys on right modifier keys with TMK dual role feature
+ *
+ * https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#213-modifier-with-tap-keydual-role
+ * https://en.wikipedia.org/wiki/Modifier_key#Dual-role_keys
+ */
+const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ /* 0: qwerty */
+ [0] = KEYMAP( \
+ ESC, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, NUHS,BSPC, \
+ TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSLS, \
+ LCTL,A, S, D, F, G, H, J, K, L, SCLN,QUOT,ENT, \
+ LSFT,NUBS,Z, X, C, V, B, N, M, COMM,DOT, SLSH,FN0, ESC, \
+ FN4, LGUI,LALT, SPC, APP, FN2, FN1, FN3),
+ [1] = KEYMAP( \
+ GRV, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, TRNS,TRNS, \
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,\
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
+ TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,FN5, TRNS, \
+ TRNS,TRNS,TRNS, TRNS, TRNS,FN7, FN6, FN8),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+ [0] = ACTION_MODS_TAP_KEY(MOD_RSFT, KC_UP),
+ [1] = ACTION_MODS_TAP_KEY(MOD_RGUI, KC_DOWN),
+ [2] = ACTION_MODS_TAP_KEY(MOD_RALT, KC_LEFT),
+ [3] = ACTION_MODS_TAP_KEY(MOD_RCTL, KC_RIGHT),
+ [4] = ACTION_LAYER_MOMENTARY(1),
+ [5] = ACTION_MODS_TAP_KEY(MOD_RSFT, KC_PGUP),
+ [6] = ACTION_MODS_TAP_KEY(MOD_RGUI, KC_PGDN),
+ [7] = ACTION_MODS_TAP_KEY(MOD_RALT, KC_HOME),
+ [8] = ACTION_MODS_TAP_KEY(MOD_RCTL, KC_END),
+};
+
+```
+
+
+Dual-role key: https://en.wikipedia.org/wiki/Modifier_key#Dual-role_keys
+
+
+## Eject on Mac OSX
+`EJCT` keycode works on OSX. https://github.com/tmk/tmk_keyboard/issues/250
+It seems Windows 10 ignores the code and Linux/Xorg recognizes but has no mapping by default.
+
+Not sure what keycode Eject is on genuine Apple keyboard actually. HHKB uses `F20` for Eject key(`Fn+f`) on Mac mode but this is not same as Apple Eject keycode probably.
+
+
+
+## What's weak_mods and real_mods in action_util.c
+___TO BE IMPROVED___
+
+real_mods is intended to retains state of real/physical modifier key state, while
+weak_mods retains state of virtual or temprary modifiers which should not affect state real modifier key.
+
+Let's say you hold down physical left shift key and type ACTION_MODS_KEY(LSHIFT, KC_A),
+
+with weak_mods,
+* (1) hold down left shift: real_mods |= MOD_BIT(LSHIFT)
+* (2) press ACTION_MODS_KEY(LSHIFT, KC_A): weak_mods |= MOD_BIT(LSHIFT)
+* (3) release ACTION_MODS_KEY(LSHIFT, KC_A): waek_mods &= ~MOD_BIT(LSHIFT)
+real_mods still keeps modifier state.
+
+without weak mods,
+* (1) hold down left shift: real_mods |= MOD_BIT(LSHIFT)
+* (2) press ACTION_MODS_KEY(LSHIFT, KC_A): real_mods |= MOD_BIT(LSHIFT)
+* (3) release ACTION_MODS_KEY(LSHIFT, KC_A): real_mods &= ~MOD_BIT(LSHIFT)
+here real_mods lost state for 'physical left shift'.
+
+weak_mods is ORed with real_mods when keyboard report is sent.
+https://github.com/tmk/tmk_core/blob/master/common/action_util.c#L57
projects / qmk_firmware.git / blobdiff