Mugur is a keyboard configurator for QMK
compatible keyboards. mugur-mugur takes a list of all the layers and keys and
generates the equivalent QMK C code, ready to be flashed on the keyboard.
Supported features: all the basic QMK keycodes, mod-tap, modifiers, one-shot keys, layer toggle, macros, tap dance, leader key and combos. If an Emacs function has a keybinding, it can be specified as a key.
- Mugur
- How it works
- Features and keycodes
- Configuration
- Supported Keyboards
- Other points
- Full Examples
(Table of contents generated with markdown-toc)
Given a list of all the layers and keys, mugur-mugur generates the equivalent
C code for the qmk_firmware, ready to be built and flashed on the keyboard.
(mugur-mugur
'(("base" a b c (LT numbers d))
("numbers" 1 2 3 "one two three")))This is a two-layers layout for a keyboard with four keys. The "base" layer has the letters 'a', 'b' and 'c' and a layer-toggle key that activates the "numbers" layer when held and sends the letter 'd' when tapped. On the "numbers" layer there are the 1, 2 and 3 digits, as expected, and then a macro key that sends "one two three" when pressed.
There are other possibilities, qmk features and configurations to try, but that is the basics of it. See the examples section for more rich mugur layouts.
mugur-key is just a term I've invented for any of the symbols, characters, strings or lists that can appear in a mugur-keymap. In the above example, both 'a' and "one two three" are valid mugur-keys.
Mugur supports all the basic qmk keycodes. Their mugur-key equivalent is either a symbol, a digit, a character or a string.
The mugur-keys are case sensitive, c and C being different mugur-keys, one for the letter 'c', the other for the Ctrl modifier. Below is the list of all modifiers plus some additional examples.
| mugur-key | qmk-keycode | comment |
|---|---|---|
| C | KC_LCTL | the C (or Ctrl) modifier |
| M | KC_LALT | the M (or Meta) modifier |
| G | KC_LGUI | the G (or Super) modifier |
| S | KC_LSFT | the S (or Shift) modifier |
| c | KC_C | the letter c, given as a symbol |
| "x" | KC_X | the letter x, given as a string |
| ?+ | KC_PLUS | the plus sign, given as a character |
| f12 | KC_F12 | the function key F12 |
| 9 | KC_9 | the digit 9 |
| xx | nil | Invalid key, results in error |
For every mugur-key there is either a direct correspondence with a qmk-keycode
or with a qmk functionality (like a macro, for example). For a list of all these
basic codes that one can use in the layout, consult the mugur-symbol function
as defined in mugur.el. For the special keys, like macros, one-shot and the
rest, see below.
When pressed, the modifier is active, when tapped the key is sent.
| mugur-key | example comment |
|---|---|
| (C x) | Ctrl modifier when held, send x when tappend |
| (S x) | Hold Shift when held, send x when tapped |
| (C M x) | C+M modifier when held, send x when tapped |
| (C M) | Invalid, two modifiers given |
| (C a b) | Invalid, more than one key given |
Allows key combinations like the familiar emacs's M-x, that is, hold down the Meta modifier and press x.
| mugur-key | example comment |
|---|---|
| M-x | Send x with Meta held down |
| C-M-x | Send x with both Ctrl and Meta held down |
| C-M-yes | Invalid keycode, results in error |
One shot keys are keys that remain active until the next key is pressed, and then are released (qmk documentation)
| mugur-key | example comment |
|---|---|
| (OSM S) | One Shot Mod - the next key will be pressed with Shift active |
| (OSL mylayer) | One Shot Layer - the next key will be from this layer |
Switching and toggling layers.
| mugur-key | example comment |
|---|---|
| (DF numbers) | switch to 'numbers' layer |
| (MO numbers) | momentarily activates the 'numbers' layer (as long as the key is kept pressed) |
| (LM numbers C) | momentarily activates the 'numbers' layer but with the C modifier active |
| (LT numbers x) | momentarily activates the 'numbers' layer when held and sends x when tapped |
| (OSL numbers) | momentarily activates the 'numbers' layer until the next key is pressed |
| (TG numbers) | toggle the numbers layer, activating it if its inactive and vice-versa |
| (TO numbers) | activates the numbers layer and deactivates all the other layers, besides the default layer |
| (TT numbers) | layer tap-toggle |
Send any key combination that does not qualify as anything else.
| mugur-key | example comment |
|---|---|
| "this is mugur!" | send the specified string when key is tapped |
| (C-x d) | send x with C modifier pressed and then send d. (the Emacs dired command) |
| (C-M-u "my pass" enter) | send u with both C and M modifier pressed, send "my pass" and press enter |
| ">" | this is not a macro since it has a basic qmk-keycode to which it is transformed |
| "λ" | but this one is a macro, and this key will insert the beloved lambda |
| (C-x dd) | invalid, since dd is not a valid mugur-key. Results in error |
Hit a key once, send a key. Hit it twice in quick succession, send a different
one. The tap dance functionality is only valid for two basic mugur-keycodes
(letter, digits, punctuation, commands, etc), and not for layers nor
macros. mugur-tapdance-enable must be set to "yes" for this to work, otherwise
look out for error: implicit declaration of function ‘ACTION_TAP_DANCE_DOUBLE’
when building.
| mugur-key | example comment |
|---|---|
| (DANCE a x) | Send a when hitting the key once, send x when hit twice, in quick succession. |
| (DANCE ?: ?;) | Send ; when hitting the key once, send ; when hit twice, in quick succession |
| (DANCE a "this") | Invalid, mugur only supports basic mugur-keycodes, not macros, nor layers, etc. |
| (DANCE a b c) | Invalid, can't do more than two things. |
Tap the Leader Key and then up to five keys in quick succession, before the
LEADER_TIMEOUT expires, and send whatever macro you like. Use the
mugur-leader-keys to setup what keys do what,
(setf mugur-leader-keys
'(((s d f) "s, d and then f")
((z) (M-x "kill"))))In the above example, tapping the Leader Key, followed by s, d and then f
will send the given string. The mugur-key after the first list, must be a valid
macro. The Leader Key is the mugur-key named lead and can appear
anywhere on your keymap.
Hit two keys at once and send a different key. Set mugur-combo-keys to setup
what key combinations do what,
(setf mugur-combo-keys
'(((a b) x)
((1 2) ?\.)))In this example, pressing both a and b at the same time would send
x. Pressing 1 and 2 would send the symbol .. Adjust the
mugur-combo-term delay for the perfect experience.
For Emacs functions that have a keybinding, the function name can be directly specified as a mugur-key.
| mugur-keycode | example comment |
|---|---|
| query-replace | the usual keybinding for this is M-%, so this is equivalent with the M-% mugur-key |
| insert-char | Becomes the mugur-key '(C-x 8 RET), which, in turn, is a macro that send those keys |
For long or often-used mugur-key sequences, or simply as a mnemonic, the
mugur-user-defined-keys contains a list of items, where the car of the item is
the mnemonic and the cadr is any valid mugur-key.
(setf mugur-user-define-keys
'((uname "my_badass_username")
(weird_key (C-c a "right?" ENT))))
All code generated by mugur is found between START-MUGUR-REGION and
END-MUGUR-REGION comment. For keyboard-specific code, for exploring different
configurations by hand or for features not yet or ever to be provided by mugur, you
can write your own C code or makefile options outside these mugur regions,
this is my own code
// START-MUGUR-REGION
This is code generated by mugur, in keymap.c, rules.mk or config.h files.
The code between these regions is replaced on subsequent mugur-mugur calls.
// END-MUGUR-REGION
I can do whatever I want in my own region of code,
and mugur won't touch it
mugur-qmk-path nil
Path to the qmk firmware source code (root folder).
mugur-keyboard-name nil
The name of your qmk keyboard."
mugur-layout-name nil
The keymap name used in the keymaps matrix.
Check the 'uint16_t keymaps' matrix in the default keymap.c of
your keyboard. Some have just "LAYOUT", others
"LAYOUT_ergodox", etc. Adapt accordingly.
mugur-keymap-name nil
The name of qmk keymap generated by mugur.
mugur-tapping-term 180
Tapping term, in ms.
This is the maximum time allowed between taps of your Tap Dance
mugur-key.
mugur-combo-term 300
Combo term, in ms.
This is the maximum time allowed between two keypresses in which
they might be considered as Combos.
mugur-leader-timeout 300
Timeout for the Leader Key, in ms.
This is the time to wait to complete the Leader Key sequence
after you press the Leader Key key.
mugur-leader-per-key-timing nil
Enable or disable LEADER_PER_KEY_TIMING option.
If enabled, the Leader Key timeout is reset after each key is
tapped.
mugur-leader-keys nil
List of Leader Keys and their expansion.
The items are lists, where the car is a list of valid mugur-keys
and the cadr is a valid mugur-macro.
mugur-combo-keys nil
List of Combo Keys and their expansion.
The items are lists, where the car is a list of two valid
mugur-keys and the cadr is a valid mugur-key.
mugur-user-defined-keys nil
User defined keys for long or often used combinations.
A list of lists, where the car of each entry is a symbol (a name
for the new key) and the cadr is any valid mugur-key.
mugur-ignore-key '-x-
The symbol used in the mugur-keymap for an ignored key.
This is transformed into the qmk-keycode KC_NO.
mugur-transparent-key '---
The symbol used in the mugur keymap for a transparent key.
This is transformed into the qmk-keycode KC_TRANSPARENT.
Any keyboard that uses the QMK firmware. Users have reported success using mugur for the following keyboards,
| QMK Keyboard | Comments |
|---|---|
| Corne | - |
| Ergodox EZ | - |
| Moonlander | - |
Send me an email if you've used mugur for other keyboards successfully. If you have problems with a particular keyboard, open an issue with the keyboard name and the particular problem you're facing.
- Not all qmk features are supported, nor there is a plan to support them all.
- The layout structure that mugur accepts is the layout that qmk keymap.c is using for your particular keyboard (check the qmk_firmware sourcecode). There is a one-to-one correspondence to what is defined in a mugur-layout and what you see in the qmk-layout. In short, no vertical or horizontal reordering of the keys is supported nor planned to.
- There is no support to define which LEDs to turn on/off for which mugur-layer, nor there is a plan to support such a feature.
- The mugur package generates the qmk-layout, but does not build nor flashes it on your keyboard. The layout name and location is based on the values of the custom variables given by the user (see the configuration section). Consult the qmk documentation and your keyboard README for how to build and flash your keyboard.
This is a full example for a mugur configuration of an Ergodox keyboard.
(let ((mugur-qmk-path "/home/mihai/projects/qmk_firmware")
(mugur-keyboard-name "ergodox_ez")
(mugur-layout-name "LAYOUT_ergodox")
(mugur-keymap-name "mugur_test")
(mugur-tapping-term 175)
(mugur-user-defined-keys '((email "[email protected]")
(replay (C-x e)))))
(mugur-mugur
'(("base"
C-f1 vol-down vol-up -x- -x- -x- reset
-x- (C-x k) w e r t replay
-x- a (G s) (M d) (C f) g
(OSM S) z x c v b email
-x- -x- -x- -x- tab
tab -x-
-x-
bspace space -x-
-x- -x- -x- -x- -x- -x- -x-
-x- y u (LT NUM i) o -x- -x-
h (C j) (M k) (G l) p -x-
-x- n m comma dot q (OSM S)
-x- up down left right
-x- -x-
(C-x b)
(LT media escape) (LT movement ent) (LT symbols pscreen))
("num"
--- --- --- --- --- --- ---
--- --- 1 2 3 --- ---
--- 0 4 5 6 ---
--- 0 7 8 9 --- ---
--- --- --- --- ---
--- ---
---
--- --- ---
--- --- --- --- --- --- ---
--- --- --- --- --- --- ---
--- --- --- --- --- ---
--- --- --- --- --- --- ---
--- --- --- --- ---
--- ---
---
--- --- ---)
("movement"
--- --- --- --- --- --- ---
--- --- (C-u C-space) up S-insert M-< ---
--- C-a left down right C-e
--- undo --- --- --- M-> ---
--- --- --- --- ---
--- ---
---
delete C-tab ---
--- --- --- --- --- --- ---
--- --- --- sp-backward-up-sexp --- --- ---
--- sp-backward-sexp --- sp-forward-sexp --- ---
--- --- --- --- --- --- ---
--- --- --- --- ---
--- ---
---
--- --- ---)
("symbols"
--- --- ?\[ ?\] ?\{ ?\} ---
--- ?\~ --- ?\' ?\" ?\` ---
--- ?\; ?\: ?\- ?\( ?\)
--- ?\/ ?\\ ?\= ?\+ ?\_ ---
--- --- ?\| ?\< ?\>
--- ---
---
?\! ?\? ---
--- --- --- --- --- --- ---
--- --- --- --- --- --- ---
--- --- --- --- --- ---
--- --- --- --- --- --- ---
--- --- --- --- ---
--- ---
---
--- --- ---)
("media"
--- --- --- --- --- --- ---
rgb_sad rgb_sai --- ms_up ms_wh_up --- ---
rgb_vad rgb_vai ms_left ms_down ms_right ---
rgb_hud rgb_hui --- --- ms_wh_down --- ---
rgb_tog --- --- --- ---
--- ---
---
ms_btn2 ms_btn1 ms_btn3
--- --- --- --- --- --- ---
--- --- --- --- --- --- ---
--- --- --- --- --- ---
--- --- --- --- --- --- ---
--- --- --- --- ---
--- ---
---
--- --- ---))))Full example for a mugur configuration of a corne keyboard kindly provided by Nik Gaffney. See details on his crbkd github page.
(let ((mugur-qmk-path "~/qmk_firmware")
(mugur-keyboard-name "crkbd")
(mugur-layout-name "LAYOUT_split_3x6_3")
(mugur-keymap-name "zzkt4")
(mugur-tapping-term 175))
(mugur-mugur
'(("base"
tab q w e r t y u i o p bspace
C a s d f g h j k l ?\; (LT move ?\')
S z x c v b n m ?\, dot ?\? (MO qmik)
(MO emacs) lapo (G space) ent rapc (TG numeric))
("numeric"
~ ?\! ?\@ ?\# ?\$ ?\% ?\^ ?\& ?\* - = bspace
0 1 2 3 4 5 6 7 8 9 0 (LT move ent)
S --- ?\< ?\{ ?\[ ?\( ?\) ?\] ?\} ?\> | (MO emacs)
(TG qmik) C-M --- --- S (TG numeric))
("move"
--- M-v up --- --- --- --- --- --- --- --- ---
C-a left down right C-e --- --- --- --- --- --- ---
--- M-< C-v M-> --- --- --- --- --- --- --- ---
--- --- --- --- --- --- )
("emacs"
esc --- --- (C-x 0) (C-x 2) (C-x 3) (C-x 4 t) --- --- --- --- ---
--- --- M-% --- --- (M-x "gtd" ent) (C-x b) --- --- "λ" --- ---
reset --- M-x C-c --- ?\( ?\) (M-x "magit" ent) --- --- --- ---
--- --- (H-i e) (C-x 8) --- (MO hypm))
("hypm"
--- --- --- --- --- --- --- --- H-i (H-i o) (H-i l) ---
--- --- --- H-d --- --- --- --- --- --- --- ---
--- --- --- --- --- --- --- H-m (H-m s) --- --- ---
--- --- --- --- --- --- )
("qmik"
--- rgb_tog rgb_mod --- --- --- --- --- --- --- --- reset
rgb_sad rgb_vad rgb_hud --- --- --- --- --- --- --- --- ---
rgb_sai rgb_vai rgb_hui --- --- --- --- --- --- --- S ---
--- --- --- --- --- --- )
)))