[Keymap] Feature/preonic/rev3/alfrdmalr (#7870)

* WIP do not merge

* first pass at custom preonic layout

* add auto shift and reset via leader key

* Update readme

* update copyright notice

* formatting changes

* fix: use MO instead of process_record_user

* added backslash and moved grave position

* remove extraneous 'j' characer in NUMPAD template

* update template formatting

* remove process_record_user

* swap "!" with "@"

* fix readme formatting

* update readme layout image

4 files changed, 315 insertions, 0 deletions

diff --git a/keyboards/preonic/keymaps/alfrdmalr/config.h b/keyboards/preonic/keymaps/alfrdmalr/config.h
new file mode 100644
index 000000000..d906664c9
--- /dev/null
+++ b/keyboards/preonic/keymaps/alfrdmalr/config.h
@@ -0,0 +1,40 @@
+#pragma once
+
+#ifdef AUDIO_ENABLE
+    #define STARTUP_SONG SONG(PREONIC_SOUND)
+    // #define STARTUP_SONG SONG(NO_SOUND)
+
+    #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                  SONG(COLEMAK_SOUND), \
+                                  SONG(DVORAK_SOUND) \
+                                }
+#endif
+
+#define MUSIC_MASK (keycode != KC_NO)
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+#define LEADER_TIMEOUT 400
+#define LEADER_PER_KEY_TIMING
diff --git a/keyboards/preonic/keymaps/alfrdmalr/keymap.c b/keyboards/preonic/keymaps/alfrdmalr/keymap.c
new file mode 100644
index 000000000..c2a682d4a
--- /dev/null
+++ b/keyboards/preonic/keymaps/alfrdmalr/keymap.c
@@ -0,0 +1,192 @@
+/* Copyright 2015-2017 Jack Humbert 2019-2020 Alfred Maler
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include QMK_KEYBOARD_H
+#include "muse.h"
+
+enum preonic_layers {
+  _QWERTY,
+  _SETTINGS,
+  _SYMBOLS,
+  _NAVIGATION,
+  _NUMPAD,
+};
+
+enum preonic_keycodes {
+  QWERTY = SAFE_RANGE,
+  SYMBOLS,
+  NAVIGATION,
+  NUMPAD,
+  SETTINGS
+};
+
+#define NUMSPACE LT(_NUMPAD, KC_SPC)
+#define NAVLAYER MO(_NAVIGATION)
+#define SYMLAYER MO(_SYMBOLS)
+#define CTRLSHFT C(KC_LSFT)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TAB  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | DEL  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | NAV  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | SHFT |   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  | SHFT |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | CTRL | C/S  | LGUI | LALT | SYMB |  SPACE/NUM  | SYMB | RALT | SETT | MUTG | LEAD |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = LAYOUT_preonic_grid(
+  KC_GRV,      KC_1,     KC_2,    KC_3,    KC_4,     KC_5,     KC_6,     KC_7,     KC_8,    KC_9,     KC_0,    KC_BSPC, 
+  KC_TAB,      KC_Q,     KC_W,    KC_E,    KC_R,     KC_T,     KC_Y,     KC_U,     KC_I,    KC_O,     KC_P,    KC_DEL,  
+  NAVLAYER,    KC_A,     KC_S,    KC_D,    KC_F,     KC_G,     KC_H,     KC_J,     KC_K,    KC_L,     KC_SCLN, KC_QUOT, 
+  KC_LSFT,     KC_Z,     KC_X,    KC_C,    KC_V,     KC_B,     KC_N,     KC_M,     KC_COMM, KC_DOT,   KC_SLSH, KC_RSFT, 
+  KC_LCTL,     CTRLSHFT, KC_LGUI, KC_LALT, SYMLAYER, NUMSPACE, NUMSPACE, SYMLAYER, KC_RALT, SETTINGS, MU_TOG,  KC_LEAD
+),
+
+/* SYMBOLS
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TAB  |   #  |   $  |   {  |   }  |      |      |   ^  |   *  |   |  |   ~  | DEL  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | ESC  |   <  |   >  |   (  |   )  |      |      |   -  |   +  |   &  |   \  |   `  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | SHFT |   !  |   @  |   [  |   ]  |      |      |   _  |   =  |   %  |   /  | SHFT |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS | TRNS | TRNS | TRNS | TRNS |    TRNS     | TRNS | TRNS | TRNS | TRNS | TRNS |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_SYMBOLS] = LAYOUT_preonic_grid(
+  KC_GRV,  KC_1,       KC_2,       KC_3,       KC_4,       KC_5,     KC_6,     KC_7,       KC_8,     KC_9,     KC_0,    KC_BSPC,
+  KC_TAB,  KC_HASH,    KC_DOLLAR,  KC_LCBR,    KC_RCBR,    KC_NO,    KC_NO,    KC_CIRC,    KC_ASTR,  KC_PIPE,  KC_TILD, KC_DEL, 
+  KC_NO,   KC_LABK,    KC_RABK,    KC_LPRN,    KC_RPRN,    KC_NO,    KC_NO,    KC_MINS,    KC_PLUS,  KC_AMPR,  KC_BSLS, KC_GRV, 
+  KC_LSFT, KC_EXCLAIM, KC_AT,      KC_LBRC,    KC_RBRC,    KC_NO,    KC_NO,    KC_UNDS,    KC_EQL,   KC_PERC,  KC_SLSH, KC_RSFT,
+  KC_TRNS, KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,    KC_TRNS,  KC_TRNS,  KC_TRNS,    KC_TRNS,  KC_TRNS,  KC_TRNS, KC_TRNS 
+),
+
+/* NAVIGATION
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS |      |      | SPC  |  F5  |      | INS  | HOME | END  | TAB  |      | DEL  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | NAV  | SHFT | CTRl | ALT  | GUI  |      | LEFT | DOWN | UP   | RGHT |      | ENTR |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | SHFT | UNDO | CUT  | COPY | PSTE |      | SPC  | PGDO | PGUP |      |      | SHFT |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS | TRNS | TRNS | TRNS | TRNS |     ESC     | TRNS | TRNS | TRNS | TRNS | TRNS |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_NAVIGATION] = LAYOUT_preonic_grid(
+  KC_GRV,  KC_1,    KC_2,     KC_3,    KC_4,     KC_5,    KC_6,    KC_7,    KC_8,    KC_9,      KC_0,    KC_BSPC, 
+  KC_TRNS, KC_NO,   KC_NO,    KC_SPC,  KC_F5,    KC_NO,   KC_INS,  KC_HOME, KC_END,  KC_TAB,    KC_NO,   KC_DEL,  
+  KC_TRNS, KC_LSFT, KC_LCTRL, KC_LALT, KC_LGUI,  KC_NO,   KC_LEFT, KC_DOWN, KC_UP,   KC_RIGHT,  KC_NO,   KC_ENT, 
+  KC_TRNS, C(KC_Z), C(KC_X),  C(KC_C), C(KC_V),  KC_NO,   KC_SPC,  KC_PGDN, KC_PGUP, KC_NO,     KC_NO,   KC_TRNS,
+  KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS,  KC_ESC,  KC_ESC,  KC_TRNS, KC_TRNS, KC_TRNS,   KC_TRNS, KC_TRNS 
+),
+
+/* NUMPAD
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS |  F9  |  F10 |  F11 |  F12 |      |      |   7  |   8  |   9  |   -  | DEL  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | ESC  |  F5  |  F6  |  F7  |  F8  | SPC  | SPC  |   4  |   5  |   6  |   +  | ENTR |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS |  F1  |  F2  |  F3  |  F4  | ALT  | CAPS |   1  |   2  |   3  |   /  | TRNS |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS | TRNS | TRNS | TRNS | TRNS |    TRNS     |   0  |   ,  |   .  |   *  | TRNS |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_NUMPAD] = LAYOUT_preonic_grid( 
+  KC_GRV,  KC_1,    KC_2,     KC_3,    KC_4,    KC_5,    KC_6,     KC_7,    KC_8,    KC_9,     KC_0,     KC_BSPC,
+  KC_TAB,  KC_F9,   KC_F10,   KC_F11,  KC_F12,  KC_NO,   KC_NO,    KC_7,    KC_8,    KC_9,     KC_MINS,  KC_DEL, 
+  KC_ESC,  KC_F5,   KC_F6,    KC_F7,   KC_F8,   KC_SPC,  KC_SPC,   KC_4,    KC_5,    KC_6,     KC_PLUS,  KC_ENT, 
+  KC_LSFT, KC_F1,   KC_F2,    KC_F3,   KC_F4,   KC_LALT, KC_CAPS,  KC_1,    KC_2,    KC_3,     KC_SLSH,  KC_TRNS,
+  KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,  KC_0, KC_COMM,    KC_DOT,   KC_ASTR,  KC_TRNS 
+),
+
+/* SETTINGS
+ * ,-----------------------------------------------------------------------------------.
+ * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |  Del |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|AudOff|AGnorm|AGswap|Qwerty|      |      |      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | ASTG |Voice-|Voice+|Mus on|MusOff|MidiOn|MidOff|      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_SETTINGS] = LAYOUT_preonic_grid( 
+  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  
+  _______, _______,   DEBUG,   _______, _______, _______, _______, TERM_ON, TERM_OFF,_______, _______, KC_DEL,
+  _______, _______, MU_MOD,  AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  _______, _______,  _______, _______,
+  KC_ASTG, MUV_DE,  MUV_IN,  MU_ON,   MU_OFF,  MI_ON,   MI_OFF,  _______, _______, _______, _______, _______, 
+  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______  
+)
+};
+
+
+bool muse_mode = false;
+uint8_t last_muse_note = 0;
+uint16_t muse_counter = 0;
+uint8_t muse_offset = 70;
+uint16_t muse_tempo = 50;
+
+LEADER_EXTERNS();
+
+void matrix_scan_user(void) {
+#ifdef AUDIO_ENABLE
+    if (muse_mode) {
+        if (muse_counter == 0) {
+            uint8_t muse_note = muse_offset + SCALE[muse_clock_pulse()];
+            if (muse_note != last_muse_note) {
+                stop_note(compute_freq_for_midi_note(last_muse_note));
+                play_note(compute_freq_for_midi_note(muse_note), 0xF);
+                last_muse_note = muse_note;
+            }
+        }
+        muse_counter = (muse_counter + 1) % muse_tempo;
+    } else {
+        if (muse_counter) {
+            stop_all_notes();
+            muse_counter = 0;
+        }
+    }
+#endif
+
+  LEADER_DICTIONARY() {
+    leading = false;
+    SEQ_FIVE_KEYS(KC_R, KC_E, KC_S, KC_E, KC_T) {
+      reset_keyboard();
+    }
+    leader_end(); 
+  }
+}
+
+bool music_mask_user(uint16_t keycode) {
+  switch (keycode) {
+    default:
+      return true;
+  }
+}
\ No newline at end of file
diff --git a/keyboards/preonic/keymaps/alfrdmalr/readme.md b/keyboards/preonic/keymaps/alfrdmalr/readme.md
new file mode 100644
index 000000000..13c5d711c
--- /dev/null
+++ b/keyboards/preonic/keymaps/alfrdmalr/readme.md
@@ -0,0 +1,80 @@
+# alfrdmalr's preonic layout
+## Overview 
+The alphanumeric characters and symbols are spread between three main 'typing' layers: QWERTY, NUMPAD, and SYMBOLS. The NUMPAD layer also holds the first twelve function keys.
+
+A fourth layer, NAVIGATION, contains useful modifiers, shortcuts, and navigation functions like the arrow keys and page up/down. This layer also provides access to the ENTER and ESC keys. 
+
+Finally, a SETTINGS layer can be used to adjust certain keyboard-related options. Right now, this is pretty similar to the default settings layer (the planck's ADJUST layer). Primary differences are the inclusion of an autoshift toggle and the removal of the reset button. The bootloader functionality has been moved to a leader key sequence: LEAD - R - E - S - E - T. 
+
+```
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Del  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | NAV  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | SHFT |   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  | SHFT |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | CTRL | C/S  | LGUI | LALT | SYMB |  SPACE/NUM  | SYMB | RALT | SETT |mu tog| LEAD |
+ * `-----------------------------------------------------------------------------------'
+ */
+ 
+ /* SYMBOLS
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Tab  |   #  |   $  |   {  |   }  |      |      |   ^  |   *  |   |  |   ~  | Del  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Esc  |   <  |   >  |   (  |   )  |      |      |   -  |   +  |   &  |   `  | ENTR |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | SHFT |   !  |   @  |   [  |   ]  |      |      |   _  |   =  |   %  |   /  | SHFT |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS | TRNS | TRNS | TRNS | TRNS |    TRNS     | TRNS | TRNS | TRNS | TRNS | TRNS |
+ * `-----------------------------------------------------------------------------------'
+ */
+ 
+ /* NUMPAD
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS |  F9  |  F10 |  F11 |  F12 |      |      |   7  |   8  |   9  |   -  | DEL  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | ESC  |  F5  |  F6  |  F7  |  F8  | SPC  | SPC  |   4  |   5  |   6  |   +  | ENTR |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS |  F1  |  F2  |  F3  |  F4  | ALT  | CAPS |   1  |   2  |   3  |   /  | TRNS |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS | TRNS | TRNS | TRNS | TRNS |    TRNS     |   0  |   ,  |   .  |   *  | TRNS |
+ * `-----------------------------------------------------------------------------------'
+ */
+ 
+ /* NAVIGATION
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS |      |      | SPC  |  F5  |      | INS  | HOME | END  | TAB  |      | Del  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | NAV  | SHIFT| CTRl | ALT  | GUI  |      | LEFT | DOWN | UP   | RIGHT|      | ENTR |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | SHFT | UNDO | CUT  | COPY | PASTE|      | SPC  | PGDO | PGUP |      |      | SHFT |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | TRNS | TRNS | TRNS | TRNS | TRNS |     ESC     | TRNS | TRNS | TRNS | TRNS | TRNS |
+ * `-----------------------------------------------------------------------------------'
+ */
+ 
+ /* SETTINGS
+ * ,-----------------------------------------------------------------------------------.
+ * |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |      |      |      |  Del |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|AudOff|AGnorm|AGswap|Qwerty|      |      |      |      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | ASTG |Voice-|Voice+|Mus on|MusOff|MidiOn|MidOff|      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+ ```
+ ASTG = autoshift toggle
diff --git a/keyboards/preonic/keymaps/alfrdmalr/rules.mk b/keyboards/preonic/keymaps/alfrdmalr/rules.mk
new file mode 100644
index 000000000..291bb16fa
--- /dev/null
+++ b/keyboards/preonic/keymaps/alfrdmalr/rules.mk
@@ -0,0 +1,3 @@
+SRC += muse.c
+AUTO_SHIFT_ENABLE = yes
+LEADER_ENABLE = yes