levinson-keymapping-qmk

#include QMK_KEYBOARD_H

enum layer_names {
    _QWERTY,
    _LOWER,
    _RAISE,
    _FUNCTION,
    _ADJUST,
};

enum planck_keycodes {
  LOWER = SAFE_RANGE,
  RAISE
};

// Defines for task manager and such
#define CALTDEL LCTL(LALT(KC_DEL))
#define TSKMGR LCTL(LSFT(KC_ESC))

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

/* Qwerty
 * ,-----------------------------------------------------------------------------------.
 * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * | Func |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  | Enter|
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |  '   |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * | Ctrl |  `   | GUI  | Alt  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
 * `-----------------------------------------------------------------------------------'
 */
[_QWERTY] = LAYOUT_ortho_4x12(
  KC_ESC, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_EQL, 
  KC_TAB, 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_UP, KC_ENT, 
  KC_LCTL, KC_LALT, KC_LGUI, KC_RSFT, KC_DEL, LOWER, KC_SPC, KC_BSPC, RAISE, KC_LEFT, KC_DOWN, KC_RGHT
),

/* Lower
 * ,-----------------------------------------------------------------------------------.
 * | Esc  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Del  |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * |      |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |Enter |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |      |      | Mute |      |  |   |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |Lower | Bksp | Bksp |Raise | Next | Vol- | Vol+ | Play |
 * `-----------------------------------------------------------------------------------'
 */
[_LOWER] = LAYOUT_ortho_4x12(
  KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, \
  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_LBRC, KC_RBRC, KC_BSLS, \
  KC_TRNS, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_DOT, KC_SLSH, KC_END, \
  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_MPLY, KC_MPRV, KC_MNXT
),

/* Raise
 * ,-----------------------------------------------------------------------------------.
 * | Esc  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Del  |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * |      |   4  |   5  |   6  |   +  |  F5  |  F6  |   -  |   =  |   [  |   ]  |Enter |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * |Enter |   7  |   8  |   9  |   -  |  F11 |  F12 |ISO # |ISO / | Mute |      |   \  |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |   ,  |   0  |  .   |Lower | Bksp | Bksp |Raise | Next | Vol- | Vol+ | Play |
 * `-----------------------------------------------------------------------------------'
 */
[_RAISE] = LAYOUT_ortho_4x12(
  KC_TILD, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_MINS, \
  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_LCBR, KC_RCBR, KC_PGUP, \
  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_UP, KC_PGDN, \
  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_LEFT, KC_VOLD, KC_VOLU
),

/* Adjust (Lower + Raise)
 * ,-----------------------------------------------------------------------------------.
 * |Taskmg|      |      |      |      |      |      |      |      |      |      |caltde|
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|      |      |      |      |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * |      |Voice-|Voice+|Mus on|Musoff|MIDIon|MIDIof|      |      |      |      |      |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |      |      |      |      |      |      | RESET|
 * `-----------------------------------------------------------------------------------'
 */
[_ADJUST] = LAYOUT_ortho_4x12(
  TSKMGR,  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, CALTDEL,
  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, _______, _______, _______, _______, _______,
  _______,  MUV_DE, MUV_IN,  MU_ON,   MU_OFF,  MI_ON,   MI_OFF,  _______, _______, _______, _______, _______,
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, RESET
),

/* Function
 * ,-----------------------------------------------------------------------------------.
 * |      |      |      |      |      |      |      |      |  Up  |      |      |      |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * |      |      |      |      |      |      |      | Left | Down |Right |      |      |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * | Caps |      |      |      |      |      |      |      |      |      |      |      |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |      |      |      |      |      |      |
 * `-----------------------------------------------------------------------------------'
 */
[_FUNCTION] = LAYOUT_ortho_4x12(
  _______, _______, _______, _______, _______, _______, _______, _______, KC_UP,   _______, _______, _______,
  _______, _______, _______, _______, _______, _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______,
  KC_CAPS, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
)

};


bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  switch (keycode) {
    case LOWER:
      if (record->event.pressed) {
        layer_on(_LOWER);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      } else {
        layer_off(_LOWER);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      }
      return false;
      break;
    case RAISE:
      if (record->event.pressed) {
        layer_on(_RAISE);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      } else {
        layer_off(_RAISE);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      }
      return false;
      break;
  }
  return true;
}