qmk_firmware/keyboards/lets_split/keymaps/DE_simple/keymap.c

#include QMK_KEYBOARD_H
#include "keymap_german.h"

extern keymap_config_t keymap_config;

// Each layer gets a name for readability, which is then used in the keymap matrix below.
// The underscores don't mean anything - you can have a layer called STUFF or any other name.
// Layer names don't all need to be of the same length, obviously, and you can also skip them
// entirely and just use numbers.
#define _QWERTZ 0
#define _LOWER 3
#define _RAISE 4
#define _ADJUST 16

enum custom_keycodes {
  QWERTZ = SAFE_RANGE,
  LOWER,
  RAISE,
  ADJUST,
};

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

/* Qwertz
 * ,-----------------------------------------------------------------------------------.
 * | Esc  |   Q  |   W  |   E  |   R  |   T  |   Z  |   U  |   I  |   O  |   P  | Bksp |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * | Tab  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   +  |  #   |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * | Shift|   Y  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   -  |Enter |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * | Ctrl | Alt  | AltGr| GUI  |Lower |Space |Space |Raise | Left | Down |  Up  |Right |
 * `-----------------------------------------------------------------------------------'
 */
[_QWERTZ] = LAYOUT( \
  KC_ESC,  DE_Q,    DE_W,    DE_E,    DE_R,    DE_T,    DE_Z,    DE_U,    DE_I,    DE_O,    DE_P,    KC_BSPC, \
  KC_TAB,  DE_A,    DE_S,    DE_D,    DE_F,    DE_G,    DE_H,    DE_J,    DE_K,    DE_L,    DE_PLUS, DE_HASH, \
  KC_LSFT, DE_Y,    DE_X,    DE_C,    DE_V,    DE_B,    DE_N,    DE_M,    DE_COMM, DE_DOT,  DE_MINS, KC_ENT , \
  KC_LCTL, KC_LALT, KC_ALGR, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT \
),

/* Lower
 * ,-----------------------------------------------------------------------------------.
 * |   °  |   !  |   "  |   §  |   $  |   %  |   &  |   /  |   (  |   )  |   =  | Bksp |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   @  |   €  |   ü  |   ?  |  ´   |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * | Shift|  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |   |  |   ö  |   ä  |      |Enter |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
 * `-----------------------------------------------------------------------------------'
 */
[_LOWER] = LAYOUT( \
  DE_CIRC, DE_EXLM, DE_DQOT, DE_PARA, DE_DLR,  DE_PERC, DE_AMPR, DE_SLSH, DE_LPRN, DE_RPRN, DE_EQL, KC_BSPC, \
  KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   DE_AT  , DE_EURO, KC_LBRC, DE_QST, DE_QUOT, \
  KC_LSFT, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12, DE_PIPE , KC_SCLN, KC_QUOT, _______, KC_ENT, \
  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
),

/* Raise
 * ,-----------------------------------------------------------------------------------.
 * |   °  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   {  |   [  |   ]  |   }  |  \   |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * | Shift|  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |      |      |      |      |Enter |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
 * `-----------------------------------------------------------------------------------'
 */
[_RAISE] = LAYOUT( \
  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_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   DE_LCBR, DE_LBRC, DE_RBRC, DE_RCBR , DE_BSLS, \
  KC_LSFT, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  _______, _______, _______, _______, KC_ENT, \
  _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY \
),

/* Adjust (Lower + Raise)
 * ,-----------------------------------------------------------------------------------.
 * |      | Reset|      |      |      |      |      |      |      |      |      |  Del |
 * |------+------+------+------+------+-------------+------+------+------+------+------|
 * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwertz|      |      |      |      |
 * |------+------+------+------+------+------|------+------+------+------+------+------|
 * |      |      |      |      |      |      |      |      |      |      |      |      |
 * |------+------+------+------+------+------+------+------+------+------+------+------|
 * |      |      |      |      |      |             |      |      |      |      |      |
 * `-----------------------------------------------------------------------------------'
 */
[_ADJUST] =  LAYOUT( \
  _______, RESET  , _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_DEL, \
  _______, _______, _______, AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTZ,  _______, _______, _______, _______, \
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______ \
)


};

#ifdef AUDIO_ENABLE
float tone_qwertz[][2]     = SONG(QWERTY_SOUND);
float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
#endif

void persistent_default_layer_set(uint16_t default_layer) {
  eeconfig_update_default_layer(default_layer);
  default_layer_set(default_layer);
}

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  switch (keycode) {
    case QWERTZ:
      if (record->event.pressed) {
        #ifdef AUDIO_ENABLE
          PLAY_SONG(tone_qwertz);
        #endif
        persistent_default_layer_set(1UL<<_QWERTZ);
      }
      return false;
      break;
    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;
    case ADJUST:
      if (record->event.pressed) {
        layer_on(_ADJUST);
      } else {
        layer_off(_ADJUST);
      }
      return false;
      break;
  }
  return true;
}