tmk_keyboard/keyboard/ergodox/keymap_cub.h

static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    /*
     * Keymap: Default Layer in QWERTY
     *
     * ,--------------------------------------------------.           ,--------------------------------------------------.
     * |   ~    |   1  |   2  |   3  |   4  |   5  |   \  |           |   -  |   6  |   7  |   8  |   9  |   0  |   =    |
     * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
     * | Tab    |   Q  |   W  |   E  |   R  |   T  | ~L5  |           | ~L6  |   Y  |   U  |   I  |   O  |   P  |   [    |
     * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
     * | LShift |   A  |   S  |   D  |   F  |   G  |------|           |------|   H  |   J  |   K  |   L  |   ;  |   '    |
     * |--------+------+------+------+------+------|  L0  |           | ~L7  |------+------+------+------+------+--------|
     * | LCtrl  |   Z  |   X  |   C  |   V  |   B  |      |           |      |   N  |   M  |   ,  |   .  |   /  |   ]    |
     * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
     *   | ~L5  | ~L2  | Caps | LAlt | LGui |                                       |  Lft |  Up  |  Dn  | Rght | ~L6  |
     *   `----------------------------------'                                       `----------------------------------'
     *                                        ,-------------.       ,-------------.
     *                                        | +L2  | Home |       | PgUp | Del  |
     *                                 ,------|------|------|       |------+------+------.
     *                                 |      |      |  End |       | PgDn |      |      |
     *                                 | BkSp |  ESC |------|       |------| Enter| Space|
     *                                 |      |      |  Spc |       | Ins  |      |      |
     *                                 `--------------------'       `--------------------'
     *
     *
     *
     ****************************************************************************************************
     *
     * Under XOrg, I use my own mapping from QWERTY to "Workman for Programmers"
     * See XOrg files in ./addons/ subdirectory.
     *
     * I have to do so, because of two things:
     * 1) my native language is Russian, and XOrg keymap for it is based on QWERTY layout
     * 2) I want to have non-standart shifted keys, like $ (as normal) and @ (as shifted), or _ and -
     *
     * And even if (2) could be solved using FN* keys (but there is limit in firmware for only 32 such
     * keys), then (1) can't be solved at firmware level at all.
     *
     * So, I have to stick with QWERTY as my main layout + my own XOrg keyboard layout for English.
     * But sometimes I have to input something when XOrg is not active - for example, in Linux console,
     * or in firmware console (while debugging firmware), or when keyboard is connected to not my computer.
     *
     * For such cases I have Layer1 :)
     * // hint: switch to Layer1 is only at Layer6
     *
     ****************************************************************************************************
     *
     *
     *
     * Keymap: Default Layer in Workman
     *
     * ,--------------------------------------------------.           ,--------------------------------------------------.
     * |   ~    |   ;  |   !  |   #  |   {  |   }  |   '  |           |   ^  |   [  |   ]  |   *  |   (  |   )  |   =    |
     * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
     * | Tab    |   Q  |   D  |   R  |   W  |   B  | ~L5  |           | ~L6  |   J  |   F  |   U  |   P  |   $  |   :    |
     * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
     * | LShift |   A  |   S  |   H  |   T  |   G  |------|           |------|   Y  |   N  |   E  |   O  |   I  |   -    |
     * |--------+------+------+------+------+------|  L0  |           | ~L7  |------+------+------+------+------+--------|
     * | LCtrl  |   Z  |   X  |   M  |   C  |   V  |      |           |      |   K  |   L  |   ,  |   .  |   /  |   |    |
     * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
     *   | ~L5  | ~L2  | Caps | LAlt | LGui |                                       |  Lft |  Up  |  Dn  | Rght | ~L6  |
     *   `----------------------------------'                                       `----------------------------------'
     *                                        ,-------------.       ,-------------.
     *                                        | +L2  | Home |       | PgUp | Del  |
     *                                 ,------|------|------|       |------+------+------.
     *                                 |      |      |  End |       | PgDn |      |      |
     *                                 | BkSp |  ESC |------|       |------| Enter| Space|
     *                                 |      |      |  Spc |       | Ins  |      |      |
     *                                 `--------------------'       `--------------------'
     *
     * Keymap: Default Layer in Workman / with Shift
     *
     * ,--------------------------------------------------.           ,--------------------------------------------------.
     * |   `    |   1  |   2  |   3  |   4  |   5  |   "  |           |   \  |   6  |   7  |   8  |   9  |   0  |   +    |
     * |--------+------+------+------+------+-------------|           |------+------+------+------+------+------+--------|
     * | Tab    |   Q  |   D  |   R  |   W  |   B  | ~L5  |           | ~L6  |   J  |   F  |   U  |   P  |   @  |   %    |
     * |--------+------+------+------+------+------|      |           |      |------+------+------+------+------+--------|
     * | LShift |   A  |   S  |   H  |   T  |   G  |------|           |------|   Y  |   N  |   E  |   O  |   I  |   _    |
     * |--------+------+------+------+------+------|  L0  |           | ~L7  |------+------+------+------+------+--------|
     * | LCtrl  |   Z  |   X  |   M  |   C  |   V  |      |           |      |   K  |   L  |   ,  |   .  |   /  |   &    |
     * `--------+------+------+------+------+-------------'           `-------------+------+------+------+------+--------'
     *   | ~L5  | ~L2  | Caps | LAlt | LGui |                                       |  Lft |  Up  |  Dn  | Rght | ~L6  |
     *   `----------------------------------'                                       `----------------------------------'
     *                                        ,-------------.       ,-------------.
     *                                        | +L2  | Home |       | PgUp | Del  |
     *                                 ,------|------|------|       |------+------+------.
     *                                 |      |      |  End |       | PgDn |      |      |
     *                                 | BkSp |  ESC |------|       |------| Enter| Space|
     *                                 |      |      |  Spc |       | Ins  |      |      |
     *                                 `--------------------'       `--------------------'
     *
     */

    KEYMAP(  // Layer0: default, leftled:none
        // left hand
        GRV, 1,   2,   3,   4,   5,   BSLS,
        TAB, Q,   W,   E,   R,   T,   FN19,
        FN11,FN25,FN24,D,   F,   G,
        LCTL,Z,   X,   C,   FN23,B,   FN15,
        FN19,FN18,CAPS,LALT,FN12,
                                      FN17,HOME,
                                           END,
                                 FN5, FN6, FN7,
        // right hand
             MINS,6,   7,   8,   9,   0,   EQL,
             FN20,Y,   U,   I,   O,   P,   LBRC,
                  FN22,J,   K,   L,   SCLN,FN13,
             FN21,N,   M,   COMM,DOT, SLSH,FN14,
                       LEFT,UP,  DOWN,RGHT,FN20,
        PGUP,DEL,
        PGDN,
        FN8, FN9, FN10
    ),

    KEYMAP(  // Layer1: Workman layout, leftled:all
        // left hand
        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,
        TRNS,Q,   D,   R,   W,   B,   TRNS,
        TRNS,A,   S,   H,   T,   G,
        TRNS,Z,   X,   M,   C,   V,   TRNS,
        TRNS,TRNS,TRNS,TRNS,TRNS,
                                      TRNS,TRNS,
                                           TRNS,
                                 TRNS,TRNS,TRNS,
        // right hand
             TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,
             TRNS,J,   F,   U,   P,   4,   TRNS,
                  Y,   N,   E,   O,   I,   TRNS,
             TRNS,K,   L,   TRNS,TRNS,TRNS,TRNS,
                       TRNS,TRNS,TRNS,TRNS,TRNS,
        TRNS,TRNS,
        TRNS,
        TRNS,TRNS,TRNS
    ),

    KEYMAP(  // Layer2: mouse + numpad, leftled:blue
        // left hand
        TRNS,NO,  NO,  NO,  NO,  PAUS,PSCR,
        TRNS,WH_L,WH_U,WH_D,WH_R,BTN2,TRNS,
        TRNS,MS_L,MS_U,MS_D,MS_R,BTN1,
        TRNS,NO,  NO,  NO,  TRNS,BTN3,TRNS,
        TRNS,TRNS,TRNS,TRNS,TRNS,
                                      TRNS,TRNS,
                                           TRNS,
                                 TRNS,TRNS,TRNS,
        // right hand
             SLCK,NLCK,PSLS,PAST,PAST,PMNS,BSPC,
             TRNS,NO,  P7,  P8,  P9,  PMNS,BSPC,
                  TRNS,P4,  P5,  P6,  PPLS,PENT,
             TRNS,NO,  P1,  P2,  P3,  PPLS,PENT,
                       P0,  PDOT,SLSH,PENT,PENT,
        TRNS,TRNS,
        TRNS,
        TRNS,TRNS,TRNS
    ),

    KEYMAP(  // Layer3: F-keys + PgUp/PgDn on right hand, leftled:green
        // left hand
        TRNS,NO,  NO,  NO,  NO,  NO,  NO,
        TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
        TRNS,NO,  TRNS,NO,  NO,  NO,
        TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
        TRNS,TRNS,TRNS,LALT,LGUI,
                                      TRNS,TRNS,
                                           TRNS,
                                 LCTL,LSFT,TRNS,
        // right hand
             NO,  NO,  NO,  NO,  NO,  NO,  TRNS,
             TRNS,NO,  F1,  F2,  F3,  F4,  PGUP,
                  NO,  F5,  F6,  F7,  F8,  PGDN,
             TRNS,NO,  F9,  F10, F11, F12, NO,
                       RGUI,RALT,TRNS,TRNS,TRNS,
        TRNS,TRNS,
        TRNS,
        TRNS,RSFT,RCTL
    ),

    KEYMAP(  // Layer4: unconvenient keys on right hand, leftled:red
        // left hand
        TRNS,NO,  NO,  NO,  NO,  NO,  NO,
        TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
        TRNS,TRNS,NO,  NO,  NO,  NO,
        TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
        TRNS,TRNS,TRNS,LALT,LGUI,
                                      TRNS,TRNS,
                                           TRNS,
                                 TRNS,TRNS,TRNS,

        // in Workman this will be:
        //              =
        //      { } ( ) +
        //      ' " ^ ^ \
        //      [ < > ] \

        // right hand
             NO,  NO,  NO,  NO,  NO,  NO,  TRNS,
             TRNS,NO,  4,   5,   9,   0,   PPLS,
                  NO,  BSLS,FN1, MINS,MINS,FN2,
             TRNS,NO,  6,   FN3, FN4, 7,   FN2,
                       TRNS,TRNS,TRNS,TRNS,TRNS,
        TRNS,TRNS,
        TRNS,
        TRNS,TRNS,TRNS
    ),

    KEYMAP(  // Layer5: F-keys instead of numbers, leftled:red
        // left hand
        TRNS,F1,  F2,  F3,  F4,  F5,  F6,
        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,
        // right hand
             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
    ),

    KEYMAP(  // Layer6: F-keys, cursor, Workman-layer switch, Teensy, leftled:red+onboard
        // left hand
        TRNS,F1,  F2,  F3,  F4,  F5,  F6,
        FN0, NO,  PGUP,UP,  PGDN,PGUP,TRNS,
        TRNS,NO,  LEFT,DOWN,RGHT,PGDN,
        TRNS,NO,  NO,  END, HOME,NO,  TRNS,
        FN16,TRNS,TRNS,TRNS,TRNS,
                                      TRNS,TRNS,
                                           TRNS,
                                 TRNS,TRNS,TRNS,
        // right hand
             F7,  F8,  F9,  F10, F11, F12, MINS,
             TRNS,PGUP,PGUP,UP,  PGDN,NO,  FN0,
                  PGDN,LEFT,DOWN,RGHT,NO,  TRNS,
             TRNS,NO,  HOME,END, NO,  NO,  TRNS,
                       TRNS,TRNS,TRNS,TRNS,TRNS,
        TRNS,TRNS,
        TRNS,
        TRNS,TRNS,TRNS
    ),

    //
    // rarely used
    //

    KEYMAP(  // Layer7: F-keys only
        // left hand
        TRNS,NO,  NO,  NO,  NO,  NO,  NO,
        TRNS,F13, F14, F15, F16, NO,  TRNS,
        TRNS,F17, F18, F19, F20, NO,
        TRNS,F21, F22, F23, F24, NO,  TRNS,
        TRNS,TRNS,TRNS,TRNS,TRNS,
                                      TRNS,TRNS,
                                           TRNS,
                                 TRNS,TRNS,TRNS,
        // right hand
             NO,  NO,  NO,  NO,  NO,  NO,  TRNS,
             TRNS,NO,  F1,  F2,  F3,  F4,  TRNS,
                  NO,  F5,  F6,  F7,  F8,  TRNS,
             TRNS,NO,  F9,  F10, F11, F12, TRNS,
                       TRNS,TRNS,TRNS,TRNS,TRNS,
        TRNS,TRNS,
        TRNS,
        TRNS,TRNS,TRNS
    ),

/*
    // templates to copy from

    KEYMAP(  // LayerN: transparent on edges + hard-defined thumb keys, all others are empty
        // left hand
        TRNS,NO,  NO,  NO,  NO,  NO,  NO,
        TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
        TRNS,NO,  NO,  NO,  NO,  NO,
        TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
        TRNS,TRNS,TRNS,LALT,LGUI,
                                      TRNS,TRNS,
                                           TRNS,
                                 LCTL,LSFT,TRNS,
        // right hand
             NO,  NO,  NO,  NO,  NO,  NO,  TRNS,
             TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
                  NO,  NO,  NO,  NO,  NO,  TRNS,
             TRNS,NO,  NO,  NO,  NO,  NO,  TRNS,
                       RGUI,RALT,TRNS,TRNS,TRNS,
        TRNS,TRNS,
        TRNS,
        TRNS,RSFT,RCTL
    ),
    KEYMAP(  // LayerN: fully transparent
        // left hand
        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,
        // right hand
             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
    ),
*/

};

/* id for user defined functions */
enum function_id {
    TEENSY_KEY,
};

/*
 * Fn action definition
 */
static const uint16_t PROGMEM fn_actions[] = {
    ACTION_FUNCTION(TEENSY_KEY),                    // FN0  - Teensy key

    ACTION_MODS_KEY(MOD_LSFT, KC_BSLS),             // FN1  = Shifted BackSlash // " in Workman
    ACTION_MODS_KEY(MOD_LSFT, KC_MINS),             // FN2  = Shifted Minus     // \ in Workman
    ACTION_MODS_KEY(MOD_LSFT, KC_COMM),             // FN3  = Shifted comma     // < in Workman
    ACTION_MODS_KEY(MOD_LSFT, KC_DOT),              // FN4  = Shifted dot       // > in Workman

    ACTION_MODS_TAP_KEY(MOD_LCTL, KC_BSPC),         // FN5  = LShift with tap BackSpace
    ACTION_MODS_TAP_KEY(MOD_LSFT, KC_ESC),          // FN6  = LCtrl  with tap Escape
    ACTION_MODS_TAP_KEY(MOD_LALT, KC_SPC),          // FN7  = LAlt   with tap Space
    ACTION_MODS_TAP_KEY(MOD_RALT, KC_INS),          // FN8  = RAlt   with tap Ins
    ACTION_MODS_TAP_KEY(MOD_RSFT, KC_ENT),          // FN9  = RShift with tap Enter
    ACTION_MODS_TAP_KEY(MOD_RCTL, KC_SPC),          // FN10 = RCtrl  with tap Space

    ACTION_MODS_TAP_KEY(MOD_LSFT, KC_TAB),          // FN11 = LShift with tap Tab
    ACTION_MODS_TAP_KEY(MOD_LGUI, KC_ESC),          // FN12 = LGui   with tap Escape
    ACTION_MODS_TAP_KEY(MOD_RSFT, KC_QUOT),         // FN13 = RShift with tap quotes
    ACTION_MODS_TAP_KEY(MOD_RCTL, KC_RBRC),         // FN14 = RCtrl  with tap ]

    ACTION_LAYER_SET(0, ON_BOTH),                   // FN15 - set Layer0
    ACTION_LAYER_SET(1, ON_BOTH),                   // FN16 - set Layer1, to use Workman layout at firmware level
    ACTION_LAYER_SET(2, ON_BOTH),                   // FN17 - set Layer2, to use with Numpad keys

    ACTION_LAYER_MOMENTARY(2),                      // FN18 - momentary Layer2, to use with Numpad keys
    ACTION_LAYER_MOMENTARY(5),                      // FN19 - momentary Layer5, to use with F* keys on top row
    ACTION_LAYER_MOMENTARY(6),                      // FN20 - momentary Layer6, to use with F* keys, cursor, Teensy, Workman-layer switch
    ACTION_LAYER_MOMENTARY(7),                      // FN21 - momentary Layer7, to use with F* keys (F1-F24)

    ACTION_LAYER_TAP_KEY(2, KC_H),                  // FN22 = momentary Layer2 on H key, to use with Mouse keys
    ACTION_LAYER_TAP_KEY(2, KC_V),                  // FN23 = momentary Layer2 on V key, to use with Numpad keys
    ACTION_LAYER_TAP_KEY(3, KC_S),                  // FN24 = momentary Layer3 on S key, to use with F* keys
    ACTION_LAYER_TAP_KEY(4, KC_A),                  // FN25 = momentary Layer4 on A key, to use with unconvenient keys
};

void action_function(keyrecord_t *event, uint8_t id, uint8_t opt)
{
    print("action_function called\n");
    print("id  = "); phex(id); print("\n");
    print("opt = "); phex(opt); print("\n");
    if (id == TEENSY_KEY) {
        clear_keyboard();
        print("\n\nJump to bootloader... ");
        _delay_ms(250);
        bootloader_jump(); // should not return
        print("not supported.\n");
    }
}