qmk_firmware/keyboards/melody96/keymaps/default_std60_split_num0/keymap.c

#include QMK_KEYBOARD_H

// Defines the keycodes used by our macros in process_record_user
enum custom_keycodes {
    KC_P00 = SAFE_RANGE
};


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

    [0] = LAYOUT_std60_split_num0(
        KC_ESC,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_HOME, KC_END,  KC_PGUP, KC_PGDN, KC_DEL,
        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_EQL,           KC_BSPC, KC_NLCK, KC_PSLS, KC_PAST, KC_PMNS,
        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC,          KC_BSLS, KC_P7,   KC_P8,   KC_P9,
        KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,                   KC_ENT,  KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
        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_P1,   KC_P2,   KC_P3,
        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(1),            KC_APP,  KC_RCTL, KC_P0,   KC_P00,  KC_PDOT, KC_PENT
    ),

    [0] = LAYOUT_std60_split_num0(
        RESET,   _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_MUTE, KC_VOLD, KC_VOLU, _______, _______, _______,
        _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, _______, _______, _______,
        _______, RGB_TOG, _______, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_VAI, RGB_VAD, _______, _______, _______,          _______, _______, _______, _______,
        BL_TOGG, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,                   _______, _______, _______, _______, _______,
        _______,          _______, _______, BL_DEC,  BL_TOGG, BL_INC,  _______, _______, _______, _______, _______,                   _______, _______, _______, _______,
        _______, _______, _______,                            _______,                            _______, _______,          _______, _______, _______, _______, _______, _______
    ),

};

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case KC_P00:
            if (record->event.pressed) {
                SEND_STRING("00");
            }
            break;
    }
    return true;
}