qmk_firmware/keyboards/planck/keymaps/jacob/keymap.c

#include QMK_KEYBOARD_H

//Simple Keymap where CTRL, WINKEY, and ALT keys are placed in a more familiar location for Windows users.
//Focus of this particular keymap is to enable easy transition from more traditional keyboards to OLKB Planck.

// Each layer gets a name for readability, which is then used in the keymap matrix below.
#define _QW 0
#define _LW 1
#define _RS 2

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  [_QW] = LAYOUT_planck_grid( /* Qwerty */
    KC_TAB,  KC_Q,    KC_W,    KC_E,   KC_R,    KC_T,   KC_Y,   KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
    KC_ESC,  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, MT(MOD_RSFT, KC_ENT),
    KC_LCTL, KC_LGUI, KC_LALT, M(0),   MO(_LW), KC_SPC, KC_SPC, MO(_RS), KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
  ),
  [_RS] = LAYOUT_planck_grid( /* RAISE */
    KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL ,
    KC_TRNS, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
    KC_TRNS, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
  ),
  [_LW] = LAYOUT_planck_grid( /* LOWER */
    KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_DEL ,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_LBRC, KC_RBRC, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
  )
};

const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
{
  // MACRODOWN only works in this function
  switch(id) {
    case 0:
      if (record->event.pressed) {
        register_code(KC_RSFT);
        #ifdef BACKLIGHT_ENABLE
          backlight_step();
        #endif
      } else {
        unregister_code(KC_RSFT);
      }
      break;
  }
  return MACRO_NONE;
};