Current planck keymap

keymap_kiwec.c

#include QMK_KEYBOARD_H

// Readability
#define _______ KC_TRNS
#define XXXXXXX KC_NO

// Layers
#define DVORAK_LAYER 0
#define GAMING_LAYER 1
#define GMGTAB_LAYER 2
#define GMGDVK_LAYER 3
#define LOWER_LAYER 4
#define UPPER_LAYER 5

// Function keys
#define PLAYCTR FUNC(1)  // Play/pause on tap, LCTRL on hold
#define COMPCTR FUNC(2)  // Compose on tap, RCTRL on hold
#define LALTESC FUNC(3)  // Escape on tap, LALT on hold
#define L_GMING FUNC(4)  // Toggle gaming layer

// Compose key must be enabled for most macros
#define KC_COMP KC_RALT     // Compose key
#define KC_CDIL M(0)        // Cedilla
#define KC_AIGU M(1)        // Acute accent
#define KC_GRVE M(2)        // Grave accent
#define KC_CCRC M(3)        // Circumflex accent
#define KC_EURO M(4)        // Euro sign
#define KC_CTRC LCTL(KC_C)  // Ctrl-C
#define KC_CTRV LCTL(KC_V)  // Ctrl-V
#define KC_QUST S(KC_SLSH)  // ?

// Layer switches
#define L_YDVRK M(6)             // Y and enable temp dvorak layer
#define L_UDvRK M(7)             // U and enable temp dvorak layer
#define L_DELDK M(8)             // Del and enable temp dvorak layer
#define L_ESCDK M(9)             // Esc and disable temp dvorak layer
#define L_ENTDK M(10)            // Enter and disable temp dvorak layer
#define L_GGTAB M(11)            // On hold, use gaming tab layer
#define L_LOWER MO(LOWER_LAYER)  // On hold, use lower layer
#define L_UPPER MO(UPPER_LAYER)  // On hold, use upper layer

// clang-format off
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
	[DVORAK_LAYER] = LAYOUT_planck_grid(
		KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC  ,
		LALTESC, KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_ENT   ,
		KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_DEL   ,
		PLAYCTR, KC_PGUP, KC_PGDN, KC_LGUI, L_LOWER, KC_SPC,  KC_SPC,  L_UPPER, KC_AIGU, KC_GRVE, KC_CCRC, COMPCTR
	),
	[GAMING_LAYER] = LAYOUT_planck_grid(
		KC_BSPC, KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    L_YDVRK, L_UDvRK, KC_I,    KC_O,    KC_P,    KC_ESC   ,
		KC_LSFT, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_QUOT, KC_ENT   ,
		KC_LCTL, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_HOME, KC_UP,   KC_END,  L_DELDK  ,
		L_GGTAB, KC_DOT,  KC_COMM, KC_SCLN, KC_SLSH, KC_SPC,  KC_SPC,  L_UPPER, KC_LEFT, KC_DOWN, KC_RGHT, KC_INS
	),
	[GMGTAB_LAYER] = LAYOUT_planck_grid(
		KC_0,    KC_4,    KC_5,    KC_6,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX  ,
		XXXXXXX, KC_1,    KC_2,    KC_3,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX  ,
		XXXXXXX, KC_7,    KC_8,    KC_9,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX  ,
		_______, KC_BSLS, KC_LBRC, KC_RBRC, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX
	),
	[GMGDVK_LAYER] = LAYOUT_planck_grid(
		XXXXXXX, KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC  ,
		L_ESCDK, KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    L_ENTDK  ,
		KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    L_DELDK  ,
		XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, L_LOWER, KC_SPC,  KC_SPC,  XXXXXXX, KC_AIGU, KC_GRVE, KC_CCRC, COMPCTR
	),
	[LOWER_LAYER] = LAYOUT_planck_grid(
		XXXXXXX, XXXXXXX, KC_HOME, KC_UP,   KC_END,  KC_CTRC, XXXXXXX, KC_NLCK, KC_P7,   KC_P8,   KC_P9,   KC_BSPC  ,
		XXXXXXX, XXXXXXX, KC_LEFT, KC_DOWN, KC_RGHT, KC_CTRV, XXXXXXX, XXXXXXX, KC_P4,   KC_P5,   KC_P6,   KC_PMNS  ,
		XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_P1,   KC_P2,   KC_P3,   KC_PPLS  ,
		KC_MNXT, KC_MPRV, KC_VOLU, KC_VOLD, _______, KC_MUTE, KC_MUTE, XXXXXXX, KC_PDOT, KC_P0,   KC_PEQL, KC_PENT
	),
	[UPPER_LAYER] = LAYOUT_planck_grid(
		KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12   ,
		LALTESC, KC_AMPR, KC_EXLM, KC_EQL,  KC_PLUS, KC_HASH, KC_DLR,  KC_LPRN, KC_LBRC, KC_LCBR, KC_SLSH, _______  ,
		KC_LSFT, KC_ASTR, KC_QUST, KC_PIPE, KC_MINS, KC_AT,   KC_EURO, KC_RPRN, KC_RBRC, KC_RCBR, KC_BSLS, _______  ,
		PLAYCTR, KC_TILD, KC_PERC, KC_UNDS, L_GMING, _______, _______, _______, KC_GRV,  KC_CIRC, KC_CDIL, KC_F13
	),
};
// clang-format on

const uint16_t PROGMEM fn_actions[] = {
    [1] = ACTION_MODS_TAP_KEY(MOD_LCTL, KC_MPLY),
    [2] = ACTION_MODS_TAP_KEY(MOD_RCTL, KC_COMP),
    [3] = ACTION_MODS_TAP_KEY(MOD_LALT, KC_ESC),
    [4] = ACTION_LAYER_TOGGLE(GAMING_LAYER)};

/**
 * Sends a key
 */
void send_key(uint16_t key) {
  register_code(key);
  unregister_code(key);
}

/**
 * Toggles a layer
 */
void toggle_layer(uint16_t layer) {
  if (IS_LAYER_ON(layer)) {
    layer_off(layer);
  } else {
    layer_on(layer);
  }
}

/**
 * Enable layer while holding key
 * As opposed to ACTION_LAYER_MOMENTARY, this actually sends the key
 */
const macro_t* layer_momentary_send(keyrecord_t* record, uint16_t layer,
                                    uint16_t key) {
  if (record->event.pressed) {
    layer_on(layer);
    register_code(key);
  } else {
    layer_off(layer);
    unregister_code(key);
  }

  return MACRO_NONE;
}

/**
 * Sends the specified key and toggles the layer
 */
const macro_t* tap_toggle_layer(keyrecord_t* record, uint16_t layer,
                                uint16_t key) {
  if (record->event.pressed) {
    toggle_layer(layer);
    send_key(key);
  }

  return MACRO_NONE;
}

const macro_t* action_get_macro(keyrecord_t* record, uint8_t id, uint8_t opt) {
  switch (id) {
    case 0:
      return MACRODOWN(T(COMP), T(COMM), END);
    case 1:
      return MACRODOWN(T(COMP), T(QUOTE), END);
    case 2:
      return MACRODOWN(T(COMP), T(GRV), END);
    case 3:
      return MACRODOWN(T(COMP), D(LSFT), T(6), U(LSFT), END);
    case 4:
      return MACRODOWN(T(COMP), T(C), T(EQL), END);
    case 6:
      return tap_toggle_layer(record, GMGDVK_LAYER, KC_Y);
    case 7:
      return tap_toggle_layer(record, GMGDVK_LAYER, KC_U);
    case 8:
      return tap_toggle_layer(record, GMGDVK_LAYER, KC_DEL);
    case 9:
      return tap_toggle_layer(record, GMGDVK_LAYER, KC_ESC);
    case 10:
      return tap_toggle_layer(record, GMGDVK_LAYER, KC_ENT);
    case 11:
      return layer_momentary_send(record, GMGTAB_LAYER, KC_TAB);
    default:
      return MACRO_NONE;
  }
}

Updated layout for Planck EZ on qmk's master branch :)