qmk_firmware/keyboards/playkbtw/ca66/keymaps/default/keymap.c

#include QMK_KEYBOARD_H

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

  LAYOUT(
    KC_GESC,          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_BSPC, KC_PSCR,
    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_DEL,  
    MO(1),            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_PGUP, 
    KC_LSFT, KC_GRV,  KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,  KC_UP,                     KC_PGDN, 
    KC_LCTL,          KC_LGUI, KC_LALT,          LT(1, KC_SPC),    KC_SPC,           KC_RALT, MO(1),   KC_RCTL, KC_LEFT,  KC_DOWN, KC_RGHT),

  LAYOUT(
    KC_GRV,           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_DEL,  KC_DEL, RGB_TOG,
    KC_CAPS,          KC_TRNS, KC_UP,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RESET,   KC_PSCR, KC_SLCK, KC_PAUS, KC_TRNS,         RGB_MOD, 
    KC_TRNS,          KC_LEFT, KC_DOWN, KC_RIGHT,KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_VAD, RGB_VAI,          KC_INS,          KC_HOME, 
    KC_LSFT, KC_TRNS, KC_MPRV, KC_MPLY, KC_MNXT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_MUTE, KC_VOLD, KC_VOLU, KC_TRNS, RGB_HUI,                  KC_END,  
    KC_LCTL,          KC_LGUI, KC_LALT,          KC_TRNS,          KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, RGB_SAD, RGB_HUD, RGB_SAI),
};

void matrix_init_user(void) {
}

void matrix_scan_user(void) {
}

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
	return true;
}

void led_set_user(uint8_t usb_led) {
	if (usb_led & (1 << USB_LED_CAPS_LOCK)) {
		DDRD |= (1 << 1); PORTD &= ~(1 << 1);
	} else {
		DDRD &= ~(1 << 1); PORTD &= ~(1 << 1);
	}
}