qmk_firmware/keyboards/gherkin/keymaps/default/keymap.c

#include QMK_KEYBOARD_H

#define _______ KC_TRNS
#define FN1_Q LT(1, KC_Q)

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

  [0] = LAYOUT_ortho_3x10(
    FN1_Q,   KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,
    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_ESC,
    KC_Z,    KC_X,    KC_C,    KC_V,    KC_BSPC, KC_SPC,  KC_B,    KC_N,    KC_M,    KC_ENT
  ),

  [1] = LAYOUT_ortho_3x10(
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, _______, _______, _______, _______, BL_INC,
    _______, _______, _______, _______, _______, _______, RESET,   _______, _______, BL_DEC
  ),

};

const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {
  keyevent_t event = record->event;
    (void)event;

  switch (id) {

  }
  return MACRO_NONE;
}

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_NUM_LOCK)) {
    DDRD |= (1 << 5); PORTD &= ~(1 << 5);
  } else {
    DDRD &= ~(1 << 5); PORTD &= ~(1 << 5);
  }

  if (usb_led & (1 << USB_LED_CAPS_LOCK)) {
    DDRB |= (1 << 0); PORTB &= ~(1 << 0);
  } else {
    DDRB &= ~(1 << 0); PORTB &= ~(1 << 0);
  }

  if (usb_led & (1 << USB_LED_SCROLL_LOCK)) {

  } else {

  }

  if (usb_led & (1 << USB_LED_COMPOSE)) {

  } else {

  }

  if (usb_led & (1 << USB_LED_KANA)) {

  } else {

  }

}