qmk-firmware/keyboards/ckeys/thedora/thedora.c

#include "thedora.h"

void matrix_init_kb(void) {
  // put your keyboard start-up code here
  // runs once when the firmware starts up
  // Turn status LED on
  //DDRD |= (1<<6);
  //PORTD |= (1<<6);

  matrix_init_user();
}

void matrix_scan_kb(void) {
  // put your looping keyboard code here
  // runs every cycle (a lot)
  matrix_scan_user();
}

bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
  // put your per-action keyboard code here
  // runs for every action, just before processing by the firmware
  return process_record_user(keycode, record);
}

void led_set_kb(uint8_t usb_led) {
  // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
  led_set_user(usb_led);
}