qmk_firmware_custom/keyboards/sentraq/s65_x/s65_x.c

#include "s65_x.h"

void matrix_init_kb(void) {
  // put your keyboard start-up code here
  // runs once when the firmware starts up
  matrix_init_user();
};

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

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);
}