static bool check_code ( fsm_t * p_this ) Check if there is a new code in the infrared receiver FSM. 1. Call function fsm_rx_get_code() and retrieve the code. 2. If the code is not '0x00' store it in the field rx_code. 3. Return true if the code is not '0x00'. Otherwise, return false. Parameters p_this Pointer to an fsm_t struct than contains an fsm_retina_t.

bool check_code(fsm_t *p_this) {
  uint8_t code = 0;
  
  code = fsm_rx_get_code(p_this->p_retina);
  
  if (code != 0) {
    p_this->rx_code = code;
    return true;
  }
  
  return false;
}