void nextion_send(const char* idx, const char* val)
{
  char buf[50];

  char* part1 = "=\"";
  char* part2 = "\"";

  strcpy(buf, idx);
  strcpy(buf + strlen(idx), part1);
  strcpy(buf + strlen(idx) + strlen(part1), val);
  strcpy(buf + strlen(idx) + strlen(part1) + strlen(val), part2);
#ifdef DEBUG
  Serial.println(buf);
#endif
  sendCommand(buf);
}


void nex_send_float(const char* idx, float val, int len, int dec)
{
  char buf[50];

  char result[8]; // Buffer big enough for 7-character float
  dtostrf(val, len, dec, result); // Leave room for too large numbers!

  char* part1 = "=\"";
  char* part2 = "\"";

  strcpy(buf, idx);
  strcpy(buf + strlen(idx), part1);
  strcpy(buf + strlen(idx) + strlen(part1), result);
  strcpy(buf + strlen(idx) + strlen(part1) + strlen(result), part2);
#ifdef DEBUG
  Serial.println(buf);
#endif
  sendCommand(buf);
}


void btn_1_PopCallback(void *ptr)
{
  uint32_t dual_state;

  btn_1.getValue(&dual_state);
  if (dual_state)
    main_btn_hanglamp = 1;
  else
    main_btn_hanglamp = 0;

  domoticz_send_nvalue(idx_hanglamp, main_btn_hanglamp);
}


void btn_2_PopCallback(void *ptr)
{
  uint32_t dual_state;

  btn_2.getValue(&dual_state);
  if (dual_state)
    main_btn_staandelamp = 1;
  else
    main_btn_staandelamp = 0;

  domoticz_send_nvalue(idx_staandelamp, main_btn_staandelamp);
}


void btn_3_PopCallback(void *ptr)
{
  uint32_t dual_state;

  /* Get the state value of dual state button component . */
  btn_3.getValue(&dual_state);
  if (dual_state)
    main_btn_haardverlichting = 1;
  else
    main_btn_haardverlichting = 0;

  domoticz_send_nvalue(idx_haardverlichting, main_btn_haardverlichting);
}


void btn_4_PopCallback(void *ptr)
{
  uint32_t dual_state;

  /* Get the state value of dual state button component . */
  btn_4.getValue(&dual_state);
  if (dual_state)
    main_btn_tuinverlichting = 1;
  else
    main_btn_tuinverlichting = 0;

  domoticz_send_nvalue(idx_tuinverlichting, main_btn_tuinverlichting);
}


void btn_5_PopCallback(void *ptr)
{
  uint32_t dual_state;

  /* Get the state value of dual state button component . */
  btn_5.getValue(&dual_state);
  if (dual_state)
  {
    domoticz_send_nvalue(idx_rooster, 1);
  }
  else
  {
    domoticz_send_nvalue(idx_rooster, 0);
  }
}