Getting mqtt payload to print to lcd

Projects Programming
1

would love some help getting mqtt payload showing on my display have try some example but cant get them to work as all of them interfere with currant subscribe i need more than just one thankyou to anyone that helps me with this mess currant code works just cant get raw payloads on screen

/ ===/=========================================================
// Example:     LCDML: graphic display with u8g
// ============================================================
// Author:      Jomelo
// Last update: 21.01.2018
// License:     MIT
// ============================================================
// Description:
// This example shows how to use the u8glib with the LCDMenuLib
// The menu can placed in a box that can be placed anywhere on
// the screen.
// ============================================================
// *********************************************************************
// special settings
// *********************************************************************
// enable this line when you are not usigng a standard arduino
// for example when your chip is an ESP or a STM or SAM or something else
#define _LCDML_cfg_use_ram 

  // include libs
  #include <LCDMenuLib2.h>
  #include <ESP8266WiFi.h>
  #include <PubSubClient.h>
  #include <ArduinoOTA.h>
  #include <stdlib.h>
  
  // U8g2lib
  #include <Arduino.h>
  #include <U8g2lib.h>

  #ifdef U8X8_HAVE_HW_SPI
  #include <SPI.h>
  #endif
  #ifdef U8X8_HAVE_HW_I2C
  #include <Wire.h>
  #endif

  // WiFi
  const char *ssid = "whataday"; // Enter your WiFi name
  const char *password = "djfkddk";  // Enter WiFi password

  // MQTT Broker
  const char *mqtt_broker = "192.168.0.26";
  const char *pump = "cmnd/75gpumps/power";
  const char *power_head = "cmnd/75gpumps/power2";
  const char *protein_skimmer = "cmnd/75gpumps/power3";
  const char *uv = "cmnd/75gpumps/power4";
  const char *ligths = "cmnd/75glights/power1";
  const char *ato = "cmnd/75gdosingpumps/power5";
  const char *feed = "cmnd/hass/feedmode";
  const char *hass = "cmnd/hass/hass";
  const char *temp = "cmnd/tank1/temp";
  const char *atom = "cmnd/tank1/atom";
  const char *atofill = "cmnd/hass/atof";
  const char *mqtt_username = "djfkd";
  const char *mqtt_password = "d,kd,";
  const int mqtt_port = 1883;
  int buttonState = 0;
  const int buttonPin = 2;
  
  
  

  


  WiFiClient espClient;
  PubSubClient client(espClient);

// *********************************************************************
// U8GLIB
// *********************************************************************
  // U8g2 Constructor List (Frame Buffer)
  // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
  // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
  U8G2_ST7920_128X64_F_SW_SPI u8g2(U8G2_R0, 14, 13, 15, U8X8_PIN_NONE);
  //U8G2_ST7920_128X64_F_HW_SPI u8g2(U8G2_R0, /* CS=*/ 12, /* reset=*/ U8X8_PIN_NONE);   // (Uno and co

  // settings for u8g lib and LCD
  #define _LCDML_DISP_w                 128            // LCD width
  #define _LCDML_DISP_h                 64             // LCD height
  // font settings
  #define _LCDML_DISP_font              u8g_font_6x13  // u8glib font (more fonts under u8g.h line 1520 ...)
  #define _LCDML_DISP_font_w            6              // font width
  #define _LCDML_DISP_font_h            13             // font height
  // cursor settings
  #define _LCDML_DISP_cursor_char       "X"            // cursor char
  #define _LCDML_DISP_cur_space_before  2              // cursor space between
  #define _LCDML_DISP_cur_space_behind  4              // cursor space between
  // menu position and size
  #define _LCDML_DISP_box_x0            0              // start point (x0, y0)
  #define _LCDML_DISP_box_y0            0              // start point (x0, y0)
  #define _LCDML_DISP_box_x1            128            // width x  (x0 + width)
  #define _LCDML_DISP_box_y1            64             // hight y  (y0 + height)
  #define _LCDML_DISP_draw_frame        1              // draw a box around the menu
   // scrollbar width
  #define _LCDML_DISP_scrollbar_w       10  // scrollbar width (if this value is < 3, the scrollbar is disabled)

  // nothing change here
  #define _LCDML_DISP_cols_max          ((_LCDML_DISP_box_x1-_LCDML_DISP_box_x0)/_LCDML_DISP_font_w)
  #define _LCDML_DISP_rows_max          ((_LCDML_DISP_box_y1-_LCDML_DISP_box_y0-((_LCDML_DISP_box_y1-_LCDML_DISP_box_y0)/_LCDML_DISP_font_h))/_LCDML_DISP_font_h)

  // rows and cols
  // when you use more rows or cols as allowed change in LCDMenuLib.h the define "_LCDML_DISP_cfg_max_rows" and "_LCDML_DISP_cfg_max_string_length"
  // the program needs more ram with this changes
  #define _LCDML_DISP_rows              _LCDML_DISP_rows_max  // max rows
  #define _LCDML_DISP_cols              20                   // max cols



// *********************************************************************
// Prototypes
// *********************************************************************
  void lcdml_menu_display();
  void lcdml_menu_clear();
  void lcdml_menu_control();
  
  

// *********************************************************************
// Objects
// *********************************************************************
  LCDMenuLib2_menu LCDML_0 (255, 0, 0, NULL, NULL); // root menu element (do not change)
  LCDMenuLib2 LCDML(LCDML_0, _LCDML_DISP_rows, _LCDML_DISP_cols, lcdml_menu_display, lcdml_menu_clear, lcdml_menu_control);


// *********************************************************************
// LCDML MENU/DISP
// *********************************************************************
  // LCDML_0        => layer 0
  // LCDML_0_X      => layer 1
  // LCDML_0_X_X    => layer 2
  // LCDML_0_X_X_X  => layer 3
  // LCDML_0_...      => layer ...

  // For beginners
  // LCDML_add(id, prev_layer, new_num, lang_char_array, callback_function)
  LCDML_add         (0 , LCDML_0           , 1  , "The Panel"    ,  mFunc_feed);
  LCDML_add         (1  , LCDML_0          , 2  , "ReturnPump"   , NULL);       // this menu function can be found on "LCDML_display_menuFunction" tab
  LCDML_add         (2  , LCDML_0_2        , 1  , "OFF"          , mFunc_pumpoff);
  LCDML_add         (3  , LCDML_0_2        , 2  , "ON"           , mFunc_pump);
  LCDML_add         (4  , LCDML_0_2        , 3  , "ReturnPump"   , mFunc_goToRootMenu);
  LCDML_add         (5  , LCDML_0          , 3  , "PowerHead"    , NULL);        // this menu function can be found on "LCDML_display_menuFunction" tab
  LCDML_add         (6  , LCDML_0_3        , 1  , "OFF"          , mFunc_phoff);
  LCDML_add         (7  , LCDML_0_3        , 2  , "ON"           , mFunc_ph);
  LCDML_add         (8  , LCDML_0_3        , 3  , "PowerHead"    , mFunc_goToRootMenu);
  LCDML_add         (9  , LCDML_0          , 4  , "ProteinSkimmer",  NULL);  
  LCDML_add         (10 , LCDML_0_4        , 1  , "Toggle"       , mFunc_pstoggle);
  LCDML_add         (11 , LCDML_0_4        , 2  , "OFF"          , mFunc_psoff);
  LCDML_add         (12 , LCDML_0_4        , 3  , "ON"           , mFunc_ps);
  LCDML_add         (13 , LCDML_0_4        , 4  , "ProteinSkimmer", mFunc_goToRootMenu);
  LCDML_add         (14 , LCDML_0          , 5  , "ATO"          ,  NULL);                    // NULL = no menu function
  LCDML_add         (15 , LCDML_0_5        , 1  , "OFF"          , mFunc_atooff);
  LCDML_add         (16 , LCDML_0_5        , 2  , "ON"           , mFunc_ato);
  LCDML_add         (17 , LCDML_0_5        , 3  , "ATO"          , mFunc_goToRootMenu);
  LCDML_add         (18 , LCDML_0          , 6  , "Ligths"       ,  NULL); 
  LCDML_add         (19 , LCDML_0_6        , 1  , "OFF"          , mFunc_loff);
  LCDML_add         (20 , LCDML_0_6        , 2  , "ON"           , mFunc_l);
  LCDML_add         (21 , LCDML_0_6        , 3  , "Ligths"       , mFunc_goToRootMenu);
  LCDML_add         (22 , LCDML_0          , 7  , "Control All"  ,  NULL);
  LCDML_add         (23 , LCDML_0_7        , 1  , "OFF"          , mFunc_off);
  LCDML_add         (24 , LCDML_0_7        , 2  , "ON"           , mFunc_on);
  LCDML_add         (25 , LCDML_0_7        , 3  , "ATOFill"      , mFunc_atofill);
  LCDML_add         (26 , LCDML_0_7        , 4  , "Restart"      ,  mFunc_restart);
  LCDML_add         (27 , LCDML_0_7        , 5  , "Control All"  ,  mFunc_goToRootMenu);


  // Advanced menu (for profit) part with more settings
  // Example for one function and different parameters
  // It is recommend to use parameters for switching settings like, (small drink, medium drink, big drink) or (200ml, 400ml, 600ml, 800ml) ...
  // the parameter change can also be released with dynParams on the next example
  // LCDMenuLib_addAdvanced(id, prev_layer,     new_num, condition,   lang_char_array, callback_function, parameter (0-255), menu function type  )
  //LCDML_addAdvanced (16 , LCDML_0         , 5  , NULL,          "Parameter"      , NULL,                0,            _LCDML_TYPE_default);                    // NULL = no menu function
  //LCDML_addAdvanced (17 , LCDML_0_5       , 1  , NULL,          "Parameter 1"      , mFunc_para,       10,            _LCDML_TYPE_default);                    // NULL = no menu function
 // LCDML_addAdvanced (18 , LCDML_0_5       , 2  , NULL,          "Parameter 2"      , mFunc_para,       20,            _LCDML_TYPE_default);                    // NULL = no menu function
 // LCDML_addAdvanced (19 , LCDML_0_5       , 3  , NULL,          "Parameter 3"      , mFunc_para,       30,            _LCDML_TYPE_default);                    // NULL = no menu function
  //LCDML_add         (20 , LCDML_0_5       , 4  , "Back"             , mFunc_back);              // this menu function can be found on "LCDML_display_menuFunction" tab


  // Example for dynamic content
  // 1. set the string to ""
  // 2. use type  _LCDML_TYPE_dynParam   instead of    _LCDML_TYPE_default
  // this function type can not be used in combination with different parameters
  // LCDMenuLib_addAdvanced(id, prev_layer,     new_num, condition,   lang_char_array, callback_function, parameter (0-255), menu function type  )
  LCDML_addAdvanced (29 , LCDML_0         , 10  , NULL,          ""                  , mDyn_para,                0,   _LCDML_TYPE_dynParam);                     // NULL = no menu function points different tab where i want my temp to go 

  // Example for conditions (for example for a screensaver)
  // 1. define a condition as a function of a boolean type -> return false = not displayed, return true = displayed
  // 2. set the function name as callback (remove the braces '()' it gives bad errors)
  // LCDMenuLib_addAdvanced(id, prev_layer,     new_num, condition,   lang_char_array, callback_function, parameter (0-255), menu function type  )
  LCDML_addAdvanced (28 , LCDML_0         , 9  , COND_hide,  "screensaver"        , mFunc_screensaver,        0,   _LCDML_TYPE_default);       // this menu function can be found on "LCDML_display_menuFunction" tab

  // ***TIP*** Try to update _LCDML_DISP_cnt when you add a menu element.

  // menu element count - last element id
  // this value must be the same as the last menu element
  #define _LCDML_DISP_cnt    29

  // create menu
  LCDML_createMenu(_LCDML_DISP_cnt);




// *********************************************************************
// SETUP
// *********************************************************************
  void setup()
  {
    u8g2.begin();
    ArduinoOTA.begin();
    // serial init; only be needed if serial control is used
    Serial.begin(115200);                // start serial
    Serial.println(F(_LCDML_VERSION)); // only for examples
    pinMode(12, OUTPUT);
    pinMode(buttonPin, INPUT);
    // LCDMenuLib Setup
    LCDML_setup(_LCDML_DISP_cnt);
    
    // Enable Menu Rollover
    LCDML.MENU_enRollover();

    // Enable Screensaver (screensaver menu function, time to activate in ms)
    LCDML.SCREEN_enable(mFunc_screensaver, 10000); // set to 10 seconds
    //LCDML.SCREEN_disable();

    // Some needful methods

    // You can jump to a menu function from anywhere with
    //LCDML.OTHER_jumpToFunc(mFunc_p2); // the parameter is the function name
  
 // connecting to a WiFi network
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.println("Connecting to WiFi..");
  }
  Serial.println("Connected to the WiFi network");
  //connecting to a mqtt broker
  client.setServer(mqtt_broker, mqtt_port);
  client.setCallback(callback);
  while (!client.connected()) {
      String client_id = "esp8266-client-";
      client_id += String(WiFi.macAddress());
      Serial.printf("The client %s connects to the public mqtt broker\n", client_id.c_str());
      if (client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {
          Serial.println("Public emqx mqtt broker connected");
      } else {
          Serial.print("failed with state ");
          Serial.print(client.state());
          delay(2000);
      }
  }
  // publish and subscribe
  //client.publish(topic, "on");
  client.subscribe(hass);
}

void(* resetFunc) (void) = 0;//declare reset function at address 0
void callback(char *topic, byte *payload,  unsigned int length) {
  Serial.print("Message arrived in topic: ");
  Serial.println(topic);
  Serial.print("Message:"); 
  
  
  Serial.println();
  Serial.println("-----------------------");
  
  

  if ((char)payload[0] == '1') {
    digitalWrite(12, HIGH);   // Turn the LED on (Note that LOW is the voltage level
    // but actually the LED is on; this is because
    // it is active low on the ESP-01)
  } else {
    digitalWrite(12    , LOW);  // Turn the LED off by making the voltage HIGH
    u8g2.drawStr( 0, (_LCDML_DISP_font_h * 1), "screen");

  }


  
}



// *********************************************************************
// LOOP
// *********************************************************************
  void loop()
  {
    // this function must called here, do not delete it
    LCDML.loop();
    client.loop();
    ArduinoOTA.handle();
buttonState = digitalRead(buttonPin);
    if (buttonState == LOW) {
    // turn LED on:
    client.publish(hass, "off");
    
  }
  
   }


// *********************************************************************
// check some errors - do not change here anything
// *********************************************************************
# if(_LCDML_glcd_tft_box_x1 > _LCDML_glcd_tft_w)
# error _LCDML_glcd_tft_box_x1 is to big
# endif

# if(_LCDML_glcd_tft_box_y1 > _LCDML_glcd_tft_h)
# error _LCDML_glcd_tft_box_y1 is to big
# endif
the second tab
void mDyn_para(uint8_t line){
 u8g2.drawStr( _LCDML_DISP_box_x0+_LCDML_DISP_font_w + _LCDML_DISP_cur_space_behind, (_LCDML_DISP_font_h * (1+line)), "88");
}
2

Welcome to the forum

In order to display the payload you need to get it into the form of a C style string, ie a zero terminated array of chars

This is how I do it

void callback(char* reportTopic, byte* payload, unsigned int length)
{
  char messageBuffer[30];  //an array to hold the payload string
  memcpy(messageBuffer, payload, length);  //copy payload to array of chars
  messageBuffer[length] = '\0';  //add the zero termination
}

The MQTT message is put into the messagBuffer array and the zero termination is added to turn it into a string. You can then do whatever you want with the string, such as printing it to Serial or a screen

Note that in this example the messageBuffer array is local to the callback() function. You might like to make it global so that it is accessible to other functions

If you really, really, really want to you could turn it into a String but I chose not to in order to preserve memory

3

I did what you said done some looking around based off what you recommend but I keep getting compilation errors this is how I have to print since the menu library I use, all text are in tabs that move

void mDyn_para(uint8_t line){
 u8g2.drawStr( _LCDML_DISP_box_x0+_LCDML_DISP_font_w + _LCDML_DISP_cur_space_behind, (_LCDML_DISP_font_h * (1+line)), "88");
}

how would you go about this
here's my GitHub so have a better reference with all tabs and thank you

4

Whereabouts in that line of code are you printing the MQTT payload ?

Please post the full error message that it produces

5 
void mDyn_para(uint8_t line){
 u8g2.drawStr( _LCDML_DISP_box_x0+_LCDML_DISP_font_w + _LCDML_DISP_cur_space_behind, (_LCDML_DISP_font_h * (1+line)), buffer[0], HEX);
}

Compilation error: no matching function for call to 'U8G2_ST7920_128X64_F_SW_SPI::drawStr(int, int, byte&, int)'

6 
U8G2_ST7920_128X64_F_SW_SPI::drawStr(int, int, byte&, int)

The drawStr() function takes 3 parameters. They are x, y and the string to be printed. You are passing 4 parameters

7

they are there if i replace just buffer[30], HEX and do "what ever text i want" it prints where it supposed to be

8

if i remove the comma HEX i get Compilation error: invalid conversion from 'byte' {aka 'unsigned char'} to 'const char*' [-fpermissive]

9

You need to pass a pointer to buffer to the function not the contents of buffer[0]

void mDyn_para(uint8_t line){
 u8g2.drawStr( _LCDML_DISP_box_x0+_LCDML_DISP_font_w + _LCDML_DISP_cur_space_behind, (_LCDML_DISP_font_h * (1+line)), buffer);
}
10

that puts out the same Compilation error: invalid conversion from 'byte*' {aka 'unsigned char*'} to 'const char*' [-fpermissive]

11

Just so I know what you are saying

void mDyn_para(uint8_t line){
 u8g2.drawStr( _LCDML_DISP_box_x0+_LCDML_DISP_font_w + _LCDML_DISP_cur_space_behind, (_LCDML_DISP_font_h * (1+line)), "Hello World");
}

What, if anything, does that print ?

12

yes that will print

13

Please post your full sketch that causes the error when you try to print buffer

14 
#define _LCDML_cfg_use_ram 

  // include libs
  #include <LCDMenuLib2.h>
  #include <ESP8266WiFi.h>
  #include <PubSubClient.h>
  #include <ArduinoOTA.h>
  
  // U8g2lib
  #include <Arduino.h>
  #include <U8g2lib.h>

  #ifdef U8X8_HAVE_HW_SPI
  #include <SPI.h>
  #endif
  #ifdef U8X8_HAVE_HW_I2C
  #include <Wire.h>
  #endif
  
  
  // WiFi
  const char *ssid = "whataday"; // Enter your WiFi name
  const char *password = "wowwhataday";  // Enter WiFi password

  // MQTT Broker
  const char *mqtt_broker = "192.168.0.26";
  const char *pump = "cmnd/75gpumps/power";
  const char *power_head = "cmnd/75gpumps/power2";
  const char *protein_skimmer = "cmnd/75gpumps/power3";
  const char *uv = "cmnd/75gpumps/power4";
  const char *ligths = "cmnd/75glights/power1";
  const char *ato = "cmnd/75gdosingpumps/power5";
  const char *feed = "cmnd/hass/feedmode";
  const char *hass = "cmnd/hass/hass";
  const char *atofill = "cmnd/hass/atof";
  const char *mqtt_username = "reef";
  const char *mqtt_password = "12433";
  const int mqtt_port = 1883;
  int buttonState = 0;
  const int buttonPin = 2;

  WiFiClient espClient;
  PubSubClient client(espClient);
  byte buffer[30];
// *********************************************************************
// U8GLIB
// *********************************************************************
  // U8g2 Constructor List (Frame Buffer)
  // The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
  // Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the reset pin is not connected
  U8G2_ST7920_128X64_F_SW_SPI u8g2(U8G2_R0, 14, 13, 15, U8X8_PIN_NONE);
  //U8G2_ST7920_128X64_F_HW_SPI u8g2(U8G2_R0, /* CS=*/ 12, /* reset=*/ U8X8_PIN_NONE);   // (Uno and co

  // settings for u8g lib and LCD
  #define _LCDML_DISP_w                 128            // LCD width
  #define _LCDML_DISP_h                 64             // LCD height
  // font settings
  #define _LCDML_DISP_font              u8g_font_6x13  // u8glib font (more fonts under u8g.h line 1520 ...)
  #define _LCDML_DISP_font_w            6              // font width
  #define _LCDML_DISP_font_h            13             // font height
  // cursor settings
  #define _LCDML_DISP_cursor_char       "X"            // cursor char
  #define _LCDML_DISP_cur_space_before  2              // cursor space between
  #define _LCDML_DISP_cur_space_behind  4              // cursor space between
  // menu position and size
  #define _LCDML_DISP_box_x0            0              // start point (x0, y0)
  #define _LCDML_DISP_box_y0            0              // start point (x0, y0)
  #define _LCDML_DISP_box_x1            128            // width x  (x0 + width)
  #define _LCDML_DISP_box_y1            64             // hight y  (y0 + height)
  #define _LCDML_DISP_draw_frame        1              // draw a box around the menu
   // scrollbar width
  #define _LCDML_DISP_scrollbar_w       10  // scrollbar width (if this value is < 3, the scrollbar is disabled)

  // nothing change here
  #define _LCDML_DISP_cols_max          ((_LCDML_DISP_box_x1-_LCDML_DISP_box_x0)/_LCDML_DISP_font_w)
  #define _LCDML_DISP_rows_max          ((_LCDML_DISP_box_y1-_LCDML_DISP_box_y0-((_LCDML_DISP_box_y1-_LCDML_DISP_box_y0)/_LCDML_DISP_font_h))/_LCDML_DISP_font_h)

  // rows and cols
  // when you use more rows or cols as allowed change in LCDMenuLib.h the define "_LCDML_DISP_cfg_max_rows" and "_LCDML_DISP_cfg_max_string_length"
  // the program needs more ram with this changes
  #define _LCDML_DISP_rows              _LCDML_DISP_rows_max  // max rows
  #define _LCDML_DISP_cols              20                   // max cols



// *********************************************************************
// Prototypes
// *********************************************************************
  void lcdml_menu_display();
  void lcdml_menu_clear();
  void lcdml_menu_control();


// *********************************************************************
// Objects
// *********************************************************************
  LCDMenuLib2_menu LCDML_0 (255, 0, 0, NULL, NULL); // root menu element (do not change)
  LCDMenuLib2 LCDML(LCDML_0, _LCDML_DISP_rows, _LCDML_DISP_cols, lcdml_menu_display, lcdml_menu_clear, lcdml_menu_control);


// *********************************************************************
// LCDML MENU/DISP
// *********************************************************************
  // LCDML_0        => layer 0
  // LCDML_0_X      => layer 1
  // LCDML_0_X_X    => layer 2
  // LCDML_0_X_X_X  => layer 3
  // LCDML_0_...      => layer ...

  // For beginners
  // LCDML_add(id, prev_layer, new_num, lang_char_array, callback_function)
  LCDML_add         (0 , LCDML_0           , 1  , "The Panel"    ,  mFunc_feed);
  LCDML_add         (1  , LCDML_0          , 2  , "ReturnPump"   , NULL);       // this menu function can be found on "LCDML_display_menuFunction" tab
  LCDML_add         (2  , LCDML_0_2        , 1  , "OFF"          , mFunc_pumpoff);
  LCDML_add         (3  , LCDML_0_2        , 2  , "ON"           , mFunc_pump);
  LCDML_add         (4  , LCDML_0_2        , 3  , "ReturnPump"   , mFunc_goToRootMenu);
  LCDML_add         (5  , LCDML_0          , 3  , "PowerHead"    , NULL);        // this menu function can be found on "LCDML_display_menuFunction" tab
  LCDML_add         (6  , LCDML_0_3        , 1  , "OFF"          , mFunc_phoff);
  LCDML_add         (7  , LCDML_0_3        , 2  , "ON"           , mFunc_ph);
  LCDML_add         (8  , LCDML_0_3        , 3  , "PowerHead"    , mFunc_goToRootMenu);
  LCDML_add         (9  , LCDML_0          , 4  , "ProteinSkimmer",  NULL);  
  LCDML_add         (10 , LCDML_0_4        , 1  , "Toggle"       , mFunc_pstoggle);
  LCDML_add         (11 , LCDML_0_4        , 2  , "OFF"          , mFunc_psoff);
  LCDML_add         (12 , LCDML_0_4        , 3  , "ON"           , mFunc_ps);
  LCDML_add         (13 , LCDML_0_4        , 4  , "ProteinSkimmer", mFunc_goToRootMenu);
  LCDML_add         (14 , LCDML_0          , 5  , "ATO"          ,  NULL);                    // NULL = no menu function
  LCDML_add         (15 , LCDML_0_5        , 1  , "OFF"          , mFunc_atooff);
  LCDML_add         (16 , LCDML_0_5        , 2  , "ON"           , mFunc_ato);
  LCDML_add         (17 , LCDML_0_5        , 3  , "ATO"          , mFunc_goToRootMenu);
  LCDML_add         (18 , LCDML_0          , 6  , "Ligths"       ,  NULL); 
  LCDML_add         (19 , LCDML_0_6        , 1  , "OFF"          , mFunc_loff);
  LCDML_add         (20 , LCDML_0_6        , 2  , "ON"           , mFunc_l);
  LCDML_add         (21 , LCDML_0_6        , 3  , "Ligths"       , mFunc_goToRootMenu);
  LCDML_add         (22 , LCDML_0          , 7  , "Control All"  ,  NULL);
  LCDML_add         (23 , LCDML_0_7        , 1  , "OFF"          , mFunc_off);
  LCDML_add         (24 , LCDML_0_7        , 2  , "ON"           , mFunc_on);
  LCDML_add         (25 , LCDML_0_7        , 3  , "ATOFill"      , mFunc_atofill);
  LCDML_add         (26 , LCDML_0_7        , 4  , "Restart"      ,  mFunc_restart);
  LCDML_add         (27 , LCDML_0_7        , 5  , "Control All"  ,  mFunc_goToRootMenu);


  // Advanced menu (for profit) part with more settings
  // Example for one function and different parameters
  // It is recommend to use parameters for switching settings like, (small drink, medium drink, big drink) or (200ml, 400ml, 600ml, 800ml) ...
  // the parameter change can also be released with dynParams on the next example
  // LCDMenuLib_addAdvanced(id, prev_layer,     new_num, condition,   lang_char_array, callback_function, parameter (0-255), menu function type  )
  //LCDML_addAdvanced (16 , LCDML_0         , 5  , NULL,          "Parameter"      , NULL,                0,            _LCDML_TYPE_default);                    // NULL = no menu function
  //LCDML_addAdvanced (17 , LCDML_0_5       , 1  , NULL,          "Parameter 1"      , mFunc_para,       10,            _LCDML_TYPE_default);                    // NULL = no menu function
 // LCDML_addAdvanced (18 , LCDML_0_5       , 2  , NULL,          "Parameter 2"      , mFunc_para,       20,            _LCDML_TYPE_default);                    // NULL = no menu function
 // LCDML_addAdvanced (19 , LCDML_0_5       , 3  , NULL,          "Parameter 3"      , mFunc_para,       30,            _LCDML_TYPE_default);                    // NULL = no menu function
  //LCDML_add         (20 , LCDML_0_5       , 4  , "Back"             , mFunc_back);              // this menu function can be found on "LCDML_display_menuFunction" tab


  // Example for dynamic content
  // 1. set the string to ""
  // 2. use type  _LCDML_TYPE_dynParam   instead of    _LCDML_TYPE_default
  // this function type can not be used in combination with different parameters
  // LCDMenuLib_addAdvanced(id, prev_layer,     new_num, condition,   lang_char_array, callback_function, parameter (0-255), menu function type  )
  LCDML_addAdvanced (29 , LCDML_0         , 10  , NULL,          ""                  , mDyn_para,                0,   _LCDML_TYPE_dynParam);                     // NULL = no menu function

  // Example for conditions (for example for a screensaver)
  // 1. define a condition as a function of a boolean type -> return false = not displayed, return true = displayed
  // 2. set the function name as callback (remove the braces '()' it gives bad errors)
  // LCDMenuLib_addAdvanced(id, prev_layer,     new_num, condition,   lang_char_array, callback_function, parameter (0-255), menu function type  )
  LCDML_addAdvanced (28 , LCDML_0         , 9  , COND_hide,  "screensaver"        , mFunc_screensaver,        0,   _LCDML_TYPE_default);       // this menu function can be found on "LCDML_display_menuFunction" tab

  // ***TIP*** Try to update _LCDML_DISP_cnt when you add a menu element.

  // menu element count - last element id
  // this value must be the same as the last menu element
  #define _LCDML_DISP_cnt    29

  // create menu
  LCDML_createMenu(_LCDML_DISP_cnt);




// *********************************************************************
// SETUP
// *********************************************************************
  void setup()
  {
    u8g2.begin();
    ArduinoOTA.begin();
    // serial init; only be needed if serial control is used
    Serial.begin(115200);                // start serial
    Serial.println(F(_LCDML_VERSION)); // only for examples
    pinMode(12, OUTPUT);
    pinMode(buttonPin, INPUT);
    // LCDMenuLib Setup
    LCDML_setup(_LCDML_DISP_cnt);
    
    // Enable Menu Rollover
    LCDML.MENU_enRollover();

    // Enable Screensaver (screensaver menu function, time to activate in ms)
    LCDML.SCREEN_enable(mFunc_screensaver, 10000); // set to 10 seconds
    //LCDML.SCREEN_disable();

    // Some needful methods

    // You can jump to a menu function from anywhere with
    //LCDML.OTHER_jumpToFunc(mFunc_p2); // the parameter is the function name
  
 // connecting to a WiFi network
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.println("Connecting to WiFi..");
  }
  Serial.println("Connected to the WiFi network");
  //connecting to a mqtt broker
  client.setServer(mqtt_broker, mqtt_port);
  client.setCallback(callback);
  while (!client.connected()) {
      String client_id = "esp8266-client-";
      client_id += String(WiFi.macAddress());
      Serial.printf("The client %s connects to the public mqtt broker\n", client_id.c_str());
      if (client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {
          Serial.println("Public emqx mqtt broker connected");
      } else {
          Serial.print("failed with state ");
          Serial.print(client.state());
          delay(2000);
      }
  }
  // publish and subscribe
  //client.publish(topic, "on");
  client.subscribe(hass);
}
void(* resetFunc) (void) = 0;//declare reset function at address 0
void callback(char* reportTopic, byte* payload, unsigned int length)
{
  char messageBuffer[30];  //an array to hold the payload string
  memcpy(messageBuffer, payload, length);  //copy payload to array of chars
  messageBuffer[length] = '\0';  //add the zero termination
  
  
}



// *********************************************************************
// LOOP
// *********************************************************************
  void loop()
  {
    // this function must called here, do not delete it
    LCDML.loop();
    client.loop();
    ArduinoOTA.handle();
buttonState = digitalRead(buttonPin);
    if (buttonState == LOW) {
    // turn LED on:
    client.publish(hass, "off");
    delay(1500);
    
  }
   }


// *********************************************************************
// check some errors - do not change here anything
// *********************************************************************
# if(_LCDML_glcd_tft_box_x1 > _LCDML_glcd_tft_w)
# error _LCDML_glcd_tft_box_x1 is to big
# endif

# if(_LCDML_glcd_tft_box_y1 > _LCDML_glcd_tft_h)
# error _LCDML_glcd_tft_box_y1 is to big
# endif
15

That sketch does not call the drawStr() function and even if it did, it is the buffer that you put the payload in that you need to output and its name is not buffer but messageBuffer

Not too

16

drawStr() is in different tab GitHub - aaronfortner/esp8266_tankmenu github with all 6 tabs

17

Did you note what I said about printing messageBuffer instead of buffer and have you tried that ?

18

Compilation error: 'messageBuffer' was not declared in this scope

19

Sigh....

Did you read this (posted twice)

20

yes, i look in to making messageBuffer array to global yesterday all i know about doing that is from this, i look at people different project ever one seems to do it differently cant get then to work in my code would you have a example