Wifi Energy monitor !  With ESP 32 Wroom ! 

/*  

 Test the tft.print() viz the libraries embedded write() function

 This sketch used font 2, 4, 7

 Make sure all the required fonts are loaded by editing the

 User_Setup.h file in the TFT_eSPI library folder.

  #########################################################################

  ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######

  #########################################################################

 */

#include "EspMQTTClient.h"

#include <WiFi.h>

//#include "Free_Fonts.h"

#include <SPI.h>

#include <TFT_eSPI.h> // Hardware-specific library

TFT_eSPI tft = TFT_eSPI();       // Invoke custom library

const uint8_t MESG_SIZE = 255;

char curMessage1[MESG_SIZE];

char newMessage1[MESG_SIZE];

char curMessage2[MESG_SIZE];

char newMessage2[MESG_SIZE];

char curMessage3[MESG_SIZE];

char newMessage3[MESG_SIZE];

char curMessage4[MESG_SIZE];

char newMessage4[MESG_SIZE];

char curMessage5[MESG_SIZE];

char newMessage5[MESG_SIZE];

char curMessage6[MESG_SIZE];

char newMessage6[MESG_SIZE];

bool newMessageAvailable = false;

EspMQTTClient client(

  "Tenda_Spike",

  "johanveerle22",

  "192.168.1.19",  // MQTT Broker server ip

  "spike",   // Can be omitted if not needed

  "1234",   // Can be omitted if not needed

  "ILI",     // Client name that uniquely identify your device

  1883            // The MQTT port, default to 1883. this line can be omitted

);

void setup(void) {

 Serial.begin(115200);

curMessage1[0] = newMessage1[0] = '\0';

curMessage2[0] = newMessage2[0] = '\0';

curMessage3[0] = newMessage3[0] = '\0';

curMessage4[0] = newMessage4[0] = '\0';

curMessage5[0] = newMessage5[0] = '\0';

curMessage6[0] = newMessage6[0] = '\0';

  sprintf(curMessage1, "");

  sprintf(curMessage2, "");

sprintf(curMessage3, " 000  ");

sprintf(curMessage4, " 000 ");

sprintf(curMessage5, " 000 ");  

  sprintf(curMessage6, " 000 ");

  tft.init();

  tft.setRotation(3);

   tft.fillScreen(TFT_BLACK);

 tft.fillRoundRect(0, 0, 480, 28, 10, TFT_YELLOW);

 tft.fillRoundRect(20, 40, 210, 54, 10, TFT_BLUE);

tft.fillRoundRect(240, 40, 210, 54, 10, TFT_WHITE);

 tft.fillRoundRect(0, 98, 480, 28, 10, TFT_GREEN);

 WiFi.mode(WIFI_STA);

/*

tft.fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color)

Parameterd:

x0：x coordinate of the starting point

y0：y coordinate of the starting point

w：the length of the square

h：the width of the square

radius：the radius of the round corners

color：the color of the square

   */

}

void onConnectionEstablished()

{

  client.subscribe("leddisplay6/text", [](const String & payload) {  //naam van de gegevens uit node red

  sprintf(curMessage1, payload.c_str());

 });

    client.subscribe("leddisplay5/text", [](const String & payload) {

  sprintf(curMessage2, payload.c_str());

  });

  client.subscribe("leddisplay10/soc", [](const String & payload) {

  sprintf(curMessage3, payload.c_str());

 });

    client.subscribe("leddisplay11/text", [](const String & payload) {

  sprintf(curMessage4, payload.c_str());

 });

      client.subscribe("leddisplay12/text", [](const String & payload) {

  sprintf(curMessage5, payload.c_str());

  });

    client.subscribe("leddisplay13/text", [](const String & payload) {

  sprintf(curMessage6, payload.c_str());

  });

}

void loop() {

client.loop();

  tft.setCursor(100, 2);  

 tft.setTextColor(TFT_BLACK);

  tft.setTextFont(4);

    tft.println("Energy Monitor     NET");

tft.setCursor(40, 44);  

 tft.setTextColor(TFT_GREEN,TFT_BLUE);

//  tft.setTextColor(TFT_GREEN);

  tft.setTextFont(7);

 // tft.println("      ");

//  tft.setCursor(40, 44);

  tft.println(curMessage1);

   tft.setCursor(250, 44);  

 tft.setTextColor(TFT_RED, TFT_WHITE);    

 // tft.setTextFont(3);

  tft.println(curMessage2);

  // Set the font colour to be green with black background, set to font 4

  tft.setTextFont(2);

  tft.setTextColor(TFT_GREEN);

 tft.setCursor(30, 26);  

    tft.print("Export naar Net");

 tft.setTextColor(TFT_WHITE);

 tft.setCursor(270, 26);  

    tft.print("Import van Net");

 //tft.setTextColor(TFT_BLACK,TFT_GREEN);

  tft.setTextColor(TFT_BLACK);

tft.setCursor(85, 100);

  tft.setTextFont(4);

    tft.println("Energy Monitor     BATTERY");

tft.setTextColor(TFT_GREEN,TFT_BLACK);

 tft.setTextFont(7);

tft.setCursor(0, 160);  

  tft.println(curMessage3);   //soc

tft.setCursor(0, 250);  

  tft.println(curMessage6);    //Spanning

 tft.setCursor(240, 160);    

tft.println(curMessage5);     // Stroom

tft.setCursor(240, 250);    

  tft.println(curMessage4);    // Power

// info text bij berichten

tft.setTextColor(TFT_WHITE,TFT_BLACK);

 tft.setTextFont(4);

 tft.setCursor(0, 130);  

tft.println("SOC = %");

tft.setCursor(240, 130);  

tft.println("Spanning = Volt ");

 tft.setCursor(0, 220);  

tft.println("Stroom = Amp");

tft.setCursor(240, 220);  

tft.println("Power = Watt");

 //serial info  

  Serial.println(curMessage1);

   Serial.println(curMessage2);

 Serial.println(curMessage3);

   Serial.println(curMessage4);

     Serial.println(curMessage5);

  Serial.println(curMessage6);

  tft.setTextFont(1);

  tft.setTextColor(TFT_WHITE);

 tft.setCursor(0, 310);  

    tft.print("ip=");

  delay(500);

}