nextion_text_arduino

unsigned int data_pres = 0;
unsigned int avg = 0;

#include <movingAvg.h>
movingAvg avgPres(20);
#include <SoftwareSerial.h>
SoftwareSerial nexSerial(3, 2); // RX, TX


void setup() {
  Serial.begin(9600);
  nexSerial.begin(9600);
  pinMode(A0, INPUT);
  avgPres.begin();
  delay(1000);
}

void loop() {
  //data_pres = map(analogRead(A0),0,1024,0,255);  //Read the pot value ann map it to 0.255 (max value of waveform=255)
  tampil_text("t0", "Press(psi)");
  tampil_text("t1", "-3");
  tampil_text("t2", "-2");
  tampil_text("t3", "-1");
  tampil_text("t4", "0");
  tampil_text("t5", "1");
  tampil_text("t6", "");

  int dt_adc = analogRead(A0);
  data_pres = dt_adc*4; // scaling pressure graph
  avg = avgPres.reading(dt_adc);

  float voltage = (avg*5.0)/1024.0;

  float pressure_pascal = (3.0*((float)voltage-0.475))*1000000.0;                       //calibrate here
  float pressure_bar = pressure_pascal/10e5;
  float pressure_psi = pressure_bar*14.5038;
  pressure_psi = pressure_psi - 1;
  Serial.println(pressure_psi);


  String Tosend = "add ";
    Tosend += 1;
    Tosend += ",";
    Tosend += 0;
    Tosend += ",";
    Tosend += data_pres;
    nexSerial.print(Tosend);
    nexSerial.write(0xff);
    nexSerial.write(0xff);
    nexSerial.write(0xff);

  delay(5);
}

void tampil_text(String _add_txt, String _txt_display) {
  String buf_txt = _add_txt + ".txt="  + "\"" + _txt_display + "\"";
  nexSerial.print(buf_txt);
  nexSerial.write(0xff);
  nexSerial.write(0xff);
  nexSerial.write(0xff);
}