Change page from Arduino to Nextion

sili1234 · October 21, 2020, 3:26pm

Hi,
I have a short question. Im a noob with nextion and
I have a Arduino Mega and a Nextion display.
Now i would like to change the pages with the arduino because I destroy my tuch.
How can I make it like:
go on "page0"
delay(1000)
go on "page1"
delay(1000)
go on "page2"

HotSystems · October 21, 2020, 3:39pm

Du bist hier im deutschen Bereich des Forums.
Da darfst du gern in deutsch schreiben.

Hast du dir die Doku schon mal angesehen ?

sili1234 · October 21, 2020, 4:52pm

danke. Ich wusste nicht, dass man auch auf deutsch schreiben kann

HotSystems · October 21, 2020, 5:21pm

sili1234:
danke. Ich wusste nicht, dass man auch auf deutsch schreiben kann

Aber klar doch im deutschen Bereich klappt das.

sili1234 · October 21, 2020, 5:35pm

Noch ein.
Ich weis nicht, wie man es in das Arduinoprogramm einfügt

HotSystems · October 21, 2020, 5:42pm

sili1234:
Noch ein.
Ich weis nicht, wie man es in das Arduinoprogramm einfügt

Wie jetzt ?

Das steht doch in der Doku "Seitenbefehle-page"

Z.B. "page Name 0xff 0xff 0xff"

Ich hoffe, das hast du gemeint.

sili1234 · October 21, 2020, 5:58pm

Die Software sagt:

'page' was not declared in this scope

Tommy56 · October 21, 2020, 6:00pm

Dann solltest Du das ganze Tutorial lesen. Dir fehlen sämtliche Grundlagen.

Gruß Tommy

HotSystems · October 21, 2020, 6:04pm

sili1234:
Die Software sagt:

'page' was not declared in this scope

Welche Software ?

sili1234 · October 21, 2020, 6:05pm

ok danke ich schau mal und es ist Arduino ide

Ich habe:
*sendCommand("Rot");

Serial1.print(page + cmd + "Rot" + cmd);
Serial1.write(0xFF);
Serial1.write(0xFF);
Serial1.write(0xFF);
*page Rot 0xff 0xff 0xff
versucht, aber es geht irgendwie nicht

HotSystems · October 21, 2020, 6:29pm

sili1234:
ok danke ich schau mal und es ist Arduino ide

Du musst die Befehle ja auch an das Nextion per serieller übertragen.

Hatte verstanden du hast das Nextion schon betan, sollte ich mich da irren ?

sili1234 · October 21, 2020, 7:03pm

ich hatte schon texte oder eine processbar eingefügt aber die seiten wechseln schaffe ich immer noch nicht

Die texte übertrage ich über die zweiten seriellen schnittstellen, darum auch Serial1

HotSystems · October 21, 2020, 7:08pm

sili1234:
ich hatte schon texte oder eine processbar eingefügt aber die seiten wechseln schaffe ich immer noch nicht

Und dann bekommst du das nicht hin ?
So schwer ist das doch nicht.

Dann poste mal deinen aktuellen Sketch.
Aber den bitte in Code-Tags setzen. Schaltfläche </> oben links im Editorfenster, oder [ code] vor den Sketch und [ /code] hinter den Sketch setzen, aber ohne die Leerzeichen.

HotSystems · October 21, 2020, 8:47pm

Noch ein Tipp, weil es schon spät ist.

Bei mir sieht ein Seitenwechsel so aus:

meinSerial.print("page start");
meinSerial.write(0xFF);
meinSerial.write(0xFF);
meinSerial.write(0xFF);

sili1234 · October 23, 2020, 3:43pm

//declare pages:

#include "DHT.h"
int co2Addr = 0x68;
#include <Wire.h>

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);


void setup() 
{
  dht.begin();
  /*Serial.begin(9600);
   Serial.println("test");*/
  Serial1.begin(9600);
  Wire.begin ();
  pinMode(13, OUTPUT);
  String cmd;
  cmd += "\"";

}
int readCO2()
{
  int co2_value = 0;

  digitalWrite(13, HIGH);
  Wire.beginTransmission(co2Addr);
  Wire.write(0x22);
  Wire.write(0x00);
  Wire.write(0x08);
  Wire.write(0x2A);

  Wire.endTransmission();
  delay(10);

  Wire.requestFrom(co2Addr, 4);

  byte i = 0;
  byte buffer[4] = {0, 0, 0, 0};

  while (Wire.available())
  {
    buffer[i] = Wire.read();
    i++;
  }

  co2_value = 0;
  co2_value |= buffer[1] & 0xFF;
  co2_value = co2_value << 8;
  co2_value |= buffer[2] & 0xFF;


  byte sum = 0; //Checksum Byte
  sum = buffer[0] + buffer[1] + buffer[2]; //Byte addition utilizes overflow

  if (sum == buffer[3])
  {
    // Success!
    digitalWrite(13, LOW);
    return co2_value;
  }
  else
  {
    
    digitalWrite(13, LOW);
    return 0;
  }
}
void loop() 
{

  float Luftfeuchtigkeit = dht.readHumidity(); 
  float Temperatur = dht.readTemperature();
  String cmd;
  cmd += "\"";
  int test = Luftfeuchtigkeit;
 String output = "jlu.val=";
 output += test;
Serial1.print( output );
Serial1.write( 0xFF );
Serial1.write( 0xFF );
Serial1.write( 0xFF );
  Serial1.print("tc.txt=" + cmd + Temperatur + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tc.txt=" + cmd + Temperatur + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  sendCommand("Rot");
  delay(6000);
  Serial1.print(page + cmd + "Rot" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tc.txt=" + cmd + Temperatur + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t11.txt=" + cmd + Luftfeuchtigkeit + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t11.txt=" + cmd + Luftfeuchtigkeit + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);

int co2Value = readCO2();
if (co2Value > 0)
{
  Serial1.print("t7.txt=" + cmd + co2Value + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t7.txt=" + cmd + co2Value + cmd);
  Serial1.write(0xFF); //63488
  Serial1.write(0xFF);
  Serial1.write(0xFF);

}
else {}
if (co2Value > 800)
{
  Serial1.print("t10.txt=" + cmd + "Grenzwertig" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t10.txt=" + cmd + "Grenzwertig" + cmd);
  Serial1.write(0xFF); //63488
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t7.txt=" + cmd + co2Value + cmd);
  Serial1.write(0xFF); //63488
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t7.txt=" + cmd + co2Value + cmd);
  Serial1.write(0xFF); //63488
  Serial1.write(0xFF);
  Serial1.write(0xFF);

}
else {}
if (co2Value > 1000)
{
  Serial1.print("t10.txt=" + cmd + "! Lueften !" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t10.txt=" + cmd + "! Lueften !" + cmd);
  Serial1.write(0xFF); //63488
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t10.txt=" + cmd + "! Lueften !" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t7.txt=" + cmd + co2Value + cmd);
  Serial1.write(0xFF); //63488
  Serial1.write(0xFF);
  Serial1.write(0xFF);

}
else {}
if ( 13 < Temperatur < 20 )
{
  Serial1.print("tca.txt=" + cmd + "!" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tca.txt=" + cmd + "!" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);

  delay (2000);
}
else
{
  Serial1.print("tca.txt=" + cmd + "" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tca.txt=" + cmd + "" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  delay (2000);
}
if (Temperatur < 13 )
{
  Serial1.print("tca.txt=" + cmd + "! !" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tca.txt=" + cmd + "! !" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  delay (2000);
}
else
{  
  Serial1.print("tca.txt=" + cmd + "" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tca.txt=" + cmd + "" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  delay (2000);
}
}

Das ist mein volles Programm.

HotSystems · October 23, 2020, 5:34pm

Ok, warum hast du nicht geschrieben, das du die Nextion-Lib verwendest ?
Da ich die nicht einsetzte, kann ich ,leider keine weiteren Tipps geben.

Ich verwende die nicht, sondern steuere das Display direkt, wie du es an meinem Beispiel auch erkennen kannst.

sili1234 · October 23, 2020, 9:18pm

oh ist die noch drinnen, ich benutze sie eigentlich garnicht ich habe nur etwas ausprobiert.

sili1234 · October 25, 2020, 4:02pm

?

Tommy56 · October 25, 2020, 4:05pm

Dann zeige doch mal den Sketch, wie er nun wirklich ist.

Gruß Tommy

sili1234 · October 25, 2020, 4:24pm

#include "DHT.h"
int co2Addr = 0x68;
#include <Wire.h>

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);


void setup()
{
  dht.begin();
  /*Serial.begin(9600);
    Serial.println("test");*/
  Serial1.begin(9600);
  Wire.begin ();
  pinMode(13, OUTPUT);
  String cmd;
  cmd += "\"";

}
int readCO2()
{
  int co2_value = 0;

  digitalWrite(13, HIGH);
  Wire.beginTransmission(co2Addr);
  Wire.write(0x22);
  Wire.write(0x00);
  Wire.write(0x08);
  Wire.write(0x2A);

  Wire.endTransmission();
  delay(10);

  Wire.requestFrom(co2Addr, 4);

  byte i = 0;
  byte buffer[4] = {0, 0, 0, 0};

  while (Wire.available())
  {
    buffer[i] = Wire.read();
    i++;
  }

  co2_value = 0;
  co2_value |= buffer[1] & 0xFF;
  co2_value = co2_value << 8;
  co2_value |= buffer[2] & 0xFF;


  byte sum = 0; //Checksum Byte
  sum = buffer[0] + buffer[1] + buffer[2]; //Byte addition utilizes overflow

  if (sum == buffer[3])
  {
    // Success!
    digitalWrite(13, LOW);
    return co2_value;
  }
  else
  {

    digitalWrite(13, LOW);
    return 0;
  }
}
void loop()
{

  float Luftfeuchtigkeit = dht.readHumidity();
  float Temperatur = dht.readTemperature();
  String cmd;
  cmd += "\"";
  int test = Luftfeuchtigkeit;
  String output = "jlu.val=";
  output += test;
  Serial1.print( output );
  Serial1.write( 0xFF );
  Serial1.write( 0xFF );
  Serial1.write( 0xFF );
  Serial1.print("tc.txt=" + cmd + Temperatur + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tc.txt=" + cmd + Temperatur + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  int page;
  Serial1.print(page + cmd + "Rot" + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("page Rot");
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("tc.txt=" + cmd + Temperatur + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t11.txt=" + cmd + Luftfeuchtigkeit + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.print("t11.txt=" + cmd + Luftfeuchtigkeit + cmd);
  Serial1.write(0xFF);
  Serial1.write(0xFF);
  Serial1.write(0xFF);

  int co2Value = readCO2();
  if (co2Value > 0)
  {
    Serial1.print("t7.txt=" + cmd + co2Value + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("t7.txt=" + cmd + co2Value + cmd);
    Serial1.write(0xFF); //63488
    Serial1.write(0xFF);
    Serial1.write(0xFF);

  }
  else {}
  if (co2Value > 800)
  {
    Serial1.print("t10.txt=" + cmd + "Grenzwertig" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("t10.txt=" + cmd + "Grenzwertig" + cmd);
    Serial1.write(0xFF); //63488
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("t7.txt=" + cmd + co2Value + cmd);
    Serial1.write(0xFF); //63488
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("t7.txt=" + cmd + co2Value + cmd);
    Serial1.write(0xFF); //63488
    Serial1.write(0xFF);
    Serial1.write(0xFF);

  }
  else {}
  if (co2Value > 1000)
  {
    Serial1.print("t10.txt=" + cmd + "! Lueften !" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("t10.txt=" + cmd + "! Lueften !" + cmd);
    Serial1.write(0xFF); //63488
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("t10.txt=" + cmd + "! Lueften !" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("t7.txt=" + cmd + co2Value + cmd);
    Serial1.write(0xFF); //63488
    Serial1.write(0xFF);
    Serial1.write(0xFF);

  }
  else {}
  if ( 13 < Temperatur < 20 )
  {
    Serial1.print("tca.txt=" + cmd + "!" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("tca.txt=" + cmd + "!" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);

    delay (2000);
  }
  else
  {
    Serial1.print("tca.txt=" + cmd + "" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("tca.txt=" + cmd + "" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    delay (2000);
  }
  if (Temperatur < 13 )
  {
    Serial1.print("tca.txt=" + cmd + "! !" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("tca.txt=" + cmd + "! !" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    delay (2000);
  }
  else
  {
    Serial1.print("tca.txt=" + cmd + "" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("tca.txt=" + cmd + "" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    delay (2000);
  }


  if (Luftfeuchtigkeit < 5)
  {
    Serial1.print("jlu.val=" + cmd + "5" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.print("jlu.val=" + cmd + "5" + cmd);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
    Serial1.write(0xFF);
  }
  else {}

}

Das ist er (bearbeitet)

Topic		Replies	Views
Kommunikation Arduino Mega -----> Nextion NX8048T050_11 Deutsch	78	449	May 21, 2025
Kommunikation mit dem Nextion Display Deutsch	116	451	March 31, 2026
Nextion Display und die Tücken mit dem Senden von Informationen Deutsch	23	391	July 1, 2025
Nextion Page Number to Arduino Mega Displays	15	12545	May 6, 2021
Display Nextion con Arduino Generale	15	1763	May 7, 2021

Change page from Arduino to Nextion

Related topics