Nextion

espruino lib for the Nextion HMI display

Copyright (c) 2016 HyGy. See the file LICENSE for copying permission.

This is a basic nextion hmi lcd handling module. Tested with NX3224T028_011R 2.8” 320*240 LCD. http://wiki.iteadstudio.com/Nextion_HMI_Solution

How to initialize the lib:

This is tested on ESP8266. You need to connect the ESP8266 trough network console. Serial console is needed for the nextion lcd.

Serial1.setup(9600);
var nextion=require('Nextion');
nextion.connect(Serial1);

recived events

touch event:

nextion.on(
  'touchevent',
  function(pageId, componentId, touchType)
  {
    console.log('touch event');
    console.log(pageId);
    console.log(componentId);
    console.log(touchType);
  }
);

getpageid

nextion.on(
  'getpageid',
  function (pageId)
  {
    console.log('getPageId-> pageId: '+pageId);
  }
);

commands to send

setPage

nextion.setPage(1);

get value

nextion.get(
  "t0.txt",
  function(data) {
    console.log("--->"+data+"<----");
  }
);

sendme -> get the current page

nextion.sendme();

get an element attributte

nextion.getAtt("t0.txt");

set value

nextion.setVal('t0.txt', "example string"); // set t0.txt value to "example string"
nextion.setVal('dim',50); // set the backlight to 50%