DCF77 Radio Time Signal

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•
werty1st
not working:
https://youtu.be/LK4eFga2P7E
working:
I think i will buy a new DCF receiver. i can get it to work but its not stable. not on the arduino nor on the espruino.
Code:
function wlan() {

  digitalWrite(B9,1); // enable on Pico Shim V2
  Serial2.setup(115200, { rx: A3, tx : A2 });
  var wifi = require("ESP8266WiFi_0v25").connect(Serial2, function(err) {
    if (err) throw err;

    wifi.reset(function(err) {
      if (err) throw err;
      console.log("Connecting to WiFi");
      wifi.getAPs(function(err, aps) {
        console.log("Scanning Aps");
        //console.log(aps);
      });

      wifi.connect("XXX","XXX", function(err) {
        if (err){
          return console.log("NO Wifi");
        }

        var myip;

        wifi.getIP(function(err, ip) {
          myip = ip;
          console.log("Connected to:",myip);
          //printscreen(myip,13);
        });


        var http = require("http");
        http.createServer(function (req, res) {

            var a = url.parse(req.url, true);

            text1 = (a.query && a.query.t1 || "");
            text2 = (a.query && a.query.t2 || "");
            
            if (a.query && (a.query.t1 || a.query.t2)){
              printscreen(text1,10);
              setTimeout(function(){printscreen(myip,13);},2500);
            }

            res.writeHead(200, {'Content-Type': 'text/html'});
            res.write('<html><head><meta name="viewport" content="width=320"/></head><body>');
            res.write('LCD Display:<input id="t1" value="'+text1+'" type="text"><br>');
            res.write('LCD Display:<input id="t2" value="'+text2+'"type="text"><br>');
            res.write('<input type="button" onclick="get()" value="senden"><br>');
            res.write('<script> function get(){var e;window.XMLHttpRequest&&(e=new XMLHttpRequest),e.onreadystatechange=function(){4==e.readyState&&200==e.status&&console.log("done")};var t=document.getElementById("t1").value,n=document.getElementById("t2").value;e.open("GET","lcd/?t1="+t+"&t2="+n,!0),e.send()} </script>');
            res.end('</body></html>');

        }).listen(80);


      });
    });
  });

}


function onInit(){
  console.log("start");
  wlan();
  oled();
}


var img2 = {
  width : 32, height : 32, bpp : 1,
  transparent : 0,
  buffer : E.toArrayBuffer(atob("AAAAAAAAeAAAf/4AH/+bAH/ABQBoAAeAaAADwHQAAf5aAfCfS/8/sUXP//1G//AdQ/wAHUAAAB1AAAAdQAAAHWAAABNgAAAeYAAAEOAAABDgAAAQ8AAAGPgAABz4AAAcfAAAnD4AP/A+B//AHz//wA///4AAP+AAABgAAAAAAAA="))
};

function image(){
  //g.clear();
  g.drawImage(img2, 96, 0);
  //g.flip();
}



var g;
function printscreen(line1,line2,size){

  if (init !== 0){
    clearTimeout(init);
    init=0;
  }
  g.clear();
  // write some text
  g.setFontVector(size);
  g.drawString(line1,2,2);
  g.drawString(line2,2,20);
  // write to the screen
  g.flip();

}

var init=0;
var step=1;
function clear(){

  var p;
  var p1=".  ";
  var p2=" . ";
  var p3="  .";
 
  if (step==1){
    p=p1;
  }
  if (step==2){
    p=p2;
  }
  if (step==3){
    p=p3;
  }
  step++;
  if (step == 4) step=1;
  
  g.clear();
  g.setFontVector(14);
  g.drawString("waiting "+p,2,4);
  
  image();
  g.flip();
  
  init=setTimeout(clear,300);
  
}

function oled(){

  digitalWrite(B4, LOW);
  digitalWrite(B4, HIGH);
  I2C2.setup({scl:B10, sda:B3});
  g = require("SSD1306").connect(I2C2, clear,{ height : 32 });

}


function DCF77(){

  // Decode 4 bits into a number
  function decode4(s) {
    return (0|s[0])*1 + (0|s[1])*2 + (0|s[2])*4 + (0|s[3])*8;
  }

  // xor all items in s and return the result (for parity checks)
  function xor(s) {
    var r = 0;
    for (var i=0;i<s.length;i++) r^=s[i];
    return r;
  }

  // decode the DCF77 time transmission
  function decode(d, callback) {
    if (xor(d.substr(21,7))!=d[28])
      return callback("Bad minutes");

    var minute = decode4(d.substr(21,4)) + decode4(d.substr(25,3))*10;
    if (xor(d.substr(29,6))!=d[35]) 
      return callback("Bad hours");

    var hour = decode4(d.substr(29,4)) + decode4(d.substr(33,2))*10;
    if (xor(d.substr(36,22))!=d[58]) 
      return callback("Bad date");

    var day = decode4(d.substr(36,4)) + decode4(d.substr(40,2))*10;
    var doy = decode4(d.substr(42,3));
    var month = decode4(d.substr(45,4)) + decode4(d.substr(49,1))*10;
    var year = decode4(d.substr(50,4)) + decode4(d.substr(54,4))*10;
    //console.log(hour+":"+minute+", "+day+"/"+month+"/"+year);

    var date = new Date(2000+year, month-1, day, hour, minute, 0, 0);
    return callback(null, date, { CEST:!!d[17], CET:!!d[18] } );
  }


  this.connect = function(dataPin, callback) {
    var dcf = {
      last : getTime(),
      bits : ""
    };

    setWatch(function (e) {  
      // Work out what bit we got
      var d = e.time-e.lastTime;
      console.log("pulsewidth:",(d*1000).toString().substring(0, 3));
      var bit = (d<0.12)?0:1;
      // if we had a 2 sec gap then it's the beginning of a minute
      if (e.time - dcf.last > 1.5) {
        decode(dcf.bits, callback);
        dcf.bits = "";
      }
      dcf.last = e.time;  
      // now add this bit of data
      dcf.bits += bit;
      if (dcf.bits.length>59)
        dcf.bits = dcf.bits.substr(-59);
    }, dataPin, { edge:"falling", repeat:true, debounce:60 });

    return dcf;
  };
}



var Clock = require("clock").Clock;
var clk=new Clock(0);


  
var dcf = new DCF77();
dcf.connect(B6, function(err, date, info) {
  if (err){
    console.log("Invalid time received: " + err);
  }else{
    console.log(date.toString(), info);
    clk.setClock(date.getTime());
  }

});


var woche = ["So","Mo","Di","Mi","Do","Fr","Sa"];

setInterval(function(){
  
  var date = clk.getDate();
  
  var weekday = date.getDay(); //0-31
  var wochentag = woche[weekday];
  
  var jahr = date.getFullYear();
  var monat = date.getMonth()+1; monat=(monat<10)?"0"+monat:monat;
  var tag = date.getDate();        tag=(tag<10)?"0"+tag:tag;
  
  var stunden = date.getHours(); stunden=(stunden<10)?"0"+stunden:stunden;
  var minute = date.getMinutes();minute=(minute<10)?"0"+minute:minute;
  var sek = date.getSeconds();   sek=(sek<10)?"0"+sek:sek;
  
  
  var s1 = wochentag+". "+tag+"."+monat+"."+jahr;
  var s2 = stunden+":"+minute+":"+sek;
  
  printscreen(s1,s2,10);
  
},1000);



save();
@Gordon thank you for help.
DCF77 Radio Time Signal

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Espruino
