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  • mDNS is working with Bonjour
    in Projects •
    Avatar for ClearMemory041063

    Latest AT document 2.0
    https://espressif.com/sites/default/files/documentation/4a-esp8266_at_instruction_set_en.pdf

    37. AT+MDNS – Set MDNS function
ESP8266 softAP mode cannot support MDNS. Please do not use special characters (for example, "."
character), or use a protocol name (for example, "http"), when defining "host_name" and
"server_name" for MDNS.
AT+WPS – Set WPS function
Example
AT+CWMODE=1
AT+WPS=1
Command AT+WPS=<enable>
Response OK
Parameter
<enable>
1 : start WPS function
0 : stop WPS function
AT+MDNS – Set MDNS function
Example AT+MDNS=1, "espressif", "iot", 8080
Command AT+MDNS=<enable>, <hostname>, <server_name>, <server_port>
Response OK
Parameter
<enable>
1 : enable MDNS function
0 : disable MDNS function
<hostname> MDNS host name
<server_name> MDNS server name
<server_port> MDNS server port

  • mDNS is working with Bonjour
    in Projects •
    Avatar for ClearMemory041063

    Using AT+GMR my ESP8266 reports the following:

    AT version:0.60.0.0(Jan 29 2016 15:10:17)
    SDK version:1.5.2(7eee54f4)

  • mDNS is working with Bonjour
    in Projects •
    Avatar for ClearMemory041063
    1. AT+MDNS – Set MDNS function
      ESP8266 softAP mode can not support MDNS. Do not contain special characters (for example, "."
      character), or use a protocol name (for example, "http"), when defining "host_name" and
      "server_name" for MDNS.
      AT+WPS – Set WPS function
      Example
      AT+CWMODE=1
      AT+WPS=1
      Command AT+WPS=
      Response OK or ERROR
      Parameter

      1 : start WPS function
      0 : stop WPS function
      AT+MDNS – Set MDNS function
      Example AT+MDNS=1, "espressif", "iot", 8080
      Command AT+MDNS=, , ,
      Response OK or ERROR
      Parameter

      1 : enable MDNS function
      0 : disable MDNS function
      MDNS host name
      MDNS server name
      MDNS server port

    http://bbs.espressif.com/viewtopic.php?t=1714
    https://cdn.sparkfun.com/assets/learn_tutorials/4/0/3/4A-ESP8266AT_Instruction_SetEN_v0.30.pdf
    https://espressif.com/en/support/download/sdks-demos
    https://espressif.com/en/support/download/overview?keys=&field_type_tid%5B%5D=14
    http://bbs.espressif.com/

  • mDNS is working with Bonjour
    in Projects •
    Avatar for ClearMemory041063

    What is mDNS?
    It gives a name to your ESP8266 server that the Apple Bonjour browser add in can use to access your server.
    https://www.youtube.com/watch?v=G_gCfi3MdoU

    In this example code I named the server “bob”.
    I downloaded and installed Bonjour from this site and installed it on my Windows 7 system.
    http://download.cnet.com/Bonjour-for-Windows/3000-18507_4-93550.html
    On the IE browser command line I enter
    “bob.local”
    Or
    http://bob.local:8080/

    //MDNS_HTTPserver1.js
//5 OCT 2016

//espruino board with ESP8266
//PICO  with ESP8266

//var Hardware=0; //Espruino board
var Hardware =1; //PICO

var SSID="ssid";
var key= "router passcode";

var Serial;
var Wifi;

// "bob" is the server name
// in IE browser with Bonjour installed
//  bob.local
//  http://bob.local:8080/

var mDNS="AT+MDNS=1,\"bob\",\"http\",8080\r\n";

function mysend(a){
  Wifi.at.cmd(a, 1000, function(d){console.log(d+"xxx");});
}

//var ddata="";
function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;

if(Hardware===1){
 digitalWrite(B9,1); // enable on Pico Shim V2
 Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board

console.log("Start connection process");
var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
  if (err)return 1;// throw err;
  Wifi=wifi;
console.log("Reset the ESP8266");
  wifi.reset(function(err) {
    if (err)return 1;// throw err;
Wifi.at.cmd("AT+CWMODE_CUR=3\r\n", 1000, function(d){console.log(d+"xx1");});
Wifi.at.cmd("AT+CIPMUX=1\r\n", 1000, function(d){console.log(d+"xx2");});
 console.log("Connecting to WiFi");
 wifi.connect(SSID,key, function(err) {
  if (err)return 1;//throw err;
  wifi.getIP(function(l,ip){
   console.log("IP= ",ip,"\n\r");
   console.log("WiFi Connected ");
   mysend(mDNS);

//HTTP or Network Server goes here
serveHTML();
////////////////////////////////////////////////////////////
     });//end wifi.getIP
    });//end wifi.connectSSID
  });//end wifi.reset
});//end wifi.connect
}//end test


function serveHTML(){
var http=require("http").createServer(onPageRequest).listen(8080);
}//end serveFile


function onPageRequest(req, res) { 
//console.log("Req= ",req);
//console.log("Header",req.headers);
if (req.method=="POST") {
  console.log("Post");
  doPost(req,res);
}else{
  doGet(req,res);
}//endif
}//end on PageRequest

var pdata="";
function doPost(req,res){
//todo
}//end doPost


//Simple Web Page
var KMtext="<html><body style=\"text-align:center;margin-left:auto;margin-right:auto;\"> \r\n<h1>mDNS Demo. bob</h1>\r\n</body> \r\n</html>  \r\n";

function doGet(req,res){
  var a = url.parse(req.url, true);
  console.log("Get");
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.write(KMtext);
    res.end("");
}

var x;
console.log("Start");
x=test();
if(x!==0)console.log("Try again");//error seen

if(x===0) console.log("Exit Seen");

    
>echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
OKxx1
OKxx2
IP=  192.168.1.3
WiFi Connected
OKxxx
Get
>

    https://en.wikipedia.org/wiki/Multicast_DNS
    Problems with older ESP8266 SDKs
    http://internetofhomethings.com/homethings/?p=426

    Update: The issues I had with the ESP8266 SDK Version 1.0 have been fixed with the Version 1.0.1 release dated 24 April 2015. And now, Version 1.1.1 has been released with even more enhancements.

  • Using UPD to find IP addresses for a TCP network in 5 parts.
    in Projects •
    Avatar for ClearMemory041063

    1. The UDP/TCP client

      //UDP_TCPclient1.js
//2 Oct 2016
//espruino board with ESP8266
//PICO  with ESP8266
//var BroadIP="255.255.255.255";
var BroadIP="192.168.1.255";
//var LocalIP;
var UDPport=1234;
var TCPport=9988;
//var Hardware=0; //Espruino board
var Hardware =1; //PICO
var SSID="ssid";
var key= "router passcode";
var Serial;
var Wifi;
function UDPmsg(a,b,c,d){
this.ClientName=a;
this.ClientIP=b;
this.ServerName=c;
this.ServerIP=d;
}
var UDP1=new UDPmsg("Bob",0,"Bill",0);
var UDP2;//=new UDPmsg("",0,"",0);
var ServerIP=0;
var ddata="";
function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;
if(Hardware===1){
digitalWrite(B9,1); // enable on Pico Shim V2
Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board
console.log("Start connection process");
var wifi = require("UDP").connect(Serial, function(err) {
if (err)return 1;// throw err;
Wifi=wifi;
console.log("Reset the ESP8266");
wifi.reset(function(err) {
if (err)return 1;// throw err;
Wifi.at.cmd("AT+CWMODE_CUR=3\r\n", 1000, function(d){console.log(d+"xx1");});
Wifi.at.cmd("AT+CIPMUX=1\r\n", 1000, function(d){console.log(d+"xx2");});
console.log("Connecting to WiFi");
wifi.connect(SSID,key, function(err) {
if (err)return 1;//throw err;
wifi.getIP(function(l,ip){console.log("IP= ",ip,"\n\r");
 UDP1.ClientIP=ip;
 console.log("Wi-Fi Connected");
// Setup UDP Client 
 wifi.SetUDP();
 var client = require("net").connect({host: BroadIP, port: UDPport,protocolVersion: 17}, function() {
  console.log('client connected');
  console.log(UDP1.ClientIP);
  client.write(JSON.stringify(UDP1));
  client.on('data', function(data) {
   ddata+=data;
    if(ddata.charAt(ddata.length-1)==='}'){
     UDP2=JSON.parse(ddata);
     console.log(">"+ddata);
     ddata="";
      if((UDP1.ClientName===UDP2.ClientName)&&       (UDP1.ServerName===UDP2.ServerName)){
       ServerIP=UDP2.ServerIP;
//HTTP or network client goes here
       menu();
      }else{
      }//endif
    }//endif ddata=}
  });//end client on data
  client.on('end', function() {
   console.log('client disconnected');
  });//client on end
  //client.end(");
 });//end client.net
});//end wif.getIP
////////////////////////////////////////////////////////////
});//end wifi.connect SSID
});//end wifi.reset
});//end wifi.connect serial
}//end test
//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
function sendit(msg){
var reply="";
Wifi.SetTCP();
var client = require("net").connect({host: ServerIP, port: TCPport}, function() {
//  console.log('client connected');
client.write(msg);
client.on('data', function(data) {
reply+=data;
console.log(">"+JSON.stringify(data));
});
client.on('end', function() {
//    console.log('client disconnected');
return reply;
});
});
}
////////////////////////////////////////////////////////////////////////
var sst="";
//Menus
menu=function(){
USB.print(" \n\r");
USB.print("Select using digit and return key\n\r");
USB.print("1 LED Off\n\r");
USB.print("2 LED On\n\r");
USB.print("0 Exit\n\r");
};
parsecmd=function(){
USB.print("\n\r");
switch(this.sst.charAt(0)){
case "1"://LED off
 sst="";
 USB.print("LED Off\n\r");
 sendit("LED Off");
break;
case "2"://LED On
 USB.print("LED On\n\r");
 sst="";
 sendit("LED On");
break;
case"0"://Exit
 LoopbackA.print("USB.setConsole();\n\r");
 sst="";
 USB.print("Exit\n\r");
break;
default:
 menu();
break;
}//end switch sst
};//end parsecmd
//input cmd from terminal,send it to parsecmd()
USB.on('data', function (data) {
var i;
sst+=data;
USB.print(data);
if(sst.length>0)
if(sst.charAt(sst.length-1)==="\r")parsecmd();
});
//Espruino replies here
LoopbackA.on('data',function(data){
USB.print(data); //sending data to terminal
});
/////////////////////////
setTimeout(function () {
var x;
console.log("Start");
LoopbackB.setConsole();
x=test();
if(x!==0)console.log("Try again");//error seen
if(x===0) console.log("Exit Seen");
}, 1000);

    The WebIde screen:

    >echo(0);
=undefined
Start
-> LoopbackB
<- USB
Start connection process
Try again
Reset the ESP8266
Connecting to WiFi
OKxx1
OKxx2
IP=  192.168.1.4
Wi-Fi Connected
Client
client connected
192.168.1.4
Send 0 {"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":0}
>
Select using digit and return key
1 LED Off
2 LED On
0 Exit
>{"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":"192.168.1.3"}
>1
LED Off
Client
Send 1 LED Off
>2
LED On
Client
Send 1 LED On
>0
Exit
<- LoopbackB
=undefined
=undefined
>USB.setConsole();
-> USB

    And the server screen:

    >{"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":0}
Send 0 {"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":"192.168.1.3"}
Socket accept 1 "LED O" undefined
Close false
LED O
Socket accept 1 "ff" undefined
Close false
ff
Socket accept 1 "LED On" undefined
Close false
LED On
>

  • Using UPD to find IP addresses for a TCP network in 5 parts.
    in Projects •
    Avatar for ClearMemory041063

    1. Use UDP to allow clients to find the server IP address
      The UDP is used with a broadcast IP to allow a named client to locate a named server’s IP address.
      The message sent via UDP:

      function UDPmsg(a,b,c,d){
this.ClientName=a;
this.ClientIP=b;
this.ServerName=c;
this.ServerIP=d;
}
var UDP1=new UDPmsg("Bob",0,"Bill",0);

    Client named Bob will ask server named Bill for Bill’s IP address

    The server code:

    //UDP_TCPserver1.js
//2 Oct 2016
//espruino board with ESP8266
//PICO  with ESP8266
//var BroadIP="255.255.255.255";
var BroadIP="192.168.1.255";
//var Hardware=0; //Espruino board
var Hardware =1; //PICO
var SSID="ssid";
var key= "router passcode";
var Serial;
var Wifi;
//var LocalIP;
var UDPport=1234;
var TCPport=9988;
function UDPmsg(a,b,c,d){
 this.ClientName=a;
 this.ClientIP=b;
 this.ServerName=c;
 this.ServerIP=d;
}
var UDP1=new UDPmsg("Bob",0,"Bill",0);
var UDP2=new UDPmsg("",0,"",0);
var ddata="";
function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;

if(Hardware===1){
 digitalWrite(B9,1); // enable on Pico Shim V2
 Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board

console.log("Start connection process");
var wifi = require("UDP").connect(Serial, function(err) {
//var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
  if (err)return 1;// throw err;
  Wifi=wifi;
console.log("Reset the ESP8266");
  wifi.reset(function(err) {
    if (err)return 1;// throw err;
Wifi.at.cmd("AT+CWMODE_CUR=3\r\n", 1000, function(d){console.log(d+"xx1");});
Wifi.at.cmd("AT+CIPMUX=1\r\n", 1000, function(d){console.log(d+"xx2");});
 console.log("Connecting to WiFi");
 wifi.connect(SSID,key, function(err) {
  if (err)return 1;//throw err;
  wifi.getIP(function(l,ip){
   console.log("IP= ",ip,"\n\r");
   UDP1.ServerIP=ip;
   console.log("LocalIP= ",UDP1.ServerIP);
   console.log("WiFi Connected ");

//start the UDP listener
   setupUDP(); 
//HTTP or Network Server goes here
   TCPserve();

////////////////////////////////////////////////////////////
     });//end wifi.getIP
    });//end wifi.connectSSID
  });//end wifi.reset
});//end wifi.connect
}//end test

function setupUDP(){
    Wifi.SetUDP();
  var client = require("net").connect({host:BroadIP,port:UDPport ,protocolVersion: 17}, function() {
    console.log('client connected');
    client.write(JSON.stringify(UDP1));
    client.on('data', function(data){
     ddata+=data;
     if(ddata.charAt(ddata.length-1)==='}'){
      UDP2=JSON.parse(ddata);
      console.log(">"+ddata);
      if(UDP1.ServerName===UDP2.ServerName){
       UDP2.ServerIP=UDP1.ServerIP;
       client.write(JSON.stringify(UDP2));
       ddata="";
      }//endif
     }//endif
    });//end client on data
    client.on('close',function(){console.log("client Close");});
    client.on('end', function() {
     console.log('client disconnected');
    });//end client on end
    //client.end();
   });//end UDP client connect
}//end setupUDP

function TCPserve(){
 var data;
 Wifi.SetTCP();
 var server = require("net").createServer(function(c) {
  // A new client as connected
//  c.write("Hello");
/*  c.on('data', function(data) {
    console.log(">"+JSON.stringify(data));
  });
*/
   c.on('close',function(d){
   console.log("Close "+d);
   data=c.read(c.available());
   console.log(data);
   c.write(data);
     if(data==="LED Off"){
      digitalWrite(B12,0); //B12 is green LED
     }
     if(data==="LED On"){
      digitalWrite(B12,1);
     }
  });
  c.end();
});
server.listen(TCPport);
}//end TCPserve

var x;
console.log("Start");
x=test();
if(x!==0)console.log("Try again");//error seen

if(x===0) console.log("Exit Seen");

    The output as the server starts

    >echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
OKxx1
OKxx2
IP=  192.168.1.3
LocalIP=  192.168.1.3
WiFi Connected
Client
Server
client connected
Send 0 {"ClientName":"Bob","ClientIP":0,"ServerName":"Bill","ServerIP":"192.168.1.3"}
>

    Again disconnect the server from WebIde and connect to Putty terminal application.

  • Using UPD to find IP addresses for a TCP network in 5 parts.
    in Projects •
    Avatar for ClearMemory041063

    1. Modify ESP8266WiFi_0v25.js to do UDP and TCP
      Add UDPflag and CIPstartSTR.

      var at;
var UDPflag=0;
var CIPstartStr="";
var socks = [];

    Modify the code to CIPstart a client in the create: function

      create : function(host, port) {
    /* Create a socket and return its index, host is a string, port is an integer.
    If host isn't defined, create a server socket */  
    if (host===undefined) {
console.log("Server");
      sckt = MAXSOCKETS;
      socks[sckt] = "Wait";
      sockData[sckt] = "";
      at.cmd("AT+CIPSERVER=1,"+port+"\r\n", 10000, function(d) {
        if (d=="OK") {
          socks[sckt] = true;
        } else {
          socks[sckt] = undefined;
          setTimeout(function() {
            throw new Error("CIPSERVER failed ("+(d?d:"Timeout")+")");
          }, 0);
        }
      });
      return MAXSOCKETS;
    } else {  
console.log("Client");
      var sckt = 0;
      while (socks[sckt]!==undefined) sckt++; // find free socket
      if (sckt>=MAXSOCKETS) throw new Error("No free sockets");
      socks[sckt] = "Wait";
      sockData[sckt] = "";

if(UDPflag){//UDP client
 CIPstartStr='AT+CIPSTART='+sckt+',"UDP",'+JSON.stringify(host)+','+port+','+port+',0\r\n';

}else{//TCP client
 CIPstartStr='AT+CIPSTART='+sckt+',"TCP",'+JSON.stringify(host)+','+port+'\r\n';
}//end else
at.cmd(CIPstartStr,10000, function cb(d) {

    Add code to set and reset the UDP flag

    "SetUDP":function(){ UDPflag=1;
},
"SetTCP" : function(){ UDPflag=0;
},

  "getIP" : function(callback) {

    UDP.js placed in modules directory of WebIDE project.

    AT commands for UDP
    https://github.com/espressif/ESP8266_AT/wiki/at_example_0020000903
    https://gist.github.com/mokogobo/3f4d2f074305d4d84344

    https://cdn.sparkfun.com/assets/learn_tutorials/4/0/3/4A-ESP8266__AT_Instruction_Set__EN_v0.30.pdf
    AT+CIPSTART – Establish TCP connection or register UDP port, start connection
    Example
    AT+CIPSTART="TCP","192.168.101.110",1000
    Single connection
    (+CIPMUX=0)
    AT+CIPSTART=,,[,,]
    [,]
    Multiple connection
    (+CIPMUX=1)
    AT+CIPSTART=,,,[,,]
    [,]
    Response
    OK
    or
    ERROR
    If connection already exists, returns
    ALREAY CONNECT
    Parameters

    ID of the connection (0~4), for multi-connect

    string, "TCP" or "UDP"

    string, remote IP

    string, remote port
    []
    for UDP only
    [] In UDP transparent transmission, it has to be 0.
    [] 0
    : destination peer entity of UDP will not change.
    [] 1
    : destination peer entity of UDP can change once.
    [] 2
    : destination peer entity of UDP is allowed to change.
    Note: [] can only be used when [] is set.
    []
    default 0. unit: 500 milliseconds.
    [] 0
    : disable TCP keep-alive
    [] 1 ~ 7200
    : TCP keep-alive interval

    AT+CIPSTART – Function 2: R
    egister UDP port
    Example
    AT+CIPSTART="UDP", "192.168.101.110", 1000, 1002,
    2
    Single connection
    (AT
    +CIPMUX=0)
    AT+CIPSTART=, , [, ,
    ]
    Multiple connection
    (AT+CIPMUX=1
    )
    AT+CIPSTART=, , , [, , ]
    Response
    OK or
    ERROR
    If connection already exists, returns
    ALREADY CONNECT

  • Using UPD to find IP addresses for a TCP network in 5 parts.
    in Projects •
    Avatar for ClearMemory041063

    1. Setup a TCP client
      This code sets up the TCP client on port 9988.
      The console is redirected to the Loopback to allow the WebIDE to act as a simple menu system.
      You will need to edit the hardware flag , ssid and router passcode.
      Additionally you have to hardcode the IP address of the server. (we will fix this with UDP later)

      //netclient3.js
//2 Oct 2016
//espruino board with ESP8266
//PICO  with ESP8266
var IP="192.168.1.3";
var Sport=9988;
//var Hardware=0; //Espruino board
var Hardware =1; //PICO
var SSID="ssid";
var key= "router passcode";
var Serial;
function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;
if(Hardware===1){
digitalWrite(B9,1); // enable on Pico Shim V2
Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board
console.log("Start connection process");
var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
if (err)return 1;// throw err;
console.log("Reset the ESP8266");
wifi.reset(function(err) {
if (err)return 1;// throw err;
console.log("Connecting to WiFi");
wifi.connect(SSID,key, function(err) {
  if (err)return 1;//throw err;
  wifi.getIP(function(l,ip){console.log("IP= ",ip,"\n\r"+l);});
  console.log("Wi-Fi Connected");
// Now you can do something,
menu();
////////////////////////////////////////////////////////////
});
});
});
}//end test
//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
function sendit(msg){
var reply="";
var client = require("net").connect({host: IP, port: Sport}, function() {
//  console.log('client connected');
client.write(msg);
client.on('data', function(data) {
reply+=data;
console.log(">"+JSON.stringify(data));
});
client.on('end', function() {
//    console.log('client disconnected');
return reply;
});
});
}

////////////////////////////////////////////////////////////////////////
var sst="";
//Menus
menu=function(){
USB.print(" \n\r");
USB.print("Select using digit and return key\n\r");
USB.print("1 LED Off\n\r");
USB.print("2 LED On\n\r");
USB.print("0 Exit\n\r");
};
parsecmd=function(){
USB.print("\n\r");
switch(this.sst.charAt(0)){
case "1"://LED off
 sst="";
 USB.print("LED Off\n\r");
 sendit("LED Off");
break;
case "2"://LED On
 USB.print("LED On\n\r");
 sst="";
 sendit("LED On");
break;
case"0"://Exit
 LoopbackA.print("USB.setConsole();\n\r");
 sst="";
 USB.print("Exit\n\r");
break;
default:
 menu();
break;
}//end switch sst
};//end parsecmd
//input cmd from terminal,send it to parsecmd()
USB.on('data', function (data) {
var i;
sst+=data;
USB.print(data);
if(sst.length>0)
if(sst.charAt(sst.length-1)==="\r")parsecmd();
});
//Espruino replies here
LoopbackA.on('data',function(data){
USB.print(data); //sending data to terminal
});
/////////////////////////
setTimeout(function () {
var x;
console.log("Start");
LoopbackB.setConsole();
x=test();
if(x!==0)console.log("Try again");//error seen
if(x===0) console.log("Exit Seen");
}, 1000);

    And the WebIde output:

    >echo(0);
=undefined
Start
-> LoopbackB
<- USB
Start connection process
Try again
Reset the ESP8266
Connecting to WiFi
>
Select using digit and return key
1 LED Off
2 LED On
0 Exit
Wi-Fi Connected
IP=  192.168.1.4
null
>1
LED Off
2
LED On
1
LED Off
0
Exit
<- LoopbackB
=undefined
=undefined
>USB.setConsole();
-> USB

    Notice that the 0 Exit restores the console to the USB port.
    The Server output on the Putty terminal:

    Close false
LED Off
Close false
LED On
Close false
LED Off
>

  • Using UPD to find IP addresses for a TCP network in 5 parts.
    in Projects •
    Avatar for ClearMemory041063
    1. Setup a TCP network server
    2. Setup a TCP client
    3. Modify ESP8266WiFi_0v25.js to do UDP and TCP
    4. Use UDP to allow clients to find the server IP address

    5. The UDP/TCP client.

    6. Setup a TCP network server
      The TCP server and client code are based on the examples listed under the Sockets section of
      http://www.espruino.com/Internet
      The following code sets up a TCP server on port 9988.
      You will need to edit:
      //var Hardware=0; //Espruino board
      var Hardware =1; //PICO
      var SSID="ssid";
      var key= "router passcode";

    When a client connects two commands are accepted “LED On” and “LED Off”

    //netServer3.js
//2 Oct 2016
//espruino board with ESP8266
//PICO  with ESP8266
var Sport=9988;
//var Hardware=0; //Espruino board
var Hardware =1; //PICO
var SSID="ssid";
var key= "router passcode";
var Serial;
var MyIP="";
function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;

if(Hardware===1){
 digitalWrite(B9,1); // enable on Pico Shim V2
 Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board

console.log("Start connection process");
var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
  if (err)return 1;// throw err;
console.log("Reset the ESP8266");
  wifi.reset(function(err) {
    if (err)return 1;// throw err;
    console.log("Connecting to WiFi");
    wifi.connect(SSID,key, function(err) {
      if (err)return 1;//throw err;
      wifi.getIP(function(l,ip){console.log("IP= ",ip,"\n\r"+l);MyIP=ip;
      console.log("Wi-Fi Connected");
// Now you can do something, 
serve();

////////////////////////////////////////////////////////////
     });
    });
  });
});
}//end test

var x;
console.log("Start");
x=test();
if(x!==0)console.log("Try again");//error seen

if(x===0) console.log("Exit Seen");

//xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
function serve(){
 var data;
 var server = require("net").createServer(function(c) {
  // A new client has connected
//  c.write("Hello");
/*  c.on('data', function(data) {
    console.log(">"+JSON.stringify(data));
  });
*/
   c.on('close',function(d){
   console.log("Close "+d);
   data=c.read(c.available());
   console.log(data);
   c.write(data);
     if(data==="LED Off"){
      digitalWrite(B12,0); //B12 is green LED
     }
     if(data==="LED On"){
      digitalWrite(B12,1);
     }
  });
  c.end();
});
server.listen(Sport);

}

    The TCP server output:

    >echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
IP=  192.168.1.3
null
Wi-Fi Connected
>

    At this point I disconnect the WebIDE from the TCP server hardware and reconnect using putty.
    Make a note of the server IP addess.

  • Where i wrong Connect DH11 - Temp is -1 and RH is -1
    in ESP8266 •
    Avatar for ClearMemory041063

    Pull up resistor.
    http://forum.espruino.com/conversations/291256/

  • Where i wrong Connect DH11 - Temp is -1 and RH is -1
    in ESP8266 •
    Avatar for ClearMemory041063

    Try the example at the end of this link to see if the pin is correct.

    http://crufti.com/getting-started-with-espruino-on-esp8266/

    var led = new Pin(4);
var toggle=1;

setInterval(function() {
  toggle=!toggle;
  digitalWrite(led, toggle);
}, 500);

//You should see the LED connected to D2 blinking:

    There is also a DH22 module that you could try in the software require(DH22).

  • Where i wrong Connect DH11 - Temp is -1 and RH is -1
    in ESP8266 •
    Avatar for ClearMemory041063

    Try it with Pin D4.
    I don't have a DH11 module.
    I looked at Pin D14 with a scope and ran your code. No pulses.
    With Pin D4 I get pulses.
    var dht = require("DHT11").connect(D4);

  • Where i wrong Connect DH11 - Temp is -1 and RH is -1
    in ESP8266 •
    Avatar for ClearMemory041063

    http://www.espruino.com/EspruinoESP8266

    Use this link to make sure you are naming the pin correctly in the call function.

    var dht = require("DHT11").connect(D14);

  • Where i wrong Connect DH11 - Temp is -1 and RH is -1
    in ESP8266 •
    Avatar for ClearMemory041063

    Hi @Aleksandrs
    I don't have a DH11.
    I would suggest disconnecting the DH11 and using an LED and resistor in series.
    Use digitalWrite(D14,0) and digitalWrite(D14,1) and see if you have the correct pin

    http://crufti.com/getting-started-with-espruino-on-esp8266/

    These links may be of use to you.

    http://www.espruino.com/DHT11

    http://forum.espruino.com/conversations/640/

    http://www.espruino.com/DHT22

  • After reboot HTTP do not working need reflash from WEB IDE Reply link is missing
    in ESP8266 •
    Avatar for ClearMemory041063

    Hi @Aleksandrs see the attached file:
    I hope it gets you started.

    >echo(0);
To run in left pane enter test();
To save for boot and run enter save(); in left pane
=undefined
>save();
=undefined
Erasing Flash.....
Writing..................
Compressed 81600 bytes to 16091
Checking...
Done!
Start
Start connection process
Try again
Reset the ESP8266
Connecting to WiFi
IP=  192.168.1.3
null
Get
Get

    The code:

    //alex2.js
//1 Oct 2016
//var dht = require("DHT22").connect(D0); // GPIO4
var lastDhtData ="DHT reading goes here";
var testcount=0;
//espruino board with ESP8266
//PICO  with ESP8266
//IP=192.168.1.4
//Use the following in the browser
//http://192.168.1.4:8080/
//IP=192.168.1.3
//Use the following in the browser
//http://192.168.1.3:8080/

//var Hardware=0; //Espruino board
var Hardware =1; //PICO

var SSID="ssid";
var key= "passcode";

var Serial;

function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;

if(Hardware===1){
 digitalWrite(B9,1); // enable on Pico Shim V2
 Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board

console.log("Start connection process");
var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
  if (err)return 1;// throw err;
console.log("Reset the ESP8266");
  wifi.reset(function(err) {
    if (err)return 1;// throw err;
    console.log("Connecting to WiFi");
    wifi.connect(SSID,key, function(err) {
      if (err)return 1;//throw err;
      wifi.getIP(function(l,ip){
        console.log("IP= ",ip,"\n\r"+l);
// Now you can do something, 
////////////////////////////////////////////////////////////
 serveHTML();
////////////////////////////////////////////////////////////
     });//end getIP
    });//end connect SSID
  });//end reset
});//end conect serial
}//end test
////////////////////////////////////////////////////////////

function serveHTML(){
var http=require("http").createServer(onPageRequest).listen(8080);
}//end serveFile

var pdata="";
function onPageRequest(req, res) { 
//console.log("Req= ",req);
//console.log("Header",req.headers);
if (req.method=="POST") {
  console.log("Post");
  doPost(req,res);
}else{
  doGet(req,res);
}//endif
}//end on PageRequest

var KMtext1="<html><body style=\"text-align:center;margin-left:auto;margin-right:auto;\"> \r\n<h1>";
var KMtext2="</h1>\r\n</body> \r\n</html>  \r\n";

function doGet(req,res){
  var a = url.parse(req.url, true);
  console.log("Get");
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.write(KMtext1);
    res.write(lastDhtData);
    res.write(KMtext2);
    res.end("");
}

function doPost1(req,res){
//todo read posted data, compose reply and send it
}

////////////////////////////////////////////////////////////

// Get data from sensor every 1 minute
setInterval(function(){
/*  dht.read(function (a) {
    lastDhtData = a.temp.toString()+","+a.rh.toString();
  });
*/
 testcount++;
 lastDhtData= "data= "+testcount;
},1000); //60000);


E.on('init', function() { 
var x;
console.log("Start");
x=test();
if(x!==0)console.log("Try again");//error seen

if(x===0) console.log("Exit Seen");
});

console.log("To run in left pane enter test();");
console.log("To save for boot and run enter save(); in left pane");

  • After reboot HTTP do not working need reflash from WEB IDE Reply link is missing
    in ESP8266 •
    Avatar for ClearMemory041063

    (As another user)
    Did you load the program into the device and then in the left pane of the WebIDE type in
    save();
    ?
    http://www.espruino.com/Reference#l__global_save

    http://forum.espruino.com/conversations/278526/

  • Implementing UDP on Espruino, Using UDP broadcast to find server IP.
    in Projects •
    Avatar for ClearMemory041063

    You can do both UDP and TCP at the same time.

    Wifi.at.cmd("AT+CWMODE_CUR=3\r\n", 1000, function(d){console.log(d+"xx1");});

    You call SetUDP and then setup a network with protocol 17 for UDP.
    Then you call SetTCP and setup either HTTP or a TCP network.

         wifi.SetUDP();
     var client = require("net").connect({host: BroadIP, port: UDPport,protocolVersion: 17}, function() {

    Use the UDP to obtain the IP address of the server and then

              wifi.SetTCP();
           getReply(console.log);
...
function getReply(callback) {
  var options = {
    host: ServerIP,
    port: '8080',
    path:"/",
    method:'GET',
    headers: {
    }
  };
  console.log("getReply");
  require("http").request(options, function(res)  {
    var d = "";
    res.on('data', function(data) { d+= data; });
    res.on('close', function(data) {
      var j = JSON.parse(d);
      console.log("d= ",d);//console.log("j= ",j);
      if (callback) callback((j&&j.result)?j.result:undefined);
    });
  }).end();
}//end getReply

    On the server side

        wifi.SetUDP();
  var client = require("net").connect({host:BroadIP,port:UDPport ,protocolVersion: 17}, function() {
    console.log('client connected');
    client.write(JSON.stringify(UDP1));
    client.on('data', function(data){
     ddata+=data;
     if(ddata.charAt(ddata.length-1)==='}'){
      UDP2=JSON.parse(ddata);
      console.log(">"+ddata);
      if(UDP1.ServerName===UDP2.ServerName){
       UDP2.ServerIP=UDP1.ServerIP;
       client.write(JSON.stringify(UDP2));
       ddata="";
      }//endif
     }//endif
    });//end client on data
    client.on('close',function(){console.log("client Close");});
    client.on('end', function() {
     console.log('client disconnected');
    });//end client on end
    //client.end();
   });//end UDP client connect
});//end wifi.getIP
//HTTP or Network Server goes here
   wifi.SetTCP();
serveHTML();
//////////////////
.....
function serveHTML(){
var http=require("http").createServer(onPageRequest).listen(8080);
}//end serveFile


function onPageRequest(req, res) { 
//console.log("Req= ",req);
//console.log("Header",req.headers);
if (req.method=="POST") {
  console.log("Post");
  doPost(req,res);
}else{
  doGet(req,res);
}//endif
}//end on PageRequest

  • Architecture: UDP support
    in General •
    Avatar for ClearMemory041063

    Have a look at this for UDP.
    http://forum.espruino.com/conversations/293517/
    SetTCP() SetUDP() set a flag and are used before setting up HTTP and Net

  • net socket request never arrives
    in ESP8266 •
    Avatar for ClearMemory041063

    Attached is some code to try for TCP comunications.
    You will need to edit the SSID and key to configure your router access.
    On one Pico start the server code and note the IP address it will display.
    Disconnect from WebIDE and connect with a Terminal program such as Putty.
    On a second Pico load the client code using WebIde.
    In addition to the SSID and key edit the IP variable to match the server IP address
    You can also change the port in both server and client code as it is 1234 in this code.

  • Espruino Wifi v1.1
    in General •
    Avatar for ClearMemory041063

    Attached file contains code to serve HTML. It does both a Get and Post method.

    You will need to edit the SSID and router password.
    Adjust the serial port stuff to fit your hardware.

    The IP address will display in the WebIDE
    Mine was 192.168.3
    I used it in the Browser as follows:

    http://192.168.1.3:8080/

    You will need to modify the doGet() function at the bottom to serve your content.

    function doGet(req,res){
  var a = url.parse(req.url, true);
  console.log("Get");
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.write(KMtext);
    res.end("");
}

  • Implementing UDP on Espruino, Using UDP broadcast to find server IP.
    in Projects •
    Avatar for ClearMemory041063

    You have implemented a house full of IoT devices and have a happy automated life. The power goes off and when it comes back on the DCHP in your router reassigns IP addresses and your IoTs can’t find each other.
    These programs show how to implement UDP (User Datagram Protocol) in Espruino and use the broadcast IP address 255.255.255.255 to allow the IoT’s to discover the IP addresses.

    Place UDP.js in the project modules folder.
    Edit the UDP_HTTPserver2.js and UDP_HTTPclient3.js files and insert your router SSID and password.
    var SSID="ssis";
    var key= "router password";

    The ESP8266WiFi_0v25.js module was amended into UDP.js
    var wifi = require("UDP").connect(Serial, function(err) {
    //var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
    The send function is currently set to print the socket number and text.

    These variables were added:
var UDPflag=1;
var CIPstartStr="";
The client code was modified
var netCallbacks = {
  create : function(host, port) {
…
    } else {  
console.log("Client");
      var sckt = 0;
      while (socks[sckt]!==undefined) sckt++; // find free socket
      if (sckt>=MAXSOCKETS) throw new Error("No free sockets");
      socks[sckt] = "Wait";
      sockData[sckt] = "";

if(UDPflag){//UDP client
 CIPstartStr='AT+CIPSTART='+sckt+',"UDP",'+JSON.stringify(host)+','+port+','+port+',0\r\n';

}else{//TCP client
 CIPstartStr='AT+CIPSTART='+sckt+',"TCP",'+JSON.stringify(host)+','+port+'\r\n';
}//end else
at.cmd(CIPstartStr,10000, function cb(d) {
And two commands were added,
"SetUDP":function(){ UDPflag=1;
},
"SetTCP" : function(){ UDPflag=0;
},

  "getIP" : function(callback) {

    UDP_HTTPserver2.js
    This uses the broadcast IP of 255.255.255.255 to listen for a message from a client.
    The message identifies the client, the client’s IP and the server name.
    If the server name refers to this server program then a UDP broadcast message is sent that supplies the IP address of this server.
    An HTTP server is also implemented. If you run the program, a browser can access the simple web page. (The browser needs the IP address)

    >echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
OKxx1
OKxx2
Server
IP=  192.168.1.3
LocalIP=  192.168.1.3
WiFi Connected
Client
client connected
Send 0 {"ClientName":"Bob","ClientIP":0,"ServerName":"Bill","ServerIP":"192.168.1.3"}

    UDP_HTTPclient3.js
    This program uses UDP to broadcast a message containing the client name, client IP and the server name that is needed to start a connection. The program listens for the reply message and if the names match it sends an HTTP Get request to the server at the server IP returned in the UDP message. The result of the HTTP Get request are displayed

    >echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
OKxx1
OKxx2
IP=  192.168.1.4
Wi-Fi Connected
Client
client connected
192.168.1.4
Send 0 {"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":0}
>{"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":"192.168.1.3"}
getReply
Client
Send 1 GET / HTTP/1.0
User-Agent: Espruino 1v86
Connection: close
Host: 192.168.1.3:8080
d=  <html><body style="text-align:center;margin-left:auto;margin-right:auto;">
<h1>UDP Demo.</h1>
</body>
</html>

    UDP_HTTPserver2.js

    >{"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":0}
Send 0 {"ClientName":"Bob","ClientIP":"192.168.1.4","ServerName":"Bill","ServerIP":"192.168.1.3"}
Socket accept 1 "GET / " undefined
Get
Send 1 HTTP/1.0 200 OK
Server: Espruino 1v86
Content-Type: text/html

<html><body style="text-align:center;margin-left:auto;margin-right:auto;">
<h1>UDP Demo.</h1>
</body>
</html>

>

  • Problem saving the IP address for later use.
    in JavaScript •
    Avatar for ClearMemory041063

    I found a solution:
    Use a SetInterval and wait for the IP address to show up.

          wifi.getIP(function(l,ip){console.log("IP= ",ip,"\n\r"+l);xIP=ip;});
id=setInterval(function () {
  console.log("Hello World");
  if(xIP!==undefined){
   console.log("xIP= ",xIP);
  clearInterval(id);
      console.log("Wi-Fi Connected ");
// Now you can do something, 
      var client = require("net").connect({host: IP, port: 1234,protocolVersion: 17}, function() {
  console.log('client connected');
  client.write("Jello"+xIP);
  client.on('data', function(data) {
    console.log(">"+JSON.stringify(data)+"xjello");
  client.write("Reply"+xIP);
  });
  client.on('end', function() {
    console.log('client disconnected');
  });

//client.end("UTLEY");
});
  }
}, 1000);

    And the output:

    >echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
OKxx1
OKxx2
IP=  192.168.1.3
null
Hello World
xIP=  192.168.1.3
Wi-Fi Connected
Client
client connected
Send 0 Jello192.168.1.3
>

    And the Billy Bob device

    >echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
OKxx1
OKxx2
Wi-Fi Connected
Client
client connected
IP=  192.168.1.4
null
"192.168.1.4"
Send 0 XX 192.168.1.4Jello
>"Reply192.168.1.3"xjello
>
Disconnected

    I expect to post the UDP in a few days after some code cleanup.
    It modifies the ESP8266WiFi_0v25 module to allow UDP.
    var wifi = require("UDP").connect(Serial, function(err) {
    //var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {

  • Problem saving the IP address for later use.
    in JavaScript •
    Avatar for ClearMemory041063

    The assignment MyIP=ip; is done in the callback. That's what's puzzling. The console.log(ip) is also done in the callback before the assignment and displays the IP address. It's likely a timing issue but still puzzling.

    I've got UDP working (not this example code). I broadcast using IP=255.255.255.255 and send a keyword and local IP address. If the keyword matches, the other end broadcasts using a keyword and it's local IP address. So I need the local IP address from the getIP function to finish this.
    Msg1: Hi I'm Billy Bob at IPxxx, where are you Sally?
    Msg2: Hi I'm Sally at IPyyy.
    Then Billy Bob can use IPyyy to contact Sally.
    Right now I'm hard coding the local IP addresses, but that defeats the purpose since the next time my router resets the IP addresses will be reassigned.

  • Problem saving the IP address for later use.
    in JavaScript •
    Avatar for ClearMemory041063

    PICO shimmed to ESP8266.
    I use wifi.getIP() and print the resulting IP address, then assign it to a global variable.
    Printing the global variable MyIP doesn’t work.
    Later typing MyIP; into the left pane I get the IP address.
    So what’s going on and is there a solution?

    //MyIP.js
//26Sep 2016
//espruino board with ESP8266
//PICO  with ESP8266
//var Hardware=0; //Espruino board
var Hardware =1; //PICO
var SSID="ssis";
var key= "routerpw";
var Serial;
var MyIP="";
function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;
if(Hardware===1){
 digitalWrite(B9,1); // enable on Pico Shim V2
 Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board
console.log("Start connection process");
var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
  if (err)return 1;// throw err;
console.log("Reset the ESP8266");
  wifi.reset(function(err) {
    if (err)return 1;// throw err;
    console.log("Connecting to WiFi");
    wifi.connect(SSID,key, function(err) {
      if (err)return 1;//throw err;
      wifi.getIP(function(l,ip){console.log("IP= ",ip,"\n\r"+l);MyIP=ip;});
      console.log("Wi-Fi Connected");
      console.log("MyIP= ",MyIP,"XXX");
      console.log("MyIP= "+MyIP+"XXX");
// Now you can do something, 
 var server = require("net").createServer(function(c) {
  // A new client as connected
  c.write("Hello");
  c.on('data', function(data) {
    console.log(">"+JSON.stringify(data));
  });
  c.end();
});
server.listen(1234);
    });
  });
});
}//end test
var x;
console.log("Start");
x=test();
if(x!==0)console.log("Try again");//error seen
if(x===0) console.log("Exit Seen");

    The output:

    >echo(0);
Start
Start connection process
Try again
=undefined
Reset the ESP8266
Connecting to WiFi
Wi-Fi Connected
MyIP=   XXX
MyIP= XXX
IP=  192.168.1.3
null
>MyIP;
="192.168.1.3"
>

  • Pico infrared not transmitting correctly
    in General •
    Avatar for ClearMemory041063

    This link might help. Note it uses a 0.9 duty cycle.

    http://www.espruino.com/Pico+Infrared

    Since you don't have a scope you might try this one liner to see the LED flashing.
    analogWrite(A5,0.5,{freq:0.5});
    It uses a lower frequency so you can see the flashes.

    I did this one liner to flash the Green LED on a Pico. This is not PWM pin so you have to use the software PWM. PWM pins use the Timer peripherals built into the ARM chip.
    analogWrite(B12,0.5,{freq:0.5,soft:true});

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