Espruino on ESP32

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•

Wilberforce

Further progress made:

save() works - and on reboot loads saved code
wifi.save() saves the current connects and reloads on reboot

So after wifi connect and save, here is a example using websockets:

function onInit() {
  
  console.log('on init...');

var wifi=require("Wifi");
//wifi.connect(ssid, {password: password}, function() {

wifi.on('connected', function(details) { 
  console.log("Connected to access point, listening for clients",details);

  var http = require("http");
  
  
 function onPageRequest(req, res) {
    //console.log(req);
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.end(page);
 }

  var page=`
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
  </head>
  <body>
    <div class="well well-lgt">
      <div class="panel-heading">
        <h3>Websockets</h3>
      </div>
      <button class="btn btn-warning" id="send" onclick="ws.send(JSON.stringify({click:{count:count}}));;count=count+1;this.innerHTML='Send '+count">Send to Espruino</button>
      <ul id="list" class="list-group"></ul>
    </div>
    <script>
	var ws, count = 1;
  setTimeout(function () {

  ws = new WebSocket("ws://" + location.host + "/my_websocket", "protocolOne");
    ws.jsend=function(o) {
   this.send(JSON.stringify(o));
	};
  ws.onmessage = function (event) {
    console.log({
      msg : event.data
    });
    var ul = document.getElementById("list");
    var li = document.createElement("li");
    li.className = "list-group-item";
    li.appendChild(document.createTextNode(event.data));
    ul.appendChild(li);
  };
  setTimeout(function () {
	//ws.send(JSON.stringify({click:{count:count}}));
    //ws.send(JSON.stringify({info:{value:'Hello to Espruino!'}}));
    //ws.send(JSON.stringify({date:{date : new Date()}}));
	ws.jsend({info:{value:'Hello to Espruino!'}});
    ws.jsend({date:{date : new Date()}});
  }, 1000);
}, 1000);
</script>
  </body>
</html>
`;

var ws_outer;
  
  function sendTime() {
    ws_outer.send(JSON.stringify({data:new Date().ms}));
  }


 var server = require('ws').createServer(onPageRequest);
 server.listen(80);
 server.on("websocket", function(ws) {
   ws_outer=ws;
    ws.on('message',function(msg) { console.log((msg)); });
    ws.send("Hello from Espruino!");
    sendTime();
 });


});
};

open a browser with the address echoed:

Connected to access point, listening for clients {
  "ip": "192.168.15.11",
  "netmask": "255.255.255.0",
  "gw": "192.168.15.1"
 }

Still lots of vars free:

>process.memory();
={ "free": 3858, "usage": 1142, "total": 5000, "history": 528 }
>ESP32.getState();
={
  "sdkVersion": "1.0.0(c418d6b)",
  "freeHeap": 97864 }
>

Espruino on ESP32

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Espruino