Connecting EspruinoWiFi to computer over WiFi

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trusktr

Thanks for the tips @Gordon. I gave websockets a try on Espruino Wifi, like the following, and it seems to work at a reasonable rate that could be used for animation, however every few seconds or so the incoming values on the UI seems to pause for a very noticeable while. Could it be GC on Espruino? Maybe there's some way to smooth it out?

By values, I meant that Chrome console shows a counter for every time the same thing is logged. So this counter increments, it isn't really a value sent from Espruino, but the counter pauses every short while, which could cause "jank". I wonder if it is possible to fix that.

function getMPU() {
    I2C1.setup({scl:B6,sda:B7, bitrate: 100000});

    var MPU6050 = require("MPU6050");
    console.log(MPU6050);

    var mpu = MPU6050.connect(I2C1);

    return mpu
}

function connectToWifi(wifiName, options) {
    var resolve, reject
    var promise = new Promise(function(res, rej) {resolve = res; reject = rej})

    var wifi = require("EspruinoWiFi");

    wifi.connect(wifiName, options, function(err) {
        if (err) reject(err);
        resolve();
    });

    return promise
}

connectToWifi("starlancer", { password : "Next stop: Mars." })
.then(function() {
    const mpu = getMPU();

    const wifi = require("EspruinoWiFi");
    wifi.getIP(function(err, info) {
        if (err) throw err
        console.log('IP:', info.ip)
    });
  
    var page = '<html><body><script>var ws;setTimeout(function(){';
    page += 'ws = new WebSocket("ws://" + location.host + "/my_websocket", "protocolOne");';
    page += 'console.log("host", location.host);'; // <--------------------- this is logged slowly.
    page += 'ws.onmessage = function (event) { console.log("MSG:"+event.data); };';
    page += 'setTimeout(function() { ws.send("Hello to Espruino!"); }, 1000);';
    page += '},1000);</script></body></html>';

    function onPageRequest(req, res) {
      res.writeHead(200, {'Content-Type': 'text/html'});
      res.end(page);
    }

    var server = require('ws').createServer(onPageRequest);
    server.listen(8000);
    server.on("websocket", function(ws) {
      ws.on('message',function(msg) { print("[WS] "+JSON.stringify(msg)); });
      setInterval(function() {ws.send("Hello from Espruino!");}, 42);
    });
});

function onInit() {
    console.log('Espruino started!');
}

Thanks for all the help! I am loving to learn, but I have a long ways to go.

Connecting EspruinoWiFi to computer over WiFi

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