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user133052

Member since Aug 2021 • Last active Sep 2021
  • 3 conversations
  • 7 comments

Most recent activity

  • started
    • 4 comments
    • 1,064 views
    @Gordon replied

  • Bangle - AWS IoT services connection
    in Bangle.js •
    Avatar for user133052

    Hi! I already searching some discussion about this topic,
    http://forum.espruino.com/conversations/309175/#comment14957191

    Would you please tell me any Idea of data upload to AWS server from Bangle.js?
    I just considering web client(REST API) for Bangle raw data sending to AWS,
    is it best way?

  • started
    • 3 comments
    • 903 views
    @user133052 replied

  • how to auto reconnect bangle?
    in Bangle.js •
    Avatar for user133052

    Hi Gordon! my OS is Window10, and programming language is Javascript.
    I refer to this example, my frontend framework is Vue.js. I share some of codes of page.

       bangleCode: `Bangle.setLCDPower(1);
        Bangle.setLCDTimeout(0);
        Bangle.setHRMPower(1);
        var hrmInfo, hrmOffset = 0;
        var hrmInterval;
        var btm = g.getHeight()-1;
        
        function onHRM(h) {
          if (counter!==undefined) {
            // the first time we're called remove
            // the countdown
            counter = undefined;
            g.clear();
          }
          hrmInfo = h;
          /* On 2v09 and earlier firmwares the only solution for realtime
          HRM was to look at the 'raw' array that got reported. If you timed
          it right you could grab the data pretty much as soon as it was written.
          In new firmwares, '.raw' is not available. */
          if (hrmInterval) clearInterval(hrmInterval);
          hrmInterval = undefined;
          if (hrmInfo.raw) {
            hrmOffset = 0;
            setTimeout(function() {
              hrmInterval = setInterval(readHRM,41);
            }, 40);
          }
        
          var px = g.getWidth()/2;
          g.setFontAlign(0,0);
          g.clearRect(0,24,239,80);
          g.setFont("6x8").drawString("Confidence "+hrmInfo.confidence+"%", px, 75);
          var str = hrmInfo.bpm;
          g.setFontVector(40).drawString(str,px,45);
          px += g.stringWidth(str)/2;
          g.setFont("6x8");
          g.drawString("BPM",px+15,45);
        }
        Bangle.on('HRM', onHRM);
        /* On newer (2v10) firmwares we can subscribe to get
        HRM events as they happen */
        Bangle.on('HRM-raw', function(v) {
          hrmOffset++;
          if (hrmOffset>g.getWidth()) {
            hrmOffset=0;
            g.clearRect(0,80,239,239);
            g.moveTo(-100,0);
          }  
          y = E.clip(btm-v.filt/4,btm-10,btm);  
          g.setColor(1,0,0).fillRect(hrmOffset,btm, hrmOffset, y);
          y = E.clip(170 - (v.raw/2),80,btm);
          g.setColor(g.theme.fg).lineTo(hrmOffset, y);
          if (counter !==undefined) {
            counter = undefined;
            g.clear();
          }
        });
        
        // It takes 5 secs for us to get the first HRM event
        var counter = 5;
        function countDown() {
          if (counter) {
            g.drawString(counter--,g.getWidth()/2,g.getHeight()/2, true);
            setTimeout(countDown, 1000);
          }
        }
        g.clear().setFont("6x8",2).setFontAlign(0,0);
        g.drawString("Please wait...",g.getWidth()/2,g.getHeight()/2 - 16);
        countDown();        
        
        var wasHigh = 0, wasLow = 0;
        var lastHigh = getTime();
        var hrmList = [];
        var hrmInfo;
        
        function readHRM() {
          if (!hrmInfo) return;
        
          if (hrmOffset==0) {
            g.clearRect(0,100,239,239);
            g.moveTo(-100,0);
          }
          for (var i=0;i<2;i++) {
            var hrmData = hrmInfo.raw[hrmOffset];
            hrmOffset++;
            y = E.clip(170 - (hrmData*2),100,230);
            g.setColor(g.theme.fg).lineTo(hrmOffset, y);
            var print = ["HRM", hrmData ];
             Bluetooth.println(
               print.join(",")
               );
          }
        }
        Bangle.on('accel',function(a) {
          var d = [
            "ACC",
            Math.round(a.x*100),
            Math.round(a.y*100),
            Math.round(a.z*100)
            ];
          Bluetooth.println(d.join(","));
        })
        `,

connectWatch1(state) {
            let connection1;
            // disconnect if connected already
            if (connection1) {
                connection1.close();
                connection1 = undefined;
                state.watch1.connect = false
            }

            // Connect
            Puck.connect(function(c) {
                if (!c) {
                    // alert("Couldn't connect!");
                    // return;
                    state.watch1.connect = false
                    this.connectWatch1()
                }
                connection1 = c;
                state.watch1.connect = true
                    // console.log(connection)
                    // Handle the data we get back, and call 'onLine'
                    // whenever we get a line
                var buf = "";
                connection1.on("data", function(d) {
                    buf += d;
                    var l = buf.split("\n");
                    buf = l.pop();
                    l.forEach(
                        (line) => {
                            var d = line.split(',')
                            if (d[0] == 'ACC') {
                                // we have an accelerometer reading
                                state.watch1.accelX = parseInt(d[1]) / 100
                                state.watch1.accelY = parseInt(d[2]) / 100
                                state.watch1.accelZ = parseInt(d[3]) / 100
                            } else if (d[0] == 'HRM') {
                                // we have an accelerometer reading
                                state.watch1.hrm = parseInt(d[1])
                            }

                            // console.log("RECEIVED:" + state.watch1);
                        }
                        // console.log('RECEIVED:' + line)
                    );
                });
                // First, reset the Bangle
                connection1.write("reset();\n", function() {
                    // Wait for it to reset itself
                    setTimeout(function() {
                        // Now upload our code to it
                        connection1.write(
                            "\x03\x10if(1){" +
                            state.bangleCode +
                            "}\n",
                            function() {
                                console.log("Ready...");
                            }
                        );
                    }, 1500);
                });
            });
        },

    thank you for your good source of reconnect!😀

  • how to auto reconnect bangle?
    in Bangle.js •
    Avatar for user133052

    Bangle is so interesting, and I using it to get realtime emotional data(from HRM Sensor). but have some problems for stable connection. commonly after 3-5 minutes, bangles connection disconnected.
    so I wanna make a code automatically reconnect with no popup window of BLE connection when it disconnected. can you help me?

  • is it possible more than 3 bangles connect in one PC?
    in Bangle.js •
    Avatar for user133052

    you are right, after chrome://flags/#enable-experimental-web-­platform-features , check enable, "Argh! TypeError: navigator.bluetooth.requestLEScan is not a function" is disappeared! and andriod chrome recieved all advertisement imformation well, but window 10 chrome not 😂 anyway, your help is so helpful for me, and please share if it possible on window10 environment next time. thank you very much!!

  • started
    • 7 comments
    • 1,406 views
    @user133052 replied

  • is it possible more than 3 bangles connect in one PC?
    in Bangle.js •
    Avatar for user133052

    Dear Gordon, really thank you for your kind.
    I try by Windows 10, android(Galaxy10, Chrome), but just see same result
    "Argh! TypeError: navigator.bluetooth.requestLEScan is not a function"
    I am searching the reason of this alert, just find this kind of answer.
    link

    If possible, please show detail of your process by chrome? I want to using it on the chrome web browser 😄

  • is it possible more than 3 bangles connect in one PC?
    in Bangle.js •
    Avatar for user133052

    Dear Gordon,
    Thank you for your reply, and Yes, I really want to tutorial code of it by bangles. please help me! and I will send video file of my web service introduction with bangles by your email if you want.

  • is it possible more than 3 bangles connect in one PC?
    in Bangle.js •
    Avatar for user133052

    Hello,

    I am success to connect 3 bangles together at same time,

    and attempt to connect 4th bangle, cannot scan any more bangle.

    and after disconnected one of bangle, available scan one more.

    is it possible more than 3 bangles connect in one PC?

    someone help me how to connect 10 bangles in one PC?

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