puck and bangle slide switching

bangle-slides.js

javascript: (function () {  function changed(data) {    console.log("Changed!", value);    bluetoothWrite(`;E.emit('myapp',${JSON.stringify(data)});\n`);  }  let lastSlide, cango;  function poll() {    slide = window.location.hash.substring(2);    if (cango && slide !== lastSlide) {      lastSlide = slide;      changed(slide);    }  }  /*  Bluetooth Handling   */  var bluetoothDevice, bluetoothServer, bluetoothService, bluetoothTX;  function bluetoothConnect(finishedCb) {    /*  First, put up a window to choose our device */    navigator.bluetooth      .requestDevice({        filters: [          { services: ["6e400001-b5a3-f393-e0a9-e50e24dcca9e"] },          { namePrefix: "Bangle.js" },        ],      })      .then((device) => {        /*  Now connect to it */        console.log("Connecting to GATT Server...");        bluetoothDevice = device;        return device.gatt.connect();      })      .then(function (server) {        /*  now get the 'UART' bluetooth service, so we can read and write! */        console.log("Connected");        bluetoothServer = server;        return server.getPrimaryService("6e400001-b5a3-f393-e0a9-e50e24dcca9e");      })      .then(function (service) {        /*  get the transmit service */        bluetoothService = service;        return bluetoothService.getCharacteristic(          "6e400002-b5a3-f393-e0a9-e50e24dcca9e"        );      })      .then(function (char) {        bluetoothTX = char;        /*  get the receive service (for debugging!) */        return bluetoothService.getCharacteristic(          "6e400003-b5a3-f393-e0a9-e50e24dcca9e"        );      })      .then(function (bluetoothRX) {        /*  respond to changes in the characteristic and write them to the console */        bluetoothRX.addEventListener(          "characteristicvaluechanged",          function (event) {            var ua = new Uint8Array(event.target.value.buffer);            var str = "";            ua.forEach((v) => (str += String.fromCharCode(v)));            console.log("BT> ",cango, JSON.stringify(str));            if(!cango) {return;};            if (str.includes("BTN") || str.includes("NEXT")) {              Reveal.next();            }            if (str.includes("PREV")) {              Reveal.prev();            }          }        );        return bluetoothRX.startNotifications();      })      .then(function () {        console.log("Completed!");        if (finishedCb) finishedCb();        setInterval(poll, 1000);      });  }  function bluetoothWrite(str) {    if (!bluetoothTX) return;    var next;    if (str.length > 20) {      next = str.substr(20);      str = str.substr(0, 20);    }    var u = new Uint8Array(str.length);    for (var i = 0; i < str.length; i++) u[i] = str.charCodeAt(i);    console.log("Writing ", JSON.stringify(str));    bluetoothTX.writeValue(u.buffer).then(function () {      if (next) bluetoothWrite(next);      else console.log("Written!");    });  }  /*  Send to Espruino */  function changed(value) {    bluetoothWrite(`E.emit('myapp',${JSON.stringify(value)})\n`);  }  /*  Initialise - we need something to click to start the Bluetooth connection */  var modal = document.createElement("div");  modal.style =    "position:absolute;top:0px;left:0px;width:100%;height:100%;background:rgba(0,0,0,0.8);color:white;z-index:10000;text-align:center";  document.body.append(modal);  modal.onclick = function () {    document.body.removeChild(modal);    bluetoothConnect(function () {      console.log("starting up");      bluetoothWrite("reset();\n");      setTimeout(() => {        bluetoothWrite(`var value = "---";function draw() {  var R = Bangle.appRect;  g.reset().clearRect(R);  g.setFont("Vector",26).setFontAlign(0,0);  g.drawString(value, R.x + R.w/2, R.y + R.h/2);  g.setFont("12x20").drawString("slide", R.x + R.w/2, R.y + R.h/2 - 30);}Bangle.loadWidgets();Bangle.drawWidgets();draw();E.on('myapp', function(v) {  value = v;  Bangle.buzz(300,0.5);  draw();});setWatch(function() {  Bluetooth.println("BTN");}, BTN, {repeat:true});Bangle.on('swipe', function(directionLR, directionUD) {   if(directionLR > 0) {      Bluetooth.println("NEXT");  }  if(directionLR < 0) {      Bluetooth.println("PREV");  }});            `);        cango = 1;      }, 2000);    });  };})();

puck-slides.js

javascript: (function () {  /*  Bluetooth Handling   */  var bluetoothDevice, bluetoothServer, bluetoothService, bluetoothTX;  function bluetoothConnect(finishedCb) {    /*  First, put up a window to choose our device */    navigator.bluetooth      .requestDevice({        filters: [          { services: ["6e400001-b5a3-f393-e0a9-e50e24dcca9e"] },        ]      })      .then((device) => {        /*  Now connect to it */        console.log("Connecting to GATT Server...");        bluetoothDevice = device;        return device.gatt.connect();      })      .then(function (server) {        /*  now get the 'UART' bluetooth service, so we can read and write! */        console.log("Connected");        bluetoothServer = server;        return server.getPrimaryService("6e400001-b5a3-f393-e0a9-e50e24dcca9e");      })      .then(function (service) {        /*  get the transmit service */        bluetoothService = service;        return bluetoothService.getCharacteristic(          "6e400002-b5a3-f393-e0a9-e50e24dcca9e"        );      })      .then(function (char) {        bluetoothTX = char;        /*  get the receive service (for debugging!) */        return bluetoothService.getCharacteristic(          "6e400003-b5a3-f393-e0a9-e50e24dcca9e"        );      })      .then(function (bluetoothRX) {        /*  respond to changes in the characteristic and write them to the console */        bluetoothRX.addEventListener(          "characteristicvaluechanged",          function (event) {            var ua = new Uint8Array(event.target.value.buffer);            var str = "";            ua.forEach((v) => (str += String.fromCharCode(v)));            if (str.includes("BTNPRESS")) {              Reveal.next();            }          }        );        return bluetoothRX.startNotifications();      })      .then(function () {        console.log("Completed!");        if (finishedCb) finishedCb();      });  }  function bluetoothWrite(str) {    if (!bluetoothTX) return;    var next;    if (str.length > 20) {      next = str.substr(20);      str = str.substr(0, 20);    }    var u = new Uint8Array(str.length);    for (var i = 0; i < str.length; i++) u[i] = str.charCodeAt(i);    console.log("Writing ", JSON.stringify(str));    bluetoothTX.writeValue(u.buffer).then(function () {      if (next) bluetoothWrite(next);      else console.log("Written!");    });  };  /*  Initialise - we need something to click to start the Bluetooth connection */  var modal = document.createElement("div");  modal.style =    "position:absolute;top:0px;left:0px;width:100%;height:100%;background:rgba(0,0,0,0.8);color:white;z-index:10000;text-align:center";  document.body.append(modal);  modal.onclick = function () {    document.body.removeChild(modal);    bluetoothConnect(function () {      console.log("starting up");      bluetoothWrite("reset();\n");      setTimeout(() => {        bluetoothWrite(`setWatch(function() {  Bluetooth.println("BTN"+"PRESS");}, BTN, {repeat:true}); digitalPulse(LED2,1,500);\n`);      }, 2000);    });  };})();