parasquid · November 13, 2020 08:51
diff --git a/airquality.html b/airquality.html

 <!DOCTYPE html>
 <head>
  <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="HandheldFriendly" content="true">

  <style>
    button { font-size: xx-large; }
  </style>

  <script src="https://cdn.jsdelivr.net/npm/[email protected]/min/moment.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
  <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>

  <script>
    const ECO2 = 'd7e50001-0109-4306-956f-2f725ba7a85d';
    const TVOC = 'd7e50002-0109-4306-956f-2f725ba7a85d';
    const PM25 = 'd7e50003-0109-4306-956f-2f725ba7a85d';
    const PM10 = 'd7e50004-0109-4306-956f-2f725ba7a85d';
    const characteristics = {
      temperature: 'temperature',
      humidity: 'humidity',
      eCO2: ECO2,
      TVOC: TVOC,
      'pm2.5': PM25,
      'pm10': PM10,
    }

    const chartColors = {
      temperature: 'rgb(255, 99, 132)',
      humidity: 'rgb(255, 159, 64)',
      eCO2: 'rgb(255, 205, 86)',
      TVOC: 'rgb(75, 192, 192)',
      'pm2.5': 'rgb(54, 162, 235)',
      'pm10': 'rgb(153, 102, 255)',
      t: 'rgb(201, 203, 207)'
    };

    const chartConfig = {
      type: 'line',
      data: {
        datasets: []
      },
      options: {
        scales: {
          xAxes: [{
            type: 'realtime',
            realtime: {
              duration: 50000,
              delay: 500,
            }
          }],
          yAxes: [{
            id: 'A',
            type: 'linear',
            position: 'left',
          }, {
            id: 'B',
            type: 'linear',
            position: 'right',
            ticks: {
              min: 400
            },
          }],
        },
        tooltips: {
          mode: 'nearest',
          intersect: false
        },
        hover: {
          mode: 'nearest',
          intersect: false
        },
        plugins: {
          streaming: {
            frameRate: 60
          }
        }
      }
    };
    Object.keys(characteristics).forEach(label => {
      let yAxisID = 'A';
      console.log(chartColors[1])
      if(label === 'eCO2') yAxisID = 'B'
      chartConfig.data.datasets.push({
        label,
        yAxisID,
        borderColor: chartColors[label],
        fill: false,
        data: [],
      });
    })

    let device = null;
    let characteristic = null;
    let ctx = null;
    let chart = null;
  </script>
 </head>

 <body>
  <div style="width:auto; margin:auto;">
    <center>
      <button onclick="connectAndSubscribe(this)" id="connectButton">
        Connect to device
      </button>
      <button onclick="disconnect(this)" disabled id="disconnectButton">
        Disconnect from device
      </button>
    </center>
    <canvas id="myChart" style="display: block; width: auto; height: 480px;" width="auto" height="480"></canvas>
  </div>

  <script>
    ctx = document.getElementById('myChart').getContext('2d');
    chart = new Chart(ctx, chartConfig);
    const connectButton = document.getElementById('connectButton');
    const disconnectButton = document.getElementById('disconnectButton');

    const connectAndSubscribe = async(e) => {
      try {
        const services = [];
        const filters = [{services}]
        services.push('environmental_sensing');

        // summon pairing ui
        device = await navigator.bluetooth.requestDevice({filters});

        // setup callback so we can clean up on disconnection
        device.addEventListener('gattserverdisconnected', onDisconnected);

        // connect to the lightbulb
        const server = await device.gatt.connect();
        const service = await server.getPrimaryService('environmental_sensing');

        Object.keys(characteristics).forEach((name) => {
          service.getCharacteristic(characteristics[name])
            .then(c => c.startNotifications())
            .then(c => c.addEventListener(
              'characteristicvaluechanged',
              handleCharacteristicValueChanged(name)
            )
          );
        });

        connectButton.disabled = true;
        disconnectButton.disabled = false;
      } catch(err) {
        console.error({err});
      }
    };

    const onDisconnected = (event) => {
      device = null;
      characteristic = null;
      connectButton.disabled = false;
      disconnectButton.disabled = true;

      console.log("disconnected!");
    };

    const handleCharacteristicValueChanged = (name) => (event) => {
      let value = event.target.value.getUint16(0, true); // little endian
      if (name === 'temperature' || name === 'humidity') value = value / 100;

      chart.data.datasets.find((d) => d.label === name).data.push({
        x: Date.now(),
        y: value,
      })

      chart.update({ preservation: true });
    };

    const disconnect = async(e) => {
      if (device && device.gatt.connected) device.gatt.disconnect();
    };
  </script>
 </body>

 </html>

	<!DOCTYPE html>
	<head>
	<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
	<meta name="HandheldFriendly" content="true">

	<style>
	button { font-size: xx-large; }
	</style>

	<script src="https://cdn.jsdelivr.net/npm/[email protected]/min/moment.min.js"></script>
	<script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>
	<script src="https://cdn.jsdelivr.net/npm/[email protected]"></script>

	<script>
	const ECO2 = 'd7e50001-0109-4306-956f-2f725ba7a85d';
	const TVOC = 'd7e50002-0109-4306-956f-2f725ba7a85d';
	const PM25 = 'd7e50003-0109-4306-956f-2f725ba7a85d';
	const PM10 = 'd7e50004-0109-4306-956f-2f725ba7a85d';
	const characteristics = {
	temperature: 'temperature',
	humidity: 'humidity',
	eCO2: ECO2,
	TVOC: TVOC,
	'pm2.5': PM25,
	'pm10': PM10,
	}

	const chartColors = {
	temperature: 'rgb(255, 99, 132)',
	humidity: 'rgb(255, 159, 64)',
	eCO2: 'rgb(255, 205, 86)',
	TVOC: 'rgb(75, 192, 192)',
	'pm2.5': 'rgb(54, 162, 235)',
	'pm10': 'rgb(153, 102, 255)',
	t: 'rgb(201, 203, 207)'
	};

	const chartConfig = {
	type: 'line',
	data: {
	datasets: []
	},
	options: {
	scales: {
	xAxes: [{
	type: 'realtime',
	realtime: {
	duration: 50000,
	delay: 500,
	}
	}],
	yAxes: [{
	id: 'A',
	type: 'linear',
	position: 'left',
	}, {
	id: 'B',
	type: 'linear',
	position: 'right',
	ticks: {
	min: 400
	},
	}],
	},
	tooltips: {
	mode: 'nearest',
	intersect: false
	},
	hover: {
	mode: 'nearest',
	intersect: false
	},
	plugins: {
	streaming: {
	frameRate: 60
	}
	}
	}
	};
	Object.keys(characteristics).forEach(label => {
	let yAxisID = 'A';
	console.log(chartColors[1])
	if(label === 'eCO2') yAxisID = 'B'
	chartConfig.data.datasets.push({
	label,
	yAxisID,
	borderColor: chartColors[label],
	fill: false,
	data: [],
	});
	})

	let device = null;
	let characteristic = null;
	let ctx = null;
	let chart = null;
	</script>
	</head>

	<body>
	<div style="width:auto; margin:auto;">
	<center>
	<button onclick="connectAndSubscribe(this)" id="connectButton">
	Connect to device
	</button>
	<button onclick="disconnect(this)" disabled id="disconnectButton">
	Disconnect from device
	</button>
	</center>
	<canvas id="myChart" style="display: block; width: auto; height: 480px;" width="auto" height="480"></canvas>
	</div>

	<script>
	ctx = document.getElementById('myChart').getContext('2d');
	chart = new Chart(ctx, chartConfig);
	const connectButton = document.getElementById('connectButton');
	const disconnectButton = document.getElementById('disconnectButton');

	const connectAndSubscribe = async(e) => {
	try {
	const services = [];
	const filters = [{services}]
	services.push('environmental_sensing');

	// summon pairing ui
	device = await navigator.bluetooth.requestDevice({filters});

	// setup callback so we can clean up on disconnection
	device.addEventListener('gattserverdisconnected', onDisconnected);

	// connect to the lightbulb
	const server = await device.gatt.connect();
	const service = await server.getPrimaryService('environmental_sensing');

	Object.keys(characteristics).forEach((name) => {
	service.getCharacteristic(characteristics[name])
	.then(c => c.startNotifications())
	.then(c => c.addEventListener(
	'characteristicvaluechanged',
	handleCharacteristicValueChanged(name)
	)
	);
	});

	connectButton.disabled = true;
	disconnectButton.disabled = false;
	} catch(err) {
	console.error({err});
	}
	};

	const onDisconnected = (event) => {
	device = null;
	characteristic = null;
	connectButton.disabled = false;
	disconnectButton.disabled = true;

	console.log("disconnected!");
	};

	const handleCharacteristicValueChanged = (name) => (event) => {
	let value = event.target.value.getUint16(0, true); // little endian
	if (name === 'temperature' \|\| name === 'humidity') value = value / 100;

	chart.data.datasets.find((d) => d.label === name).data.push({
	x: Date.now(),
	y: value,
	})

	chart.update({ preservation: true });
	};

	const disconnect = async(e) => {
	if (device && device.gatt.connected) device.gatt.disconnect();
	};
	</script>
	</body>

	</html>