pxt-calliope/docs/reference/bluetooth/start-temperature-service.html

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2017-08-19 17:16:35 +02:00
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<title>calliope mini - Blocks / Javascript editor - calliope</title>
<meta name="Description" content="A Blocks / JavaScript code editor for the calliope mini." />
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<meta name="twitter:description" content="A Blocks / JavaScript code editor for the calliope mini." />
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<meta property="og:description" content="A Blocks / JavaScript code editor for the calliope mini." />
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href="/pxt-calliope/docs/reference/bluetooth/start-temperature-service.md.html">start-temperature-service.md</a>
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<h1 id="bluetooth-temperature-service">Bluetooth Temperature Service</h1>
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<p>For another device like a smartphone to use any of the Bluetooth “services” which the Calliope mini has, it must first be <a href="/pxt-calliope/docs/reference/bluetooth/bluetooth-pairing.html">paired with the Calliope mini</a>. Once paired, the other device may connect to the Calliope mini and exchange data relating to many of the Calliope minis features.</p>
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<p>A Calliope mini is able to provide a rough measure of the current environmental temperature. Its an approximation only as in fact the temperature value is inferred from the temperature of its main processor. The Bluetooth temperature service allows another device such as a smartphone to wirelessly find out the Calliope minis current temperature reading or to receive a constant stream of temperature data values. Temperature values are expressed in degrees celsius.</p>
<p>Using the Bluetooth temperature service you could turn your smartphone or tablet into a graphical thermometer using your Calliope mini as the sensor. </p>
<p>No additional code is needed on the Calliope mini to use the Bluetooth temperature service from another device.</p>
<pre><code class="lang-sig">bluetooth.startTemperatureService();</code></pre>
<h3 id="example-starting-the-bluetooth-temperature-service">Example: Starting the Bluetooth temperature service</h3>
<p>The following code shows the Bluetooth temperature service being started:</p>
<pre><code class="lang-blocks">bluetooth.startTemperatureService();</code></pre>
<h3 id="video-temperature-service-demo-starts-at-3-05">Video - Temperature service demo - Starts at 3:05</h3>
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<h3 id="advanced">Advanced</h3>
<p>For more advanced information on the Calliope mini Bluetooth temperature service including information on using a smartphone, see the <a href="http://lancaster-university.github.io/microbit-docs/ble/temperature-service/">Lancaster University Calliope mini runtime technical documentation</a></p>
<h3 id="see-also">See also</h3>
<p><a href="/pxt-calliope/docs/reference/bluetooth/about-bluetooth.html">About Bluetooth</a>, <a href="http://lancaster-university.github.io/microbit-docs/ble/profile/">Calliope mini Bluetooth profile overview </a>, <a href="http://lancaster-university.github.io/microbit-docs/resources/bluetooth/microbit-profile-V1.9-Level-2.pdf">Calliope mini Bluetooth profile reference</a>, <a href="http://bluetooth-mdw.blogspot.co.uk/p/bbc-microbit.html">Bluetooth on Calliope mini resources</a>, <a href="https://www.bluetooth.com">Bluetooth SIG</a></p>
<pre><code class="lang-package">bluetooth</code></pre>
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<p style="margin-top:1em"><a href="https://github.com/Microsoft/pxt-calliope/blob/master/docs/docs/reference/bluetooth/start-temperature-service.md"><i class="write icon"></i>Edit this page on GitHub</a></p>
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