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<section id="title-slide">
<h1 class="title">IoT Workshop</h1>
<p class="author">Trygve Laugstøl <trygvis@trygvis.io></p>
</section>
<section><section id="what-is-iot" class="title-slide slide level1"><h1>What is IoT</h1></section><section id="what-is-iot-1" class="slide level2">
<h2>What is IoT</h2>
<ul>
<li>Not “a computer connected to the internet”
<ul>
<li>Then it is really just another computer connected to the internet</li>
</ul></li>
<li>Must be something else
<ul>
<li>It is simply devices that are resource constrained
<ul>
<li>Usually in more than one way</li>
</ul></li>
</ul></li>
<li>Autonomous operation, the connection might not be permanent</li>
</ul>
</section><section id="what-differentiates-a-computer-from-an-iot-device" class="slide level2">
<h2>What differentiates a computer from an IoT device?</h2>
<ul>
<li>Constrained in (one or more of):
<ul>
<li>Memory</li>
<li>CPU</li>
<li>Network bandwidth and/or latency</li>
<li>Storage</li>
</ul></li>
</ul>
</section></section>
<section><section id="going-back-to-basics" class="title-slide slide level1"><h1>Going back to basics</h1></section><section id="what-is-the-internet-again" class="slide level2">
<h2>What is the internet again?</h2>
</section><section id="osi-model" class="slide level2">
<h2>OSI model</h2>
<ol type="1">
<li>Physical Layer</li>
<li>Data Link Layer</li>
<li>Network Layer</li>
<li>Transport Layer</li>
<li>Session Layer</li>
<li>Presentation Layer</li>
<li>Application Layer</li>
</ol>
<ul>
<li><a href="https://en.wikipedia.org/wiki/OSI_model">Wikipedia: OSI model</a></li>
<li><a href="https://en.wikipedia.org/wiki/OSI_model#Examples">Wikipedia: OSI model#Examples</a></li>
</ul>
<aside class="notes">
<p>Følges ikke veldig slavisk</p>
</aside>
</section><section id="layer-1-physical-layer" class="slide level2">
<h2>Layer 1: Physical Layer</h2>
<ul>
<li>10BASE5, 10BASE2</li>
<li>10BASE-T / 100BASE-TX / 1000BASE-TX</li>
<li>802.11a/b/g/n PHY</li>
<li>RS-232</li>
</ul>
<aside class="notes">
<p>Huber og switcher (som gjør en slags routing) er ikke en av disse lagene. Mere en implementasjonsdetalj. RS-232 sin signallering brukes i <em>alle</em> MCUer, mange har flere porter tilgjengelige. Kun signallering, ikke spenningsnivåer. Mange støtter veldig høye datarater (>= 1Mbit/s)</p>
</aside>
</section><section id="layer-2-data-link-layer" class="slide level2">
<h2>Layer 2: Data Link Layer</h2>
<ul>
<li>Ethernet</li>
<li>WiFi</li>
<li>Bluetooth</li>
<li>Token Ring</li>
</ul>
</section><section id="layer-3-network-layer" class="slide level2">
<h2>Layer 3: Network Layer</h2>
<ul>
<li>IP</li>
<li>ICMP</li>
<li>IPX</li>
</ul>
</section><section id="layer-4-transport-layer" class="slide level2">
<h2>Layer 4: Transport Layer</h2>
<ul>
<li>TCP</li>
<li>UDP</li>
</ul>
</section><section id="layer-5-session-layer" class="slide level2">
<h2>Layer 5: Session Layer</h2>
<ul>
<li>“sockets”</li>
<li>NetBIOS</li>
</ul>
</section><section id="layer-6-presentation-layer" class="slide level2">
<h2>Layer 6: Presentation Layer</h2>
<ul>
<li>SSL</li>
</ul>
</section><section id="layer-7-application-layer" class="slide level2">
<h2>Layer 7: Application Layer</h2>
<ul>
<li>HTTP</li>
<li>DNS</li>
<li>(everything else..)</li>
<li>MQTT</li>
</ul>
</section><section id="section" class="slide level2">
<h2></h2>
</section></section>
<section><section id="notes" class="title-slide slide level1"><h1>Notes</h1></section><section id="assignments" class="slide level2">
<h2>Assignments</h2>
<ul>
<li>Measure round trip time/latency. Measure UDP, TCP. Measure when the packet size is greater than the MTU</li>
</ul>
</section></section>
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