Michael Stapelberg
283 lines
22 KiB
HTML
283 lines
22 KiB
HTML
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<meta name="description" content="gokrazy has limited support for Bluetooth. The usual Bluetooth utilities (bluez) have a lot of dependencies that are not available on gokrazy and those are out of scope here. But the basic Bluetooth hardware are supported on low level. This is useful in particular for applications using Bluetooth LE natively in Go.
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To enable Bluetooth in gokrazy, first add the github.com/gokrazy/bluetooth package to your gokrazy instance:
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gok add github.com/gokrazy/bluetooth The github.com/gokrazy/bluetooth package loads the appropriate kernel modules and firmware required.">
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<meta name="twitter:title" content="Using Bluetooth :: gokrazy">
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<meta name="twitter:description" content="gokrazy has limited support for Bluetooth. The usual Bluetooth utilities (bluez) have a lot of dependencies that are not available on gokrazy and those are out of scope here. But the basic Bluetooth hardware are supported on low level. This is useful in particular for applications using Bluetooth LE natively in Go.
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To enable Bluetooth in gokrazy, first add the github.com/gokrazy/bluetooth package to your gokrazy instance:
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gok add github.com/gokrazy/bluetooth The github.com/gokrazy/bluetooth package loads the appropriate kernel modules and firmware required.">
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<meta property="og:title" content="Using Bluetooth :: gokrazy">
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<meta property="og:description" content="gokrazy has limited support for Bluetooth. The usual Bluetooth utilities (bluez) have a lot of dependencies that are not available on gokrazy and those are out of scope here. But the basic Bluetooth hardware are supported on low level. This is useful in particular for applications using Bluetooth LE natively in Go.
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To enable Bluetooth in gokrazy, first add the github.com/gokrazy/bluetooth package to your gokrazy instance:
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gok add github.com/gokrazy/bluetooth The github.com/gokrazy/bluetooth package loads the appropriate kernel modules and firmware required.">
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<meta property="article:section" content="Configuration">
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<meta itemprop="name" content="Using Bluetooth :: gokrazy">
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<meta itemprop="description" content="gokrazy has limited support for Bluetooth. The usual Bluetooth utilities (bluez) have a lot of dependencies that are not available on gokrazy and those are out of scope here. But the basic Bluetooth hardware are supported on low level. This is useful in particular for applications using Bluetooth LE natively in Go.
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To enable Bluetooth in gokrazy, first add the github.com/gokrazy/bluetooth package to your gokrazy instance:
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gok add github.com/gokrazy/bluetooth The github.com/gokrazy/bluetooth package loads the appropriate kernel modules and firmware required.">
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<li><a href="#example-program">Example program</a></li>
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<ol class="topbar-breadcrumbs breadcrumbs highlightable" itemscope itemtype="http://schema.org/BreadcrumbList"><li itemscope itemtype="https://schema.org/ListItem" itemprop="itemListElement" class=""><a itemprop="item" href="/index.html"><span itemprop="name">gokrazy Go appliances</span></a><meta itemprop="position" content="1"> > </li><li itemscope itemtype="https://schema.org/ListItem" itemprop="itemListElement" class=""><a itemprop="item" href="/userguide/index.html"><span itemprop="name">Configuration</span></a><meta itemprop="position" content="2"> > </li><li itemscope itemtype="https://schema.org/ListItem" itemprop="itemListElement" class=""><span itemprop="name">Using Bluetooth</span><meta itemprop="position" content="3"></li>
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<span class="btn cstyle button link noborder notitle interactive"><a href="https://github.com/gokrazy/gokrazy/tree/master/website/content/userguide/bluetooth.md" rel="external" title="Edit (CTRL+ALT+w)"><i class="fa-fw fas fa-pen"></i></a></span>
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<h1 id="using-bluetooth">Using Bluetooth</h1>
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<p>gokrazy has limited support for Bluetooth. The usual Bluetooth utilities (bluez)
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have a lot of dependencies that are not available on gokrazy and those are out
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of scope here. But the basic Bluetooth hardware are supported on low level. This
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is useful in particular for applications using Bluetooth LE natively in Go.</p>
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<p>To enable Bluetooth in gokrazy, first add the
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<code>github.com/gokrazy/bluetooth</code> package to your gokrazy instance:</p>
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<div class="highlight actionbar-wrapper wrap-code" dir="auto"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>gok add github.com/gokrazy/bluetooth</span></span></code></pre></div>
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<p>The <code>github.com/gokrazy/bluetooth</code> package loads the appropriate kernel modules
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and firmware required.</p>
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<h2 id="example-program">Example program<span class="btn cstyle anchor copyanchor scrollanchor link noborder notitle interactive"><button type="button" title="Copy link to clipboard"><i class="fa-fw fas fa-link fa-lg"></i></button></span></h2>
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<p>As demo we’re using the <a href="https://gitlab.com/jtaimisto/bluewalker" rel="external">bluewalker</a> Bluetooth LE scanner utility to show that
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Bluetooth is working:</p>
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<div class="highlight actionbar-wrapper wrap-code" dir="auto"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>gok add gitlab.com/jtaimisto/bluewalker</span></span></code></pre></div>
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<p>Then, open your instance’s <code>config.json</code> in your editor:</p>
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<div class="highlight actionbar-wrapper wrap-code" dir="auto"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>gok edit</span></span></code></pre></div>
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<p>And configure <a href="/userguide/package-config/index.html#flags">Package config: Command-line flags</a>:</p>
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<div class="highlight actionbar-wrapper wrap-code" dir="auto"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;display:grid;"><code class="language-json" data-lang="json"><span style="display:flex;"><span>{
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</span></span><span style="display:flex;"><span> <span style="color:#f92672">"Hostname"</span>: <span style="color:#e6db74">"blue"</span>,
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</span></span><span style="display:flex;"><span> <span style="color:#f92672">"Packages"</span>: [
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</span></span><span style="display:flex;"><span> <span style="color:#e6db74">"github.com/gokrazy/fbstatus"</span>,
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</span></span><span style="display:flex;"><span> <span style="color:#e6db74">"github.com/gokrazy/hello"</span>,
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</span></span><span style="display:flex;"><span> <span style="color:#e6db74">"github.com/gokrazy/serial-busybox"</span>,
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</span></span><span style="display:flex;"><span> <span style="color:#e6db74">"github.com/gokrazy/breakglass"</span>,
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</span></span><span style="display:flex;"><span> <span style="color:#e6db74">"gitlab.com/jtaimisto/bluewalker"</span>
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</span></span><span style="display:flex;"><span> ],
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</span></span><span style="display:flex;"><span> <span style="color:#f92672">"PackageConfig"</span>: {
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</span></span><span style="display:flex; background-color:#3c3d38"><span> <span style="color:#f92672">"gitlab.com/jtaimisto/bluewalker"</span>: {
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</span></span><span style="display:flex; background-color:#3c3d38"><span> <span style="color:#f92672">"CommandLineFlags"</span>: [
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</span></span><span style="display:flex; background-color:#3c3d38"><span> <span style="color:#e6db74">"-device=hci0"</span>
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</span></span><span style="display:flex; background-color:#3c3d38"><span> ]
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</span></span><span style="display:flex; background-color:#3c3d38"><span> }
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</span></span><span style="display:flex;"><span> }
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</span></span><span style="display:flex;"><span>}</span></span></code></pre></div>
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<p>Then, deploy as usual:</p>
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<div class="highlight actionbar-wrapper wrap-code" dir="auto"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>gok update</span></span></code></pre></div>
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<p>Once deployed, you can see Bluetooth events being received in the bluewalker
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output.</p>
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<p><a href="#R-image-e69e2cd7ae8b8c8ea618fe70ee2ebffe" class="lightbox-link"><img alt="Bluewalker output in gokrazy web interface" class="lazy lightbox figure-image" loading="lazy" src="/img/2022-03-09-bluetooth-bluewalker.png" style="height: auto;width: auto;"></a>
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<a href="javascript:history.back();" class="lightbox-back" id="R-image-e69e2cd7ae8b8c8ea618fe70ee2ebffe"><img alt="Bluewalker output in gokrazy web interface" class="lazy lightbox lightbox-image" loading="lazy" src="/img/2022-03-09-bluetooth-bluewalker.png"></a></p>
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<li class="" data-nav-url="/quickstart/index.html"><a class="padding" href="/quickstart/index.html"><b>1. </b>Quickstart</a></li>
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<li class="" data-nav-url="/platforms/index.html"><a class="padding" href="/platforms/index.html"><b>2. </b>Supported platforms</a></li>
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<li class="parent " data-nav-url="/userguide/index.html"><a class="padding" href="/userguide/index.html"><b>3. </b>Configuration</a><ul id="R-subsections-74b4df3a3d9365853f09e9f1dfe7bbba" class="collapsible-menu">
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<li class="" data-nav-url="/userguide/instance-config/index.html"><a class="padding" href="/userguide/instance-config/index.html">Instance Config Reference</a></li>
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<li class="" data-nav-url="/userguide/package-config/index.html"><a class="padding" href="/userguide/package-config/index.html">Package config: flags, environment variables, extra files</a></li>
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<li class="" data-nav-url="/userguide/tls-for-untrusted-networks/index.html"><a class="padding" href="/userguide/tls-for-untrusted-networks/index.html">Using TLS in untrusted networks</a></li>
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<li class="active " data-nav-url="/userguide/bluetooth/index.html"><a class="padding" href="/userguide/bluetooth/index.html">Using Bluetooth</a></li>
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<li class="" data-nav-url="/userguide/permanent-data/index.html"><a class="padding" href="/userguide/permanent-data/index.html">Access permanent data</a></li>
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<li class="" data-nav-url="/userguide/nvme-disk/index.html"><a class="padding" href="/userguide/nvme-disk/index.html">NVMe disk (Pi 5)</a></li>
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