a over the serial interface.</p>

<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">embedded_hal</span> <span class="kw">as</span> <span class="ident">hal</span>;
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">futures</span>;
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">void</span>;

<span class="attribute">#[<span class="ident">macro_use</sp