>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">nb</span>;
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">void</span>;

<span class="kw">use</span> <span class="ident">hal</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">void</span>::<span class="ident">Void</