a href="https://docs.rs/nb/0.1.0/nb/macro.block.html"><code>block!</code></a>,
<a href="https://docs.rs/nb/0.1.0/nb/index.html#how-to-use-this-crate"><code>try_nb!</code></a> and <a href="https://docs.rs/nb/0.1.0/nb/index.html#how-to-use-this-crate"><code>await!</code></a> macros respectively.</p>
<h3 id="blocking-mode" class="section-header"><a href="#blocking-mode">Blocking mode</a></h3>
<p>An example of sending a string over the serial interface in a blocking
fashion:</p>

<div class="example-wrap"><pre 