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<h2 id="initializing-the-console-package">Initializing the console package</h2>
<p>The console is also required by the Nimble stack. The console is currently used for log output so it needs to be initialized. For this example, we are not going to use a console receive callback. All this means is that input from the console will not be accepted by default; the developer will have to install their own handler or use one provided by another package (the shell, for example). Just like statistics, the console is initialized by calling the console initialization function <code>console_init()</code>.</p>
<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code><span style="background-color: #ffffcc"><span style="color: #633820">#include</span> <span style="color: #177500">&quot;console/console.h&quot;</span>
</span>
<span style="color: #A90D91">int</span>
<span style="color: #000000">main</span>(<span style="color: #A90D91">void</span>)
{
<span style="color: #A90D91">int</span> <span style="color: #000000">rc</span>;
<span style="color: #177500">/* Initialize OS */</span>
<span style="color: #000000">os_init</span>();
<span style="color: #177500">/* Set cputime to count at 1 usec increments */</span>
<span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">cputime_init</span>(<span style="color: #1C01CE">1000000</span>);
<span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>);
<span style="color: #177500">/* Create memory pool for Nimble packets and register with Msys */</span>
<span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">os_mempool_init</span>(<span style="color: #000000">&amp;g_mbuf_mempool</span>, <span style="color: #000000">MBUF_NUM_MBUFS</span>,
<span style="color: #000000">MBUF_MEMBLOCK_SIZE</span>, <span style="color: #000000">&amp;g_mbuf_buffer</span>[<span style="color: #1C01CE">0</span>], <span style="color: #C41A16">&quot;mbuf_pool&quot;</span>);
<span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>);
<span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">os_mbuf_pool_init</span>(<span style="color: #000000">&amp;g_mbuf_pool</span>, <span style="color: #000000">&amp;g_mbuf_mempool</span>, <span style="color: #000000">MBUF_MEMBLOCK_SIZE</span>,
<span style="color: #000000">MBUF_NUM_MBUFS</span>);
<span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>);
<span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">os_msys_register</span>(<span style="color: #000000">&amp;g_mbuf_pool</span>);
<span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>);
<span style="color: #177500">/* Initialize our device address */</span>
<span style="color: #000000">g_dev_addr</span>[<span style="color: #1C01CE">0</span>] <span style="color: #000000">=</span> <span style="color: #1C01CE">0x33</span>;
<span style="color: #000000">g_dev_addr</span>[<span style="color: #1C01CE">1</span>] <span style="color: #000000">=</span> <span style="color: #1C01CE">0x22</span>;
<span style="color: #000000">g_dev_addr</span>[<span style="color: #1C01CE">2</span>] <span style="color: #000000">=</span> <span style="color: #1C01CE">0x11</span>;
<span style="color: #000000">g_dev_addr</span>[<span style="color: #1C01CE">3</span>] <span style="color: #000000">=</span> <span style="color: #1C01CE">0xcc</span>;
<span style="color: #000000">g_dev_addr</span>[<span style="color: #1C01CE">4</span>] <span style="color: #000000">=</span> <span style="color: #1C01CE">0xbb</span>;
<span style="color: #000000">g_dev_addr</span>[<span style="color: #1C01CE">5</span>] <span style="color: #000000">=</span> <span style="color: #1C01CE">0x0a</span>;
<span style="color: #177500">/* Initialize the statistics package */</span>
<span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">stats_module_init</span>();
<span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>);
<span style="background-color: #ffffcc"> <span style="color: #177500">/* Init the console */</span>
</span><span style="background-color: #ffffcc"> <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">console_init</span>(<span style="color: #A90D91">NULL</span>);
</span><span style="background-color: #ffffcc"> <span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>);
</span>
<span style="color: #177500">/* Start the OS */</span>
<span style="color: #000000">os_start</span>();
<span style="color: #177500">/* os start should never return. If it does, this should be an error */</span>
<span style="color: #000000">assert</span>(<span style="color: #1C01CE">0</span>);
}
</code></pre></div>
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