communicate with OBC via I2C

<ul>
<li>Upon a wired command from the OBC, shutdown the two converters for a few seconds and enable them again</li>
<li>If no heartbeat (wired connection) is received from the OBC for a certain period of time, shutdown the two converters for a few seconds</li>
</ul>

<h3>NEEDS TO BE OMEGA RELIABLE</h3>