https://pranav083.github.io/tags/pocketbeagle/Recent content in PocketBeagle on Pranav KumarHugo -- gohugo.ioenCopyright © 2016–2030, Pranav KumarTue, 20 Aug 2019 00:00:00 +0530https://pranav083.github.io/post/project/gsoc-beaglebone-pru/Tue, 20 Aug 2019 00:00:00 +0530https://pranav083.github.io/post/project/gsoc-beaglebone-pru/ <p><strong>Google Summer of Code 2019 · BeagleBoard.org</strong></p> <p>My first sustained open-source contribution, and the work that pulled me toward low-level systems.</p> <hr> <h2 id="the-problem">The problem</h2> <p>The PocketBeagle is small, capable, and short on GPIO. Many embedded projects need more digital I/O than the header exposes, and the standard answer — shift registers — is well understood in principle but poorly documented in practice for this board, particularly for <em>bidirectional</em> operation.</p> <h2 id="bidirectional-io">Bidirectional I/O</h2> <p>I built and documented a set of interfacing configurations against the BeagleBone and PocketBeagle:</p>