m expanded "><a href="../chapter_4/index.html"><strong aria-hidden="true">4.</strong> Setting Up Development Environment</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../chapter_4/4.1/index.html"><strong aria-hidden="true">4.1.</strong> ESP-IDF Overview</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../chapter_4/4.1/4.1.1.html"><strong aria-hidden="true">4.1.1.</strong> ESP-IDF Versions</a></li><li class="chapter-item expanded "><a href="../chapter_