Internet of Things | Academic OSS ELChttps://academic-oss-elc.netlify.app/tags/internet-of-things/Internet of ThingsSource Themes Academic (https://sourcethemes.com/academic/)en-usWed, 01 Jul 2020 00:00:00 +0000https://academic-oss-elc.netlify.app/images/icon_hu0b7a4cb9992c9ac0e91bd28ffd38dd00_9727_512x512_fill_lanczos_center_2.pngInternet of Thingshttps://academic-oss-elc.netlify.app/tags/internet-of-things/Software Update (OTA) for Zephyrhttps://academic-oss-elc.netlify.app/talk/2020-oss-elc/software-update-ota-for-zephyr-parthiban-nallathambi-linumiz/Wed, 01 Jul 2020 00:00:00 +0000https://academic-oss-elc.netlify.app/talk/2020-oss-elc/software-update-ota-for-zephyr-parthiban-nallathambi-linumiz/<blockquote> <p>Zephyr devices can be connected in two possible (direct and in-direct) ways to the internet. Directly using Modem/WiFi/Ethernet medium or in-directly via local radio through Gateways like Linux. Upgrading such Zephyr system in the field is a complex task and must be robust, secure.</p> <p>This talk will details various possible update solutions available like UpdateHub, Hawkbit, SWUpdate for Zephyr. Using a NXP FRDM-K64F board as an example, we will discuss and demo different possible ways for updating Zephyr system.</p> </blockquote> <h2 id="agenda">Agenda</h2> <ul> <li>McuBoot</li> <li>Updatehub</li> <li>mcumgr</li> <li>ZUpdate</li> <li>ZUpdate -Hawkbit</li> <li>Future work</li> </ul> <h3 id="linux-vs-zephyra">Linux vs Zephyra</h3> <ul> <li> <p>on linux it handles both download and install</p> </li> <li> <p>for zephyr this is split into two</p> <ul> <li>download handled by application</li> <li>install is handled by MCUBoot</li> </ul> </li> <li> <p>First we focus on download.</p> </li> <li> <p>Then we look at install</p> </li> </ul> <h2 id="mcuboot">MCUBoot</h2> <ul> <li>Bootloader for Zephyr and mynewt</li> <li>integrity and security check</li> <li>multi image boot support</li> <li>softwre update heavy lifting</li> </ul> <p>MCUBoot Memory Layout</p> <ul> <li>NXP Freedom kit</li> </ul> <pre><code class="language-javascript">chosen { zephyr,code-partition = &amp;slot0_partition; }; &amp;flash0 { partitions { compatible = &quot;fixed-partitions&quot;; #address-cells = &lt;1&gt;; #size-cells = &lt;1&gt;; boot_partition: partition@0 { label = &quot;mcuboot&quot;; reg = &lt;0x00000000 0x00010000&gt;; read-only; }; slot0_partition: partition@20000 { label = &quot;image-0&quot;; reg = &lt;0x00020000 0x00060000&gt;; }; slot1_partition: partition@80000 { label = &quot;image-1&quot;; reg = &lt;0x00080000 0x00060000&gt;; }; scratch_partition: partition@e0000 { label = &quot;image-scratch&quot;; reg = &lt;0x000e0000 0x00020000&gt;; }; }; }; </code></pre> <p>Paritions</p> <ul> <li>Mcuboot</li> <li>slot0</li> <li>slot1</li> <li>scratch</li> </ul> <p>MCUBoot operation</p> <ul> <li>conditions: Interrupt swap, request swap, valid image</li> <li>Video from Youtube</li> </ul> <p>MCUBoot swap</p> <ul> <li>swap status <ul> <li>three stage operation</li> <li>slot1 to slot0</li> </ul> </li> </ul> <p>API</p> <ul> <li>image confirmed</li> <li>write image</li> <li>request upgrade</li> <li>erase</li> </ul> <p>Live share</p> <pre><code class="language-sh">west flash -d ./frdm_mcuboot/ </code></pre> <h2 id="software-update">Software Update</h2> <h3 id="updatehub">Updatehub</h3> <ul> <li>What is it?</li> <li>Polling Mode</li> <li>Manual mode</li> <li>Community vs Enterprise</li> </ul> <p>Live Share</p> <pre><code class="language-sh">~/work/west/native/zephyr/samples/net/updatehub west flash ~/work/west/native/zephyr/samples/net/updatehub west flash -bin-file ./build/zephyr/zephyr-signed.bin </code></pre> <p>Web UI</p> <ul> <li>Overview</li> <li>Devices</li> <li>Pakcages</li> <li>Rollouts</li> </ul> <p>Each rollout has</p> <ul> <li>UID, version, hardware</li> </ul> <h3 id="mcumgr">MCUmgr</h3> <ul> <li>Management library for Zephyr and mynewt</li> <li>OS and hwardware agnostic</li> </ul> <p>Layered modular design</p> <ul> <li>1: img_mgmt,fs_mgmt,log_mgmt,os_mgmt</li> <li>2: mgmt</li> <li>3: SMP</li> <li>4: BLuetooth, Shell, UDP</li> </ul> <p>Reference Screenshots</p> <ul> <li>STM32 target initial slot list</li> <li>Uploading the OTA image via the Bluetooth interface</li> <li>STM32 target initial slot list after OTA push</li> </ul> <h3 id="zupdate-architecture">ZUpdate architecture</h3> <ul> <li>Configuration Manager</li> <li>ZUpdate Core</li> <li>Download Handler <ul> <li>Hawkbit</li> <li>updatehub</li> <li>SWUpdate</li> <li>Custom</li> </ul> </li> <li>StorageHandler <ul> <li>SPI NOR</li> <li>FLash</li> <li>MMC</li> </ul> </li> <li>Low-Level Comm <ul> <li>BLE</li> <li>WiFI</li> <li>LoRa</li> </ul> </li> </ul>