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| <div class="section" id="over-the-air-image-upgrade"> |
| <h1>Over-the-Air Image Upgrade<a class="headerlink" href="#over-the-air-image-upgrade" title="Permalink to this headline">¶</a></h1> |
| <p>Mynewt OS supports over-the-air image upgrades. This tutorial shows you |
| how to use the newtmgr tool to upgrade an image on a device over BLE |
| communication.</p> |
| <p>To support over-the-air image upgrade over BLE, a device must be running |
| a Mynewt application that has newtmgr image management over BLE |
| transport enabled. For this tutorial, we use the |
| <span class="xref std std-doc">bleprph</span> application, which |
| includes image management over BLE functionality, on an nRF52-DK board. |
| If you prefer to use a different BLE application, see <span class="xref std std-doc">Enable Newt |
| Manager in any app</span> to enable newtmgr |
| image management over BLE transport support in your application.</p> |
| <p><strong>Note:</strong> Over-the-air upgrade via newtmgr BLE transport is supported on |
| Mac OS and Linux. It is not supported on Windows platforms.</p> |
| <div class="contents local topic" id="contents"> |
| <ul class="simple"> |
| <li><p><a class="reference internal" href="#prerequisites" id="id1">Prerequisites</a></p></li> |
| <li><p><a class="reference internal" href="#reducing-the-log-level" id="id2">Reducing the Log Level</a></p></li> |
| <li><p><a class="reference internal" href="#upgrading-an-image-on-a-device" id="id3">Upgrading an Image on a Device</a></p></li> |
| <li><p><a class="reference internal" href="#step-1-creating-a-newtmgr-connection-profile" id="id4">Step 1: Creating a Newtmgr Connection Profile</a></p></li> |
| <li><p><a class="reference internal" href="#step-2-uploading-an-image-to-the-device" id="id5">Step 2: Uploading an Image to the Device</a></p></li> |
| <li><p><a class="reference internal" href="#step-3-testing-the-image" id="id6">Step 3: Testing the Image</a></p></li> |
| <li><p><a class="reference internal" href="#step-4-confirming-the-image" id="id7">Step 4: Confirming the Image</a></p></li> |
| </ul> |
| </div> |
| <div class="section" id="prerequisites"> |
| <h2><a class="toc-backref" href="#id1">Prerequisites</a><a class="headerlink" href="#prerequisites" title="Permalink to this headline">¶</a></h2> |
| <p>Ensure that you meet the following prerequisites:</p> |
| <ul class="simple"> |
| <li><p>Have Internet connectivity to fetch remote Mynewt components.</p></li> |
| <li><p>Have a computer that supports Bluetooth to communicate with the board |
| and to build a Mynewt application.</p></li> |
| <li><p>Have a Micro-USB cable to connect the board and the computer.</p></li> |
| <li><p>Have a Nordic nRF52-DK Development Kit - PCA 10040</p></li> |
| <li><p>Install the <span class="xref std std-doc">Segger JLINK software and documentation |
| pack</span>.</p></li> |
| <li><p>Install the newt tool and toolchains (See <a class="reference internal" href="../../get_started/index.html"><span class="doc">Setup & Get Started</span></a>).</p></li> |
| <li><p>Read the Mynewt OS <a class="reference internal" href="../../concepts.html"><span class="doc">Concepts</span></a> |
| section.</p></li> |
| <li><p>Read the <a class="reference internal" href="../../os/modules/bootloader/bootloader.html"><span class="doc">Secure Bootloader</span></a> section |
| and understand the Mynewt bootloader concepts.</p></li> |
| <li><p>Build and load the <strong>bleprph</strong> application on to an nRF52-DK board |
| via a serial connection. See <a class="reference internal" href="../ble/bleprph/bleprph.html"><span class="doc">BLE Peripheral |
| App</span></a>.</p></li> |
| </ul> |
| </div> |
| <div class="section" id="reducing-the-log-level"> |
| <h2><a class="toc-backref" href="#id2">Reducing the Log Level</a><a class="headerlink" href="#reducing-the-log-level" title="Permalink to this headline">¶</a></h2> |
| <p>You need to build your application with log level set to INFO or lower. |
| The default log level for the <strong>bleprph</strong> app is set to DEBUG. The extra |
| logging causes the communication to timeout. Perform the following to |
| reduce the log level to INFO, build, and load the application.</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span>amend<span class="w"> </span>myperiph<span class="w"> </span><span class="nv">syscfg</span><span class="o">=</span><span class="s2">"LOG_LEVEL=1"</span> |
| <span class="gp">$ </span>newt<span class="w"> </span>build<span class="w"> </span>myperiph |
| <span class="gp">$ </span>newt<span class="w"> </span>create-image<span class="w"> </span>myperiph<span class="w"> </span><span class="m">1</span>.0.0 |
| <span class="gp">$ </span>newt<span class="w"> </span>load<span class="w"> </span>myperiph |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="upgrading-an-image-on-a-device"> |
| <h2><a class="toc-backref" href="#id3">Upgrading an Image on a Device</a><a class="headerlink" href="#upgrading-an-image-on-a-device" title="Permalink to this headline">¶</a></h2> |
| <p>Once you have an application with |
| newtmgr image management with BLE transport support running on a device, |
| you can use the newtmgr tool to upgrade an image over-the-air.</p> |
| <p>You must perform the following steps to upgrade an image:</p> |
| <p>Step 1: Create a newtmgr connection profile to communicate with the |
| device over BLE. Step 2: Upload the image to the secondary slot (slot 1) |
| on the device. Step 3: Test the image. Step 4: Confirm and make the |
| image permanent.</p> |
| <p>See the <a class="reference internal" href="../../os/modules/bootloader/bootloader.html"><span class="doc">Secure Bootloader</span></a> section for |
| more information on the bootloader, image slots, and boot states.</p> |
| </div> |
| <div class="section" id="step-1-creating-a-newtmgr-connection-profile"> |
| <h2><a class="toc-backref" href="#id4">Step 1: Creating a Newtmgr Connection Profile</a><a class="headerlink" href="#step-1-creating-a-newtmgr-connection-profile" title="Permalink to this headline">¶</a></h2> |
| <p>The <strong>bleprph</strong> application sets and advertises <code class="docutils literal notranslate"><span class="pre">nimble-bleprph</span></code> as its bluetooth |
| device address. Run the <code class="docutils literal notranslate"><span class="pre">newtmgr</span> <span class="pre">conn</span> <span class="pre">add</span></code> command to create a newtmgr |
| connection profile that uses this peer address to communicate with the |
| device over BLE:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newtmgr<span class="w"> </span>conn<span class="w"> </span>add<span class="w"> </span>mybleprph<span class="w"> </span><span class="nv">type</span><span class="o">=</span>ble<span class="w"> </span><span class="nv">connstring</span><span class="o">=</span><span class="s2">"peer_name=nimble-bleprph"</span> |
| <span class="go">Connection profile mybleprph successfully added</span> |
| </pre></div> |
| </div> |
| <p>Verify that the newtmgr tool can communicate with the device and check |
| the image status on the device:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newtmgr<span class="w"> </span>image<span class="w"> </span>list<span class="w"> </span>-c<span class="w"> </span>mybleprph |
| <span class="go">Images:</span> |
| <span class="go"> slot=0</span> |
| <span class="go"> version: 1.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags: active confirmed</span> |
| <span class="go"> hash: b8d17c77a03b37603cd9f89fdcfe0ba726f8ddff6eac63011dee2e959cc316c2</span> |
| <span class="go">Split status: N/A (0)</span> |
| </pre></div> |
| </div> |
| <p>The device only has an image loaded on the primary slot (slot 0). It |
| does not have an image loaded on the secondary slot (slot 1).</p> |
| </div> |
| <div class="section" id="step-2-uploading-an-image-to-the-device"> |
| <h2><a class="toc-backref" href="#id5">Step 2: Uploading an Image to the Device</a><a class="headerlink" href="#step-2-uploading-an-image-to-the-device" title="Permalink to this headline">¶</a></h2> |
| <p>We create an image with version 2.0.0 for the bleprph application from the <code class="docutils literal notranslate"><span class="pre">myperiph</span></code> target and |
| upload the new image. You can upload a different image.</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>create-image<span class="w"> </span>myperiph<span class="w"> </span><span class="m">2</span>.0.0 |
| <span class="go">App image succesfully generated: ~/dev/myproj/bin/targets/myperiph/app/apps/bleprph/bleprph.img</span> |
| </pre></div> |
| </div> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newtmgr</span> <span class="pre">image</span> <span class="pre">upload</span></code> command to upload the image:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newtmgr<span class="w"> </span>image<span class="w"> </span>upload<span class="w"> </span>-c<span class="w"> </span>mybleprph<span class="w"> </span>~/dev/myproj/bin/targets/myperiph/app/apps/bleprph/bleprph.img |
| <span class="go">215</span> |
| <span class="go">429</span> |
| <span class="go">642</span> |
| <span class="go">855</span> |
| <span class="go">1068</span> |
| <span class="go">1281</span> |
| |
| <span class="go">...</span> |
| |
| <span class="go">125953</span> |
| <span class="go">126164</span> |
| <span class="go">126375</span> |
| <span class="go">126586</span> |
| <span class="go">126704</span> |
| <span class="go">Done</span> |
| </pre></div> |
| </div> |
| <p>The numbers indicate the number of bytes that the newtmgr tool has |
| uploaded.</p> |
| <p>Verify that the image uploaded to the secondary slot on the device |
| successfully:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newtmgr<span class="w"> </span>image<span class="w"> </span>list<span class="w"> </span>-c<span class="w"> </span>mybleprph |
| <span class="go">Images:</span> |
| <span class="go"> slot=0</span> |
| <span class="go"> version: 1.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags: active confirmed</span> |
| <span class="go"> hash: b8d17c77a03b37603cd9f89fdcfe0ba726f8ddff6eac63011dee2e959cc316c2</span> |
| <span class="go"> slot=1</span> |
| <span class="go"> version: 2.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags:</span> |
| <span class="go"> hash: 291ebc02a8c345911c96fdf4e7b9015a843697658fd6b5faa0eb257a23e93682</span> |
| <span class="go">Split status: N/A (0)</span> |
| </pre></div> |
| </div> |
| <p>The device now has the uploaded image in the secondary slot (slot 1).</p> |
| </div> |
| <div class="section" id="step-3-testing-the-image"> |
| <h2><a class="toc-backref" href="#id6">Step 3: Testing the Image</a><a class="headerlink" href="#step-3-testing-the-image" title="Permalink to this headline">¶</a></h2> |
| <p>The image is uploaded to the secondary |
| slot but is not yet active. You must run the <code class="docutils literal notranslate"><span class="pre">newtmgr</span> <span class="pre">image</span> <span class="pre">test</span></code> |
| command to set the image status to <strong>pending</strong> and reboot the device. |
| When the device reboots, the bootloader copies this image to the primary |
| slot and runs the image.</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newtmgr<span class="w"> </span>image<span class="w"> </span><span class="nb">test</span><span class="w"> </span>-c<span class="w"> </span>mybleprph<span class="w"> </span>291ebc02a8c345911c96fdf4e7b9015a843697658fd6b5faa0eb257a23e93682 |
| <span class="go">Images:</span> |
| <span class="go"> slot=0</span> |
| <span class="go"> version: 1.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags: active confirmed</span> |
| <span class="go"> hash: b8d17c77a03b37603cd9f89fdcfe0ba726f8ddff6eac63011dee2e959cc316c2</span> |
| <span class="go"> slot=1</span> |
| <span class="go"> version: 2.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags: pending</span> |
| <span class="go"> hash: 291ebc02a8c345911c96fdf4e7b9015a843697658fd6b5faa0eb257a23e93682</span> |
| <span class="go">Split status: N/A (0)</span> |
| </pre></div> |
| </div> |
| <p>The status of the image in the secondary slot is now set to <strong>pending</strong>.</p> |
| <p>Power the device OFF and ON and run the <code class="docutils literal notranslate"><span class="pre">newtmgr</span> <span class="pre">image</span> <span class="pre">list</span></code> command |
| to check the image status on the device after the reboot:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newtmgr<span class="w"> </span>image<span class="w"> </span>list<span class="w"> </span>-c<span class="w"> </span>mybleprph |
| <span class="go">Images:</span> |
| <span class="go"> slot=0</span> |
| <span class="go"> version: 2.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags: active</span> |
| <span class="go"> hash: 291ebc02a8c345911c96fdf4e7b9015a843697658fd6b5faa0eb257a23e93682</span> |
| <span class="go"> slot=1</span> |
| <span class="go"> version: 1.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags: confirmed</span> |
| <span class="go"> hash: b8d17c77a03b37603cd9f89fdcfe0ba726f8ddff6eac63011dee2e959cc316c2</span> |
| <span class="go">Split status: N/A (0)</span> |
| </pre></div> |
| </div> |
| <p>The uploaded image is now active and running in the primary slot. The |
| image, however, is not confirmed. The confirmed image is in the |
| secondary slot. On the next reboot, the bootloader reverts to using the |
| confirmed image. It copies the confirmed image to the primary slot and |
| runs the image when the device reboots. You need to confirm and make the |
| uploaded image in the primary slot permanent.</p> |
| </div> |
| <div class="section" id="step-4-confirming-the-image"> |
| <h2><a class="toc-backref" href="#id7">Step 4: Confirming the Image</a><a class="headerlink" href="#step-4-confirming-the-image" title="Permalink to this headline">¶</a></h2> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newtmgr</span> <span class="pre">image</span> <span class="pre">confirm</span></code> command to confirm and make the |
| uploaded image permanent. Since the uploaded image is currently the |
| active image, you can confirm the image setup without specifying the |
| image hash value in the command:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newtmgr<span class="w"> </span>image<span class="w"> </span>confirm<span class="w"> </span>-c<span class="w"> </span>mybleprph |
| <span class="go">Images:</span> |
| <span class="go"> slot=0</span> |
| <span class="go"> version: 2.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags: active confirmed</span> |
| <span class="go"> hash: 291ebc02a8c345911c96fdf4e7b9015a843697658fd6b5faa0eb257a23e93682</span> |
| <span class="go"> slot=1</span> |
| <span class="go"> version: 1.0.0</span> |
| <span class="go"> bootable: true</span> |
| <span class="go"> flags:</span> |
| <span class="go"> hash: b8d17c77a03b37603cd9f89fdcfe0ba726f8ddff6eac63011dee2e959cc316c2</span> |
| <span class="go">Split status: N/A (0)</span> |
| </pre></div> |
| </div> |
| <p>The uploaded image is now the active and confirmed image. You have |
| successfully upgraded an image over-the-air.</p> |
| </div> |
| </div> |
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