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| <div class="section" id="blinky-your-hello-world-on-stm32f303-discovery"> |
| <h1>Blinky, your “Hello World!”, on STM32F303 Discovery<a class="headerlink" href="#blinky-your-hello-world-on-stm32f303-discovery" title="Permalink to this headline">¶</a></h1> |
| <div class="section" id="objective"> |
| <h2>Objective<a class="headerlink" href="#objective" title="Permalink to this headline">¶</a></h2> |
| <p>Learn how to use packages from a default application repository of |
| Mynewt to build your first <em>Hello World</em> application (Blinky) on a |
| target board. Once built using the <em>newt</em> tool, this application will |
| blink the LED lights on the target board.</p> |
| <p>Create a project with a simple app that blinks an LED on the stmf303 |
| discovery board. In the process import some external libraries into your |
| project. Download the application to the target and watch it blink!</p> |
| </div> |
| <div class="section" id="what-you-need"> |
| <h2>What you need<a class="headerlink" href="#what-you-need" title="Permalink to this headline">¶</a></h2> |
| <ul class="simple"> |
| <li><p>Discovery kit with STM32F303VC MCU</p></li> |
| <li><p>Laptop running Mac OSX.</p></li> |
| <li><p>It is assumed you have already installed newt tool.</p></li> |
| <li><p>It is assumed you already installed native tools as described |
| <a class="reference external" href="../get_started/native_tools.html">here</a></p></li> |
| </ul> |
| <p>Also, we assume that you’re familiar with UNIX shells. Let’s gets |
| started!</p> |
| </div> |
| <div class="section" id="create-a-project"> |
| <h2>Create a project<a class="headerlink" href="#create-a-project" title="Permalink to this headline">¶</a></h2> |
| <p>Create a new project to hold your work. For a deeper understanding, you |
| can read about project creation in <a class="reference external" href="../get_started/project_create.html">Get Started – Creating Your First |
| Project</a> or just follow the |
| commands below.</p> |
| <p>If you’ve already created a project from another tutorial, you can |
| re-use that project.</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>$ mkdir ~/dev |
| $ cd ~/dev |
| $ newt new myproj |
| Downloading project skeleton from apache/incubator-mynewt-blinky... |
| Installing skeleton in myproj... |
| Project myproj successfully created. |
| |
| $ cd myproj |
| </pre></div> |
| </div> |
| <p><strong>Note:</strong> Don’t forget to change into the <code class="docutils literal notranslate"><span class="pre">myproj</span></code> directory.</p> |
| </div> |
| <div class="section" id="import-external-stm32f3-library-support"> |
| <h2>Import External STM32F3 Library support<a class="headerlink" href="#import-external-stm32f3-library-support" title="Permalink to this headline">¶</a></h2> |
| <p>The STM32F303 support for Mynewt lives in an external repository. It’s |
| necessary to add another repository to the project. To do this, edit the |
| file <code class="docutils literal notranslate"><span class="pre">project.yml</span></code> in the root directory of your project <code class="docutils literal notranslate"><span class="pre">myproj</span></code></p> |
| <p>This requires two changes to this file.</p> |
| <ol class="arabic simple"> |
| <li><p>You must define the properties of the external repository that you |
| want to add</p></li> |
| <li><p>You must include the repository in your project.</p></li> |
| </ol> |
| <p>Edit the file <code class="docutils literal notranslate"><span class="pre">project.yml</span></code> with your favorite editor and add the |
| following repository details in the file (after the core repository). |
| This gives newt the information to contact the repository and extract |
| its contents. In this case, the repository is on github in the |
| <code class="docutils literal notranslate"><span class="pre">runtimeco</span></code> collection. Its name is <code class="docutils literal notranslate"><span class="pre">mynewt-stm32f3</span></code> and we will |
| accept any version up to the latest. You can look at the contents |
| <a class="reference external" href="https://github.com/runtimeco/mynewt_stm32f3">here</a>.</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>repository.mynewt_stm32f3: |
| type: github |
| vers: 0-latest |
| user: runtimeco |
| repo: mynewt_stm32f3 |
| </pre></div> |
| </div> |
| <p>In the same file, add the following highlighted line to the |
| <code class="docutils literal notranslate"><span class="pre">project.repositories</span></code> variable. This tells newt to download the |
| repository contents into your project.</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>project.repositories: |
| - apache-mynewt-core |
| - mynewt_stm32f3 |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="install-dependencies"> |
| <h2>Install dependencies<a class="headerlink" href="#install-dependencies" title="Permalink to this headline">¶</a></h2> |
| <p>Now you can install this into the project using:</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>$ newt install -v |
| Downloading repository description for apache-mynewt-core... success! |
| ... |
| apache-mynewt-core successfully installed version 0.7.9-none |
| ... |
| Downloading repository description for mynewt_stm32f3... success! |
| Downloading repository mynewt_stm32f3 |
| ... |
| Resolving deltas: 100% (65/65), done. |
| Checking connectivity... done. |
| mynewt_stm32f3 successfully installed version 0.0.0-none |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="create-targets"> |
| <h2>Create targets<a class="headerlink" href="#create-targets" title="Permalink to this headline">¶</a></h2> |
| <p>Create two targets to build using the stmf3 board support package and |
| the app blinky example from mynewt. The output of these commands are not |
| shown here for brevity.</p> |
| <p>The first target is the application image itself. The second target is |
| the bootloader which allows you to upgrade your mynewt applications.</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>$ newt target create stmf3_blinky |
| $ newt target set stmf3_blinky build_profile=optimized |
| $ newt target set stmf3_blinky bsp=@mynewt_stm32f3/hw/bsp/stm32f3discovery |
| $ newt target set stmf3_blinky app=apps/blinky |
| |
| $ newt target create stmf3_boot |
| $ newt target set stmf3_boot app=@apache-mynewt-core/apps/boot |
| $ newt target set stmf3_boot bsp=@mynewt_stm32f3/hw/bsp/stm32f3discovery |
| $ newt target set stmf3_boot build_profile=optimized |
| |
| $ newt target show |
| |
| targets/stmf3_blinky |
| app=apps/blinky |
| bsp=@mynewt_stm32f3/hw/bsp/stm32f3discovery |
| build_profile=optimized |
| targets/stmf3_boot |
| app=apps/boot |
| bsp=@mynewt_stm32f3/hw/bsp/stm32f3discovery |
| build_profile=optimized |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="build-the-target-executables"> |
| <h2>Build the target executables<a class="headerlink" href="#build-the-target-executables" title="Permalink to this headline">¶</a></h2> |
| <p>To build the images, use the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">build</span></code> command below.</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>$ newt build stmf3_blinky |
| ... |
| Archiving stm32f3discovery.a |
| Linking blinky.elf |
| App successfully built: ~/dev/myproj/bin/stmf3_blinky/apps/blinky/blinky.elf |
| |
| $ newt build stmf3_boot |
| Compiling log_shell.c |
| Archiving log.a |
| Linking boot.elf |
| App successfully built: ~/dev/myproj/bin/stmf3_boot/apps/boot/boot.elf |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="sign-and-create-the-blinky-application-image"> |
| <h2>Sign and create the blinky application image<a class="headerlink" href="#sign-and-create-the-blinky-application-image" title="Permalink to this headline">¶</a></h2> |
| <p>You must sign and version your application image to download it using |
| newt. Use the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">create-image</span></code> command to perform this action. Here |
| we assign this image an arbitrary version <code class="docutils literal notranslate"><span class="pre">1.2.3</span></code>.</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>stmf3_blinky<span class="w"> </span><span class="m">1</span>.2.3 |
| <span class="go">App image successfully generated: ~/dev/myproj/bin/stmf3_blinky/apps/blinky/blinky.img</span> |
| <span class="go">Build manifest:~/dev/myproj/bin/stmf3_blinky/apps/blinky/manifest.json</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="configure-the-hardware"> |
| <h2>Configure the hardware<a class="headerlink" href="#configure-the-hardware" title="Permalink to this headline">¶</a></h2> |
| <p>The STM32F3DISCOVERY board includes an ST-LINK/V2 embedded debug tool |
| interface that will be used to program/debug the board. To program the |
| MCU on the board, simply plug in the two jumpers on CN4, as shown in the |
| picture in red. If you want to learn more about the board you will find |
| the User Manual at |
| <a class="reference external" href="http://www.st.com/st-web-ui/static/active/jp/resource/technical/document/user_manual/DM00063382.pdf">http://www.st.com/st-web-ui/static/active/jp/resource/technical/document/user_manual/DM00063382.pdf</a></p> |
| <ul class="simple"> |
| <li><p><img alt="STMdiscovery" src="os/tutorials/pics/STM32f3discovery_connector.png" /></p></li> |
| </ul> |
| </div> |
| <div class="section" id="download-the-images"> |
| <h2>Download the Images<a class="headerlink" href="#download-the-images" title="Permalink to this headline">¶</a></h2> |
| <p>Use the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">load</span></code> command to download the images to the target |
| board.</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>$ newt -v load stmf3_boot |
| $ newt -v load stmf3_blinky |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="watch-the-led-blink"> |
| <h2>Watch the LED blink<a class="headerlink" href="#watch-the-led-blink" title="Permalink to this headline">¶</a></h2> |
| <p>Congratulations! You have built, downloaded, and run your first |
| application using mynewt for the stm32f3 discovery board. One of the |
| LEDs on the LED wheel should be blinking at 1 Hz.</p> |
| </div> |
| <div class="section" id="want-more"> |
| <h2>Want more?<a class="headerlink" href="#want-more" title="Permalink to this headline">¶</a></h2> |
| <p>Want to make your board do something a little more exciting with the |
| LEDs? Then try making the modifications to the Blinky app to make it a |
| <a class="reference external" href="pin-wheel-mods.html">pin-wheel app</a> and you can light all the LEDs in |
| a pin-wheel fashion.</p> |
| <p>We have more fun tutorials for you to get your hands dirty. Be bold and |
| try other Blinky-like <a class="reference external" href="../tutorials/nRF52.html">tutorials</a> or try |
| enabling additional functionality such as <a class="reference external" href="project-slinky.html">remote |
| comms</a> on the current board.</p> |
| <p>If you see anything missing or want to send us feedback, please do so by |
| signing up for appropriate mailing lists on our <a class="reference external" href="../../community.html">Community |
| Page</a>.</p> |
| <p>Keep on hacking and blinking!</p> |
| </div> |
| </div> |
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