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| <div class="section" id="blinky-your-hello-world-on-redbear-nano-2"> |
| <h1>Blinky, your “Hello World!”, on RedBear Nano 2<a class="headerlink" href="#blinky-your-hello-world-on-redbear-nano-2" title="Permalink to this headline">¶</a></h1> |
| <p>This tutorial shows you how to create, build and run the Blinky |
| application on a RedBear Nano 2 board.</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="#create-a-project" id="id2">Create a Project</a></p></li> |
| <li><p><a class="reference internal" href="#create-the-targets" id="id3">Create the Targets</a></p></li> |
| <li><p><a class="reference internal" href="#build-the-target-executables" id="id4">Build the Target Executables</a></p></li> |
| <li><p><a class="reference internal" href="#sign-and-create-the-blinky-application-image" id="id5">Sign and Create the Blinky Application Image</a></p></li> |
| <li><p><a class="reference internal" href="#connect-to-the-board" id="id6">Connect to the Board</a></p></li> |
| <li><p><a class="reference internal" href="#load-the-bootloader" id="id7">Load the Bootloader</a></p> |
| <ul> |
| <li><p><a class="reference internal" href="#clear-the-write-protection-on-the-flash-memory" id="id8">Clear the Write Protection on the Flash Memory</a></p></li> |
| </ul> |
| </li> |
| <li><p><a class="reference internal" href="#load-the-blinky-application-image" id="id9">Load the Blinky Application 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> |
| <ul class="simple"> |
| <li><p>Meet the prerequisites listed in <a class="reference internal" href="blinky.html"><span class="doc">Project Blinky</span></a>.</p></li> |
| <li><p>Have a RedBear Nano 2 board.</p></li> |
| <li><p>Install a patched version of OpenOCD 0.10.0 described in <a class="reference internal" href="../../get_started/native_install/cross_tools.html"><span class="doc">Install OpenOCD</span></a>.</p></li> |
| </ul> |
| </div> |
| <div class="section" id="create-a-project"> |
| <h2><a class="toc-backref" href="#id2">Create a Project</a><a class="headerlink" href="#create-a-project" title="Permalink to this headline">¶</a></h2> |
| <p>Create a new project if you do not have an existing one. You can skip |
| this step and proceed to Create the Targets if you |
| already have a project created.</p> |
| <p>Run the following commands to create a new project:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>mkdir<span class="w"> </span>~/dev |
| <span class="gp">$ </span><span class="nb">cd</span><span class="w"> </span>~/dev |
| <span class="gp">$ </span>newt<span class="w"> </span>new<span class="w"> </span>myproj |
| <span class="go">Downloading project skeleton from apache/mynewt-blinky...</span> |
| <span class="go">Installing skeleton in myproj...</span> |
| <span class="go">Project myproj successfully created.</span> |
| <span class="gp">$ </span><span class="nb">cd</span><span class="w"> </span>myproj |
| <span class="gp">$ </span>newt<span class="w"> </span>upgrade |
| <span class="go">Downloading repository mynewt-core (commit: master) ...</span> |
| <span class="go">Downloading repository mynewt-nimble (commit: master) ...</span> |
| <span class="go">Downloading repository mcuboot (commit: master) ...</span> |
| <span class="go">Downloading repository mynewt-mcumgr (commit: master) ...</span> |
| <span class="go">Making the following changes to the project:</span> |
| <span class="go">apache-mynewt-core successfully upgraded to version 1.7.0</span> |
| <span class="go">apache-mynewt-nimble successfully upgraded to version 1.2.0</span> |
| <span class="go">mcuboot successfully upgraded to version 1.3.1</span> |
| <span class="gp">$</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="create-the-targets"> |
| <h2><a class="toc-backref" href="#id3">Create the Targets</a><a class="headerlink" href="#create-the-targets" title="Permalink to this headline">¶</a></h2> |
| <p>Create two targets for the RedBear Nano 2 board - one for the bootloader |
| and one for the Blinky application.</p> |
| <p>Run the following <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">target</span></code> commands, from your project directory, |
| to create a bootloader target. We name the target <code class="docutils literal notranslate"><span class="pre">rbnano2_boot</span></code>:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span>create<span class="w"> </span>rbnano2_boot |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>rbnano2_boot<span class="w"> </span><span class="nv">app</span><span class="o">=</span>@mcuboot/boot/mynewt |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>rbnano2_boot<span class="w"> </span><span class="nv">bsp</span><span class="o">=</span>@apache-mynewt-core/hw/bsp/rb-nano2 |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>rbnano2_boot<span class="w"> </span><span class="nv">build_profile</span><span class="o">=</span>optimized |
| </pre></div> |
| </div> |
| <p>Run the following <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">target</span></code> commands to create a target for the |
| Blinky application. We name the target <code class="docutils literal notranslate"><span class="pre">nrf52_blinky</span></code>.</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>create<span class="w"> </span>rbnano2_blinky |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>rbnano2_blinky<span class="w"> </span><span class="nv">app</span><span class="o">=</span>apps/blinky |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>rbnano2_blinky<span class="w"> </span><span class="nv">bsp</span><span class="o">=</span>@apache-mynewt-core/hw/bsp/rb-nano2 |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>rbnano2_blinky<span class="w"> </span><span class="nv">build_profile</span><span class="o">=</span>debug |
| </pre></div> |
| </div> |
| <p>You can run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">target</span> <span class="pre">show</span></code> command to verify the target |
| settings:</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>show |
| <span class="go">targets/rbnano2_blinky</span> |
| <span class="go"> app=apps/blinky</span> |
| <span class="go"> bsp=@apache-mynewt-core/hw/bsp/rb-nano2</span> |
| <span class="go"> build_profile=debug</span> |
| <span class="go">targets/rbnano2_boot</span> |
| <span class="go"> app=@mcuboot/boot/mynewt</span> |
| <span class="go"> bsp=@apache-mynewt-core/hw/bsp/rb-nano2</span> |
| <span class="go"> build_profile=optimized</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="build-the-target-executables"> |
| <h2><a class="toc-backref" href="#id4">Build the Target Executables</a><a class="headerlink" href="#build-the-target-executables" title="Permalink to this headline">¶</a></h2> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">build</span> <span class="pre">rbnano2_boot</span></code> command to build the bootloader:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>build<span class="w"> </span>rbnano2_boot |
| <span class="go">Building target targets/rbnano2_boot</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/image_rsa.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/image_ec256.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/loader.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/crypto/mbedtls/src/aes.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/image_validate.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/image_ec.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/bootutil_misc.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/mynewt/src/main.c</span> |
| |
| <span class="go"> ...</span> |
| |
| <span class="go">Archiving sys_sysinit.a</span> |
| <span class="go">Archiving util_mem.a</span> |
| <span class="go">Linking ~/dev/myproj/bin/targets/rbnano2_boot/app/boot/mynewt/mynewt.elf</span> |
| <span class="go">Target successfully built: targets/rbnano2_boot</span> |
| </pre></div> |
| </div> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">build</span> <span class="pre">rbnano2_blinky</span></code> command to build the Blinky |
| application:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>build<span class="w"> </span>rbnano2_blinky |
| <span class="go">Building target targets/rbnano2_blinky</span> |
| <span class="go">Assembling repos/apache-mynewt-core/hw/bsp/rb-nano2/src/arch/cortex_m4/gcc_startup_nrf52_split.s</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/drivers/uart/src/uart.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/cmsis-core/src/cmsis_nvic.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/bsp/rb-nano2/src/sbrk.c</span> |
| <span class="go">Compiling apps/blinky/src/main.c</span> |
| |
| <span class="go"> ...</span> |
| |
| <span class="go">Archiving sys_sysinit.a</span> |
| <span class="go">Archiving util_mem.a</span> |
| <span class="go">Linking ~/dev/myproj/bin/targets/rbnano2_blinky/app/apps/blinky/blinky.elf</span> |
| <span class="go">Target successfully built: targets/rbnano2_blinky</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="sign-and-create-the-blinky-application-image"> |
| <h2><a class="toc-backref" href="#id5">Sign and Create the Blinky Application Image</a><a class="headerlink" href="#sign-and-create-the-blinky-application-image" title="Permalink to this headline">¶</a></h2> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">create-image</span> <span class="pre">rbnano2_blinky</span> <span class="pre">1.0.0</span></code> command to create and |
| sign the application image. You may assign an arbitrary version (e.g. |
| 1.0.0) to the 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>rbnano2_blinky<span class="w"> </span><span class="m">1</span>.0.0 |
| <span class="go">App image succesfully generated: ~/dev/myproj/bin/targets/rbnano2_blinky/app/apps/blinky/blinky.img</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="connect-to-the-board"> |
| <h2><a class="toc-backref" href="#id6">Connect to the Board</a><a class="headerlink" href="#connect-to-the-board" title="Permalink to this headline">¶</a></h2> |
| <p>Connect the RedBear Nano 2 USB to a USB port on your computer. You |
| should see an orange LED light up on the board.</p> |
| </div> |
| <div class="section" id="load-the-bootloader"> |
| <h2><a class="toc-backref" href="#id7">Load the Bootloader</a><a class="headerlink" href="#load-the-bootloader" title="Permalink to this headline">¶</a></h2> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">load</span> <span class="pre">rbnano2_boot</span></code> command to load the bootloader onto |
| the board:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>load<span class="w"> </span>rbnano2_boot |
| <span class="go">Loading bootloader</span> |
| <span class="gp">$</span> |
| </pre></div> |
| </div> |
| <p><strong>Note:</strong> On Windows platforms, if you get an |
| <code class="docutils literal notranslate"><span class="pre">unable</span> <span class="pre">to</span> <span class="pre">find</span> <span class="pre">CMSIS-DAP</span> <span class="pre">device</span></code> error, you will need to download and |
| install the mbed Windows serial port driver from |
| <a class="reference external" href="https://developer.mbed.org/handbook/Windows-serial-configuration">https://developer.mbed.org/handbook/Windows-serial-configuration</a>. Follow |
| the instructions from the site to install the driver. Here are some |
| additional notes about the installation:</p> |
| <ol class="arabic simple"> |
| <li><p>The instructions indicate that the mbed Windows serial port driver is |
| not required for Windows 10. If you are using Windows 10 and get the |
| <code class="docutils literal notranslate"><span class="pre">unable</span> <span class="pre">to</span> <span class="pre">find</span> <span class="pre">CMSIS-DAP</span> <span class="pre">device</span></code> error, we recommend that you |
| install the driver.</p></li> |
| <li><p>If the driver installation fails, we recommend that you unplug the |
| board, plug it back in, and retry the installation.</p></li> |
| </ol> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">load</span> <span class="pre">rbnano2_boot</span></code> command again.</p> |
| <div class="section" id="clear-the-write-protection-on-the-flash-memory"> |
| <h3><a class="toc-backref" href="#id8">Clear the Write Protection on the Flash Memory</a><a class="headerlink" href="#clear-the-write-protection-on-the-flash-memory" title="Permalink to this headline">¶</a></h3> |
| <p>The flash memory on the RedBear Nano 2 comes write protected from the factory. If you get an |
| error loading the bootloader and you are using a brand new chip, you |
| need to clear the write protection from the debugger and then load the |
| bootloader again. Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">debug</span> <span class="pre">rbnano2_blinky</span></code> command and |
| issue the following commands at the highlighted (gdb) prompts.</p> |
| <p><strong>Note:</strong> The output of the debug session below is for Mac OS and Linux |
| platforms. On Windows, openocd and gdb are started in separate Windows |
| Command Prompt terminals, and the terminals are automatically closed |
| when you quit gdb. In addition, the output of openocd is logged to the |
| openocd.log file in your project’s base directory instead of the |
| terminal.</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>debug<span class="w"> </span>rbnano2_blinky |
| <span class="go">[~/dev/myproj/repos/apache-mynewt-core/hw/bsp/rb-nano2/rb-nano2_debug.sh ~/dev/myproj/repos/apache-mynewt-core/hw/bsp/rb-nano2 ~/dev/myproj/bin/targets/rbnano2_blinky/app/apps/blinky/blinky]</span> |
| <span class="go">Open On-Chip Debugger 0.10.0-dev-snapshot (2017-03-28-11:24)</span> |
| <span class="go">Licensed under GNU GPL v2</span> |
| |
| <span class="go"> ...</span> |
| |
| <span class="hll"><span class="gp gp-VirtualEnv">(gdb)</span> <span class="go">set {unsigned long}0x4001e504=2</span> |
| </span><span class="hll"><span class="gp gp-VirtualEnv">(gdb)</span> <span class="go">x/1wx 0x4001e504</span> |
| </span><span class="go">0x4001e504:0x00000002</span> |
| <span class="hll"><span class="gp gp-VirtualEnv">(gdb)</span> <span class="go">set {unsigned long}0x4001e50c=1</span> |
| </span><span class="go">Info : SWD DPIDR 0x2ba01477</span> |
| <span class="go">Error: Failed to read memory at 0x00009ef4</span> |
| <span class="hll"><span class="gp gp-VirtualEnv">(gdb)</span> <span class="go">x/32wx 0x00</span> |
| </span><span class="go">0x0:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="go">0x10:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="go">0x20:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="go">0x30:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="go">0x40:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="go">0x50:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="go">0x60:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="go">0x70:0xffffffff0xffffffff0xffffffff0xffffffff</span> |
| <span class="gp gp-VirtualEnv">(gdb)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="load-the-blinky-application-image"> |
| <h2><a class="toc-backref" href="#id9">Load the Blinky Application Image</a><a class="headerlink" href="#load-the-blinky-application-image" title="Permalink to this headline">¶</a></h2> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">load</span> <span class="pre">rbnano2_blinky</span></code> command to load the Blinky application image onto the board:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>load<span class="w"> </span>rbnano2_blinky |
| <span class="go">Loading app image into slot 1</span> |
| </pre></div> |
| </div> |
| <p>You should see a blue LED on the board blink!</p> |
| <p>Note: If the LED does not blink, try resetting your board.</p> |
| </div> |
| </div> |
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