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| <div class="section" id="blinky-your-hello-world-on-stm32f4-discovery"> |
| <h1>Blinky, your “Hello World!”, on STM32F4-Discovery<a class="headerlink" href="#blinky-your-hello-world-on-stm32f4-discovery" title="Permalink to this headline">¶</a></h1> |
| <p>This tutorial shows you how to create, build, and run the Blinky |
| application on the STM32F4-Discovery board.</p> |
| <div class="section" id="prerequisites"> |
| <h2>Prerequisites<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 STM32F4-Discovery board.</p></li> |
| <li><p>Have a USB type A to Mini-B cable.</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>Create a Project<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">apache-mynewt-core successfully upgraded to version 1.7.0</span> |
| <span class="gp">$</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="create-the-targets"> |
| <h2>Create the Targets<a class="headerlink" href="#create-the-targets" title="Permalink to this headline">¶</a></h2> |
| <p>Create two targets for the STM32F4-Discovery board - one for the |
| bootloader and one for the Blinky application.</p> |
| <p>Run the following <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">target</span></code> commands, from your project directory, |
| to create a bootloader target. We name the target <code class="docutils literal notranslate"><span class="pre">stm32f4disc_boot</span></code>:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span>create<span class="w"> </span>stm32f4disc_boot |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>stm32f4disc_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>stm32f4disc_boot<span class="w"> </span><span class="nv">bsp</span><span class="o">=</span>@apache-mynewt-core/hw/bsp/stm32f4discovery |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>stm32f4disc_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">stm32f4disc_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>stm32f4disc_blinky |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>stm32f4disc_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>stm32f4disc_blinky<span class="w"> </span><span class="nv">bsp</span><span class="o">=</span>@apache-mynewt-core/hw/bsp/stm32f4discovery |
| <span class="gp">$ </span>newt<span class="w"> </span>target<span class="w"> </span><span class="nb">set</span><span class="w"> </span>stm32f4disc_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/my_blinky_sim</span> |
| <span class="go"> app=apps/blinky</span> |
| <span class="go"> bsp=@apache-mynewt-core/hw/bsp/native</span> |
| <span class="go"> build_profile=debug</span> |
| <span class="go">targets/stm32f4disc_blinky</span> |
| <span class="go"> app=apps/blinky</span> |
| <span class="go"> bsp=@apache-mynewt-core/hw/bsp/stm32f4discovery</span> |
| <span class="go"> build_profile=debug</span> |
| <span class="go">targets/stm32f4disc_boot</span> |
| <span class="go"> app=@mcuboot/boot/mynewt</span> |
| <span class="go"> bsp=@apache-mynewt-core/hw/bsp/stm32f4discovery</span> |
| <span class="go"> build_profile=optimized</span> |
| </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>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">build</span> <span class="pre">stm32f4disc_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>stm32f4disc_boot |
| <span class="go">Building target targets/stm32f4disc_boot</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/image_ec.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/image_ec256.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">Compiling repos/mcuboot/boot/bootutil/src/image_rsa.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/image_validate.c</span> |
| <span class="go">Compiling repos/mcuboot/boot/bootutil/src/loader.c</span> |
| |
| <span class="go"> ...</span> |
| |
| <span class="go">Archiving sys_flash_map.a</span> |
| <span class="go">Archiving sys_mfg.a</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/stm32f4disc_boot/app/boot/mynwet/mynewt.elf</span> |
| <span class="go">Target successfully built: targets/stm32f4disc_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">stm32f4disc_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>stm32f4disc_blinky |
| <span class="go">Building target targets/stm32f4disc_blinky</span> |
| <span class="go">Compiling apps/blinky/src/main.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/bsp/stm32f4discovery/src/sbrk.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/bsp/stm32f4discovery/src/system_stm32f4xx.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/bsp/stm32f4discovery/src/hal_bsp.c</span> |
| <span class="go">Assembling repos/apache-mynewt-core/hw/bsp/stm32f4discovery/src/arch/cortex_m4/startup_STM32F40x.s</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/drivers/uart/src/uart.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/drivers/uart/uart_hal/src/uart_hal.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/hal/src/hal_common.c</span> |
| <span class="go">Compiling repos/apache-mynewt-core/hw/hal/src/hal_flash.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/stm32f4disc_blinky/app/apps/blinky/blinky.elf</span> |
| <span class="go">Target successfully built: targets/stm32f4disc_blinky</span> |
| </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>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">create-image</span> <span class="pre">stm32f4disc_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>stm32f4disc_blinky<span class="w"> </span><span class="m">1</span>.0.0 |
| <span class="go">App image succesfully generated: ~/dev/myproj/bin/targets/stm32f4disc_blinky/app/apps/blinky/blinky.img</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="connect-to-the-board"> |
| <h2>Connect to the Board<a class="headerlink" href="#connect-to-the-board" title="Permalink to this headline">¶</a></h2> |
| <p>Connect a USB type A to Mini-B cable from your computer to the port the |
| board indicated on the diagram:</p> |
| <div class="figure align-default"> |
| <img alt="../../_images/stm32f4_disc.jpg" src="../../_images/stm32f4_disc.jpg" /> |
| </div> |
| <p>You should see the small PWR red LED light up.</p> |
| </div> |
| <div class="section" id="load-the-bootloader-and-the-blinky-application-image"> |
| <h2>Load the Bootloader and the Blinky Application Image<a class="headerlink" href="#load-the-bootloader-and-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">stm32f4disc_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>stm32f4disc_boot |
| <span class="go">Loading bootloader</span> |
| </pre></div> |
| </div> |
| <p>Note: If you are using Windows and get an <code class="docutils literal notranslate"><span class="pre">open</span> <span class="pre">failed</span></code> or |
| <code class="docutils literal notranslate"><span class="pre">no</span> <span class="pre">device</span> <span class="pre">found</span></code> error, you will need to install the usb driver. |
| Download <a class="reference external" href="http://zadig.akeo.ie">Zadig</a> and run it:</p> |
| <ul class="simple"> |
| <li><p>Select Options > List All Devices.</p></li> |
| <li><p>Select <code class="docutils literal notranslate"><span class="pre">STM32</span> <span class="pre">STLink</span></code> from the drop down menu.</p></li> |
| <li><p>Select the <code class="docutils literal notranslate"><span class="pre">WinUSB</span></code> driver.</p></li> |
| <li><p>Click Install Driver.</p></li> |
| <li><p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">load</span> <span class="pre">stm32f4disc_boot</span></code> command again.</p></li> |
| </ul> |
| <p>Note: If you are running Linux and get an <code class="docutils literal notranslate"><span class="pre">open</span> <span class="pre">failed</span></code> message, there |
| are two common issues with this board. If you have a board produced |
| before mid-2016, it is likely that you have an older version of the |
| ST-LINK programmer. To correct this, open the |
| <code class="docutils literal notranslate"><span class="pre">repos/apache-mynewt-core/hw/bsp/stm32f4discovery/f4discovery.cfg</span></code> |
| file in a text editor, and change the line:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">source [find interface/stlink-v2-1.cfg]</span> |
| </pre></div> |
| </div> |
| <p>to:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">source [find interface/stlink-v2.cfg]</span> |
| </pre></div> |
| </div> |
| <p>If you receive an error like |
| <code class="docutils literal notranslate"><span class="pre">libusb_open()</span> <span class="pre">failed</span> <span class="pre">with</span> <span class="pre">LIBUSB_ERROR_ACCESS</span></code>, it means that your |
| <code class="docutils literal notranslate"><span class="pre">udev</span></code> rules are not correctly set up for this device. You can find |
| some example <code class="docutils literal notranslate"><span class="pre">udev</span></code> rules for ST-LINK programmers |
| <a class="reference external" href="https://github.com/texane/stlink/tree/master/etc/udev/rules.d">here</a>.</p> |
| <p>Run the <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">load</span> <span class="pre">stm32f4disc_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>stm32f4disc_blinky |
| <span class="go">Loading app image into slot 1</span> |
| </pre></div> |
| </div> |
| <p>You should see the small green LD4 LED on the board blink!</p> |
| <p>Note: If the LED does not blink, try resetting your board.</p> |
| <p>If you want to erase the flash and load the image again, start a debug |
| session, and enter <code class="docutils literal notranslate"><span class="pre">mon</span>  <span class="pre">stm32f2x</span> <span class="pre">mass_erase</span> <span class="pre">0</span></code> at the gdb prompt:</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>stm32f4disc_blinky |
| <span class="go">[~/dev/myproj/repos/apache-mynewt-core/hw/bsp/stm32f4discovery/stm32f4discovery_debug.sh ~/dev/myproj/repos/apache-mynewt-core/hw/bsp/stm32f4discovery ~/dev/myproj/bin/targets/stm32f4disc_blinky/app/apps/blinky/blinky]</span> |
| <span class="go">Open On-Chip Debugger 0.10.0</span> |
| <span class="go">Licensed under GNU GPL v2</span> |
| <span class="go">For bug reports, read</span> |
| <span class="go"> http://openocd.org/doc/doxygen/bugs.html</span> |
| <span class="go">Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD</span> |
| <span class="go">adapter speed: 2000 kHz</span> |
| <span class="go">adapter_nsrst_delay: 100</span> |
| <span class="go">none separate</span> |
| <span class="go">Info : Unable to match requested speed 2000 kHz, using 1800 kHz</span> |
| <span class="go">Info : Unable to match requested speed 2000 kHz, using 1800 kHz</span> |
| <span class="go">Info : clock speed 1800 kHz</span> |
| <span class="go">Info : STLINK v2 JTAG v25 API v2 SWIM v14 VID 0x0483 PID 0x374B</span> |
| <span class="go">Info : using stlink api v2</span> |
| <span class="go">Info : Target voltage: 2.881129</span> |
| <span class="go">Info : stm32f4x.cpu: hardware has 6 breakpoints, 4 watchpoints</span> |
| <span class="go">target halted due to debug-request, current mode: Thread</span> |
| |
| <span class="go"> ...</span> |
| |
| <span class="go">Reading symbols from ~/dev/myproj/bin/targets/stm32f4disc_blinky/app/apps/blinky/blinky.elf...done.</span> |
| <span class="go">target halted due to debug-request, current mode: Thread</span> |
| <span class="go">xPSR: 0x41000000 pc: 0x08021e90 psp: 0x20002290</span> |
| <span class="go">Info : accepting 'gdb' connection on tcp/3333</span> |
| <span class="go">Info : device id = 0x10076413</span> |
| <span class="go">Info : flash size = 1024kbytes</span> |
| <span class="go">0x08021e90 in __WFI () at repos/apache-mynewt-core/hw/cmsis-core/src/ext/core_cmInstr.h:342</span> |
| <span class="go">342 __ASM volatile ("wfi");</span> |
| <span class="gp gp-VirtualEnv">(gdb)</span> <span class="go">mon stm32f2x mass_erase 0</span> |
| <span class="go">stm32x mass erase complete</span> |
| <span class="go">stm32x mass erase complete</span> |
| <span class="gp gp-VirtualEnv">(gdb)</span> |
| </pre></div> |
| </div> |
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