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KevinOConnor 2022-05-10 15:48:56 +00:00
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Bootloaders.html
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STM32F103/STM32F072 with MSC bootloader
</a>
</li>
<li class="md-nav__item">
<a href="#stm32f103stm32f0x2-with-canboot-bootloader" class="md-nav__link">
STM32F103/STM32F0x2 with CanBoot bootloader
</a>
</li>
</ul>
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STM32F103/STM32F072 with MSC bootloader
</a>
</li>
<li class="md-nav__item">
<a href="#stm32f103stm32f0x2-with-canboot-bootloader" class="md-nav__link">
STM32F103/STM32F0x2 with CanBoot bootloader
</a>
</li>
</ul>
@ -1901,6 +1915,36 @@ with something like:</p>
<p>The bootloader can be activated by pressing the reset button of the board twice.
As soon as the bootloader is activated, the board appears as a USB flash drive
onto which the klipper.bin file can be copied.</p>
<h3 id="stm32f103stm32f0x2-with-canboot-bootloader">STM32F103/STM32F0x2 with CanBoot bootloader<a class="headerlink" href="#stm32f103stm32f0x2-with-canboot-bootloader" title="Permanent link">&para;</a></h3>
<p>The <a href="https://github.com/Arksine/CanBoot">CanBoot</a> bootloader provides an option
for uploading Klipper firmware over the CANBUS. The bootloader itself is
derived from Klipper's source code. Currently CanBoot supports the STM32F103,
STM32F042, and STM32F072 models.</p>
<p>It is recommended to use a ST-Link Programmer to flash CanBoot, however it
should be possible to flash using <code>stm32flash</code> on STM32F103 devices, and
<code>dfu-util</code> on STM32F042/STM32F072 devices. See the previous sections in this
document for instructions on these flashing methods, substituting <code>canboot.bin</code>
for the file name where appropriate. The CanBoot repo linked above provides
instructions for building the bootloader.</p>
<p>The first time CanBoot has been flashed it should detect that no application
is present and enter the bootloader. If this doesn't occur it is possible to
enter the bootloader by pressing the reset button twice in succession.</p>
<p>The <code>flash_can.py</code> utility supplied in the <code>lib/canboot</code> folder may be used to
upload Klipper firmware. The device UUID is necessary to flash. If you do not
have a UUID it is possible to query nodes in currently running the bootloader:</p>
<div class="highlight"><pre><span></span><code>python3 flash_can.py -q
</code></pre></div>
<p>This will return UUIDs for all connected nodes not currently assigned a UUID.
This should include all nodes currently in the bootloader.</p>
<p>Once you have a UUID, you may upload firmware with following command:</p>
<div class="highlight"><pre><span></span><code>python3 flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u aabbccddeeff
</code></pre></div>
<p>Where <code>aabbccddeeff</code> is replaced by your UUID. Note that the <code>-i</code> and <code>-f</code>
options may be omitted, they default to <code>can0</code> and <code>~/klipper/out/klipper.bin</code>
respectively.</p>
<p>When building Klipper for use with CanBoot, select the 8 KiB Bootloader option.</p>
<h2 id="stm32f4-micro-controllers-skr-pro-11">STM32F4 micro-controllers (SKR Pro 1.1)<a class="headerlink" href="#stm32f4-micro-controllers-skr-pro-11" title="Permanent link">&para;</a></h2>
<p>STM32F4 microcontrollers come equipped with a built-in system bootloader
capable of flashing over USB (via DFU), 3.3v Serial, and various other