Building the bootloader
Instructions for building the bootloader from source using the console.
Pre-built bootloader binary
It is not (always) required to build the bootloader youself. We provide a pre-built bootloader binary on the Downloads page:
DownloadsBuilding the PX4 bootloader from source
To build the bootloader, you will need the PX4 development toolchain, which you should have setup in your development virtual machine. When the toolchain has been installed, you can run the following commands in the command line tool available on your operating system or installed through the development toolchain.
First, clone the PX4 bootloader repository:
git clone https://github.com/PX4/BootloaderThen, change your working directory to the just cloned repository:
cd Bootloader/Synchronize submodules:
git submodule sync --recursiveUpdate the submodules:
git submodule update --recursive --initBuild the RDDRONE-FMUK66 PX4 bootloader:
make fmuk66v3_bl
The bootloader is now available under Bootloader/build/fmuk66v3_bl/fmuk66v3_bl.bin
Updating your local clone of the PX4 Bootloader repository
In case you already have the bootloader repository cloned, you can pull in the most recent changes and rebuild the bootloader binary. Open a console and go to your local clone of the PX4 Bootloader repository
If you want to checkout another branch, or switch back to master branch, you can do that first.
Fetch available branches in the remote (online) repository:
git fetchCheckout another branch:
git checkout branchname
Now make sure your local repository is up-to-date with the latest upstream changes:
Pull in new changes:
git pullSynchronize submodules:
git submodule sync --recursiveUpdate the submodules:
git submodule update --recursive --init
You can now rebuild the RDDRONE-FMUK66 PX4 bootloader: make fmuk66v3_bl
Writing the bootloader
Instructions for writing the bootloader to the board are availabe in the user guide. More detailed instructions for programming binaries onto the FMU are available in the developer guide.
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