This tool converts various binary files into a format that can be used by the Zephyr loader.

The loader expects to find a specific header in a fixed location in the binary file, with information about the sketch and the build options chosen by the user. The location of the header was selected so that it affects unused bytes in the ELF file format; when dealing with binary files, 16 bytes are added at the beginning to reserve space for the header.

If you have installed the Arduino IDE and the Arduino core for Zephyr, you can find the pre-built files in the .arduino15/packages/arduino/tools/ folder in your home directory. You can directly use the tool from there.

To build the tool, you need to have the Go programming language installed; make sure you have the go command available in your PATH. Then, use the go build command to build the tool for your platform.

To build the full set of binaries for all platforms, run the package_tool.sh script in the parent directory with ../package_tool.sh, or provide the path to this directory as an argument.