Firmware file format (.gdf)

Argon firmware file contains embedded software for Argon (servo drive). Firmware file is generated by makefirmware utily.

File format byte by byte

All multibyte integers are stored LSB first.

Header

IDString - 4 bytes, always="GDFW"

BLFileVersion - 2 bytes, current=300

TargetDriveType - 2 bytes, Argon=4000, Ion=5000

HostFWbytes - 4 bytes, number of bytes for STM32 CPU

GCFWbytes - 4 bytes, number of bytes for GraniteCore CPU or 0 if not included

Data

Data of HostFW begins. Amount of bytes is HostFWbytes

Data of GCW begins. Amount of bytes is GCFWbytes

File checksum

FileCksum - 4 bytes calculated from the current file. Simply sum of all unsigned bytes in file except CKSum itself