I'm trying to upload the PX4 F/W on STM32F446 instead of STM32F427 (Pixhawk & PixRacer).
STM32F446 has small flash size (512KB), so I'm trying to reduce F/W size.
Firstly, I deleted some components in cmake file. After that, I'm trying to revise rcS file. (Firmware/ROMFS/px4fmu_common/init.d/rcS)
I can understand the source code in this file approximatively, but if there is a manual, document or website, it will be very helpful to me.
Please let me know any information about this.