Hello @Minodora27 ,
Thanks for posting this question in community.
The RDDRONE-FMUK66 board uses the Kinetis K66 chip, but is not a general-purpose MCU product. Its usage is different from that of other series of Kinetis products. I don't have this board right now. However, I've found some materials that I think can help you solve your problem.
Product page: PX4 Robotic Drone VMU/FMU | NXP Semiconductors
Under the Documentation section of the product page, there are many reference documents available.
Celeste_Liu_0-1730774235658.png
You can refer to Getting started using the RDDRONE-FMUK66 and Programming FMUK66 for first use first.
In addition, I have also sought more information from other colleagues. The source code and bootloader of RDDRONE-FMUK66 can be found as follows:
https://nxp.gitbook.io/hovergames/downloads
https://nxp.gitbook.io/hovergames/developerguide/building-firmware
Hope the above information is helpful to you.
Best Regards,
Celeste