Hi @DK2 ,
To the MIMXRT1170-EVKB code, you can download the related SDK:
https://mcuxpresso.nxp.com/en/builder?hw=MIMXRT1170-EVKB
More details, refer to the SDK doc:
Getting Started with MCUXpresso SDK for MIMXRT1170-EVKB.pdf
Wish it helps you!
Best Regards,
Kerry