S32K118 header difference

wang_yuchen — Wed, 21 Jan 2026 09:13:49 GMT

Hi All,

I'm trying to transfer my code from keil to S32DS. In S32DS I could not use systick register. I find my header from keil is very different to the header in Studio. I wonder why is this happenning. Thanks.

the memory mapping in keil:

the memory mapping in S32DS:

Re: S32K118 header difference

Julián_AragónM — Wed, 28 Jan 2026 16:24:00 GMT

Hi @wang_yuchen,

Keil projects typically use ARM CMSIS headers, which define the core peripherals like the image you've shared, while S32DS projects use NXP’s device headers (generated from SVD) which implements the SCB and other device-specific typedefs.

The file you showed from S32DS describes the register layout for the SCB. The SysTick is a separate peripheral located in another header.

You can see inside the S32K144.h, there is an include for S32K144_SYSTICK.h, which shows the register description you are looking for:

S32K144_SYSTICK.h header

Keep in mind that in most Cortex‑M S32 devices, SysTick is present at the standard address.

Best regards,
Julián

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S32K118 header difference

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