Invalidating Cache

greenwichmeanie — Sat, 22 Nov 2025 02:03:27 GMT

We're using an S32K341. I understand that I can place DMA buffers into a noncacheable region but I'd prefer to perform DMA transfers and invalidate / clean cache by address.

We're using the RTD. Searching through the install, we can see these "by address" cache commands in files `Cache_IP.c/.h` but they weren't generated with our `.mex` file.

In the past I have used the CMSIS interface to perform this task but the code doesn't appear set up for this as far as I can tell.

For some background, we're using C++ and I've defined a class that will enforce the alignment and padding to the cache line lengths. I have a UART driver that encapsulates the RTD UART calls.

How can I access these cache functions?

Re: Invalidating Cache

PetrS — Mon, 24 Nov 2025 11:16:26 GMT

Hi,

you need to add Cache_Ip component into your project in Peripherals tool, enable CACHE support in it and finally Update code.

BR, Petr

topic Re: Invalidating Cache in S32K

Invalidating Cache

Re: Invalidating Cache