How to choose to use LMEM caches or CORE caches?

[Chris-Sun]

I am currently using the Cache feature of S32K3x in my RTD.

The Cache is divided into two types: CACHE_IP_LMEM (LMEM caches) and CACHE_IP_CORE (CORE caches). Different APIs are used to enable, disable, clean, and invalidate the Cache.

However, I have not been able to find the specific implementation of the APIs when using CACHE_IP_LMEM (such as Cache_Ip_Invalidate).

1. What is the difference between LMEM caches and CORE caches in S32K3x? Where can I find an explanation for each?

2. How do I choose between using LMEM caches or CORE caches in S32K3x?

3. Where can I find the specific API implementation for using LMEM caches in RTD?"

The version information:

S32DS: 3.5

RTD: S32K3_RTD_3_0_0_D2303_ASR_REL_4_7_REV_0000_20230331

Best regards,
Chris

[lukaszadrapa · Accepted solution]

Hi @Chris-Sun 

This is just a compatible design of RTD driver to cover other chips‘ Lmem module. There is no Lmem in S32K3.

You can find in the source files:

Regards,

Lukas

[Chris-Sun]

Hi @lukaszadrapa 

Thank you for your response to my post.

Your response resolved my confusion.

Best regards,
Chris