S32K358 Application Core Shutdown

[darknite2023]

Hi.

I have a question regarding the shutdown sequence of an application core.

Per section 47.1.7 of the S32K3XXX Ref Manual, the flowchart looks as follows:

Regarding the 3rd step:

• Request core to enter WFI by writing to corresponding core registers
   

It is not clear to me how to achieve this. Which register should I be using to indicate to the Application Core that it needs to issue a wfi instruction? If it is not a register, how is this information communicated to the corresponding application core when step 2 of the shutdown process states "Stop any ongoing core communication"?

Thanks in advance.

[bryan_brauchler · Accepted solution]

Hello,

Several mechanisms for core-to-core communication exist on S32K3. You may use the MU or core to core interrupts. These are described in chapters 40 and 7. You may also be interested in the Inter-Platform Communication Framework which supports messaging between cores on S32K3.

Best,

Bryan

[darknite2023]

Hi Bryan. Thanks for the quick response.