S32KのトピックRe: S32K312 FEE

S32K312 FEE

Z_Z — Tue, 26 Aug 2025 02:18:49 GMT

The S32K312 FEE module stores 200 bytes of data before the MCU enters sleep mode. There is a phenomenon where the data cannot be stored sometimes (after calling the storage function, a 1000ms delay has been added). Could you please suggest some ways to increase the success rate of data storage?

Re: S32K312 FEE

lukaszadrapa — Tue, 26 Aug 2025 07:30:24 GMT

Hi @Z_Z

If there are many data records and especially if a swap occurs during the write, it can take more time than 1s. You can try to update the data for test purposes without any timeout and measure the real duration in your setup.

To speed up the process and to avoid swap operation during the update, there's a feature called immediate block update. Search for "immediate data usage" phrase in the Fee user manual for details.

Regards,

Lukas

Re: S32K312 FEE

Z_Z — Wed, 27 Aug 2025 07:37:43 GMT

Thank you for your reply. May I ask if it is possible to determine whether the write operation was successful by using the "Fee_GetJobResult()" function?

Re: S32K312 FEE

lukaszadrapa — Wed, 27 Aug 2025 08:42:15 GMT

Yes, you are supposed to check the result by this function. You can see in Fee example:

And here's description from the user manual: