topic S32K3 C40 IP Hardware Fault in S32K

S32K3 C40 IP Hardware Fault

francescovico — Tue, 23 Sep 2025 13:12:08 GMT

I'm working on a Bootloader that reside in Code Flash Block 0 (From 0x400000 to 0x4FFFFF).

Any erase/write inside this block cause an Hard Fault even with:

C40_Ip_MainInterfaceSectorErase
C40_Ip_MainInterfaceSectorEraseStatus
C40_Ip_MainInterfaceWrite
C40_Ip_MainInterfaceWriteStatus

In SRAM.

Only erase/write in Code Flash Block 1 or 2 or 3 it's allowed.

My Application must reside in Block 1 ?

The residual code flash Block 0 it's lost?

Regards, Francesco.

Re: S32K3 C40 IP Hardware Fault

VaneB — Tue, 23 Sep 2025 16:45:01 GMT

Hi @francescovico

To rule out a potential Read-While-Write Event Error (RWE), it is recommended to put flash operations into SRAM. This approach helps to prevent such errors.

Please refer following thread, which includes an example code.

S32K312_C40_Ip_SRAM_RTD_500_DS35

BR, VaneB

Re: S32K3 C40 IP Hardware Fault

francescovico — Wed, 24 Sep 2025 07:37:14 GMT

Hi @VaneB ,

I have solved the problem putting also the functions below in SRAM:

-SchM_Enter_Mem_43_INFLS_MEM_EXCLUSIVE_AREA_01

- ....

-SchM_Exit_Mem_43_INFLS_MEM_EXCLUSIVE_AREA_23

- All C40_Ip functions

Unfortunally these functions are in RTD and at each code generation by ConfigTools the functions are restored at original version.

Regards, Francesco.

Re: S32K3 C40 IP Hardware Fault

VaneB — Wed, 24 Sep 2025 18:05:52 GMT

Hi @francescovico

I am glad to hear the issue has been solved.

Any changes made to the RTD files will be automatically reverted to their original state each time ConfigTools performs an update.