Default ISR Issue Flash memory on s32k146

Kiruthika_S — Tue, 02 Sep 2025 07:36:56 GMT

Hi,

I’ve been working with Flash memory on the S32K146. Initially, I tested the Flash_Partitioning_S32K146 example program, and it worked fine. After that, I created a new application project and implemented my own program based on my requirements. However, in this new project, the code isn’t working — during the EraseAllBlock operation, it jumps to the default ISR.

Note: My main.c file works properly when used in the example project.

I have attached the code below.

Re: Default ISR Issue Flash memory on s32k146

danielmartynek — Tue, 02 Sep 2025 08:10:19 GMT

Hi @Kiruthika_S,

I don’t recommend erasing all flash blocks from within the application.

Full flash erase operation must be executed from SRAM, since the core cannot erase flash while executing code from it, due to the Read-While-Write (RWW) limitation.

In the project you posted, I only see a Debug_FLASH session. To support execution from SRAM, you’ll need to configure a Debug_SRAM session.

Also, keep in mind that partitioning should only be done once during the device’s lifetime, ideally via the programmer before the application is loaded.

Regards,

Daniel

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Default ISR Issue Flash memory on s32k146

Re: Default ISR Issue Flash memory on s32k146