topic Re: s32K31x Flash writing problem in S32K

s32K31x Flash writing problem

xsong — Wed, 30 Oct 2024 08:58:28 GMT

When I was using s32k310 for boot development, I found that I could not write to the flash after 0x440000, and the PEP register of MCRS was set to 1. There would be no such problem if I operated on 0x400000-0x43ffff.

Re: s32K31x Flash writing problem

xsong — Wed, 30 Oct 2024 11:21:23 GMT

Re: s32K31x Flash writing problem

danielmartynek — Thu, 31 Oct 2024 14:07:55 GMT

Hi @xsong,

The first half of the 512KB block is protected by super sector locks.

You need to clear the corresponding super sector lock in PFCBLK0_SSPELOCK.

Please check the register before any flash operation at the sectors.

Regards,

Daniel

Re: s32K31x Flash writing problem

xsong — Fri, 01 Nov 2024 02:48:21 GMT

Hi Daniel

Thank you very much, I will try it.

Regards,

xsong

Re: s32K31x Flash writing problem

Embedded_novice — Mon, 12 May 2025 12:19:08 GMT

May I ask how you cleared this SPELOCK register to 0? I tried to clear it but it showed that it was a const modified d value