S32KのトピックRe: offline MISR signature calculation for Flash Array Integrity Check

offline MISR signature calculation for Flash Array Integrity Check

sandeepSingh18606 — Thu, 15 Jan 2026 12:01:42 GMT

I am working on implementing the Flash Array Integrity Check on the S32K311 controller. My goal is to calculate the MISR signature value offline for a generated .bin file and store it in NVM for comparison.

I have attempted to calculate the MISR value from the .bin file using the method described in the reference manual; however, the results do not match the values observed in the UM0-UM9 registers. Could you please provide a simple C code formula to read data from a .bin file and generate the MISR value for a specific memory section?

Additionally, I would appreciate clarification on the role of the MISR[288] bit, as its function is currently unclear.

Best regards,

Sandeep Singh

Re: offline MISR signature calculation for Flash Array Integrity Check

danielmartynek — Mon, 19 Jan 2026 06:34:33 GMT

Hi @sandeepSingh18606,

Let me check if we have a solution to that.

The MISR is 288 bits wide, implemented as UM0–UM9, MISR[288] is just the MSB.

Regards,

Daniel

Re: offline MISR signature calculation for Flash Array Integrity Check

danielmartynek — Thu, 05 Feb 2026 14:11:57 GMT

Hello @sandeepSingh18606,

Thank you for your patience. I would like to inform you that at this moment, there is no available offline solution for this functionality.
However, we have submitted a request to our software tools team to review the possibility of developing such an option. The evaluation is still in progress, and we do not yet have a conclusion or a timeline for a potential solution.

Regards,

Daniel