topic Re: S32K3 Read/Write Flash with C40-Driver in S32K

S32K3 Read/Write Flash with C40-Driver

JoDo — Thu, 02 Dec 2021 08:33:45 GMT

Hi,

I want to read and write some data to the internal flash of the S32K344. I use the C40 Dreiver for this and the example from the S32DS. If I do delete -> write -> read once, it works fine and I can see the change immediately in the memory browser. But the second time it seems to have no effect in flash memory. If I restart the code with the debugger, I can see the changed data in flash from the second write.

What else needs to be taken care of so that each erase->write operation immediately writes the data to flash memory?

Regards,

JoDo

Re: S32K3 Read/Write Flash with C40-Driver

danielmartynek — Mon, 06 Dec 2021 13:27:56 GMT

Hi @JoDo,

I had to copy your code to C40_Ip_Example_S32K344 from RTD 1.0.0 2010_10 version as I don't have the older version that you use.

Anyway, without any modification, I can see the data in the memory after the second write.

What debugger do you use?

Can you update to the new RTD?

Regards,

Daniel

Re: S32K3 Read/Write Flash with C40-Driver

Guofred — Mon, 06 Dec 2021 15:15:37 GMT

thanks for sharing this information. it looks the flash had been written successful in the second time after restarting the code with the debugger, i also think due to the software version or debugger setting cause this issue.

Re: S32K3 Read/Write Flash with C40-Driver

danielmartynek — Tue, 07 Dec 2021 10:35:59 GMT

Hi @Guofred,

Since I can't reproduce it, I'm not sure I full understand the issue.

You read the flash with core and the debugger.

Do they both show the same issue, or is it just the debugger (memory view)?

Thanks,

BR, Daniel

Re: S32K3 Read/Write Flash with C40-Driver

JoDo — Wed, 08 Dec 2021 12:54:34 GMT

Hi @danielmartynek and @Guofred ,

Thank you very much for the answer.

I checked the code with the new RTD version and the flash could be read and written several times. It seems that the problem was indeed in the old RTD version.

The strange thing was that I could write several times and could also read the data in memory, but it stopped working once I ran the read function.

However, with the new RTD version everything works fine.
Tank you for the advice!

Regards,

JoDo

Re: S32K3 Read/Write Flash with C40-Driver

danielmartynek — Wed, 08 Dec 2021 13:01:27 GMT

Hi @JoDo,

Thanks for the update,

I'm glad it works now,

BR, Daniel

Re: S32K3 Read/Write Flash with C40-Driver

Skannan — Thu, 21 Jul 2022 09:23:50 GMT

what is c40? Is it standard or what?