How to write into EEEPROM using j-link

[leila]

Hello,

I am working with S32K118. I have already configue emulate eeprom and it works perfectly; writing and reading while the application is running.

My question is if I could write into EEEPROM directly using J-link or another debuger as well? Then on which address should I write, 0x10000000?

I am using DS for ARM v2018.R1, SDK_RTM_3.0.0.

Thank you for your supprt.

Best regards,

Leila

[lukaszadrapa]

Hi Leila,

yes, you can write the EEPROM directly by debugger. It doesn't matter if the FlexRAM is written by your code (by core) or by a debugger. You can write to the same addresses as you write by your code.

Regards,

Lukas

[leila]

Hi Lukas,

Thank you for the response back. I got more questions.

1- To write into emulate eeprom using a debugger, I should write into FlexRAM? Then it means I just have access to 2KB of FlexNVM via FlexRAM, am I right?

2- Could I write into FlexNVM for the first time using a debugger before partitioning FlexNVM as eeeprom?

Thank you for your support.

Best regards,

Leila

[lukaszadrapa]

Hi Leila,

1. Yes and yes.

2. No. If you want to use Emulated EEPROM, all read/writes are done using FlexRAM. Once partition is done, FlexNVM allocated for EEE is not accessible ever - it won't be visible in the memory map. If you want to load some data to EEE, it must be done after partitioning.

Regards,

Lukas