S32KのトピックRe: how to put a variable on S32k eeprom

how to put a variable on S32k eeprom

momo12 — Fri, 10 Aug 2018 09:17:36 GMT

how can I put a variable on s32k eeprom?

__eeprom unint32_t MyVariable. doesnt work.

Re: how to put a variable on S32k eeprom

danielmartynek — Mon, 13 Aug 2018 12:33:25 GMT

Hi,
The EEPROM is accessible in FlexRAM so you can use a pointer on a location in FlexRAM.

Regards,
Daniel

Re: how to put a variable on S32k eeprom

momo12 — Mon, 13 Aug 2018 12:48:16 GMT

What is the compiler directive to put a variable/Array on Flexram then?

Re: how to put a variable on S32k eeprom

jiri_kral — Mon, 13 Aug 2018 13:52:56 GMT

Hi,

you can use PE Micro partition feature and add your data into FlexRAM section (already partitioned by PE Micro as emulated eeprom) by __attribute__ specifier. You can find partition option in debug configurations -> Advanced Options

You can find more details about EEESIZE and DEPART in reference manual.

Modify your linker file and add flexram section - like this:

And add your variable in .eeeprom section - for example in your main.c:

Here is an example related to this topic - Example: S32K144 EEEPROM usage

Hope it helps.

Jiri