topic Re: Unable to watch NVMFlex in Memory Map View in S32 Design Studio

Unable to watch NVMFlex in Memory Map View

juan_jimenez — Thu, 08 Jul 2021 15:24:14 GMT

Hi,

I am trying to setup my project to use FlexRam as emulated EEPROM. My initial goal is to confirm that data written in FlexRam (base address at 0x14000000) is also present in FlexNvm (base address at 0x10000000).

Unfortunately, memory map view only display information for FlexRam region (check screenhot)

When I check NvmFlex region, only question mark are showed up.

Any idea about what happen?

Environment

S32 Design Studio for ARM 2.2
S32K146 development kit
j-link segger probe

Re: Unable to watch NVMFlex in Memory Map View

jiri_kral — Fri, 09 Jul 2021 11:43:40 GMT

Hi Juan,

if the FlexNVM is configured as a backup for Emulated EEPROM, the data stored in the FlexNVM area are unavailable. Only way how to access stored data is through Emulated EEPROM.

The reason is that the 64kB FlexNVM Flash is maintained by algorithm which is responsible for maximal endurance of Flash memory used as a backup for 4kB EEEPROM.

Jiri

Re: Unable to watch NVMFlex in Memory Map View

juan_jimenez — Fri, 09 Jul 2021 12:04:21 GMT

Understood. It makes sense. Thank you.