How to not change 16kB section of memory in MSP430FR6989 while firmware updating with CodeComposer

Vyacheslav Prokopiy

Other Parts Discussed in Thread: MSP430FR6989, CODECOMPOSER

Hello.

We use MSP430FR6989. And we need to save some measurements data in internal memory, something like log-file. We need 16 kB of memory for this purpose.

Is it possible to somehow split this segment of memory and do not erase it, when we load new version of firmware into MCU from CodeComposer?

As an instance of possible actions:

We build some program, which performs some measurements and saves the log in FRAM. Device works a certain time and continuously saves data to memory. Then we need to load a new version of firmware into MCU. How to save a present log without downloading this log before firmware updating?

over 8 years ago

0 Luis RC over 8 years ago

TI__Genius 16740 points

Hi Vyacheslav,

You could try changing the Erase options in CCS (Properties->Debug->MSP430 properties->Erase Options) to "Replace written memory locations, retain unwritten memory locations).

Using this approach, it would be good to allocate a section of FRAM for your log which is not used by code or constants, and that is not initialized by the device every time, as explained in this wiki:
processors.wiki.ti.com/.../Creating_MSP430_FRAM_Variables_Using_CCS

Another option could be to use a separate programmer such as FET-Pro430 Lite which allows you to specify areas of memory which you want to retain or Erase.

Regards,
Luis R

0 Vyacheslav Prokopiy over 8 years ago in reply to Luis RC

Expert 1305 points

Hello, Luis!
Thank you for reply. It helps!

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

How to not change 16kB section of memory in MSP430FR6989 while firmware updating with CodeComposer