How large is the size peer manager uses?

[Haruki Kawakami]

I'm trying to determine DFU_APP_DATA_RESERVED and FDS_VIRTUAL_PAGES. According to this Q&A, DFU_APP_DATA_RESERVED must be the same FDS_VIRTUAL_PAGES, if FDS_VIRTUAL_PAGE_SIZE is 1024.

My application uses 11 pages, so 11+the size peer manager uses must be FDS_VIRTUAL_PAGES( and DFU_APP_DATA_RESERVED). Is this right?

However, I cannot find how large size peer manager uses is.

Would you tell me the size?

[Petter Myhre]

Where did you get "if FDS_VIRTUAL_PAGE_SIZE is 1024" from?

Do you want to reserve your complete application? Don't you just wanted to reserve the part of flash that FDS uses?

You should find the value of FDS_VIRTUAL_PAGES in your application, you can search for it, but usually it is found in sd_config.h, and unmodified the value is 3. Then DFU_APP_DATA_RESERVED should be set to 3.

[Petter Myhre]

Yes, correct.

I see. You are storing your application data in flash, but you are not using FDS to do it. If you are using the 11 pages below FDS. And you haven't modified FDS_VIRTUAL_PAGES (3) or FDS_VIRTUAL_PAGE_SIZE (1024) you should set DFU_APP_DATA_RESERVED to 14.

Please be aware that this only works if you application data is stored in the 11 pages below the flash area FDS is typically using.