Pre-load data in FDS, cloning devices

RE: Pre-load data in FDS, cloning devices

Petter Myhre — Mon, 18 Sep 2017 12:07:52 GMT

By modifying the bootloader it should be possible, but it is difficult to say how much work it would take.

Without modifying the bootloader, it might be possible. The bootloader expects to get one application hex file, but you can try to merge the application hex with the FDS hex, in to one "application hex". Typically Fstorage (used by FDS) uses the last pages of flash (or the last pages of flash before the bootloader if it exists), but this isn't a good idea if you want to do dual bank update. Instead you should configure Fstorage to use the pages that are just after the application, or at least below the limit for doing dual bank update. Or you could just do single bank update.

RE: Pre-load data in FDS, cloning devices

ColdBrew667 — Thu, 14 Sep 2017 17:03:16 GMT

Well, I was wondering if this kind of trick can be also played during a DFU sequence. Say I have one device in the field, it has been initiated with the Hex file of the FDS portion. Now my application changed and I have new files to add to the existing file system. Let us say I agree to loose user data during DFU, will it be possible for me to flash the FDS section again on the field? Or am I again stuck with init values being part of the app and then create files in FDS using code?

RE: Pre-load data in FDS, cloning devices

Petter Myhre — Thu, 14 Sep 2017 13:05:20 GMT

I haven't tested, but I don't see why it wouldn't work.