search

NordicSemiconductor / Nordic-Thingy52-FW

Nordic Thingy:52 software development kit. This kit is designed to assist users in developing their own custom firmware for Thingy. Please see http://www.nordicsemi.com/thingy for the latest news and software releases.
Other
210 stars 133 forks source link

DFU/bootloader support? #7

Closed pabigot closed 7 years ago

pabigot commented 7 years ago

The documentation suggests we should be able to install our own boot loaders to support modified firmware. That page is somewhat lacking in detail; more importantly there doesn't appear to be any bootloader source for pca20020.

There is something in the thingy project/bootloader_secure directory but it's for a different board and possibly a different SDK version.

jorgenmk commented 7 years ago

The project found in the project/bootloader_secure directory is in fact the source code for the bootloader used in Thingy:52. As you can see in the project, most of the files used come from the nRF5 SDK 12.1.

The only code difference (to my knowledge) from the 12.1 SDK bootloader is the flashing yellow LED.

And of course, the folder should have been renamed from pca10040to pca20020. This will be fixed to avoid confusion.

pabigot commented 7 years ago

@jorgenmk I think the issue is that I use the armgcc toolchain, which does not even begin to build. Patching the Makefile I can correct the SDK_ROOT link and add some of the other missing includes and driver sources, but it overruns the FLASH region even before I can identify everything that's missing. It also seems to have references to SEGGER_RTT_printf in the non-debug version.

I don't need this anymore since I can flash directly, but in case it's helpful I'm attaching the work-in-progress diff.