DFU flashing of apps sometimes aborts, and although rare this leads to
broken devices if no boot button or serial/jtag access exists, because
the bootloader will keep trying to start a half-flashed app that then
crashes at some point.
The easiest fix that works with existing bootloaders is to prepend a
small 512 byte stub that calculcates the crc and compares it with the
crc calculated at build time, and then either starts the actual app, or
sets the dfu flag and resets. This ensures we either have a working,
running app, or end up in the bootloader, ready to flash again.
For obvious reasons this only applies to dfu apps, and not to flash
targets like the actual bootloader itself.
Change-Id: Id6df0486c8b779889d21800dc2441b3aa9af8a5f
Call the script from the proper directory, and cd into the topdir on top
of the script. Fixes:
/build/contrib/jenkins.sh: line 71: contrib/prepare_upload.sh: No such file or directory
Related: OS#4413
Change-Id: Icbfaa5579aab887830ca90b24a2e322df8d98f4f
Don't create copies of firmware files with version strings appended in
the normal build. Only do this before uploading the firmware files.
I have verified that "make" before this change and
"make; contrib/prepare_upload.sh" after produce the same files.
Close: OS#4413
Change-Id: I118a4ff397a178281c26a6b98112fa66b6f049ab
Eric Wild
Oliver Smith