Re: update CE application during runtime
- From: "Paul G. Tobey [eMVP]" <p space tobey no spam AT no instrument no spam DOT com>
- Date: Wed, 4 Oct 2006 10:57:21 -0700
The application is in ROM? If so, the answer will depend on the exact
architecture of the system. It's possible, for example, to have a
persistent storage device, a hard disk, flash disk, etc., mounted as the
root of the filesystem. If you do this, then you can simply copy the new
version of a file over the top of the ROM version and the OS will do the
right thing such that the new version, which ends up on the hard disk, of
course, will be used the next time it's executed in place of the ROM
version.
If you aren't using a persistent store in this way, you *may* be able to
offer a component upgrade, if there is some sort of a persistent filesystem
on your device. For example, some of our devices use a section of flash as
filesystem. They set up the registry on the device such that the loader's
"path" includes a folder on this flash filesystem. So, for programs
launched after the flash filesystem is mounted, applications otherwise in
ROM can be overridden. The difficulty here is updating drivers and other
things which are loaded during boot, when the filesystem might not yet be
mounted.
I guess, as usual, we need more information to give a real answer...
Paul T.
"andrews" <andrews@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:D064B5D6-39E7-4656-BE38-3E704FB6C08E@xxxxxxxxxxxxxxxx
We have a need to update applications and data during runtime. Is this
possible or is the only way to update an application is rebuilding the
entire
NK.bin file and loading that?
Thanks,
Andy
.
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