[En-Nut-Discussion] Nut/OS upgrade

[Jose Vallet]

On 29/12/10 11:04, Wiktor wrote:
>
>
> Hi André,
>
> I still do not understand although I read the help of OpenOCD. My goal is
> not only to apply an example but to
> change the operating system nut/os on the board. How do I do that?

It seems that you are expecting an OS (Operating System) like those for 
"ordinary computers" (desktops, laptops...) in which the applications 
are separated of the operating system. In such case you have to install 
(and upgrade) OS and applications independently.

With OSs targetting tiny embedded systems (like NutOS) that is not the 
case normally. Your application is compiled and then linked with the 
operating system into a single file that contains both. That is the file 
that you load in the microcontroller. Consequently, if you want to 
upgrade the OS that your application is using, you will have to compile 
and link your application making sure that it is linked using the 
upgraded OS.

This is very simple in NutOS.
1-Compile the new version of NutOS that you want to use (using nutconf, 
for example)
2-Create the sample directory (also using nutconf)
3-re-make your application as you do normally (note: your application 
must be under the directory where you configured the upgraded NutOS to 
create the sample applications!).

That is all.

Good luck
J