Vidarte Ana wrote:
>
> Hello,
>
> Can I use fopen, fprintf, fclose functions in a real time
> application (composed of init_module();)?
No you may be preempting a Linux task doing the same thing....
> I have to make a real time application with a periodic task, but I
> need to save the result of this task, so I try to use these functions.
> However, the real time module does not recognize the functions. Does anyone
> have an example of a real time application with a periodic task that saves
> data to a file?
>
> Ana.
This is what you have to do. Look at the examples for help.
Create a fifo in the rt task.
Write data to that fifo as required.
use
cat /dev/rtfX > myfile.
you may need to be root or to open up permissions on the /dev/rtfX
You can even do it in a local directory as non root.
mknod myfifo c 150 3 ( X = 3 here )
and cat ./myfifo > myfile
where X is the chosen fifo number
You can only write to the myfile you cannot ( whith this simple example
) read the file back.
Have fun
Phil
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