Hello,
I'm working on a control system that has a main VI with two parallel
while loops. My problem is that one of these seem to eat up all the
CPU time. Even though I've given it a 500 ms wait, the other loop is
simply left out of the loop. (Pun intended).
The two while loops are attached (in
It should work. Post some code so we can look for an error.
Les
Just a guess here, but it could be that your code is taking more than
500ms to execute. The 'Wait' would then have no effect.
The 'Wait' functions start waiting as soon as they have thier value,
not after all the code in the loop has finished executing. So unless
there is data dependency between
This is true only if you use the Wait until next ms Multiple, the
Wait function on the other hand will always give the CPU it's rest...
OK, so which way is it. I've read various things over the past couple
hours and it seems nobody really knows or can agree what happens here.
The KB artical a
href=http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/12b2ea9ad5b265ad86256257004dd8e2?OpenDocument;here/a
seems to agree
It's kind of in the middle;-)
As Rolf says if there is other code that takes all the CPU then sure,
the wait included in another code does not help...But for the code
that the wait is involved in it will allways ensure a halt, contrary
to the wait until next ms which would immediately let
Thanks for your answers everyone, I'll try out what you suggest, and
if that don't help me, I'll see if i can post some code(it's a small
part of a big system).
Kyrre
Mads wrote:
This is true only if you use the Wait until next ms Multiple, the
Wait function on the other hand will always give the CPU it's rest...
Not really. As long as there is not data dependancy between the rest of
the code and the Wait function the Wait will wait in parallel with the
