Scandalous (nice nickname!),
there is no direct way in standard G that I am aware off. Direct
interrupt service is out of the scope of standard applications. Writing
ISR system drivers is really a different and complicated thing compared
with 'normal' programs.
There is, however, a way to accomlish a kind of quick service, as long
as you can live with the OS's 'real time' behaviour (e.g. some single
ms typical reaction time, but up to some 100 ms worst case in Windows).
The way to go is to have a small and quick serial comm handler that
receives all incoming data. It must identify the different messages and
their target. It sends the different messages via named queues to the
different processing VIs. If this one is highly prioritized it reacts
very quickly.
The processing VIs can generate an event when their named queue
contains new data. Another possibility is to dequeue new elements with
a timeout of 0 ms. In case new data had been dequeued, process it. Else
wait a few ms.
Now put the VI that shall be your ISR processor on 'above normal'
priority and the standard processor to normal and everything should
work as desired.
Greetings from Germany!<br>-- <br>Uwe
