Re: [Linux-gpib-general] ...and inching closer...

[frank m. h. <fm...@st...>]

You should be able to manually conduct serial polls using the ibrsp()
function.  All the 'autopolling' support is broken at the moment though.

Frank

On Tue, 16 Apr 2002, Sridhar Anandakrishnan wrote:

> Hi all on the linux-gpib list - I wonder if you can answer this
> question...
>
> When I want to download a waveform from the oscilloscope, is there a way
> for the user-level program to be informed when the acquisition is done?
> The scope will take 500ms to finish, and is there an interrupt that is
> generated by the linux-gpib code when the oscilloscope sets the Operation
> Complete bit in the status register?  Or is there a way to poll
> periodically from the user level?
>
> I want to ask the scope to average 500 triggers (1ms apart), and then I
> want to download those data.  If I simply send the "acquire" command and
> then immediately request the data "curve?", the 500 averages won't be over
> - what will happen?  Does the software hold the request until the scope is
> done?  Or is the command sent out right away (in which case I think the
> scope responds with the 'incomplete' data - not enough averages...)
>
> I apologize if this question isn't very clear...
>
> Thanks,
> Sridhar.
>
> Sridhar Anandakrishnan  		email:	sa...@es...
> 442 Deike Bldg				Phone: 	(814) 863-6742
> Pennsylvania State University		Dept:	      863-6052
> University Park, PA 16802-2711		Fax:          863-8724
>
>