Experimental Physics and
Industrial Control System

Emmanuel Mayssat <[email protected]> · Mon, 10 Sep 2007 12:13:23 -0700

Hello

It is said that asyn can be used for synchronous devices.
I am contemplating using asyn for my video acquisition driver.
Is that a good idea? As anybody done this?

The design could be as follow:
If I use a PCI frame grabber I instantiate the PCI interface.
If I use a streaming server (AXIS), I instantiate the axis network
interface.
If I want a set of test images, I instantiate a dummy interface, etc.

The upper asyn layer does all the image processing (such as profile
calculation, etc). The interface is actually the "hardware driver" and
its purpose is only the acquisition of a snapshot (in a specific format)
and the generation of software interrupts.

Is this a good design for asyn sync drivers?
Should the profile calculation be part of the interface and the
interrupt be generated when all the processing has been completed?

How can I justify using the asyn driver for sync devices over other
methods? what are the benefits of using asyn here?

--
Emmanuel

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System