Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Wed, 16 Mar 2011 09:17:04 -0600

Hi Elliott,

On Wednesday 16 March 2011 09:19:29 Rod Nussbaumer wrote:
>
> We use CANbus extensively to control beam optics power supplies. These
> are controlled mostly from VME CPUs using the Tews vxWorks and more
> recently Tews Linux driver, with EPICS device support from Andrew
> Johnson's package.

The Tews driver and CAN device support are included with my drvIpac module, 
but are designed for raw CANbus packets using Basic CAN only; the device 
support doesn't speak any higher level protocols such as CANopen, and the 
driver can only talk to the Tews Tip810 IP module.  I haven't followed 
developments in CAN since I wrote it well over 10 years ago, and after reading 
your description I would not recommend trying to use this for your new 
development.

> > Also, is the ASYN framework the best choice if we have to develop a new
> > driver?

Something based on Asyn would probably be the best starting point for future 
work, as it supports connecting to TCP, UDP and serial devices out of the box.

- Andrew
-- 
An error is only a mistake if you don't learn from it.
When you learn something from it, it becomes a lesson.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System