Re: HTML Device Driver

[Pete Jemian <prjemian@gmail.com>]

Title: HTML Device Driver

That is a good item of general interest.  Probably would need something that cleans up HTML source so that common XML code could be used for reading either HTML or XML sources.  Any of several XML libraries could be used: libxml, lxml, or mxml.

Describing the XML "device" for the INP field, and how that maps to an XML node such as through XPATH, might be an interesting challenge.

Will there be a codeathon with the upcoming EPICS meeting?  This is a candidate.

Pete


On 7/28/10 10:33 AM, David Dudley wrote:

Here’s a new one for you (Got Ralph and Michael going about how to do it, anyway ;-)

Almost all of the PLC equipment we’re going to be using on NSLS/2 is connected on Ethernet.

It is common practice in the communications modules now, to integrate an embedded WEB server into the device.  Both the Siemens and Rockwell hardware we’re going to use have that capability, as well as most of the new generation of instrumentation.

Does anyone have knowledge of an EPICS device driver that is capable of reading and interpreting a WEB page or XML page?  Seems that this would be the most universal way to read data from all this differing equipment, if such a driver was available.

David Dudley

Pete