Experimental Physics and
Industrial Control System

If no one has done this, there might be some hints from asynNDArrayDriver in areaDetector. That implements the writeOctet function, so that when a file path is written (via the NDAttributesFile parameter) the function triggers a read of that file, which you could then extract information from and populate other parameters. The line number could be another parameter set at runtime.

Or, another way of doing it would be to read the file periodically in a polling thread, perhaps enabled and disabled by another parameter.

Cheers,
Matt

On Jun 17, 2014, at 8:26 AM, Ralph Lange <[email protected]> wrote:

> All,
> 
> I was wondering if anyone has written an ASYN port driver for file read access.
> Something that on every read returns a (run-time) configurable line of a (start-up) configurable file, for example.
> 
> Intended use: Read stuff from the /proc file system using StreamDevice.
> 
> Thanks for any hints,
> ~Ralph
> 

Replies:

RE: ASYN port driver for file IO? Mark Rivers

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ASYN port driver for file IO? Ralph Lange

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