Re: Stream Device and Asyn

[Alan Greer <ajg@observatorysciences.co.uk>]

Thank you for the suggestion, I will give it a try.

Kind regards, Alan


On 04/08/2013 04:59 PM, Eric Norum wrote:

Perhaps this could be related to the patch: StreamDevice-2-6-patch20121113

Try applying that to the 2-6 code and see if it fixes things.

On Apr 8, 2013, at 8:51 AM, Alan Greer <ajg@observatorysciences.co.uk> wrote:

Hi, I have been carrying out some additional tests.

I checked the flush operation in my driver and it does print "flush".
I then started looking at versions.  I have discovered that it works as expected if I use stream device version 2-5 instead of 2-6.  In this situation I see a flush followed by a write.


Kind regards, Alan




On 04/08/2013 04:35 PM, Mark Rivers wrote:

I can't think of any reason why it would be doing a read.  asyn device support does attempt a read at iocInit on many output records, but not on stringout records.

Could this be from a "flush" operation?  Your driver is printing the message "device read"?

Mark

-- 
Eric Norum
eric@norum.ca