Experimental Physics and Industrial Control System

Hello everyone,

I have a device, that sends unsolicited binary data at a rather high
rate to a TCP/IP client. All blocks have the same length and are not
terminated. Since I just want to read them, my Idea was to use the
asynRecord and it's asynRecordDevice support / the asynOctet interface.
The documentation states, that I/O Intr is fully supported, but it
doesn't seem to work. I made a small test setup with netcat and asyn
R4-35 to reproduce this:

in the startup script:
#drvAsynIPPortConfigure("portName","hostInfo",priority,noAutoConnect,noProcessEos)
drvAsynIPPortConfigure("ASYNTEST","localhost:60000",0,0,1)

template:
record(asyn,"$(DEVN):rdRawData") {
    field(DESC, "asyn record test")
    field(DTYP, "asynRecordDevice")
    field(PORT, "$(P)")
    field(ADDR, "$(A)")
    field(IFACE,"asynOctet")
    field(TMOD, "Read")
    field(TMOT, "-1")
    field(IFMT, "Binary")
    field(IMAX, "4")
    field(NRRD, "4")
    field(SCAN, "I/O Intr")
}

If I send data it keeps getting buffered by the socket and is only read,
if I force processing e.g. by caput to the PROC field. Is this a bug or
is it simply not supported?

Tanks and best regards,
Christoph

--
(bb|[^b]{2})


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