Experimental Physics and
Industrial Control System

Mark Rivers via Tech-talk <tech-talk at aps.anl.gov> · Mon, 14 Sep 2020 14:51:52 +0000

I am trying to help someone with a Stream protocol file, and I don't understand what is wrong.

This is the protocol.  It should send the value in binary using %.2r and end with a checksum.

settunermode {out "\x43\x01\x54\x4D%.2r\x00\x00%<sum16>";in "ACK";}

This is the record:

record(mbbo, $(P)settunermode) {
                field(DESC, "RF source")
                field(DTYP, "stream")
                field(OUT,"@AJA-powersupply.proto settunermode $(PORT)")
                field(ZRVL, "1")
                field(ONVL, "2")
                field(ZRST, "AUTO")
                field(ONST, "MANUAL")
}

This is the asynTrace output with TRACEIO_ESCAPE and TRACIO_HEX.

2020/09/14 08:36:51.484 \\.\COM16 write 20
C\001TM%.2r\000\000%<sum16>\r\n

43 01 54 4d 25 2e 32 72 00 00 25 3c 73 75 6d 31 36 3e 0d 0a

The problem is that it is sending the literal strings %.2r and %<sum16> rather than substituting them.  Everything else in the output is correct.

What am I doing wrong?

Thanks,

Mark

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System