Experimental Physics and
Industrial Control System

Cheng Weixing <[email protected]> · Mon, 23 Apr 2001 16:52:12 +0800

hello. I have developed the AVME9321 12 bit I/O card driver and it seems
work now.  But I can't display
the channel with MEDM and such tools. when using period scanning, it's
working well. I wonder if I set
the db file correctly.

the db file is like this:
record(ai, "$(user):aiAvme9321_Chan0")
{
 field(DESC, "Acromag AVME9321 Input")
 field(SCAN, "I/O Intr")
 field(DTYP, "acromagAVME")
 field(INP, "#C0 S0@")
 field(LINR, "LINEAR")
 field(EGUF, "10")
 field(EGUL, "-10")
 field(EGU, "Counts")
 field(HOPR, "4096")
 field(LOPR, "0")
 field(HIHI, "8")
 field(HIGH, "6")
 field(LOW, "4")
 field(LOLO, "2")
 field(HHSV, "MAJOR")
 field(HSV, "MINOR")
 field(LSV, "MINOR")
 field(LLSV, "MAJOR")
}

after loading my applications:
-> dbl
epics:aiAvme9321_Chan0
epics:aiExample
epics:aiExample1
epics:aiExample2
epics:aiExample3
epics:calcExample
epics:calcExample1
epics:calcExample2
epics:calcExample3
epics:xxxExample
value = 0 = 0x0
 ->dbgf "epics:aiAvme9321_Chan0"
DBR_DOUBLE:         0             /* it's always zero now, I havn't sent
any external trigger to I/O card*/
value = 0 = 0x0

Then when I send a trigger message. ( in my isr, there is a logMsg, so
there has a message on the screen)

-> interrupt: interrupt running now...the value is 54d0
/* it's okay, the isr is running well*/

-> dbgf "epics:aiAvme9321_Chan0"            /* no response for there
have no trigger now, not 0 */
(then I send a trigger )
interrupt: interrupt running now...the value is 5c10
DBR_DOUBLE:         -2.80586                   /* the channel value is
correct*/
value = 0 = 0x0

using dbgf I can get the channel value, but CA has some problems, I
can't using MEDM to monitor the
epics:aiAvme9321_Chan0 channel. even the epics:aiExample channel, I
can't monitor either.

I have set the environment varible EPICS_CA_ADDR_LIST correctly , and
when using periodic scanning,
these channels can all be monitored by MEDM.  what's wrong with it?

Any suggestion is great appreciated.

Cheng Weixing from SSRF

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System