Experimental Physics and
Industrial Control System

Angus Gratton <[email protected]> · Thu, 22 Jul 2010 17:31:08 +1000

Hi everyone,

I'm new to EPICS and I'm having problems with a new driver & device
support package I'm writing.

It seems that I can't get the link name to parse from my test database
file. The device support is registered successfully, and when it hits my
init_record function the 'type' is set correctly (VME_IO). However the
card and signal numbers aren't parsing (they are always 0 and 0,
respectively.)

Here is the db entry:

        record(bo, "testrelay")
        {
        		  field(DESC, "Test relay")
        		  field(OUT, "#C1 S1")
        		  field(DTYP, "xvme260")
        		  field(ZNAM, "open")
        		  field(ONAM, "closed")
        		  field(SCAN,"Passive")
        }

I've tried various values in the OUT field including "#C1 S1 @" "#C1"
and "VME_IO #C1 S1", plus some others.

The .dbd file:

        # XVME260 support
        driver(xvme260)
        variable(xvme260Debug, int)
        registrar(xvme260Register)
        device(bo, VME_IO, xvme260Bo, "xvme260")

Here's the dbpr from the IOC (excuse email reformatting):

        > dbpr testrelay, 1
        ASG:                BKPT: 00            COSV: NO_ALARM
        DESC: Test relay    
        DISA: 0             DISP: 0             DISS: NO_ALARM
        DISV: 1             
        DOL:CONSTANT        DTYP: xvme260       EVNT: 0
        FLNK:CONSTANT 0     
        HIGH: 0             MASK: 0             NAME: testrelay
        OMSL: supervisory   
        ONAM: closed        OSV: NO_ALARM       OUT:VME_IO #C0 S0 @ 
        PACT: 0             
        PHAS: 0             PINI: NO            PRIO: LOW           
        PUTF: 0             
        RBV: 0              RPRO: 0             RVAL: 0             
        SCAN: Passive       
        SDIS:CONSTANT       SEVR: INVALID       SIML:CONSTANT
        SIMM: NO            
        SIOL:CONSTANT       STAT: UDF           TPRO: 0
        TSE: 0              
        TSEL:CONSTANT       UDF: 1              VAL: 0
        ZNAM: open          
        ZSV: NO_ALARM       

As you can see, it's picked up everything from the .db correctly apart
from OUT.

I've also verified my record_init is being called, and it's definitely
erroring due to the invalid card number in OUT. The 'type' field is set
right in OUT, but then all the fields in the 'vmeio' struct are zero.

I'm sure I'm doing something obviously wrong for a newbie, please can
anyone point me at what I should be investigating?

Thanks in advance.

Cheers,

Angus

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System