Experimental Physics and
Industrial Control System

[email protected] (Kevin Tsubota) · Thu, 13 Jul 95 08:09:19 HST

Rozelle and anyone else who can help,

I have the following comments about putting arrays in EPICS records from our
training session:

>!***************************************
>! This is a sample array declaration:
>! Arrays:  DBF_NOACCESS indicates array
>!          3 = special interest level
>!          4 = number of bytes
>!              in this case its just a pointer so 4bytes
>!              if you had the actual array it'll be 4*no_elements in array
>!              ie. array size 10 = 40bytes
>!          uint16_T * xxx; = what gets put in the C code
>!"X Buf Ptr"       XBP SPC_DBADDR  DBF_NOACCESS   NO    3    4    uint16_t * xbp;
>!"Y Buf Ptr"       YBP SPC_DBADDR  DBF_NOACCESS   NO    3    4    uint16_t * ybp;
>!"I Buf Ptr"       IBP SPC_DBADDR  DBF_NOACCESS   NO    3    4    uint16_t * ibp;
>!***************************************

I've added the following in a SERVO record that I'm creating and it
builds with no errors.  However I want to be able to do "dbpf" and also be
able to display entries in the arrays via DM.

>"Velocity filter coeff arr"	AVF   SPC_DBADDR ASL1 DBF_NOACCESS  NO     3      80		double avf[NUMB_VF_COEFF];
>"Feedforward pos coeff arr"	AFFP  SPC_DBADDR ASL1 DBF_NOACCESS  NO     3      80		double affp[NUMB_FF_P_COEFF];
>"Feed forward rate coeff arr"	AFFR  SPC_DBADDR ASL1 DBF_NOACCESS  NO     3      80		double affr[NUMB_FF_R_COEFF];

But I can't.  From DM when I access the fields I get the following errors from the VxWorks shell:

llegal Database Request Type PV: dcs:axe:az:servo.AFFP error detected in routine: db_name_to_addr error
Illegal Database Request Type PV: dcs:axe:az:servo.AFFR error detected in routine: db_name_to_addr error

Can I have array fields and is it also possible to access each individual entry in the array?

Thanks,

Kevin Tsubota

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System