Re: Support for DBR_INT64 missing in caget/camonitor?

["Dmitry Yu. Bolkhovityanov via Tech-talk" <tech-talk@aps.anl.gov>]

Hi!

Lack of INT64/UINT64 is not caget/caput/camonitor problem.  These types 
are missing in the Channel Access protocol and it would be not an easy 
task to add them.
Look into db_access.h file: there are 8 "basic" DBF_nnn types and a number 
of DBR_nnn types, of which first 8 are aliases to DBF_nnn, while the rest 
are 8x DBR_STS_nnn, 8x DBR_TIME_nnn, 8x DBR_GR_nnn, 8x DBR_CTRL_nnn, plus 
a number of exotic ones, like DBR_STSACK_STRING.
It is hardly possible to extend the CA type nomenclature without breaking 
compatibility in some way.

With best regards,
Dmitry



On Thu, 24 Jul 2025, Heinz Junkes (FHI) via Tech-talk wrote:

> Hi,
>
> I have an int64in record and cannot read the decimal value via caget/camonitor.
>
> epics> dbpr PPB:DOOR::WIEGAND:1:data,7
> ACKS: NO_ALARM      ACKT: YES           ADEL: 0             AFTC: 0
> AFVL: 0             ALST: 8591023625    AMSG:               ASG :
> ASP : PTR (nil)     BKLNK: ELL 0 [(nil) .. (nil)]           BKPT: 00
> DESC: Wiegand w1    DISA: 0             DISP: 0             DISS: NO_ALARM
> DISV: 1             DPVT: PTR 0x55a303ba30
> DSET: PTR 0x7fb81f00c0                  DTYP: wiegandInt64in
> EGU :               EVNT:               FLNK: CONSTANT      HHSV: NO_ALARM
> HIGH: 0             HIHI: 0             HOPR: 0             HSV : NO_ALARM
> HYST: 0             INP : CONSTANT 1    LALM: 8591023625    LCNT: 0
> LLSV: NO_ALARM      LOLO: 0             LOPR: 0             LOW : 0
> LSET: PTR 0x55a303b3a0                  LSV : NO_ALARM      MDEL: 0
> MLIS: ELL 0 [(nil) .. (nil)]            MLOK: c0 b8 03 a3 55 00 00 00
> MLST: 8591023625    NAME: PPB:DOOR::WIEGAND:1:data          NAMSG:
> NSEV: NO_ALARM      NSTA: NO_ALARM      OLDSIMM: NO         PACT: 0
> PHAS: 0             PINI: YES           PPN : PTR (nil)     PPNR: PTR (nil)
> PRIO: LOW           PROC: 0             PUTF: 0
> RDES: PTR 0x55a2fdc0a0                  RPRO: 0
> RSET: PTR 0x7fb81c0d40                  SCAN: I/O Intr      SDIS: CONSTANT
> SDLY: -1            SEVR: NO_ALARM      SIML: CONSTANT      SIMM: NO
> SIMPVT: PTR (nil)   SIMS: NO_ALARM      SIOL: CONSTANT
> SPVT: PTR 0x55a3042840                  SSCN: 65535         STAT: NO_ALARM
> SVAL: 0             TIME: 2025-07-24 10:33:53.999485865     TPRO: 0
> TSE : 0             TSEL: CONSTANT      UDF : 0             UDFS: INVALID
> UTAG: 0             VAL : 8591023625
>
> With caget/camonitor I get the value displayed as float:
>
> (base) hactar:~ junkes$ caget PPB:DOOR::WIEGAND:1:data
> PPB:DOOR::WIEGAND:1:data       8.59102e+09
> (base) hactar:~ junkes$ camonitor PPB:DOOR::WIEGAND:1:data
> PPB:DOOR::WIEGAND:1:data       2025-07-24 10:33:53.999486 8.59102e+09
>
>
> The attempt to specify the type is not possible:
>
> (base) hactar:~ junkes$ caget -d DBR_INT64 PPB:DOOR::WIEGAND:1:data
> Requested dbr type out of range or invalid - ignored. ('caget -h' for help.)
> PPB:DOOR::WIEGAND:1:data       8.59102e+09
>
> Gruss Heinz