Problem reading SNMP Gauge32 values with devSnmp AI/LI records

[Varuna Crishan Meddage via Tech-talk <tech-talk at aps.anl.gov>]

Hi all,

I am trying to read SNMP Gauge32 variables from a Novus GPS device using the devSnmp EPICS driver. 

Here’s my setup:

-  community: novus

- SNMP variable: NOVUS-SECURE-MIB::nsFaultSatView1.0 (Gauge32)

- Record type: stringin / ai / longin (tried multiple)

- Template snippet:

record(stringin, "$(acc):$(sys)_$(group):nsFaultSatView1")

{

  field(DTYP, "Snmp")

  field(INP, "@$(HOST) $(COMMUNITY) $(W)::nsFaultSatView1.$(id) 1 100 s")

  field(SCAN, "10 second")

}

When I start the IOC, I get:

2026/03/13 15:31:50 devSnmp SI read error '<PREFIX>:nsFaultSatView1' : mask '0' not found in 'Gauge32: 14'

I have tried:

- Using `mask = 0`, `1`, `-1`, `0xffffffff`, `*`

- Switching to `ai` or `longin` record types

- Using `:raw` in the OID

- Reading via `stringin` + calc record

All attempts fail with the "mask not found" error.

Question

Is there a way to read **Gauge32 numeric SNMP variables** using  devSnmp?  

Any guidance would be appreciated!

Thanks,

Varuna