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<== Date ==> <== Thread ==>

Subject: Re: devAsynUInt32Digital: add parameter for shifting?
From: "Konrad, Martin" <[email protected]>
To: Mark Rivers <[email protected]>
Cc: EPICS Tech Talk <[email protected]>
Date: Wed, 9 May 2018 14:27:20 +0000
Hi Mark,
> What record type are you using?
longin. We are using this for reading out hardware revision numbers etc.
(8 bit ints) so we need a mask + some bit shifting.

> devAsynUInt32Digital.c does support shifting for mbbo, mbbi,
> mbboDirect, and mbbiDirect records.
Yes, but these records are a bit different from longin:

For mbbi/mbbo/mbbiDirect/mbboDirect we have:
- MASK field of the record
- SHFT field of the record

For longin we have:
- no MASK field in the record
- no SHFT field in the record

devAsynUInt32Digital provides:
- mask contained in the INP field
- no information about shifting contained in the INP field

Regards,

Martin

-- 
Martin Konrad
High Performance Controls Team Leader
Facility for Rare Isotope Beams
Michigan State University
640 South Shaw Lane
East Lansing, MI 48824-1321, USA
Tel. 517-908-7253
Email: [email protected]

References:
devAsynUInt32Digital: add parameter for shifting? Konrad, Martin

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