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<== Date ==> | <== Thread ==> |
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Subject: | Re: streamdevice case sensitive sum8 checksum? |
From: | "Brown, Garth via Tech-talk" <tech-talk at aps.anl.gov> |
To: | "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>, "Brown, Garth" <gwbrown at slac.stanford.edu> |
Date: | Fri, 20 Nov 2020 03:21:34 +0000 |
Regex replacement fixed it. I hadn't previously used that for outputs. Here's the change:
%01<sum8> becomes %01<sum8>%#/.*/\L0/
Garth
From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Brown, Garth via Tech-talk <tech-talk at aps.anl.gov>
Sent: Tuesday, November 17, 2020 4:31 PM To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov> Subject: streamdevice case sensitive sum8 checksum?
Is there a way to make checksums lower case?
I'm working on streamdevice support for the TE Technology TC-48-20 temperature controller. It uses the checksum that is coded as %01<sum8> in streamdevice format converter. If the checksum contains letters, they are upper case A-F. It works fine when the checksum
value only contains 0-9, but the controller rejects any checksum with A-F. I tried hard coding a checksum from a command it had rejected, but making the checksum value lower case, *5e00005A -> *5e00005a, and the controller accepted it. That's fine for requesting
values, but I can't hard code the checksum for setting values. Any ideas?
Thanks,
Garth
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