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<== Date ==> <== Thread ==>
Subject: Stream Device: Parse response that includes checksum of command string
From: David Vine <[email protected]>
To: [email protected]
Date: Thu, 2 Aug 2018 17:44:55 -0700
Hi all,

i'm writing device support for the MeCom protocol for a TEC driver from Meerstetter Engineering.

In order to parse the response correctly I need to calculate a checksum thats not included in the response. This is because the response includes the checksum of the command and not the response.

For example:

Command format:
# address sequence_number command CRC16 terminator
# 01 15AA ?IF 257D \r

Response is:
# address sequence_number CRC16 terminator
# 01 15AA 257D \r

So to parse the response I need to calculate a CRC that's not included in the response. For example:

OUT "#0115AA?IF%<xmodem>\r"
IN "#0115AA%<xmodem>\r" but the CRC is for the OUT not the IN.

Any ideas would be much appreciated.

Thanks,
David

--
Best regards,
David Vine
(925) 326 7503

http://www.Sigray.com

 

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Replies:
Re: Stream Device: Parse response that includes checksum of command string Eric Norum
Re: Stream Device: Parse response that includes checksum of command string Dirk Zimoch
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