RE: How to implement a custom CRC check function in StreamDevice?

[Freddie Akeroyd - STFC UKRI via Tech-talk <tech-talk@aps.anl.gov>]

Hi Feng,

 

The stream device checksum function names are looked up via

https://github.com/paulscherrerinstitute/StreamDevice/blob/929204cb13f122e2ff3beb64ab86d8bdb6a21d70/src/ChecksumConverter.cc#L640 so you just need to add your calculation function to this (or a separate) file and then reference it from the  checksumMap  variable

 

Regards,

 

Freddie

 

 

 

 

From: Tech-talk <tech-talk-bounces@aps.anl.gov> On Behalf Of LONG FENG via Tech-talk
Sent: 19 December 2025 08:13
To: tech-talk@aps.anl.gov
Subject: How to implement a custom CRC check function in StreamDevice?

 

Hi all,

StreamDevice provides some common CRC check methods, such as %<crc16>. However, sometimes we encounter non-standard CRC checks, like the CRC check of the SQM160, as shown in the figure .

 

 

In this case, we need to write a function to implement a custom CRC check and include this custom CRC function in the .proto file. 

 

How can we implement this process?  

 

Feng