Stream CRC32: Difference between revisions

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== Example Flowgraph ==
== Example Flowgraph ==


Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI. Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately.  The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.
[[File:Stream_crc32_flowgraph.PNG]]
 
[[File:Stream_crc32_output.PNG|600px]]


== Source Files ==
== Source Files ==

Revision as of 06:38, 27 January 2022

Byte-stream CRC block.

Input
stream of bytes, which form a packet. The first byte of the packet has a tag with key "length" and the value being the number of bytes in the packet.
Output
The same bytes as incoming, but trailing a CRC32 of the packet. The tag is re-set to the new length.

Parameters

Mode
Set to true if you want to check CRC, false to create CRC.
Length tag name
Length tag key for the tagged stream.
Packed
If the data is packed or unpacked bits.

Example Flowgraph

Stream crc32 flowgraph.PNG

Stream crc32 output.PNG

Source Files

C++ files
crc32_bb_impl.cc
Header files
crc32_bb_impl.h
Public header files
crc32_bb.h
Block definition
digital_crc32_bb.block.yml