Packet Sink
Process received bits looking for packet sync, header, and process bits into packet.
input: stream of symbols to be sliced.
output: none. Pushes assembled packet into target queue
The packet sink takes in a stream of binary symbols that are sliced around 0. The bits are then checked for the to determine find and decode the packet. It then expects a fixed length header of 2 16-bit shorts containing the payload length, followed by the payload. If the 2 16-bit shorts are not identical, this packet is ignored. Better algs are welcome.
This block is not very useful anymore as it only works with 2-level modulations such as BPSK or GMSK. The block can generally be replaced with a correlate access code and frame sink blocks.
Parameters
- Sync Vector
- The synchronization vector as a vector of 1's and 0's.
- Target Message Queue
- The message queue that packets are sent to.
- Threshold
- Number of bits that can be incorrect in the sync_vector. -1 by default, meaning allow any number.
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.
Source Files
- C++ files
- TODO
- Header files
- TODO
- Public header files
- TODO
- Block definition
- TODO