Best way to read from a FIFO

[twam]

I'm receiving a constant stream of data from somewhere (it's RTT data from a debugger, but doesn't matter), which I want to decode.
Basically I have a function which gets called with a bytes every time data is received.

What's the best/expected way how to parse something like this? I thought of something like a FIFO object which I could pass to parse_stream, but before implementing something of my own I thought that there must be already a proven solution, as this seems a quite common problem to me.

Any hints where to look?

[franzhaas]

Well it depends.

If you receive the data via a TCP socket, there is the makefile functionality of Python sockets, which gives you a file object that can be directly worked with by construct (but you need to watch out for this issue.: #1082) I have an example of this working over here.: https://github.com/MarketSquare/robotframework-construct

If it is a file handle, I do not have any experience, but would expect https://docs.python.org/3/library/io.html#io.FileIO to work, but I never tried that out... If it is something else... honestly... no idea...

Do you think you might want to chip in with your topic to this project.: https://github.com/MarketSquare/robotframework-construct? It is currently looking for a real world embedded systems use case...

[franzhaas]

Update, i now tried to use file handles in the "NFC nci" example of https://github.com/MarketSquare/robotframework-construct and, when using 2.10.69, and it works... well very well.