Does anyone have any recommendations for some free and quick source code for a packet interface. I'm looking for something along the lines of start byte, n-byte length, n-bytes of data, checksum, end byte.

I want reliable communication that will drop packets and/or not get hung up on code. Faster would be better but if it isn't optimal or doesn't have a checksum (just a start and end byte check) that would be fine. Thanks in advance!

 

You may want to research some old zmodem or kermit protocols...there should be lots of source code available online. They may not be exactly what you want, but with minor changes they may do.

 

Thanks! I'll take a look at these for sure.