I downloaded some code to drive the P10 with it directly connected. I can make things happen, but it requires a .ppm image file to scroll. I can also echo to a pipe, but it just puts the text up and that is all.
it was good enough for the moment to test out the message plugin that i was working on. to process the message queue.
My SMS plugin receives messages, puts them in the queue, and then my hacked together script for messages to drive the matrix , reads the message queue and puts it on the matrix (one p10 panel right now).
I'd be happy to help ya with the plugin setup if ya give me some background on what you need.