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TQ3032F Overview

The Panasonic TQ3032F accepts analog video in RS170/NTSC format, via composite, RGB etc cabling. It is controlled by a standard RS-232 connection (if there is such a thing) and accepts a simple ascii command language documented in Japanese English on water soluble rice paper in microscopic fonts. I _think_ I'm kidding...

Fortunately, what we need from the device isn't too complex, and trial and error suffices in place of a real manual.

This module implements simple low-level calls to initialize the port (we need to turn line buffering off because the protocol has no newlines), send a command string (the panasonic wants in an STX...ETX wrapper -- ^B...^C and it's simplest to do this in C), flush the input queue from the panasonic (a good idea whenever the Panasonic might have been sending junk, as after powerup), and to wait for a given char (Panasonic sends a ACK -- ^F -- when command is recieved, and echoes the command when it has actually completed execution, meaning we can detect that by waiting for the terminal ETX on the echo.


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