I've got a new Samsung LCD TV here, and it has a serial-port on the back that can be used to control some functions.

The port is labeled "service only" or some such drivel, previously known as the "ex link" port. It consists of a 1/8" stereo mini-plug jack.

Here (attached) is a small C-program that I wrote, for sending commands to it over a USB serial adapter (hardcoded pathname for now). Wiring info is included at the top.

Now.. the TV has "120Hz" refresh, and a few heavily buried menu items for controlling the frame interpolation functionality. What I want, is a way to easily enable/disable that functionality, without having to navigate so bloody deeply through the menu system each time.

Thus far, I've figured out mappings between menu items and serial commands for most stuff. But not for the 120Hz controls..

Anyone else here got a 120Hz Samsung and want to play along?