Combining IRman and LCD display on one serial port

This document describes how to combine a LCD display and IRman remote controller on the same serial port.

Note that it's possible that the display/backpack will cause problems when autoprobing the IRman; either get the keyStroke values now, or make sure the display is detachable via removable connector.

1. Build a RS232 harness to accomodate the connections:

   IRman	Computer	Display	Power
   2	2
   3	3	3
   4	4
   5	5	5	Supply Ground
   7	7
   		9	Supply Vcc

   Make sure you feed your display the appropriate voltage (see your display's documentation for details)

2. Next, ensure that the following two parameters are set for the IRman in its device config:
   • skipinit is checked
   • port=/dev/ttyS0
3. The display parameters must appear as:
   • baud=9600
   • initstr=4952
   • port=/dev/ttyS0

(this assumes that your serial port is ttyS0)

Note that you must run your display at the same speed as the IRman - 9600 baud is the only speed supported.

When starting CAJUN, you'll see the letters 'IR' printed on the screen momentarily; this is the initialization for the IRman. It will disappear when CAJUN fully boots.