[mythtv-users] DirecTV serial control problems

Richie Crews rcrews at intercall.com
Tue Jun 29 15:49:16 EDT 2004

It should be /dev/ttyS0 or /dev/ttyS1. Unix is case sensitive so make sure
you have it right. You could also try the program called statserial. It will
tell you which port is live and give you a break down on port pins are
active and what not.

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of John OKeefe
Sent: Tuesday, June 29, 2004 3:43 PM
To: Discussion about mythtv
Subject: [mythtv-users] DirecTV serial control problems

I am having problems getting MythTV to control my DirecTV box.

I have a DB9 serial cable that I am using. I have verified that the serial
cable works by using the DTVcontrol program here: http://www.dtvcontrol.com/
With this control and a Windows 2000 computer I was able to successfully
change controls, turn power off and on, etc. I had to have the utility use
the old command set as it did not work with the new command set.

I am using the rca.pl script downloaded from here: http://tarek.2y.net/myth/

I have tried ttys0, ttys1, cua0, and cua1 and none work.

Is there a way to know exactly what port my serial cable is connected to?

What is the difference between ttys ports and the cua ports?

Is there a serial port monitoring tool that will allow me to see commands
being sent back and forth so I can see what is happening?

Any other thoughts on what I might need to do to get this working?

- John 

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