[mythtv-users] Configuring USB->serial converter to control DirecTV set top box

[Mike Lewis]

D11 receiver?

What adapter did you get?

Did you set it up with a null modem cable?

Did you compile com port support in the kernel?

Did you setup your directv.pl to include this?

$baudrate = "115200";
$serport = "/dev/ttyS0";

Does /dev/ttyS0 exist?  You are trying to use the USB node, but it is
actually a serial device.

http://www.mythtv.org/wiki/index.php/Controlling_DirectTV_D11_via_USB