[mythtv-users] Serial control of RCA DirecTV box -- should I bother?

[H P Ladds]

Hey All,

I'm giving this project another try.  I'm experimenting with the "LOW
SPEED DATA" port on my DirecTV Box (model # DRD523RB). I've connected
to the DirecTV box via a nine pin serial connector.

I have no idea how to looks for signs of life on the port.

Perhaps the info below will be helpful.

Thanks,

root at mythboxen# cat /dev/proc/ttyS?
/dev/ttyS0
/dev/ttyS1
/dev/ttyS2
/dev/ttyS3
/dev/ttyS4

root at mythboxen# cat /dev/proc/ttyS??
No such file or directory

root at mythboxen# cat /proc/devices
Character devices:
  1 mem
  2 pty
  3 ttyp
  4 /dev/vc/0
  4 tty
  4 ttyS
  5 /dev/tty
  5 /dev/console
  5 /dev/ptmx
  7 vcs
 10 misc
 13 input
 14 sound
 21 sg
 29 fb
 61 BaseRemoteCtl
 81 video4linux
116 alsa
128 ptm
136 pts
171 ieee1394
180 usb
189 usb_device
195 nvidia
212 DVB
251 pcmcia
252 aac
253 megaraid_sas_ioctl
254 megadev_legacy

Block devices:
  1 ramdisk
  2 fd
  3 ide0
  7 loop
  8 sd
  9 md
 11 sr
 22 ide1
 65 sd... #edited for brevity
135 sd
253 device-mapper
254 mdp