[mythtv-users] Can't get firewire channel changer to work

Daniel Arfsten darfsten at hotmail.com
Wed Sep 5 23:44:47 UTC 2007

I am using a SA3250HD STB. I tried recording over firewire  to no avail. I 
figure HBO and whatnot will be blocked anyway. So now I would like to use 
the firewire to at least change the channels (more reliable than 
ir-blaster?) I am using s-video capturing on my PVR-350. I can see what's on 
the  cable box thru mythtv frontend so I am guessing that I have the s-video 
IN working right at least.
When I try to change the channels, nothing happens on the cable box? This is 
the output:

sa3250ch 24 -v
node 0: vendor_id = 0x00001947 model_id = 0x00000be0
AV/C Command: 024 = cmd0=0x00487ce7 cmd2=0x04343230 cmd3=0xff000000
AV/C Command: 024 = cmd0=0x00487c67 cmd2=0x04303234 cmd3=0xff000000

So it appears like it's working but I have to be honest, I had to add my 
vendor_id to the script that came along in the contrib directory. Will that 
simple change not work? I am running Feisty Fawn and am using mythtv 20.2 
from the ubuntu proposed repo. Do I need to compile something else to  get 
this to work?

sudo plugreport shows:
Host Adapter 0

Node 0 GUID 0x00194739706a0000
oMPR n_plugs=1, data_rate=2, bcast_channel=63
oPCR[0] online=1, bcast_connection=0, n_p2p_connections=0
        channel=0, data_rate=1, overhead_id=0, payload=146
iMPR n_plugs=0, data_rate=2

Node 1 GUID 0x00506256000010be
libiec61883 error: error reading oMPR
libiec61883 error: error reading iMPR

dmesg | grep iee shows:
[    3.125281] ieee1394: Initialized config rom entry `ip1394'
[    4.489805] ieee1394: Node added: ID:BUS[0-00:1023]  
[    4.489882] ieee1394: Host added: ID:BUS[0-01:1023]  
[   16.640484] ieee1394: raw1394: /dev/raw1394 device initialized


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