[mythtv-users] Is anybody able to change channels on a 4250HDC STB via firewire?

Matt Emmott memmott at gmail.com
Thu Jun 4 00:49:56 UTC 2009


On Wed, Jun 3, 2009 at 4:55 PM, Matt Emmott <memmott at gmail.com> wrote:

>
>
> On Tue, Jun 2, 2009 at 8:57 PM, Robert McNamara <robert.mcnamara at gmail.com
> > wrote:
>
>> On Tue, Jun 2, 2009 at 5:55 PM, Matt Emmott <memmott at gmail.com> wrote:
>> > /* SA42xxHD IDs */
>> > #define SA4200HD_VENDOR_ID1     0x000014f8
>> > #define SA4200HD_MODEL_ID1      0x00001072
>> > #define SA4250HD_VENDOR_ID1     0x000022ce  /* jerkychew's stb */
>> > #define SA4250HD_MODEL_ID1      0x000010cc  /* jerkychew's stb */
>> >
>> > And the script gives me the following:
>> >
>> > matt at mythdev
>> :/usr/share/doc/mythtv-backend/contrib/channel_changers/sa4250hdc$
>> > ./sa4250_ch_new -v
>> > node 0: vendor_id = 0x00001106 model_id = 0x00000000
>>
>> /* SA42xxHD IDs */
>> #define SA4200HD_VENDOR_ID1     0x000014f8
>> #define SA4200HD_MODEL_ID1      0x00001072
>> #define SA4250HD_VENDOR_ID1     0x00001106
>> #define SA4250HD_MODEL_ID1      0x00000000
>>
>> Robert
>>
>
> Many thanks for double-checking my settings, I guess I don't know how to
> read! Sorry about that!
>
> I'm at work so I can't tell if it actually did change the channel but I was
> able to recompile and run the command without error!
>
> matt at mythdev:/usr/share/doc/mythtv-backend/contrib/channel_changers/sa4250hdc$
> ./sa4250_ch_new 786
> Changing channel 786
>
> I'll see how it works when I get home and if I need to use the
> sa4250_ch_guid command or not, and will report back! Thanks!
>

Everything _appears_ to be working but the box just isn't changing channels.
I'm able to plug a GUID from dmesg | grep 1394 into sa4250_ch_ guid like so,

matt at mythdev:~$ sa4250_ch_guid 00110666000000b8 56
Changing channel 56

But the channel never changes. If I run the non GUID version verbosely I
get:

matt at mythdev:~$ sa4250_ch_new -v 56
node 0: vendor_id = 0x00001106 model_id = 0x00000000
Device acquired on node 0
Changing channel 56
AV/C Command: cmd0=0x00487ce7 cmd1=0x04003800 cmd2=0xff000000

Again, with the channel never changing. I've tried powering everything down,
moving the cable to another firewire port and powering them back on (STB
first), with no result. Any ideas what to try next?
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