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

[Matt Emmott]

On Thu, Jun 4, 2009 at 8:36 PM, Christian Szpilfogel <chrisznews4 at rogers.com
> wrote:

> Matt Emmott wrote:
>
>>
>>
>>        /* SA42xxHD IDs */
>>        #define SA4200HD_VENDOR_ID1     0x000014f8
>>        #define SA4200HD_MODEL_ID1      0x00001072
>>        #define SA4250HD_VENDOR_ID1     0x00001106
>>        #define SA4250HD_MODEL_ID1      0x00000000
>>
>>        Robert
>>
>>
>>
>>
>> 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?
>>
> You are going to have to debug this lower down. I haven't seen these vendor
> IDs on an SA4250 (not necessarily an issue) and the Model ID of 0 is unusual
> to me as well. Your thread however indicates you compiled those values into
> the channel changer.
>
> In an earlier email you found:
> /sa4250_ch -v
> node 0: vendor_id = 0x00001106 model_id = 0x00000000
> node 1: vendor_id = 0x000022ce model_id = 0x000010cc
>
> 22ce IS a Scientific Atlanta box and 10cc is a model as well. Have you
> tried this pair? Your thread suggests you did not.
>
> I also asked you earlier for an output of plugreport and you did not do
> this. Can you do this?
>
> sa4250_ch_new also has a "-n" parameter so if you have the constants
> correct then perhaps you want the following command:
> sa4250_ch_new -n 1 -v 56
>
>
Sorry for not providing plugreport sooner. Here it is:

matt at mythdev:/usr/local/bin$ plugreport
Host Adapter 0
==============

Node 0 GUID 0x00110666000000b8
------------------------------
libiec61883 error: error reading oMPR
libiec61883 error: error reading iMPR

Node 1 GUID 0x0022ce14782e0000
------------------------------
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=0, overhead_id=0, payload=146
iMPR n_plugs=0, data_rate=2

And attempting to change the channel with the -n switch gives me:

matt at mythdev:/usr/local/bin$ ./sa4250_ch_new -n 0 -v 784
node 0: vendor_id = 0x00001106 model_id = 0x00000000
Device acquired on node 0
Changing channel 784
AV/C Command: cmd0=0x00487ce7 cmd1=0x04031000 cmd2=0xff000000

It looks like it works, but the channel never changes.
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