[mythtv-commits] Ticket #1671: SA4200HD channel changer

MythTV mythtv at cvs.mythtv.org
Wed Apr 12 05:36:07 UTC 2006

#1671: SA4200HD channel changer
 Reporter:  eris3 at ekls.com  |       Owner:  ijr
     Type:  enhancement     |      Status:  new
 Priority:  minor           |   Milestone:     
Component:  mythtv          |     Version:     
 Severity:  low             |  
 Channel Change control for SA4200 via firewire.

 The SA3250 channel change utility does not work for the SA4200 box.  It
 seems to have a different command structure.  After putzing around with a
 bunch of bit settings, I think I found one that works.  (Basically
 SA4200's vendor id is 0x14f8  and model_id is 0x1072  and you send the
 same command, except cmd[1] is simply  CTL_CMD1 | (chn << 8);

 sa4200ch.c is attached.

 I don't think the key_release command in sa3250 was being sent right,
 I've found that simply sending it in one transaction works better.

 I don't know howto make this an internal thing instead of an external
 tool, if someone could point me in the right direction I'll create a patch
 for that as well.

Ticket URL: <http://svn.mythtv.org/trac/ticket/1671>
MythTV <http://www.mythtv.org/>

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