[mythtv-users] Getting lirc working

Jon jon at sd-6.org
Sat Mar 17 04:21:08 UTC 2007



Angus wrote:
> Jon wrote:
>> Angus wrote:
>>   
>>> Jon wrote:
>>>     
>>>> Angus wrote:
>>>>   
>>>>       
>>>>> Jon wrote:
>>>>>     
>>>>>         
>>>>>> It sounds like your remote does not repeat keypresses.  Does it have a
>>>>>> LED?  If so, does it continue flashing as you hold the button down?  If
>>>>>> not you can use a digital camera pointed at the ir transmitter to confirm.
>>>>>>   
>>>>>>       
>>>>>>           
>>>>>     Digital camera, eh?
>>>>>     
>>>>>         
>>>> Digital cameras are sensitive to IR light.
>>>>   
>>>>       
>>>>>     Well, as an addendum, after pushing several keys for a while out of 
>>>>> frustration, it finally registered a "gap". So I went through the 
>>>>> process of testing every key, and you can imagine my frustration when I 
>>>>> finished and found every key was coded as 0x0. Here's the less 
>>>>> vacuous-looking part of the config file:
>>>>> bits            0
>>>>>  eps            30
>>>>>  aeps          100
>>>>>
>>>>>  one             0     0
>>>>>  zero            0     0
>>>>>  pre_data_bits   32
>>>>>  pre_data       0x800100A7
>>>>>  gap          339993
>>>>>  toggle_bit      0
>>>>>
>>>>> Now what do I try?
>>>>>     
>>>>>         
>>>> Have you read http://www.linuxtv.org/v4lwiki/index.php/Remote_controllers
>>>>   
>>>>       
>>>     Yes, I have.
>>>
>>>     
>>>> Specifically,
>>>> saa7134: Most cards need only the saa7134 driver, but a few need the
>>>> ir-kbd-i2c helper. Boards known to require ir-kbd-i2c include the Upmost
>>>> Purple TV and the latest "i-series" Pinnacle PCTV boards (110i, 50i)
>>>>   
>>>>       
>>>     And I've been asking what that means over at v4l, but I haven't 
>>> gotten any response.
>>>     
>> It means you may need to modprobe ir-kdc-i2c before it will work.  You
>>   
> 
>     Ah, yes. But that module loads automatically with saa7134. 
> http://www.mythtv.org/wiki/index.php/KWorld_Global_TV_Terminator#Remote 
> also says that I might need a patch for that, which is apparently got 
> something to do with v4l, but I can't been able to get anyone there to 
> help me with that yet.
> 
>> might see if you can use the linux input interface instead of lirc.
>> Open xev and press a few buttons on the remote to see if they register.
>>   
> 
>     I did, and the results were not remarkable. Anything I pressed 
> returned this:
> KeyPress event, serial 28, synthetic NO, window 0x1e00001,
>     root 0x45, subw 0x0, time 959597, (-218,-78), root:(400,300),
>     state 0x0, keycode 177 (keysym 0x0, NoSymbol), same_screen YES,
>     XLookupString gives 0 bytes:
>     XmbLookupString gives 0 bytes:
>     XFilterEvent returns: False
> 
> KeyRelease event, serial 31, synthetic NO, window 0x1e00001,
>     root 0x45, subw 0x0, time 959645, (-218,-78), root:(400,300),
>     state 0x0, keycode 177 (keysym 0x0, NoSymbol), same_screen YES,
>     XLookupString gives 0 bytes:
>     XFilterEvent returns: False
> 
> Except for the "time" field, this is exactly what was returned with 
> every key I pressed. I get the feeling that means it isn't working here 
> either.
> 

I suspect your remote is not supported by the driver yet.  If you are
feeling adventurous, see the section titled "How to add remote control
support to a card" at the url above.  I once added support for a cx88
based card before, it's not very difficult.
>>   
>>>> Otherwise, you might try the linuxtv mailing list.
>>>>   
>>>>       
>>>     I might as well try there now.
>>>
>>>     
>>>>>> Angus wrote:
>>>>>>   
>>>>>>       
>>>>>>           
>>>>>>> I'm trying to use the remote through lirc, but help and documentation is 
>>>>>>> scarce. I have a KWorld Global Terminator TV card (saa7134-based) with a 
>>>>>>> built-in IR. The cat /proc/bus/input/devices for which gives:
>>>>>>> I: Bus=0001 Vendor=1131 Product=0000 Version=0001
>>>>>>> N: Name="saa7134 IR (V-Stream Studio TV "
>>>>>>> P: Phys=pci-0000:01:07.0/ir0
>>>>>>> S: Sysfs=/class/input/input2
>>>>>>> H: Handlers=kbd event2
>>>>>>> B: EV=100003
>>>>>>> B: KEY=2c0814 100004 0 0 0 4 2008000 2090 2001 1e0000 4400 0 ffc
>>>>>>> FWIW. I've been trying irrecord -H dev/input -d /dev/input/event2 
>>>>>>> lirc.conf but when I follow the instructions to hold down a key, I see a 
>>>>>>> period, then eventually: irrecord: gap not found, can't continue. I've 
>>>>>>> also tried pushing several buttons. As long as I keep doing that I get 
>>>>>>> more periods, but if I stop, it quits and complains about an absent gap. 
>>>>>>> What do I do?
>>>>>>>
>>>>>>> _______________________________________________
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>>>>>>>     
>>>>>>>         
>>>>>>>             
>>>>>> _______________________________________________
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>>>>>>   
>>>>>>       
>>>>>>           
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>>>>>     
>>>>>         
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