[mythtv-users] HP MCE blasters with 2 ports: 2 blasters or 1?

Brian J. Murrell brian at interlinx.bc.ca
Fri Mar 15 15:41:00 UTC 2013


On 13-03-15 11:31 AM, Jan Ceuleers wrote:
> On 03/15/2013 02:38 PM, Brian J. Murrell wrote:
>> Yeah.  I guess I will keep that Acer one in duty to control 2 STBs
>> (DTAs in fact) instead of having to use 2 of these HP units.
> 
> Careful: when you have two of the same devices you have to be able to
> tell them apart. Otherwise the device names might change from one boot
> to the next, and you won't know which-one to use to control a given STB.

Of course.

> You'll probably need to create udev rules to make the device names
> persistent, triggering them based on some property by which you can tell
> your USB IR emitter devices apart, such as a serial number.

Right.  I do this for capture devices already.

> I may have been lucky, but I have indeed been able to interchange
> blasters between emitter devices.

I do have some emitters on order that are supposed to be specifically
for the HP devices, but I was hoping to do some pre-arrival testing.

> Try fiddling with irsend SET_TRANSMITTERS.

Yeah.  I did try that.  No joy.

b.



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