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List: mythtv-users
Subject: Re: [mythtv-users] HDMI audio
From: "Scott D. Davilla" <davilla () 4pi ! com>
Date: 2008-05-23 15:58:23
Message-ID: p0623093bc45c99060c57 () [192 ! 168 ! 2 ! 67]
[Download RAW message or body]
>btsglw wrote:
>
>>2008/5/23 Emery Guevremont
>><mailto:emery.guevremont@gmail.com><emery.guevremont@gmail.com>:
>>
>>
>>
>>>Another option could be to buy a usb-rs232 adapter. It's easy to install
>>>and it's cheap. A recent kernel should support it and once plugged in a
>>>usb port, udev will create the device /dev/ttyUSB0.
>>>
>>>
>>
>>You'd have to be careful with this, see below:
>>
>>-- LIRC FAQ <http://www.lirc.org/faq.html>http://www.lirc.org/faq.html --
>>5. Can I use a home-brew LIRC receiver with a Serial to USB adapter?
>>
>>No, this won't work. But there is a project working on a dedicated USB
>>transceiver. Using an Irman with USB adapter should work though.---
>>
>>
>Looks like you're right. But I'm a little surprise since this is
>something the kernel handles. I don't see how only certain things
>can work with a USB/RS232 adapeter and others like lirc can't. I've
>never used lirc, but if you're able to change the serial port from
>ttyS0 to ttyUSB0, I don't understand how it wouldn't work.
>
Most USB to serial devices have poor or non-existent handling of the
serial hardware handshake lines the are used for LIRC control. They
are designed for pushing Tx/Rx serial bits and not bit-banging the
handshake lines.
LIRC using the serial handshake lines requires precise timing control
and the ability to bit-banging them.
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