Re: linux-usb-devel Digest, Vol 20, Issue 34

["Ari Kohtamäki" <ari.kohtamaki@xxxxxxxxx>]

Thank you for this solid information. Just what I was afraid of.  :(

I need to look in to those suggestions of yours.
Once again, thank you a lot. Now I can stop wasting my
time with that module and lirc.

> Date: Mon, 21 Jan 2008 23:44:13 +0300
> From: Sergey Vlasov
>> On Mon, Jan 21, 2008 at 04:47:53PM +0200, Ari Kohtam?ki wrote:
> > I have a CableStar 2 PCI DVB-C card with remote module.
> > When I attach the remote module (IR-receiver) to my
> > serial port it works OK with VDR using lirc.
> >
> > I bought an usb2serial converter (FT232BM based) and
> > can't get my remote working with lirc at all.  :(
>
> Simple IR receivers for LIRC attached to a serial port won't work with
> an USB-serial adapter.  These receivers just pass IR pulses to a
> serial control pin (e.g., DCD) and rely on the lirc_serial driver to
> receive all signal transitions with precise timing (in microseconds);
> this won't work over USB.  So you need to find an USB IR receiver
> which is supported by LIRC.
>
> Another option is to get a PCI (or PCI-Express) serial port card - it
> might work with lirc_serial, if it is compatible with 16550 and uses
> IO port mapping (some of these devices are using memory-mapped
> registers - they won't work without code changes in lirc_serial).
> However, such configuration is not supported by lirc_serial directly
> (in particular, lirc_serial wants to get IO port address in its module
> parameters, and addresses for PCI devices are dynamic and may change
> between boots).

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