Re: [irda-users] Raw IR read/write with Actisys 220L+

[Pascal H. <ph...@gm...>]

Thank you for this quick answer.
I understand that you advice me to do initialise the dongle in user
space and then open /dev/ttyS0 (if dongle on commport 1) as a normal
serial port. I'm going to analyse the actisys-sir.c driver.

I like your proposal. I try!

Best Regards
P. Henck

2008/3/14, David Basden <dav...@rc...>:
> Hi,
>
>  If you're comfortable looking at the kernel drivers, maybe take a look
>  at sirdev_raw_read and sirdev_raw_write (and nearby) in
>  drivers/net/irda/sir_dev.c
>
>  I doubt that the hooks there were at all intended for what you are
>  trying to do, but the calls are at least aware of the rest of the stack,
>  while still allowing raw reads and writes. (This may not work without
>  modification, but I suspect it would be the best place to start if you want to
>  coexist with the irda stack, or at least use the hardware drivers)
>
>  Most of what the actisys dongle driver itself (actisys-sir.c) does is just to
>  reset the dongle, bring it up into a known state, and then set the
>  line speed. If you really want to avoid the irda stack altogether,
>  it should be trivial to do this in userspace and avoid having to write
>  a totally new kernel driver.
>
>  David
>
>
>  On Fri, Mar 14, 2008 at 01:42:34PM +0100, Pascal Henck wrote:
>  > Hello,
>  >
>  > I'm new in Linux and IrDA drivers so maybe my question is stupid. :)
>  >
>  > We have developped medical devices with Infra-red communicationand our
>  > own OS. Our communication layer is more or less the IrPhy layer (SIR)
>
> > with a receiver frequency shorter (~100?s). It works fine.
>
> >
>  > Now, we want to develop a new device with a backward compatibility. I
>  > have to evaluate different solutions.
>  >
>  > I have an Actisys 220L+ connected to my PC. Is a way to establish
>  > communication with this dongle and my device without the IRDA stack?
>  >
>  > A simple open ("/dev/ttyS0") does not work.  If I load the module
>  > actisys, I have also all the stack. Does it mean I must write a simple
>  > driver derived from actisys or is there a way to shortcut the stack?
>  > Or I have understood nothing at all?
>  >
>  > Thank for your help
>  > P. Henck
>  >
>
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