On Tue, Nov 30, 1999 at 11:05:03AM +0100, Dag Brattli wrote:
> Jean Tourrilhes <[EMAIL PROTECTED]> writes:
>
> Yes, I've applied it and fixed the Config.in and Makefile as well. But
> could you write something for Documentation/Configure.help?
Say Y here if you want to build support for the old Belkin SmartBeam
dongle. If you want to compile it as a module, say M here and read
Documentation/modules.txt.
The Belkin SmartBeam dongle (F5F500) come in two variants. The only
way to distinguish those is to open the dongle and check the presence
of a jumper (the jumper, on the new dongle, toggle between IrDA and
ASK modes). This driver only support the old dongle. The old dongle
is also limited to 9600 b/s (which is not very fun).
To activate support for old Belkin dongles you will have to insert
"irattach -d old_dongle" in the /etc/irda/drivers script.
> Don't think I have to test it to figure out what's wrong. How much time
> does the machine use to transmit a 2K frame (actually 2050 bytes + framing
> and stuffing) over a 9600bps link? Remember that the max turn time is 500
> ms. Yes, we need to make sure we don't allow such large frames at such a
> low speed. I hasn't been fixed yet, since I don't think anybody has tried
> this before ;-)
>
> >From the IrLAP spec 6.6.5 (page 40):
>
> ... "The actual maximum frame size for the connection must be adjusted to
> accommodate the baud rate and maximum turn around time." ...
Ok, that's only that, so it's as good as solved ;-) Yes, it's
seem that I've got a way to torture your code in unexpected ways...
Note that it may explain some of the problem that people are
seeing :
http://www4.pasta.cs.uit.no/pipermail/linux-irda/1999-November/000604.html
> -- Dag
Jean
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