[irda-users] Re: no discovery with MA620 on 2.6.3

[Martin D. <li...@md...>]

On Tue, 24 Feb 2004, Jean Tourrilhes wrote:

> Thanos Kyritsis wrote :
> > 
> > I've been watching the previous thread on MA620 dongle and wanted to 
> > also test it.
> [...]
> > The dongle never discovers my Siemens ME45 mobile phone.
> > When I bring the phone close to the dongle, the receiving led of the 
> > dongle flashes, but it never discovers it.
> 
> 	Hum... Martin is the one that was looking into that. 2.6.3
> includes many change to the ma600 and irtty_sir drivers that should
> have finished fixing that.

Well, if the cause is in the irda-system and the ma620 is really using the 
same dongle protocol as the ma600-serial - yes, I hope it would work.

> 	As the setup is so complex, I would prefer to decouple the
> problems. Martin, do we have a confirmation that the ma600 is working
> with the regular serial dongle ?

Unfortunately not!

Right, this would make a good test to make sure the irda-side is correct 
now. Next would be to connect the ma600 to a separate pl2303 usb-rs232 
converter to check whether it's still working. If yes, the ma620 should 
work as well, provided it is really using the same dongle protocol.

Anybody with a ma600 out there willing to give it a try? Note, 
irda-utils-0.9.17-pre should be used to avoid the popen-race in irattach, 
particularly with usbserial-setup.

Personally, I'm starting to wonder about pl2303 being the culprit. It's 
too early to point in that direction, but with my actisys serial dongle 
connected to a separate pl2303 I've seen several times where it was 
initially working but after running nothing but continous discovery for 
some 10 minutes all of the sudden it started seeing nothing but framing 
errors from pl2303.

Doing the same directly on 16550A port works for hours without getting a 
single FE. And, IIRC other (non-irda) users of pl2303 have reported some 
unresolved issues with pl2303 in the past. I was already thinking about 
some issue with current requirements of the irda dongles when drawing 
their power from the modem lines - but as long as ma620 users claim it's 
working with Windows I don't see how this might be a hardware issue. Maybe 
the Linux-pl2303 driver is missing some undocumented stuff...

Martin