> Am Sonntag, 6. Juli 2003 19:00 schrieb Rob van Nieuwkerk:
> > > Am Sonntag, 6. Juli 2003 15:09 schrieb Rob van Nieuwkerk:
> > > > Oliver Neukum wrote:
> > > > > > I don't mind dropped or garbled frames at all. But the "dying" camera
> > > > > > is fatal. This problem is driving me nuts. Any help or other suggestions
> > > > > > are appreciated !
> > > > >
> > > > > If the camera is the only device on the bus, could you check whether you
> > > > > still get interrupts for USB?
> > > >
> > > > Hi Oliver,
> > > >
> > > > Yes the camera is the only USB device on the bus.
> > > > And I just checked: after there are no more interrupts for USB after
> > > > the camera has died.
> > > >
> > > > There is a kernel message from the pwc driver:
> > > >
> > > > "pwc_isoc_handler() called with status -75 [Babble (bad cable?)]"
> > > >
> > > > Reading the pwc-if.c shows that the -75 corresponds with EOVERFLOW.
> > > > Beyond that I'm clueless because I know almost nothing about the USB-stuff ..
> > >
> > > Are both of you seeing this problem using OHCI?
> >
> > Yes.
>
> Just as an experiment, could you connect a second device to the bus?
Sure.
But I'll need to find/make another USB connector: the board I use is
a small embedded Geode board with only one USB connector, the second one
is just 4 pins on the board. Will work something out.
But what would be a usable device as the second device ?
At the moment I can choose between:
- another Philips webcam
- SanDisk CF reader
- Nokia DKU-5 mobile phone cable
Another camera will probably suffer from the same problem and the CF-reader
& cable won't probably generate interrupts by themselves ? I can find/buy
another USB device if necessary. Will any of the above do ?
greetings,
Rob van Nieuwkerk
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