usb/149283: avrdude unable to talk to Arduino board (via uftdi)

[Hans Petter Selasky]

On Wednesday 04 August 2010 22:21:32 Marcin Cieslak wrote:
> On Wed, 4 Aug 2010, Joerg Wunsch wrote:
> > As Marcin Cieslak wrote:
> >> Checked with the same hardware (dual-boot) and Microsoft
> >> Vista (with arduino-0018 IDE) and the board can be
> >> contacted and programmed without any problems.
> > 
> > Your check on Windows has been using a stock AVRDUDE (e.g., a WinAVR
> > compilation), too?  Or another tool?
> 
> On Windows I have used arduino Java IDE. Arduino IDE distribution
> actually includes a whole WinAVR stack including avrdude.exe,
> but I didn't pay attention what is actually used.
> I will reboot to Windows now and check the commandline invocation.
> 
> On FreeBSD arduino the Java IDE tries to use avrdude and fails the same
> was as from commandline.
> 
> > IIRC, the Arduino bootloader requires some special tricks in order to
> > talk to it.  I think AVRDUDE v5.10 still lacks that feature.  Could
> > you try the SVN version of AVRDUDE?
> 
> AVRDUDE is mentioned for example here
> http://www.arduino.cc/playground/FreeBSD/CLI as the tool to use.
> 
> I have tried "-c arduino" or "-c stk500v1" with trunk and I get still
> the same affect as with 5.10 (Programmer timeout).
> 
> What maybe important: TX/RX LED on the board don't react at all
> when trying to use avrdude (there is only a single blink
> on firmware LED - which means bootloader start).
> 
> With Windows - TX/RX indicated clearly some activity.
> 
> > (I don't see a GNATS ID in the subject.  Has this been actually filed
> > via send-pr?)
> 

You can try to comment out:

        /* clear stall at first run */
        mtx_lock(&sc->sc_mtx);
        usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]);
        usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]);
        mtx_unlock(&sc->sc_mtx);

In uftdi_attach in sys/dev/usb/serial/uftdi.c.

--HPS