On Sun, Aug 7, 2011 at 1:24 PM, Wander Lairson Costa <wander.lair...@gmail.com> wrote: > 2011/8/7 chris clark <clac...@gmail.com>: >> 2) reset() problem (slightly different to known issue in readme for >> libusb-1.0, I guess as I'm using libusb-01). The symptom I see is that >> the TFT display appears to power off, I get no errors and no hangs. >> When I try to re-run my script to send a new image I get time outs (it >> isn't like the device isn't there as it opens fine.. but that may be >> an artifact about the way libusb drivers work under Windows). Trace >> back @eom for the 2nd run when the display is "off". Removing reset() >> is the workaround here too and it works fine, I can re-run my script >> under Windows and the display updates with the new image. When I ran a >> debugger over the reset, the first time I got no problem (until this >> point reset consistently "failed" for me), subsequent runs all "fail" >> (even if I wait a few secs for each method call) and cause power off >> at core.py:565 self._ctx.backend.reset_device(self._ctx.handle). Once >> the TFT powers off I need to reboot the machine (kinda painful, any >> ideas on how to re-start it or is this device specific?). >> > > Bear in mind that after a reset, you have to do set_configuration > again, as the device was just plugged in. If you are doing this, this > may be a firmware problem. Do you face any reset problem under Linux?
I do not have the same problem under Linux. I'm not even sure how I'd power it off (assuming that is what happens) under Linux. I'm just running the script, it exits, and I run it again. The set_configuration() is the first thing it does (and that is successful), its the write that doesn't. My guess is that this is a libusb issue but I wouldn't even know where to start with that. Luckily omitting the reset works fine under Windows (in my simple run/exit loop, I'm about to do a soak test over night of multiple writes) >> Slightly off topic, the PyUSB wiki appears to be down/empty (no errors >> blank screen), http://pyusb.wiki.sourceforge.net/ >> > > PyUSB was moved to Trac, you can access it at > http://sourceforge.net/apps/trac/pyusb/ Great! I'll have a scan through that. Could you update the sourceforge project page with that info? https://sourceforge.net/projects/pyusb/ links the wiki (and it lists it as the project page). Thanks for the quick response. Chris ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos & much more. Register early & save! http://p.sf.net/sfu/rim-blackberry-1 _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
