Wander Lairson wrote: > By I remmember from USB Spec, endpoint 0x81 should be IN (MSB 1) and > endpoint 0x2 should be OUT (MSB 0). I don't what are exactly the side > effects of inverting them... Did you write the device firmware also? > If not, probably you should swap the values of PLUG_BULK_IN_EP and > PLUG_BULK_OUT_EP. If so, revise your fw source code to follow the > correct USB Spec. After that, report the result to the list. > Very interesting, no I did not write the firmware and I have nothing to do with it. I have tried swapping the values and it causes it to fail at the "Hello" with a "usb.USBError: No error" message.
I noticed that pyGarmin has the same values as I do. http://bazaar.launchpad.net/~pygarmin-dev/pygarmin/trunk/annotate/head%3A/garmin.py I was thinking that when I am doing the read the interrupt might not have any data and that might be why it crashes: read_bytes = self.handle.interruptRead(PlugUSBDevice.PLUG_BULK_OUT_EP,8); usb.USBError: No error Do I have to catch the error and ignore it in this case just because someone has not put a pen against the board yet? Regards Phil
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