2012/4/22 Er. Jay Vora <jay.vora...@gmail.com>: > Hello Experts, >> >> Thanks for PyUSB. >> >> I've been trying to read data from USB device. >> Everything goes right, but I am not able to read anything from it. >> >> Any help would be greatly appreciated. >> >> File "/usr/local/lib/python2.7/dist-packages/usb/backend/libusb10.py", >> line 403, in _check >> raise USBError(_str_error[ret], ret, _libusb_errno[ret]) >> >> Thanks. >> > > My code: > dev = usb.core.find(idVendor=0x0590, idProduct=0x0028) > if dev is None: > print "Device not found" > else: > print "Device found" > if dev.is_kernel_driver_active(0) is True: > print "but we need to detach kernel driver" > dev.detach_kernel_driver(0) > print "claiming device" > usb.util.claim_interface(dev, 0) > print "release claimed interface" > > usb.util.release_interface(dev, 0) > print 'Now reading data' > #dev.attach_kernel_driver(0) > > dev.set_configuration()
You must claim the interface *after* set_configuration > > #dev.write(2,'Hello') > #dev.write(1,'g') > #dev.write(2,'VER00',0) > > ret = dev.read(0x81,8,0) # read(size,interface) > print '::::::::::::::', ret > Isn't there any command you should send to get a responde? > -- > > Thanks, > Regards, > > Er. Jay Vora > M : 91 - 9879354457. > (Not miles, just an email away...) > Twitter Facebook LinkedIn Blogger > "No Seconds to be Wasted for Formalities, I have a lot to Execute !" - Jay > Vora > > ------------------------------------------------------------------------------ > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > _______________________________________________ > pyusb-users mailing list > pyusb-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pyusb-users > -- Best Regards, Wander Lairson Costa ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
