Wander Lairson Costa wrote: > 2013/12/2 Bartosz Alchimowicz<p...@poczta.onet.pl>: >> Wander Lairson Costa wrote: >> >> Hi >> >> >>> Sorry for the delay. According to libusb documentation, a pipe error >>> is related to sending a control request not supported by the device. >>> Are these control transfers documented by the manufacturer or part of >>> the USB class spec? >> >> >> According to documentation this chip is a usb printer class device >> ( http://www.krn.ru/Support/Docs/GMUP/ds_pl2305_v11.pdf ). >> >> Section 5.2 (Printer Class-Specific Device Requests) in this spec tells that >> GET_PORT_STATUS and SOFT_RESET are supported. >> > > This sounds weird. I will review the PyUSB code to see if I find some > mistake.
Thanks! > BTW, did notice if the usbprint driver gets loaded when you > connected your device? It might be causing the problems... I have blacklisted usblp. Below are loaded modules (concerning usb): usbhid 31554 0 hid 60152 1 usbhid btusb 17278 2 bluetooth 103791 23 btusb,rfcomm,bnep usbnet 17699 1 cdc_ncm mii 12595 1 usbnet usbcore 104555 10 ehci_hcd,xhci_hcd,cdc_acm,cdc_wdm,usbnet,cdc_ncm,uvcvideo,btusb,usbhid usb_common 12338 1 usbcore Regards Perf ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
