Hello I'm new here and I have a problem with USB-to-parallal converter based on PL2305 chip (067b:2305 Prolific Technology, Inc. PL2305 Parallel Port).
I can find device and read GET_DEVICE_ID, but GET_PORT_STATUS, SOFT_RESET and write to endpoints is not working :/ I use pyusb-1.0.0b1-py2.7 Here is my code: import usb.core import usb.util dev = usb.core.find(idVendor=0x067b, idProduct=0x2305) dev.set_configuration() cfg = dev.get_active_configuration() dev.set_interface_altsetting(interface = 0, alternate_setting = 1) interface = cfg[(0, 1)] # Bidirectional, other are also not working ep = usb.util.find_descriptor(interface, find_all=True) dev.ctrl_transfer(161, 0, 0, 0, 256) # GET_DEVICE_ID works ok # below nothing works :( # GET_PORT_STATUS >>> dev.ctrl_transfer(161, 1, 0, 0, 1) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/core.py", line 711, in ctrl_transfer self.__get_timeout(timeout) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/backend/libusb1.py", line 836, in ctrl_transfer timeout)) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/backend/libusb1.py", line 571, in _check raise USBError(_str_error[ret], ret, _libusb_errno[ret]) usb.core.USBError: [Errno 32] Pipe error # SOFT_RESET >>> dev.ctrl_transfer(33, 2, 0, 0, " ") # i'm not sure it is correct Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/core.py", line 711, in ctrl_transfer self.__get_timeout(timeout) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/backend/libusb1.py", line 836, in ctrl_transfer timeout)) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/backend/libusb1.py", line 571, in _check raise USBError(_str_error[ret], ret, _libusb_errno[ret]) usb.core.USBError: [Errno 32] Pipe error # write data >>> ep[0].write("aaa") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/core.py", line 287, in write return self.device.write(self.bEndpointAddress, data, self.interface, timeout) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/core.py", line 633, in write self.__get_timeout(timeout) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/backend/libusb1.py", line 771, in bulk_write timeout) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/backend/libusb1.py", line 872, in __write _check(retval) File "/usr/local/lib/python2.7/dist-packages/pyusb-1.0.0b1-py2.7.egg/usb/backend/libusb1.py", line 571, in _check raise USBError(_str_error[ret], ret, _libusb_errno[ret]) usb.core.USBError: [Errno 110] Operation timed out Regards and thanks for help Perf ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349351&iu=/4140/ostg.clktrk _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users