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
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