I tried but I get the same report:
Traceback (most recent call last):
File "X:\epc601_demo_board\qt_creator\prvi\run_mojwidget.py", line 68, in
get_status
print("Received from USB: ", UsbConnection.epin.read(64, 100))
File "C:\Python31\lib\site-packages\usb\core.py", line 273, in read
return self.device.read(self.bEndpointAddress, size, self.interface,
timeout)
File "C:\Python31\lib\site-packages\usb\core.py", line 624, in read
self.__get_timeout(timeout)
File "C:\Python31\lib\site-packages\usb\_debug.py", line 53, in do_trace
return f(*args, **named_args)
File "C:\Python31\lib\site-packages\usb\backend\libusb01.py", line 448, in
bulk_read
timeout)
File "C:\Python31\lib\site-packages\usb\backend\libusb01.py", line 524, in
__read
buffer = array.array('B', '\x00' * size)
TypeError: an integer is required
You can see that there is 100 in the code.
Any other ideas?
Regards,
Igor
On Mon, Sep 27, 2010 at 2:42 PM, Wander Lairson <wander.lair...@gmail.com>wrote:
> It feels like some incompatibility bug with python 3. Try this:
>
> epin.read(64, 100)
>
> 2010/9/27 Igor Mohor <igor.mo...@gmail.com>:
> > Dear Gentleman,
> >
> > I need your help. I'm trying to read some data from the USB by using the
> > folowing code and I get the error.
> >
> >
> > PythonWin 3.1.2 (r312:79147, Mar 22 2010, 12:20:29) [MSC v.1500 32 bit
> > (Intel)] on win32.
> > Portions Copyright 1994-2008 Mark Hammond - see 'Help/About PythonWin'
> for
> > further copyright information.
> >>>> import usb.core
> >>>> import usb.util
> >>>> dev =usb.core.find(idVendor=0x04d8, idProduct=0x0204)
> >>>> dev.set_configuration()
> >>>> interface = dev.get_interface_altsetting()
> >>>> ep = usb.util.find_descriptor(interface,
> > ... custom_match = \
> > ... lambda e: \
> > ... usb.util.endpoint_direction(e.bEndpointAddress) == \
> > ... usb.util.ENDPOINT_OUT)
> >>>> epin = usb.util.find_descriptor(
> > ... interface,
> > ... custom_match = \
> > ... lambda e: \
> > ... usb.util.endpoint_direction(e.bEndpointAddress) == \
> > ... usb.util.ENDPOINT_IN)
> >>>> ep.write([0x80])
> > 1
> >>>> ep.write([0x80])
> > 1
> >>>> ep.write([0x80])
> > 1
> >>>> ep.write([0x81])
> > 1
> >>>> epin.read(64)
> > Traceback (most recent call last):
> > File "<interactive input>", line 1, in <module>
> > File "C:\Python31\lib\site-packages\usb\core.py", line 273, in read
> > return self.device.read(self.bEndpointAddress, size, self.interface,
> > timeout)
> > File "C:\Python31\lib\site-packages\usb\core.py", line 624, in read
> > self.__get_timeout(timeout)
> > File "C:\Python31\lib\site-packages\usb\_debug.py", line 53, in
> do_trace
> > return f(*args, **named_args)
> > File "C:\Python31\lib\site-packages\usb\backend\libusb01.py", line 448,
> in
> > bulk_read
> > timeout)
> > File "C:\Python31\lib\site-packages\usb\backend\libusb01.py", line 524,
> in
> > __read
> > buffer = array.array('B', '\x00' * size)
> > TypeError: an integer is required
> >>>>
> >
> >
> > When I execute the same code on the following system:
> >
> > Python 2.6.6 (r266:84297, Aug 24 2010, 18:46:32) [MSC v.1500 32 bit
> (Intel)]
> > on win32
> > Type "copyright", "credits" or "license()" for more information.
> >
> > I get the correct response which is:
> >
> >>>> epin.read(64)
> > array('B', [129, 1, 133, 74, 20, 208, 66, 49, 65, 160, 28, 16, 2, 88,
> 146,
> > 82, 4, 0, 64, 8, 4, 131, 20, 108, 130, 30, 1, 37, 1, 84, 138, 23, 146, 2,
> > 214, 0, 74, 96, 6, 76, 32, 220, 19, 68, 128, 200, 32, 6, 44, 148, 10, 9,
> 22,
> > 128, 58, 96, 34, 132, 0, 2, 109, 0, 2, 50])
> >>>>
> >
> >
> >
> > Can somebody help me to get the data also with version 3.1.2.
> >
> > Thanks and best regards,
> > Igor
> >
> >
> >
> >
> >
> ------------------------------------------------------------------------------
> > Start uncovering the many advantages of virtual appliances
> > and start using them to simplify application deployment and
> > accelerate your shift to cloud computing.
> > http://p.sf.net/sfu/novell-sfdev2dev
> > _______________________________________________
> > pyusb-users mailing list
> > pyusb-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/pyusb-users
> >
> >
>
>
>
> --
> Best Regards,
> Wander Lairson Costa
>
>
> ------------------------------------------------------------------------------
> Start uncovering the many advantages of virtual appliances
> and start using them to simplify application deployment and
> accelerate your shift to cloud computing.
> http://p.sf.net/sfu/novell-sfdev2dev
> _______________________________________________
> pyusb-users mailing list
> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
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