access violation about pywinusb HOT 3 CLOSED

Hello Maarten,

Is there anything special running on your machine? posible any VM running?

Try to use another USB port.

Also, if your machine is Windows 64 try both Python 32 bits and Python 64.

I would recommend using Python 2.7.x only, you can try Python 3 after you
know your script is working.

And definitely try with other USB/HID device first in case your device has
broken descriptors.

Best regards

Rene

On Wed, Feb 13, 2013 at 1:24 PM, vermmaa [email protected] wrote:

Hi,

A came across you project in search of an solution to read out my Dymo usb
scale. I'm a php developer and i'm not used to working with python so I
hope i didn't make a stupid mistake.

When i run the raw data example i get following error:

D:\pywinusb\examples>python raw_data.py
Choose a device to monitor raw input reports:

0 => Exit
1 => Logitech USB Gaming Mouse(vID=0x046d, pID=0xc049)
2 => Logitech USB Gaming Mouse(vID=0x046d, pID=0xc049)
3 => DYMO M10 10 Kg Digital Postal Scale(vID=0x0922, pID=0x8006)

Device ('0' to '3', '0' to exit?) [press enter after number]:

3
Traceback (most recent call last):
File "raw_data.py", line 67, in
raw_test()
File "raw_data.py", line 39, in raw_test
device.open()
File
"C:\Python33\lib\site-packages\pywinusb-0.3.2-py3.3.egg\pywinusb\hid\core
.py", line 468, in open
ptr_preparsed_data) )
OSError: exception: access violation reading 0x000007FE0036F5A0

I'm using Windows 7, I have disabled ACL. First I tried Python 2.7 which
didn't work and gave me no error then I switched to 3.3 which produced the
error.

thx,

Maarten

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/5.

from pywinusb.

I almost forgot it... Did you get the code from PyPi or from GitHub?

On Wed, Feb 13, 2013 at 7:56 PM, René Aguirre [email protected]:

Hello Maarten,

Is there anything special running on your machine? posible any VM running?

Try to use another USB port.

Also, if your machine is Windows 64 try both Python 32 bits and Python 64.

I would recommend using Python 2.7.x only, you can try Python 3 after you
know your script is working.

And definitely try with other USB/HID device first in case your device has
broken descriptors.

Best regards

Rene

On Wed, Feb 13, 2013 at 1:24 PM, vermmaa [email protected] wrote:

Hi,

A came across you project in search of an solution to read out my Dymo
usb scale. I'm a php developer and i'm not used to working with python so I
hope i didn't make a stupid mistake.

When i run the raw data example i get following error:

D:\pywinusb\examples>python raw_data.py
Choose a device to monitor raw input reports:

0 => Exit
1 => Logitech USB Gaming Mouse(vID=0x046d, pID=0xc049)
2 => Logitech USB Gaming Mouse(vID=0x046d, pID=0xc049)
3 => DYMO M10 10 Kg Digital Postal Scale(vID=0x0922, pID=0x8006)

Device ('0' to '3', '0' to exit?) [press enter after number]:

3
Traceback (most recent call last):
File "raw_data.py", line 67, in
raw_test()
File "raw_data.py", line 39, in raw_test
device.open()
File
"C:\Python33\lib\site-packages\pywinusb-0.3.2-py3.3.egg\pywinusb\hid\core
.py", line 468, in open
ptr_preparsed_data) )
OSError: exception: access violation reading 0x000007FE0036F5A0

I'm using Windows 7, I have disabled ACL. First I tried Python 2.7 which
didn't work and gave me no error then I switched to 3.3 which produced the
error.

thx,

Maarten

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/5.

from pywinusb.

Hi,

I now tried the 64bit version of Python 2.7 and that version works.

Thx for the tip and the nice piece of code :)

Kind regards,

Maarten

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