Le 13/05/2016 à 15:10, Jeffrey Nichols a écrit :
On 5/13/2016 9:03 AM, Nicolas Pinault wrote:
Le 12/05/2016 à 17:15, Wander Lairson Costa a écrit :
2016-05-12 11:40 GMT-03:00 Nicolas Pinault<nicol...@aaton.com>:
Hi,
Is it possible to retrieve USB bus topology with PyUSB ?
Yes, you will need to use the Device object "port_number" and "bus" properties.
While it is enough for my application, I don't see how to reconstruct
the USB tree with just "port_number".
There's also "port_numbers", assuming you're using a somewhat recent
libusb-1.0 version as your backend. Combine that with the bus
attribute, and you can get a representation of the physical attachment
point of the device.
I already tried to use "port_numbers" but this field was always blank.
After updating libusb-1.0, this field is not blank anymore.
What I don't understand is that bus/port_number numbers are not unique.
On my system :
IdVendor8086 IdProduct=1E26 bus=1 Address=1 port=0
IdVendor8086 IdProduct=1E2D bus=2 Address=1 port=0
* IdVendor0204 IdProduct=6025 bus=1 Address=6 port=1 ports = (1, 6, 1)
IdVendor0424 IdProduct=2513 bus=1 Address=2 port=6 ports = (1, 6)
+ IdVendor046D IdProduct=C061 bus=2 Address=5 port=1 ports = (1, 1)
IdVendor0529 IdProduct=0001 bus=1 Address=4 port=5 ports = (1, 5)
IdVendor2CFF IdProduct=0002 bus=1 Address=5 port=2 ports = (1, 6, 2)
IdVendor413C IdProduct=2107 bus=2 Address=2 port=2 ports = (1, 2)
+ IdVendor8087 IdProduct=0024 bus=2 Address=4 port=1 ports = (1,)
* IdVendor8087 IdProduct=0024 bus=1 Address=3 port=1 ports = (1,)
IdVendor8564 IdProduct=4000 bus=3 Address=20 port=8 ports = (8,)
IdVendor8086 IdProduct=1E31 bus=3 Address=1 port=0
The lines marked with a + or a * contains same bus/port_number numbers.
Only port_numbers field is different.
What does this mean ?
Regards,
Nicolas
Jeff
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Mobile security can be enabling, not merely restricting. Employees who
bring their own devices (BYOD) to work are irked by the imposition of MDM
restrictions. Mobile Device Manager Plus allows you to control only the
apps on BYO-devices by containerizing them, leaving personal data untouched!
https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
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