2014-09-03 22:49 GMT-03:00 Setia Budi <boedy.b...@gmail.com>: > Dear all, > Currently I have been wrote a simple Python script (using PyUSB) to > communicate with an RFID reader. It is working well so far. > Recently I need to deal with control to RFID reader from a single computer. > I am aware about this documentation page > https://github.com/walac/pyusb/blob/master/docs/tutorial.rst which mention > about dealing with multiple identical devices, however, I couldn't > understand it. > Is anyone can help me with some examples to deal with this situation? Real > example would be very helpful for me :) >
If you use usb.core.find(find_all=True, IdVendor=..., idProduct...) you will get all devices connected with the idVendor and idProduct supplied as an iterator. Each one is connected to a bus and has an associated address (just a id number in the bus). For example, if you have two devices connected and their idVendor and idProduct are, respectively, 0x1 and 0x2: devices = tuple(usb.core.find(find_all=True, idVendor=0x1, idProduct=0x2)) print devices[0].bus, devices[0].address print devices[1].bus, devices[1].address devices[0].set_configuration() devices[1].set_configuration() Did you get it? -- Best Regards, Wander Lairson Costa ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
