Hi Micah, First of all you do better getting some knowledge about USB. USB is not just like another serial protocol, it is a complete computer bus, with so many details. Later, maybe you want to give a try to PyUSB 1.0, which besides having an easier API, has a tutorial available on PyUSB website. Although still in alpha stage, many people have been using it successfully.
2010/11/2 Micah Carrick <mi...@greentackle.com>: > Hey, > > I'm a bit new to USB. I have a MagTek credit card reader that I'm > interfacing with Python. > > When you swipe a card, the card data is sent on the "Interrupt In" pipe > using an 'Interrupt Report". > > Now, I have already been able to read and parse the card data by using > open(), read(), and close() on /dev/usb/hiddev0, however, I would prefer to > interface using the USB library so that I can verify the right device is > connected and can reset the device. I also have the specs from the > manufacturer's website. I can't quite figure out how to use the usb module > though. This is all I have: > > VENDOR_ID = 0x0801 > PRODUCT_ID = 0x0002 > > buses = usb.busses() > for bus in buses: > for device in bus.devices: > if device.idVendor == VENDOR_ID and device.idProduct == PRODUCT_ID: > print "Found MagTek card reader" > # now how do I wait for a read? > > > So I can find my device using the usb module but I do not know how to wait > for and then read from the device. Can anybody point me in the right > direction? > > > > > > ------------------------------------------------------------------------------ > Nokia and AT&T present the 2010 Calling All Innovators-North America contest > Create new apps & games for the Nokia N8 for consumers in U.S. and Canada > $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing > Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store > http://p.sf.net/sfu/nokia-dev2dev > _______________________________________________ > pyusb-users mailing list > pyusb-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pyusb-users > > -- Best Regards, Wander Lairson Costa ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ pyusb-users mailing list pyusb-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pyusb-users
