On Wed, Jun 27, 2012 at 1:30 PM, Grigor Kolev wrote:
> Hi!
>
> I try to read data from USB Fingerprint reader
>
> I connect wit reader and it work
>
> import sys
>
> import usb.core
>
> import usb.util
>
>
>
> VENDOR_ID=0x045E
>
> PRODUCT_ID=0x00BD
>
> DATA_SIZE=64
>
>
>
> device = usb.core.find(idVendor=VENDOR_ID, idProduct=PRODUCT_ID)
>
>
>
>
>
>
>
> try:
>
> device.set_configuration()
>
>
>
> except usb.core.USBError as e:
>
> sys.exit("Could not set configuration: %s" % str(e))
>
>
>
> endpoint = device[0][(0,0)][0]
>
> print endpoint
>
>
>
> data = []
>
> swiped = False
>
> print "Send a code..."
>
> a = 0
>
> while 1:
>
> try:
>
> dev = device.read(endpoint.bEndpointAddress,
>
> endpoint.wMaxPacketSize)
>
> data.append(dev.buffer_info())
This looks wrong to me. device.read() returns the data as an array.
The buffer_info() method return the address and length of this array.
You'd want to append the elements themselves of this array to your
"data" array:
data.extend(dev)
Also, if you're not 100% sure you are using the right endpoint, please
show us the output from "lsusb -d 045E:00BD -v" and a link to any
documentation that you have on the device.
Tormod
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