[pyusb-users] PyUSB : used for bulk

[Prince A. RAMAHEFA-A. <pri...@gm...>]

Hello,

I've make this test on PyUSB to recover the data sent of the
microcontroller :

>import time
>import usb.util
>import usb.backend
>import os
>import sys
>from usb import *
>import ctypes
>from ctypes import c_ubyte

>import time


>ep_write=0x01
>ep_read = 0x81


># find our device
>dev = usb.core.find(idVendor=0x04D8, idProduct=0x0204)

># was it found?
>if dev is None:
>    raise ValueError('Device not found')

># set the active configuration. With no arguments, the first
># configuration will be the active one
>dev.set_configuration()

># get an endpoint instance
>cfg = dev.get_active_configuration()

>d1 = time.time()

>while i<10000:
>    dev.write(ep_write, [0], 0, 18)
>    data = dev.read(ep_read, 64, 0, 18)
>    i = i+1

>d2 = time.time()
>print d2-d1

and I have :
    >pythonw -u "py_libusb.py"
20.8320000172
>Exit code: 0