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
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