#!/usr/bin/env python3
import time

# import usb.backend.libusb1
# backend = usb.backend.libusb1.get_backend(find_library=lambda x: "/usr/lib/x86_64-linux-gnu/libusb-1.0.so")
# dev     = usb.core.find(..., backend=backend)

import Pyusb
i=16384
Pyusb.Write()
start = time.time()

# while i>0:
#     Pyusb.Write()
#     Pyusb.Read()
#     i-=1
Pyusb.Read()
end = time.time()
print("读取1MB数据")
print("时间：", end-start)
print("速率：", 1/256/(end-start))