#-*-?coding:utf-8?-*-
#?Python3

#?Function:?Generate?random?bytearray?send?and?recv（loopback）?compare?send?bytes?and?recv?bytes

from?random?import?randint
import?ftd2xx

USB_DEVICE_NAME?=?b‘USB?<->?Serial?Converter‘
BUFFER_SIZE?=?65536?*?4

def?openUSB（name_byte_array）:
????for?i?in?range（16）:
????????try:
????????????usb?=?ftd2xx.open（i）
????????except:
????????????continue
????????if?usb.description==name_byte_array:
????????????usb.setTimeouts（10001000）
????????????usb.setUSBParameters（BUFFER_SIZEBUFFER_SIZE）
????????????usb.setBitMode（0xff?0x40）
????????????print（‘\n??opened?usb[%d]:?%s\n‘?%?（i?str（usb.description?encoding?=?“utf8“））?）
????????????return?True?usb
????????else:
????????????usb.close（）
????return?False?None
????????????
def?RandomBy

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\
?????文件??????????37??2019-08-12?11:01??FTDI-245fifo-interface-master\.gitattributes
?????文件????????1066??2019-08-12?11:01??FTDI-245fifo-interface-master\LICENSE
?????文件????????7704??2019-08-12?11:01??FTDI-245fifo-interface-master\README.md
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\RTL\
?????文件?????????316??2019-08-12?11:01??FTDI-245fifo-interface-master\RTL\README.md
?????文件????????7277??2019-08-12?11:01??FTDI-245fifo-interface-master\RTL\fifos.sv
?????文件????????5615??2019-08-12?11:01??FTDI-245fifo-interface-master\RTL\ftdi_245fifo.sv
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\
?????文件????????3078??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\Python_FTD2XX_guide.md
?????文件????????2115??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\Python_FTD3XX_guide.md
?????文件???????27416??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\ft232h_driver_download.png
?????文件???????57859??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\ft232h_ready.png
?????文件??????191950??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\ft232hconfig.png
?????文件???????36084??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\ft600_driver_download.png
?????文件???????62469??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\ft600_ready.png
?????文件??????110536??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\ports.png
?????文件???????11227??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\ss_python.png
?????文件??????112668??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\structure.png
?????文件???????35814??2019-08-12?11:01??FTDI-245fifo-interface-master\doc\timing.png
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\example\
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\FPGA\
?????文件????????1322??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\FPGA\FT232H_Test.qpf
?????文件????????4993??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\FPGA\FT232H_Test.qsf
?????文件????????1947??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\FPGA\ft232h_top.sv
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\Python\
?????文件????????1487??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\Python\usb_loopback_mass.py
?????文件????????1198??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\Python\usb_loopback_simple.py
?????文件????????3752??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_loopback\README.md
?????目錄???????????0??2019-08-12?11:01??FTDI-245fifo-interface-master\example\FT232H_massive_send\
............此處省略33個(gè)文件信息