Python在Windows下操作CH341DLL

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 1 #! /usr/bin/env python 2 #coding=utf-8 3 import os 4 import time 5 from ctypes import * 6  7 class CH341(): 8     def __init__(self, dev = 0xb8): 9         self.dev_addr = dev10 11     def read(self, addr):12         ch341 = windll.LoadLibrary("CH341DLL.dll")13         ch341.CH341OpenDevice(0)14         ch341.CH341SetStream(0, 0x82)15         obuf = (c_byte * 2)()16         ibuf = (c_byte * 1)()17         obuf[0] = self.dev_addr18         obuf[1] = addr19         ch341.CH341StreamI2C(0, 2, obuf, 1, ibuf)20         ch341.CH341CloseDevice(0)21         return ibuf[0] & 0xff22 23     def write(self, addr, dat):24         ch341 = windll.LoadLibrary("CH341DLL.dll")25         ch341.CH341OpenDevice(0)26         ch341.CH341SetStream(0, 0x82)27         obuf = (c_byte * 3)()28         ibuf = (c_byte * 1)()29         obuf[0] = self.dev_addr30         obuf[1] = addr31         obuf[2] = dat & 0xff32         ch341.CH341StreamI2C(0, 3, obuf, 0, ibuf)33         ch341.CH341CloseDevice(0)

 

Python在Windows下操作CH341DLL