# -*- coding: utf-8 -*-
import os
import win32com.client
import time
import serial
dm = win32com.client.Dispatch('dm.dmsoft')
#current version
dm.SetPath("E:\dm\haha")
dm.SetDict(0,"E:\dm\haha\dm_soft.txt")
dm.useDict(0)

com3=serial.Serial('com3',57600)

string='[MM11]'

#转成16进制
i=1000
while (i!=0):
i=i-1
com3.write(string.encode("utf8"))