simple python code when @ simplnano

code：

 import serial,time,itertools

 try:
     ser=serial.Serial(2,115200,timeout=0)
 except:
     print 'Open COM2 Failed!!'

 #transno=(1,100,500,1380,1381)
 #transno=(1,20)
 indexsets=[[0],[1],[2],[3],[0,1],[0,2],[0,3],[1,2],[1,3],[2,3],[0,1,2],[0,1,3],[0,2,3],[1,2,3],[0,1,2,3]]
 indexsets=[[0,1,3],[0,1,2]]
 #indexsets_ts=[]

 def gene():
     for n in range(1,5):
         indexsets_ts+=list(itertools.combinations([0,1,2,3],n)) #forget what is itertool now
     return indexsets_ts

 #sig functions
 def sigsnd():
     for actmod in ('diract','apnact'):
         act(actmod)
         for connmod in ('TCP','UDP'):
             conn(connmod)
             connt=0
             for dismod in ('dirsht','closht'):
                 for sndmod in ('uctl','fixl'):
                     snd(sndmod)
                 dis(dismod)
                 if connt<1:
                     conn(connmod)
                 connt+=1

 def init():
     swrt(chr(0x27),1)
     swrt('\r\n',1)
     ser.write('+++')
     swrt('\r\n',1)
 def shutConn():
     swrt('at+cipshut',4)
 def cloShut():
     swrt('at+cipclose',4)
     swrt('at+cipshut',4)
 def cipmod():
     swrt('at+cipmode=0',2)
 def olmod():
     swrt('at+cipmode=1',2)
 def muxmod():
     swrt('at+cipmux=1',2)
 def sigmod():
     swrt('at+cipmux=0',2)
 def srd():
     srd=ser.readlines()
     for line in srd:
         print line
     fid=open('tcp_snd.log','a')
     fid.write(line)
     fid.close()
     return srd
 def swrt(atcmd_str,wt):
     #fid=open('tcp_snd.log','a')
     #fid.write(atcmd_str)
     #fid.close()
     ser.write(atcmd_str+'\r\n')
     time.sleep(wt)
     srd()
 def wrtmsg(transtr,wstm):
     ser.write(transtr+chr(0x1a))
     time.sleep(wstm)
     srd()
 def act(actmod):
     if actmod=='apnact':
         swrt('at+cstt="CMNET","",""',2)
         swrt('at+ciicr',4)
     if actmod=='diract':
         pass
 def conn(connmod):
     if connmod=='TCP':
         swrt('at+cipstart="TCP","124.205.119.38",1562',6)
     if connmod=='UDP':
         swrt('at+cipstart="UDP","124.205.119.38",1562',6)
 def snd(sndmod):
     if sndmod=='uctl':
         for tran in transno:
             for n in range(2):
                 swrt('at+cipsend',1)
                 wrtmsg(tran*'v',8)
     if sndmod=='fixl':
         for tran in transno:
             for n in range(2):
                 swrt('at+cipsend='+str(tran),1)
                 wrtmsg(tran*'v',8)
 def dis(dismod):
     if dismod=='dirsht':
         shutConn()
     if dismod=='closht':
         cloShut()

 #online mode function
 def modTs():
     for actmod in ('diract','apnact'):
         act(actmod)
         for connmod in ('TCP','UDP'):
             print connmod
             conn(connmod)
             connt=0
             for dismod in ('dirsht','closht'):
                 print dismod
                 olsnd()
                 dis(dismod)
                 print dismod
                 if connt<1:
                     conn(connmod)
                 connt+=1

 def olsnd():
     for rtm in range(2):
         for tran in transno:
             swrt(tran*'v',1)
             nmipmd()
             ato()
     nmipmd()
 def ato():
     swrt('ato',2)
 def nmipmd():
     ser.write('+++')
     time.sleep(3)
     srd()

 #mux-mode functions

 indset=[0,1,3]
 def muxTS(indset):
     for actmod in ('diract','apnact'):
         act(actmod)
         for dismod in ('dirsht','closht'):
             for x in range(2**len(indset)):
                 binstr=bin(int(str(x),10))[2:].rjust(len(indset),'')
                 typset=[]
                 for nc in binstr:
                     if nc=='':
                         typset.append('"TCP"')
                     else:
                         typset.append('"UDP"')
                 for ind in range(len(indset)):
                     constr='at+cipstart='+str(indset[ind])+','+typset[ind]+',"124.205.119.38",1562'
                     swrt(constr,7)
                 print 'wrt done' ##connect OK
                 for sndmod in ('uctl','fixl'):
                     for index in indset:
                         print indset,index
                         for tran in transno:
                             for n in range(2):
                                 if sndmod=='uctl':
                                     swrt('at+cipsend='+str(index),1)
                                     wrtmsg(tran*'v',15)
                                 else:
                                     swrt('at+cipsend='+str(index)+','+str(tran),1)
                                     wrtmsg(tran*'v',15)
                 dis(dismod)

 sndmod=''
 def muxmod():
     swrt('at+cipmux=1',2)

 def muxsnd(indset):
     for index in indset:
         print indset,index
         for tran in transno:
             for n in range(5):
                 if sndmod=='uctl':
                     swrt('at+cipsend='+str(index),1)
                     wrtmsg(tran*'v',15)
                 else:
                     swrt('at+cipsend='+str(index)+','+str(tran),1)
                     wrtmsg(tran*'v',15)

 #sigle-mode Ts
 init()
 shutConn()
 cipmod()
 sigmod()
 sigsnd()

 #online-mode Ts
 init()
 shutConn()
 cipmod()
 sigmod()
 olmod()
 modTs()

 #mux-mode Ts
 init()
 shutConn()
 cipmod()
 sigmod()
 muxmod()
 [muxTS(indset) for indset in indexsets]

 init()
 shutConn()
 ser.close()