Python调用DLL操作抄表机

dll = windll.LoadLibrary('JBA188.dll')
a = dll.test()
print '测试设备连接状态%s' % a

srcName = c_char_p("publish_pd.bin")
decName = c_char_p('d:\\publish_pd.bin')
b = dll.upfile(srcName,decName)
print '将文件上传至计算机%s' % b

pStr = c_char_p()
pStr.value = ''
c = dll.getdatetime(pStr);
print '读取抄表机时间%s' % c
print pSt