python 串行编程简单例程

#!/usr/bin/python
# -*- coding:utf-8 -*-
#pyser.py
import threading
import serial
import time

class ser_para:
def __init__(self):
self.port = "COM1"
self.baudrate = 9600
self.timeout = 10

class pySer(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.setDaemon(True)
self.stateFlag=False
#        self.ser=serial.Serial("COM1",9600)
self.ser=serial.Serial()
a = ser_para()
self.ser.port = a.port
print self.ser
if(self.ser.isOpen()):
print a.port,"is opened"
else:
self.ser.open()
def run(self):
self.stateFlag=True
while(self.stateFlag):
if(self.ser.inWaiting()>0):
time.sleep(0.05)
self.task(self.ser.read(self.ser.inWaiting()))
self.ser.close()
def stop(self):
self.stateFlag=False
def task(self,data):
pass #/*串口数据处理*/
def write(self,data):
self.ser.write(data)

#主程序.py
#import pyser

#s=pyser.pySer()
s=pySer()
s.start()
s.write("^^^^^^^^^^^^^^^^^^^^^^^^^^")
s.stop()