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通过两个进程分别读写串口，并把发送与接收到的内容记录在blog中，收到q时程序结束并退出
import threading,time
import serial
import string
class SerThread:
def __init__(self, Port=0):
#初始化串口、blog文件名称
self.my_serial = serial.Serial()
self.my_serial.port=Port
self.my_serial.baudrate = 9600
self.my_serial.timeout = 1
self.alive = False
self.waitEnd = None
fname=time.strftime("%Y%m%d")#blog名称为当前时间
self.rfname='r'+fname #接收blog名称
self.sfname='s'+fname #发送blog名称
self.thread_read= None
self.thread_send=None
def waiting(self):
# 等待event停止标志
if not self.waitEnd is None:
self.waitEnd.wait()
def start(self):
#开串口以及blog文件
self.rfile=open(self.rfname,'w')
self.sfile=open(self.sfname,'w')
self.my_serial.open()
if self.my_serial.isOpen():
self.waitEnd = threading.Event()
self.alive = True
self.thread_read = threading.Thread(target=self.Reader)
self.thread_read.setDaemon(True)
self.thread_send=threading.Thread(target=self.Sender)
self.thread_send.setDaemon(True)
self.thread_read.start()
self.thread_send.start()
return True
else:
return False
def Reader(self):
while self.alive:
try:
n=self.my_serial.inWaiting()
data=''
if n:
data= self.my_serial.read(n).decode('utf-8')
print ('recv'+' '+time.strftime("%Y-%m-%d %X")+' '+data.strip())
print (time.strftime("%Y-%m-%d %X:")+data.strip(),file=self.rfile)
if len(data)==1 and ord(data[len(data)-1])==113: #收到字母q，程序退出
break
except Exception as ex:
print (ex)
self.waitEnd.set()
self.alive = False
def Sender(self):
while self.alive:
try:
snddata=input("input data:\n")
self.my_serial.write(snddata.encode('utf-8'))
print ('sent'+' '+ time.strftime("%Y-%m-%d %X"))
print (snddata,file=self.sfile)
except Exception as ex:
print (ex)
self.waitEnd.set()
self.alive = False
def stop(self):
self.alive = False
#self.thread_read.join()
#self.thread_send.join()
if self.my_serial.isOpen():
self.my_serial.close()
self.rfile.close()
self.sfile.close()
if __name__ == '__main__':
ser = SerThread('com4')
try:
if ser.start():
ser.waiting()
ser.stop()
else:
pass;
except Exception as ex:
print (ex)
if ser.alive:
ser.stop()
print ('End OK .');
del ser;
以上这篇Python3 实现串口两进程同时读写就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。
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