小弟请教个问题，为什么这个python的串口通讯程序，只能收不能发啊
用SSCOM3.2发到这个程序的内容能受到，而从这个程序发出的内容，SSCOM3.2收不到# -*- coding: UTF-8 -*-
import sys,threading,time;
import serial;
import binascii,encodings;
import re;
import socket;
from struct import *;
class ComThread:
def __init__(self, Port=0):
self.l_serial = None;
self.alive = False;
self.waitEnd = None;
self.port = Port;
def waiting(self):
if not self.waitEnd is None:
self.waitEnd.wait();
def SetStopEvent(self):
if not self.waitEnd is None:
self.waitEnd.set();
self.alive = False;
self.stop();
def start(self):
self.l_serial=serial.Serial();
self.l_serial.port = self.port;
self.l_serial.baudrate = 115200;
self.l_serial.byteszie=8;
self.l_serial.stopbits=1;
self.l_serial.timeout =2;
self.l_serial.parity='N';
self.l_serial.open();
if self.l_serial.isOpen():
self.waitEnd = threading.Event();
self.alive = True;
self.thread_read = None;
self.thread_read = threading.Thread(target=self.FirstReader);
self.thread_read.setDaemon(1);
self.thread_read.start();
return True;
else:
return False;
def FirstReader(self):
while self.alive:
# 接收间隔
time.sleep(0.1);
try:
data = '';
n = self.l_serial.inWaiting();
if n:
data = data + self.l_serial.read(n);
for l in xrange(len(data)):
print '%02X' % ord(data),
# 发送数据
snddata = '';
snddata += chr(98)
tt = 0x12345678;
snddata = pack('i', tt)
snddata += chr(0x64)
self.l_serial.write(tt);
# 判断结束
if len(data) > 0 and ord(data)==0x45:
#pass;
break;
except Exception, ex:
print str(ex);
self.waitEnd.set();
self.alive = False;
def stop(self):
self.alive = False;
self.thread_read.join();
if self.l_serial.isOpen():
self.l_serial.close();
#测试用部分
if __name__ == '__main__':
rt = ComThread();
try:
if rt.start():
rt.waiting();
rt.stop();
else:
pass;
except Exception,se:
print str(se);
if rt.alive:
rt.stop();
print ''; 兄台也用python啊，问题解决了吗？我才学python，可以一起学习交流：Q 395938211
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