1. python 工具
#coding = utf-8
import pty
import os
import select
def mkpty():
master1, slave = pty.openpty()
slaveName1 = os.ttyname(slave)
master2, slave = pty.openpty()
slaveName2 = os.ttyname(slave)
print '\nslave device names: ', slaveName1, slaveName2
return master1, master2
if __name__ == "__main__":
master1, master2 = mkpty()
while True:
rl, wl, el = select.select([master1, master2], [], [], 1)
for master in rl:
data = os.read(master, 128)
print "read %d data." %len(data)
if master == master1:
os.write(master2, data)
else:
os.write(master1, data)
使用方法:
启动:在终端里运行“python mkptych.py&”,这样就可以生成一个基于pty(伪终端)的虚拟端口对,两个设备名会显示在终端里。然后就可以利用这两个设备名在本机上进行虚拟串口之类的调试。
关闭:使用完后用ps查看这个python进程的pid号,然后kill掉即可。
2. Ubuntu下 cutecom 图像界面串口调试工具
(1)终端下载命令:sudo apt-get install cutecom
(2)通过终端打开软件:sudo cutecom (需要root权限,否则无法打开串口)
(3)在 Device 中填写上边生成的虚拟串口号 /dev/pts/24 和 /dev/pts/25, Input 中输入文字 ,点击回车发送测试
3. python 编写测试程序
(1)1.安装pyserial(安装 serial module)
这里区分python2和 python3:
sudo apt install python-pip //python2
sudo apt install python3-pip //python3
(2)然后通过:
pip install pyserial //python2
pip3 install pyserial //python3
(3)测试程序
import serial
from time import sleep
def recv(serial):
while True:
data = serial.read_all()
if data == '':
continue
else:
break
sleep(0.02)
return data
if __name__ == '__main__':
serial = serial.Serial('COM5', 9600, timeout=0.5) #/dev/ttyUSB0
if serial.isOpen() :
print("open success")
else :
print("open failed")
while True:
data =recv(serial)
if data != b'' :
print("receive : ",data)
serial.write(data) #数据写回
Linux公社的RSS地址:https://www.linuxidc.com/rssFeed.aspx