对Python 简单串口收发GUI界面的实例详解

#encoding=utf-8__author__ = 'freedom' from Tkinter import *from serial import *import ttk class GUI(Frame):  def __init__(self,master):    frame = Frame(master)    frame.pack()    #串口设置相关变量    self.port = 0    self.baudrate = 9600    #串口号提示    self.lab1 = Label(frame,text = 'Serial Number')    self.lab1.grid(row = 0,column = 0,sticky = W)    #串口号选择下拉菜单    self.boxValue = StringVar()    self.boxChoice = ttk.Combobox(frame,textvariable = self.boxValue,state = 'readonly')    self.boxChoice['value'] = ('COM1','COM2','COM3','COM4')    self.boxChoice.current(0)    self.boxChoice.bind('<<ComboboxSelected>>',self.Choice)    self.boxChoice.grid(row = 1,column = 0,sticky = W)    #波特率选择提示    self.lab2 = Label(frame,text = 'Baudrate Set')    self.lab2.grid(row = 2,column = 0,sticky = W)    #波特率选择下拉菜单    self.boxValueBaudrate = IntVar()    self.BaudrateChoice = ttk.Combobox(frame,textvariable = self.boxValueBaudrate,state = 'readonly')    self.BaudrateChoice['value'] = (9600,115200)    self.BaudrateChoice.current(0)    self.BaudrateChoice.bind('<<ComboboxSelected>>',self.ChoiceBaudrate)    self.BaudrateChoice.grid(row = 3,column = 0,sticky = W)    #输出框提示    self.lab3 = Label(frame,text = 'Message Show')    self.lab3.grid(row = 0,column = 1,sticky = W)    #输出框    self.show = Text(frame,width = 40,height = 5,wrap = WORD)    self.show.grid(row = 1,column = 1,rowspan = 4,sticky = W)    #输入框提示    self.lab4 = Label(frame,text = 'Input here,please!')    self.lab4.grid(row = 5,column = 1,sticky = W)    #输入框    self.input = Entry(frame,width = 40)    self.input.grid(row = 6,column = 1,rowspan = 4,sticky = W)    #输入按钮    self.button1 = Button(frame,text = "Input",command = self.Submit)    self.button1.grid(row = 11,column = 1,sticky = E)    #串口开启按钮    self.button2 = Button(frame,text = 'Open Serial',command = self.open)    self.button2.grid(row = 7,column = 0,sticky = W)    #串口关闭按钮    self.button3 = Button(frame,text = 'Close Serial',command = self.close)    self.button3.grid(row = 10,column = 0,sticky = W)    #串口信息提示框    self.showSerial = Text(frame,width = 20,height = 2,wrap = WORD)    self.showSerial.grid(row = 12,column = 0,sticky = W)    #串口初始化配置    self.ser = Serial()    self.ser.setPort(self.port)    #self.ser.setBaudrate(self.baudrate)    #self.ser.open()    #print self.ser.isOpen()    #print self.ser  def Choice(self,event):    context = self.boxValue.get()    list = ["COM1",'COM2','COM3','COM4']    if context in list:      self.port = list.index(context)      self.ser.setPort(self.port)    print self.port  def ChoiceBaudrate(self,event):    self.baudrate = self.boxValueBaudrate.get()    self.ser.setBaudrate(self.baudrate)    print self.baudrate  def Submit(self):    context1 = self.input.get()    n = self.ser.write(context1)    output = self.ser.read(n)    print output    self.show.delete(0.0,END)    self.show.insert(0.0,output)  def open(self):    self.ser.open()    if self.ser.isOpen() == True:      self.showSerial.delete(0.0,END)      self.showSerial.insert(0.0,"Serial has been opend!")  def close(self):    self.ser.close()    if self.ser.isOpen() == False:      self.showSerial.delete(0.0,END)      self.showSerial.insert(0.0,"Serial has been closed!")root = Tk()root.title("Serial GUI")#root.geometry("3000x4000")app = GUI(root)root.mainloop()