【免费】基于python实现串口GUI编程源码资源-CSDN文库

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需积分: 0 6 浏览量 2023-12-13 17:11:42 上传评论收藏 2KB RAR 举报

在IT行业中，Python是一种广泛应用的编程语言，以其简洁明了的语法和强大的库支持而闻名。在本主题中，我们关注的是"基于Python实现串口GUI编程源码"，这通常指的是利用Python来创建一个图形用户界面（GUI），用于与硬件设备通过串行端口进行通信。下面将详细介绍这一领域的相关知识点。 Python中的串口通信通常依赖于第三方库，如`pyserial`。`pyserial`库提供了一系列API，允许开发者在Python程序中方便地打开、配置和读写串口。例如，我们可以使用`Serial()`函数初始化串口，`open()`方法打开串口，`write()`方法发送数据，以及`read()`或`readline()`方法接收数据。 ```python import serial # 初始化串口 ser = serial.Serial('COM1', 9600) # COM1是串口名，9600是波特率 # 发送数据 ser.write(b'Hello, Serial!') # 发送字节数据 # 接收数据 received_data = ser.readline().decode('utf-8') print(received_data) ``` 接下来，构建GUI（图形用户界面）是另一个关键点。Python提供了多种库来实现这一目标，如Tkinter（Python的标准GUI库）、PyQt、wxPython等。在这个案例中，我们可能会使用Tkinter，因为它简单易用且内置在Python标准库中。下面是一个简单的Tkinter GUI应用，用于显示串口通信的输入和输出： ```python import tkinter as tk from tkinter import messagebox from threading import Thread import serial class SerialApp: def __init__(self, root): self.root = root self.serial = serial.Serial('COM1', 9600) # 创建控件 self.entry = tk.Entry(root) self.send_button = tk.Button(root, text="发送", command=self.send_data) self.text_area = tk.Text(root, wrap='word', width=40, height=20) self.text_area.config(state='disabled') # 布局 self.entry.pack() self.send_button.pack() self.text_area.pack() def send_data(self): data = self.entry.get() self.serial.write(data.encode()) self.text_area.config(state='normal') self.text_area.insert(tk.END, f"发送：{data}\n") self.text_area.yview(tk.END) self.text_area.config(state='disabled') def update_data(self): while True: if self.serial.in_waiting > 0: received = self.serial.read_all().decode() self.text_area.config(state='normal') self.text_area.insert(tk.END, f"接收：{received}\n") self.text_area.yview(tk.END) self.text_area.config(state='disabled') self.root.update_idletasks() if __name__ == "__main__": root = tk.Tk() app = SerialApp(root) receive_thread = Thread(target=app.update_data) receive_thread.start() root.mainloop() ``` 上述代码创建了一个简单的GUI窗口，包含一个文本输入框、一个发送按钮和一个文本区域。当用户在输入框中输入数据并点击发送按钮时，数据会被发送到串口，并在文本区域中记录发送的内容。同时，后台线程会持续检查串口是否有新的接收数据，并将其显示在文本区域中。通过这样的串口GUI应用程序，开发者可以更直观地监控和控制通过串口通信的设备，这对于调试和测试硬件设备非常有用。在实际项目中，可能还需要添加更多的功能，比如错误处理、波特率选择、设备选择等功能，以满足不同的需求。在提供的压缩包文件中，`main.py`很可能是实现这个串口GUI应用程序的源代码。如果要深入理解其工作原理，可以打开并分析该文件，了解各个函数和类的定义以及它们如何协同工作来实现串口通信和GUI交互。通过学习和理解这段代码，你可以掌握如何结合Python的串口通信和GUI编程，为自己的项目开发类似的工具。

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com_test.rar （1个子文件）

main.py 5KB

# This is a sample Python script. # Press Shift+F10 to execute it or replace it with your code. # Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings. import serial import threading import time from tkinter import * from tkinter.ttk import * from tkinter import messagebox def open_serial(a,b,c,d,e): global ser print("串口号:",a) print("波特率:",int(b)) print("数据位:",c) print("停止位:",d) print("检验位:",e) bytesize = serial.EIGHTBITS if c == '7': bytesize = serial.SEVENBITS print("select SEVENBITS") if c == '6': bytesize = serial.SIXBITS print("select SIXBITS") if c == '5': bytesize = serial.FIVEBITS print("select FIVEBITS") stopbitsize = serial.STOPBITS_ONE if d == '2': stopbitsize = serial.STOPBITS_TWO print("select STOPBITS_TWO") paritysel = serial.PARITY_NONE if e == 'Odd': paritysel = serial.PARITY_ODD print("select Odd") if e == 'Even': paritysel = serial.PARITY_EVEN print("select EVEN") ser=serial.Serial(port=a,baudrate=int(b),bytesize=bytesize,stopbits=stopbitsize,parity=paritysel,timeout=0.5) # ser = serial.Serial('COM4', 9600, timeout=1) def print_hi(name): # Use a breakpoint in the code line below to debug your script. print(f'Hi, {name}') # Press Ctrl+F8 to toggle the breakpoint. def print_log(log): time_start = time.time() date = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()) print(f'{date}-{log}') def recv_hander(): while 1: if ser.is_open: data = ser.read(1024).decode('gbk') print_log(data) msgshow.insert(END, data) def create_recv_thread(): global th th = threading.Thread(target=recv_hander) th.setDaemon(True) th.start() def msg_send(): msg = msginp.get() print_log(f'send==>{msg}') if ser.is_open: ser.write(msg.encode('gbk')) def open_com(): print_log("open com") com_val = comnum.get() baud_val = baud.get() # 获取当前选定项目的值 databit_val = databit.get() stopbit_var = stopbit.get() parity_var = parity.get() print(com_val) print(baud_val) open_serial(com_val, baud_val, databit_val, stopbit_var, parity_var) if ser.is_open: messagebox.showinfo("标题","串口打开成功") create_recv_thread() def close_com(): print_log("close com") if ser.is_open: ser.close() # Press the green button in the gutter to run the script. if __name__ == '__main__': print_hi('PyCharm') root = Tk() root.geometry('768x512') root.title('串口工具') comnumvar = StringVar() baudvar = StringVar() databitvar = StringVar() stopbitvar = StringVar() parityvar = StringVar() lb_com = Label(root, text='串口号') lb_com.place(relx=0.01, rely=0.05, relwidth=0.1, relheight=0.1) comnum = Combobox(root, textvariable=comnumvar, values=['COM1', 'COM2', 'COM3', 'COM4', ]) comnum.place(relx=0.08, rely=0.075, relwidth=0.1) comnum.current(3) lb_baud = Label(root, text='波特率') lb_baud.place(relx=0.01, rely=0.12, relwidth=0.1, relheight=0.1) #add 0.045 baud = Combobox(root, textvariable=baudvar, values=['115200', '38400', '9600', '4800', ]) baud.place(relx=0.08, rely=0.145, relwidth=0.1) #add 0.025 baud.current(2) lb_databit = Label(root, text='数据位') lb_databit.place(relx=0.01, rely=0.19, relwidth=0.1, relheight=0.1) #add 0.045 databit = Combobox(root, textvariable=databitvar, values=['8', '7', '6', '5', ]) databit.place(relx=0.08, rely=0.215, relwidth=0.1) #add 0.025 databit.current(0) lb_stopbit = Label(root, text='停止位') lb_stopbit.place(relx=0.01, rely=0.26, relwidth=0.1, relheight=0.1) stopbit = Combobox(root, textvariable=stopbitvar, values=['1', '2', ]) stopbit.place(relx=0.08, rely=0.285, relwidth=0.1) stopbit.current(0) lb_parity = Label(root, text='校验位') lb_parity.place(relx=0.01, rely=0.33, relwidth=0.1, relheight=0.1) parity = Combobox(root, textvariable=parityvar, values=['None','Odd','Even',]) parity.place(relx=0.08, rely=0.355, relwidth=0.1) parity.current(0) btnopen = Button(root, text='打开串口', command=open_com) btnopen.place(relx=0.01, rely=0.45, relwidth=0.1, relheight=0.05) btnclose = Button(root, text='关闭串口', command=close_com) btnclose.place(relx=0.12, rely=0.45, relwidth=0.1, relheight=0.05) lb1 = Label(root, text='串口数据接收') lb1.place(relx=0.25, rely=0.05, relwidth=0.7, relheight=0.1) msgshow = Text(root) msgshow.place(relx=0.25, rely=0.15, relwidth=0.7, relheight=0.3) lb2 = Label(root, text='串口数据发送') lb2.place(relx=0.25, rely=0.45, relwidth=0.7, relheight=0.1) msginp = Entry(root) msginp.place(relx=0.25, rely=0.55, relwidth=0.7, relheight=0.1) btnsend = Button(root, text='发送', command=msg_send) btnsend.place(relx=0.35, rely=0.86, relwidth=0.3, relheight=0.1) root.mainloop() # See PyCharm help at https://www.jetbrains.com/help/pycharm/

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