python串口工具_使用Python3+PyQT5+Pyserial 实现简单的串口工具方法

下面是使用Python3+PyQT5+Pyserial实现简单的串口工具方法的示例代码：

import sys
import serial
from PyQt5.QtWidgets import QApplication, QMainWindow, QTextEdit, QAction, QFileDialog
from PyQt5.QtCore import QThread, pyqtSignal

class SerialThread(QThread):
    received = pyqtSignal(str)

    def __init__(self, port, baudrate):
        super().__init__()
        self.port = port
        self.baudrate = baudrate
        self.serial = None

    def run(self):
        try:
            self.serial = serial.Serial(self.port, self.baudrate)
            while True:
                data = self.serial.readline().decode("utf-8")
                if data:
                    self.received.emit(data)
        except Exception as e:
            print(e)

    def write(self, data):
        if self.serial:
            self.serial.write(data.encode("utf-8"))

    def close(self):
        if self.serial:
            self.serial.close()

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Serial Tool")
        self.setGeometry(100, 100, 800, 600)

        self.text_edit = QTextEdit(self)
        self.text_edit.setReadOnly(True)
        self.setCentralWidget(self.text_edit)

        open_action = QAction("Open", self)
        open_action.setShortcut("Ctrl+O")
        open_action.triggered.connect(self.open_file)
        self.menuBar().addAction(open_action)

        self.thread = SerialThread("COM1", 115200)
        self.thread.received.connect(self.append_text)
        self.thread.start()

    def append_text(self, text):
        self.text_edit.moveCursor(QtGui.QTextCursor.End)
        self.text_edit.insertPlainText(text)

    def open_file(self):
        file_name, _ = QFileDialog.getOpenFileName(self, "Open File", "", "Text Files (*.txt)")
        if file_name:
            with open(file_name, "r") as f:
                data = f.read()
                self.thread.write(data)

    def closeEvent(self, event):
        self.thread.close()
        event.accept()

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())

这个示例代码实现了一个简单的串口工具，可以实现打开串口、读取串口数据、发送数据等功能。其中SerialThread类用于在后台线程中读取串口数据，MainWindow类用于创建窗口并处理窗口事件。该代码可以根据需要进行修改和扩展。