在java中获取从Arduino作为uint8发送的浮点数。

import gnu.io.*;
import java.io.*;

public class ArduinoCommunication {
    private SerialPort serialPort;
    private InputStream inputStream;

    public void connect(String portName, int baudRate) throws Exception {
        CommPortIdentifier portIdentifier = CommPortIdentifier.getPortIdentifier(portName);
        if (portIdentifier.isCurrentlyOwned()) {
            System.out.println("Error: Port is currently in use");
        } else {
            CommPort commPort = portIdentifier.open(this.getClass().getName(), 2000);

            if (commPort instanceof SerialPort) {
                serialPort = (SerialPort) commPort;
                serialPort.setSerialPortParams(baudRate, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);

                inputStream = serialPort.getInputStream();
            } else {
                System.out.println("Error: Only serial ports are handled by this example.");
            }
        }
    }

    public float readFloat() throws IOException {
        int byteValue = inputStream.read();
        int unsignedValue = byteValue & 0xFF;
        float floatValue = Float.intBitsToFloat(unsignedValue);
        return floatValue;
    }

    public void disconnect() {
        try {
            if (inputStream != null) {
                inputStream.close();
            }
            if (serialPort != null) {
                serialPort.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        ArduinoCommunication arduinoCommunication = new ArduinoCommunication();
        try {
            arduinoCommunication.connect("COM3", 9600);
            float receivedFloat = arduinoCommunication.readFloat();
            System.out.println("Received float: " + receivedFloat);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            arduinoCommunication.disconnect();
        }
    }
}