import com.fazecast.jSerialComm.SerialPort;

 

import java.nio.charset.StandardCharsets;

 

public class SendAndReceiveFromAllPorts {

    public static void main(String[] args) {

        SerialPort[] ports = SerialPort.getCommPorts();

 

        // 统一的发送指令（16 进制）

        byte[] sendCommand = new byte[]{0xAA, 0xBB, 0xCC};

 

        for (SerialPort port : ports) {

            port.openPort();

            port.setBaudRate(9600);

 

            // 发送指令

            port.writeBytes(sendCommand, sendCommand.length);

 

            // 接收响应

            byte[] receiveBuffer = new byte[1024];

            int numRead = port.readBytes(receiveBuffer, receiveBuffer.length);

            if (numRead > 0) {

                String receivedData = new String(receiveBuffer, 0, numRead, StandardCharsets.UTF_8);

                System.out.println("从端口 " + port.getSystemPortName() + " 接收到的数据: " + receivedData);

            }

 

            port.closePort();

        }

    }

}