Pax 的 MDB 开发

示例代码

import com.fazecast.jSerialComm.SerialPort;

public class MDBSlave {
    private SerialPort serialPort;
    private static final int ACK = 0x00;
    private static final int NAK = 0xFF;
    private static final int RET = 0xAA;

    public MDBSlave(String portName) {
        serialPort = SerialPort.getCommPort(portName);
        serialPort.setComPortParameters(9600, 8, 1, 0); // 设置波特率、数据位、停止位和校验位
        serialPort.openPort();
    }

    public void listen() {
        byte[] readBuffer = new byte[256];
        while (true) {
            if (serialPort.bytesAvailable() > 0) {
                int numRead = serialPort.readBytes(readBuffer, readBuffer.length);
                parseData(readBuffer, numRead);
            }
        }
    }

    private void parseData(byte[] data, int length) {
        int command = data[0]; // 假设第一个字节是命令字节
        switch (command) {
            case 0x00: // RESET
                handleReset();
                break;
            case 0x01: // SETUP
                handleSetup(data);
                break;
            case 0x02: // POLL
                handlePoll();
                break;
            // 添加其他命令处理...
            default:
                sendNAK();
                break;
        }
    }

    private void handleReset() {
        // 执行复位操作
        sendACK();
    }

    private void handleSetup(byte[] data) {
        // 解析设置数据
        sendACK();
    }

    private void handlePoll() {
        // 响应轮询请求
        sendACK();
    }

    private void sendACK() {
        byte[] response = {ACK};
        serialPort.writeBytes(response, response.length);
    }

    private void sendNAK() {
        byte[] response = {NAK};
        serialPort.writeBytes(response, response.length);
    }

    public static void main(String[] args) {
        MDBSlave mdbSlave = new MDBSlave("COM3"); // 替换为实际的串口
        mdbSlave.listen();
    }
}