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友善之臂的Android系统有他们自己编写的一个串口通信程序，网上没有找到他的源代码，而且界面操作不在一个界面，不是很方便，这里我自己写了一个粗糙点的串口通信程序。
同样这里还是调用友善之臂的friendlyarm-hardware.so库文件。
在Android工程文件下面加入com.friendlyarm.androidSDK包，在其下添加HardwareControler.java。下面我把我做的截图发上来。
主程序代码：
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package geekle.lab;
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import android.app.Activity;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.text.method.ScrollingMovementMethod;
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import android.util.Log;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.view.WindowManager;
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import android.widget.AdapterView;
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import android.widget.ArrayAdapter;
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import android.widget.Button;
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import android.widget.EditText;
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import android.widget.Spinner;
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import android.widget.TextView;
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import android.widget.Toast;
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import com.friendlyarm.AndroidSDK.HardwareControler;
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public class SerialPortActivity extends Activity
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{
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private static final String[] serial_port={"/dev/s3c2410_serial0","/dev/s3c2410_serial1","/dev/s3c2410_serial2"};
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private static final String[] baud_rate={"4800","9600","19200","115200"};
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TextView chooseserialPortView;
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TextView choosebaudRateView;
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TextView commucationView;
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EditText editmsg;
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private Button stopButton;
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private Button sendButton;
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private Spinner choose_serialport;
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private Spinner choose_baudrate;
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private ArrayAdapter<String> serialportAdapter;
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private ArrayAdapter<String> baudrateAdaptera;
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private int fd = 0;
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String thread = "readThread";
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String choosed_serial = "/dev/s3c2410_serial2";
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int choosed_buad = 19200;
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byte[] buf= new byte[300];
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState)
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{
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);//设置全屏
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chooseserialPortView = (TextView)findViewById(R.id.choose_serialPort_text);
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choose_serialport = (Spinner)findViewById(R.id.choose_seriaPort_spinner);
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chooseserialPortView = (TextView)findViewById(R.id.choose_baudRate_text);
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choose_baudrate = (Spinner)findViewById(R.id.choose_baudRate_spinner);
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serialportAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,serial_port);//建立下拉控件的适配器
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baudrateAdaptera = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,baud_rate);
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serialportAdapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
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baudrateAdaptera.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
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choose_serialport.setAdapter(serialportAdapter);//连接控件和适配器
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choose_baudrate.setAdapter(baudrateAdaptera);
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choose_serialport.setSelection(2);
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choose_baudrate.setSelection(2);
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choose_serialport.setOnItemSelectedListener(new Spinner.OnItemSelectedListener()
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{
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public void onItemSelected(AdapterView<?> arg0, View arg1,
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int arg2, long arg3) {
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// TODO Auto-generated method stub
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choosed_serial = serial_port[arg2];
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}
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public void onNothingSelected(AdapterView<?> arg0) {
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// TODO Auto-generated method stub
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}
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});
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choose_baudrate.setOnItemSelectedListener(new Spinner.OnItemSelectedListener()
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{
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public void onItemSelected(AdapterView<?> arg0, View arg1,
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int arg2, long arg3) {
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// TODO Auto-generated method stub
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choosed_buad = Integer.parseInt(baud_rate[arg2]);
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}
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public void onNothingSelected(AdapterView<?> arg0) {
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// TODO Auto-generated method stub
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}
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});
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fd = HardwareControler.openSerialPort(choosed_serial,choosed_buad, 8, 1);//打开串口
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if (fd != -1) {
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Toast.makeText(getApplicationContext(), getResources().getString(R.string.open_serial_success)+choosed_serial, 1).show();
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} else {
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Toast.makeText(this, getResources().getString(R.string.open_fail), 1).show();
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}
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stopButton = (Button)findViewById(R.id.stopButton);
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stopButton.setOnClickListener(new ClickEvent());
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sendButton = (Button)findViewById(R.id.sendButton);//发送消息
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sendButton.setOnClickListener(new OnClickListener() {
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public void onClick(View arg0) {
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// TODO Auto-generated method stub
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HardwareControler.write(fd, editmsg.getText().toString().getBytes());
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commucationView.append(editmsg.getText()+"\n");
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}
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});
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commucationView = (TextView)findViewById(R.id.commucation_window);
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commucationView.setMovementMethod(ScrollingMovementMethod.getInstance()); //让textview实现滚动
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editmsg = (EditText)findViewById(R.id.editmsg);
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new readThread().start();//开始串口的监听线程
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}
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public class ClickEvent implements Button.OnClickListener//退出
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{
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public void onClick(View arg0) {
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// TODO Auto-generated method stub
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android.os.Process.killProcess(android.os.Process.myPid());
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System.exit(0);
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}
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}
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Handler handler = new Handler() {
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public void handleMessage(Message msg) {
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switch (msg.arg1) {
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case 0:
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int len = HardwareControler.read(fd, buf, 300);
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String string = new String(buf, 0, len);
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commucationView.append(string+"\n");
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new readThread().start();//处理完消息后立即开启监听线程
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Log.d(thread,"接收到数据，新线程启动");
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break;
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case 1:
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HardwareControler.setLedState(1, 0);
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new readThread().start();
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// Log.d(thread,"没有数据，新线程启动");
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break;
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default:
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break;
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}
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}
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};
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class readThread extends Thread//读取串口信息线程
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{
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public void run()
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{
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Message msg = new Message();
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HardwareControler.setLedState(0, 0);
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if (HardwareControler.select(fd,5, 0)==1) {
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msg.arg1 = 0;
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}
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else {
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msg.arg1 =1;
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HardwareControler.setLedState(0, 1);
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}
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handler.sendMessage(msg);
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}
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}
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}
main.xml代码：
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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:orientation="vertical" >
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<TextView
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android:id="@+id/choose_serialPort_text"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:text="@+string/chooseserialPort" />
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<Spinner
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android:id="@+id/choose_seriaPort_spinner"
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android:layout_width="wrap_content"
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android:layout_height="40dp" >
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</Spinner>
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<TextView
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android:id="@+id/choose_baudRate_text"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@+string/choosebaudRate" />
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<Spinner
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android:id="@+id/choose_baudRate_spinner"
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android:layout_width="wrap_content"
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android:layout_height="40dp" >
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</Spinner>
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<TextView
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android:id="@+id/commucation_window"
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android:layout_width="fill_parent"
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android:layout_height="190dp" >
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</TextView>
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<EditText
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android:id="@+id/editmsg"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:hint="edit here" />
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<LinearLayout
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:layout_weight="1"
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android:orientation="horizontal" >
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<Button
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android:id="@+id/sendButton"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_weight="1"
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android:text="@+string/send" />
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<Button
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android:id="@+id/stopButton"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_weight="1"
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android:text="@string/stopButton" />
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</LinearLayout>
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</LinearLayout>
