Android串口通信（基于Tiny6410平台）

更多信息请移步：http://xiebaochun.github.io/

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：

 package geekle.lab;

 import android.app.Activity;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.text.method.ScrollingMovementMethod;
 import android.util.Log;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.WindowManager;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;

 import com.friendlyarm.AndroidSDK.HardwareControler;

 public class SerialPortActivity extends Activity
 {
     private static final String[] serial_port={"/dev/s3c2410_serial0","/dev/s3c2410_serial1","/dev/s3c2410_serial2"};
     private static final String[] baud_rate={"4800","9600","19200","115200"};

     TextView chooseserialPortView;
     TextView choosebaudRateView;
     TextView commucationView;
     EditText editmsg;
     private Button stopButton;
     private Button sendButton;
     private Spinner choose_serialport;
     private Spinner choose_baudrate;
     private ArrayAdapter<String> serialportAdapter;
     private ArrayAdapter<String> baudrateAdaptera;

     private int fd = 0;
     String thread = "readThread";
     String choosed_serial = "/dev/s3c2410_serial2";
     int choosed_buad = 19200;
     byte[] buf= new byte[300];

     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);//设置全屏
         chooseserialPortView = (TextView)findViewById(R.id.choose_serialPort_text);
         choose_serialport = (Spinner)findViewById(R.id.choose_seriaPort_spinner);
         chooseserialPortView = (TextView)findViewById(R.id.choose_baudRate_text);
         choose_baudrate = (Spinner)findViewById(R.id.choose_baudRate_spinner);

         serialportAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,serial_port);//建立下拉控件的适配器
         baudrateAdaptera = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,baud_rate);
         serialportAdapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
         baudrateAdaptera.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
         choose_serialport.setAdapter(serialportAdapter);//连接控件和适配器
         choose_baudrate.setAdapter(baudrateAdaptera);
         choose_serialport.setSelection(2);
         choose_baudrate.setSelection(2);

         choose_serialport.setOnItemSelectedListener(new Spinner.OnItemSelectedListener()
         {

             public void onItemSelected(AdapterView<?> arg0, View arg1,
                     int arg2, long arg3) {
                 // TODO Auto-generated method stub
                 choosed_serial = serial_port[arg2];
             }

             public void onNothingSelected(AdapterView<?> arg0) {
                 // TODO Auto-generated method stub

             }

         });

         choose_baudrate.setOnItemSelectedListener(new Spinner.OnItemSelectedListener()
         {

             public void onItemSelected(AdapterView<?> arg0, View arg1,
                     int arg2, long arg3) {
                 // TODO Auto-generated method stub
                 choosed_buad = Integer.parseInt(baud_rate[arg2]);
             }

             public void onNothingSelected(AdapterView<?> arg0) {
                 // TODO Auto-generated method stub

             }

         });
         fd = HardwareControler.openSerialPort(choosed_serial,choosed_buad, 8, 1);//打开串口
         if (fd != -1) {
             Toast.makeText(getApplicationContext(), getResources().getString(R.string.open_serial_success)+choosed_serial, 1).show();
         } else {
             Toast.makeText(this, getResources().getString(R.string.open_fail), 1).show();
         }
         stopButton = (Button)findViewById(R.id.stopButton);
         stopButton.setOnClickListener(new ClickEvent());

         sendButton = (Button)findViewById(R.id.sendButton);//发送消息
         sendButton.setOnClickListener(new OnClickListener() {

             public void onClick(View arg0) {
                 // TODO Auto-generated method stub
                 HardwareControler.write(fd, editmsg.getText().toString().getBytes());
                 commucationView.append(editmsg.getText()+"\n");
             }
         });

         commucationView = (TextView)findViewById(R.id.commucation_window);
         commucationView.setMovementMethod(ScrollingMovementMethod.getInstance()); //让textview实现滚动
         editmsg = (EditText)findViewById(R.id.editmsg);

         new readThread().start();//开始串口的监听线程

     }

     public class ClickEvent implements Button.OnClickListener//退出
     {
         public void onClick(View arg0) {
             // TODO Auto-generated method stub
             android.os.Process.killProcess(android.os.Process.myPid());
             System.exit(0);
         }
     }
     Handler handler = new Handler() {
         public void handleMessage(Message msg) {
             switch (msg.arg1) {
             case 0:
                 int len = HardwareControler.read(fd, buf, 300);
                 String string = new String(buf, 0, len);
                 commucationView.append(string+"\n");
                 new readThread().start();//处理完消息后立即开启监听线程
                 Log.d(thread,"接收到数据，新线程启动");
                 break;
             case 1:
                 HardwareControler.setLedState(1, 0);
                 new readThread().start();
 //                Log.d(thread,"没有数据，新线程启动");
                 break;
             default:
                 break;
             }
         }
     };

     class readThread extends Thread//读取串口信息线程
     {
         public void run()
         {
             Message msg = new Message();
             HardwareControler.setLedState(0, 0);
             if (HardwareControler.select(fd,5, 0)==1) {
                 msg.arg1 = 0;
             }
             else {
                 msg.arg1 =1;
                 HardwareControler.setLedState(0, 1);
             }
             handler.sendMessage(msg);
         }
     }
 }

main.xml代码：

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:orientation="vertical" >

     <TextView
         android:id="@+id/choose_serialPort_text"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="@+string/chooseserialPort" />

     <Spinner
         android:id="@+id/choose_seriaPort_spinner"
         android:layout_width="wrap_content"
         android:layout_height="40dp" >
     </Spinner>

     <TextView
         android:id="@+id/choose_baudRate_text"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@+string/choosebaudRate" />

     <Spinner
         android:id="@+id/choose_baudRate_spinner"
         android:layout_width="wrap_content"
         android:layout_height="40dp" >
     </Spinner>


          <TextView
           android:id="@+id/commucation_window"
           android:layout_width="fill_parent"
           android:layout_height="190dp" >
          </TextView>
     <EditText
         android:id="@+id/editmsg"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:hint="edit here" />

     <LinearLayout
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:layout_weight="1"
         android:orientation="horizontal" >

         <Button
             android:id="@+id/sendButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:text="@+string/send" />

         <Button
             android:id="@+id/stopButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_weight="1"
             android:text="@string/stopButton" />
     </LinearLayout>

 </LinearLayout>