android读写串口

android读写串口(friendlyarm)

import com.friendlyarm.AndroidSDK.HardwareControler;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Looper;

import android.os.Message;

public class MapGuider_Activity extends Activity{

private int serial_fd=0;

private byte[] serial_RevBuf=new byte[100];

private byte[] serial_SendBuf="fsjajd".getBytes();

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.mapguider);

serial_fd=HardwareControler.openSerialPort("/dev/s3c2410_serial1", 115200, 8, 1);

if(serial_fd!=-1)

{

System.out.println("打开串口成功");

HardwareControler.write(serial_fd, serial_SendBuf);

lac_handler.post(RevicePosDataThread);

}

else

{

System.out.println("指定的串口不存在或在其它进程中已被打开");

}

}

@Override

protected void onDestroy() {

// TODO Auto-generated method stub

HardwareControler.close(serial_fd);

System.out.println("关闭串口");

lac_handler.removeCallbacks(RevicePosDataThread);

super.onDestroy();

}

Handler lac_handler =new Handler(){

@Override

public void handleMessage(Message msg) {

// TODO Auto-generated method stub

super.handleMessage(msg);

}

};

Runnable RevicePosDataThread =new Runnable()

{

int err=0;

String s;

public void run() {

// TODO Auto-generated method stub

while(true)

{

//Looper.prepare();

err=HardwareControler.select(serial_fd, 1, 0);

if(err==1)//有数据可读

{

HardwareControler.read(serial_fd, serial_RevBuf, 10);

s=new String(serial_RevBuf);

System.out.println("接收到串口数据"+s);

}

else if(err==0) //无数据可读

{

System.out.println("没有接收到串口数据");

}

else //出错

{

System.out.println("接收到串口数据出错");

}

try {

Thread.sleep(2);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

};

}