JNI基础实验一：调用.so文件--友善之臂Tiny210 android 串口/pwm/ADC/LED
1.TextView 滚动拉动
2.byte 转 Strings
3. Thread
4.Handle
<?xml version="1.0" encoding="UTF-8"?><LinearLayout xmlns:android=" android:orientation="vertical" >
<TextView
android:id="@+id/receiveTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Title" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="@+id/sendSerial"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Send" />
<Button
android:id="@+id/clearButton"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Clear" />
<Button
android:id="@+id/openSerial"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="OPEN" />
<Button
android:id="@+id/closeSerial"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Close" />
</LinearLayout>
<EditText
android:id="@+id/sendEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" >
</EditText>
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/showTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=" "
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
</ScrollView>
</LinearLayout>
package com.friendlyarm.LEDDemo;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.EditText;
import android.widget.Toast;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.text.method.ScrollingMovementMethod;
import android.view.View;
import android.widget.Button;
import java.util.Arrays;
import android.widget.TextView;
import com.friendlyarm.AndroidSDK.HardwareControler;
public class serial extends Activity{
private TextView fdText;
private TextView showText;
private EditText sendEditText;
private Button closeSerial;
private Button sendSerial;
private Button openSerial,clearShow;
private int fd;
protected static final int SHOWDATA = 0x1234;
protected static final int SENDOK = 0x1235;
public Handler mHandler;
private boolean threadDisable=false;
String recdata;
/**
*接收函数
*/
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.serial);
fdText=(TextView) findViewById(R.id.receiveTextView);
showText=(TextView) findViewById(R.id.showTextView);
sendEditText=(EditText) findViewById(R.id.sendEditText);
closeSerial = (Button) findViewById(R.id.closeSerial);
sendSerial = (Button) findViewById(R.id.sendSerial);
openSerial = (Button) findViewById(R.id.openSerial);
clearShow = (Button) findViewById(R.id.clearButton);
closeSerial.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
//TODO Auto-generated method stub
HardwareControler.close(fd);
fdText.setText("关闭串口");
openSerial.setEnabled(true);
threadDisable = true;
}
});
openSerial.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
//TODO Auto-generated method stub
fd=HardwareControler.openSerialPort("/dev/s3c2410_serial3",115200,8,1);
if(fd !=-1)
Toast.makeText(serial.this,"OPEN SUCCESS", Toast.LENGTH_SHORT).show();
else
Toast.makeText(serial.this,"OPEN FAIL```", Toast.LENGTH_SHORT).show();
fdText.setText(Integer.toString(fd));
fdText.setText(fdText.getText() + "打开线程");
openSerial.setEnabled(false);
new Thread(new Runnable() {
@Override
public void run() {
while (!threadDisable) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
int m=HardwareControler.select(fd,0,0);
if(m==1)
{
byte[] buf =new byte[1024];
try {
Thread.sleep(10);
} catch(InterruptedException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
int n = HardwareControler.read(fd, buf, 1024);
String ss = new String(buf,0,n);//将bytes转为 String
Message s = new Message();//定义一个message的变量m
s.what = serial.SHOWDATA;//消息的标记GUINOTIFIER在前面定义的
s.obj =ss; //将要传送的数据传递给 m.obj
serial.this.mHandler.sendMessage(s);//传送消息
}
}
}
}).start();
}
});
/**
* 发送按钮
*/
sendSerial.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v){
SendSerial();
}
});
clearShow.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v){
showText.setText("");
}
});
//创建handler
mHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {//得到Handle的通知了 这个时候你可以做相应的操作
case serial.SHOWDATA://tcp_server是Activity的类名
// receivedata_tv.setText(""); //清空textView
// recv_tv.setText(msg.obj.toString());//设置textView显示内容 每次都清除上次的显示
showText.setMovementMethod(new ScrollingMovementMethod());
showText.append(""+ msg.obj.toString());//设置textView显示内容 下一行接着显示
break;
// case serial.SENDOK:
//.setText("");
}
super.handleMessage(msg);
}
};
}
public void SendSerial(){
HardwareControler.write(fd,sendEditText.getText().toString().getBytes());
sendEditText.setText("");
};
}
package com.friendlyarm.AndroidSDK;
import android.util.Log;
public class HardwareControler
{
/* Serial Port */
static public native int openSerialPort( String devName, long baud, int dataBits, int stopBits );
/* LED */
static public native int setLedState( int ledID, int ledState );
/* PWM */
static public native int PWMPlay(int frequency);
static public native int PWMStop();
/* ADC */
static public native int readADC();
/* I2C */
static public native int openI2CDevice();
static public native int writeByteDataToI2C(int fd, int pos, byte byteData);
static public native int readByteDataFromI2C(int fd, int pos);
/* 通用接口 */
static public native int write(int fd, byte[] data);
static public native int read(int fd, byte[] buf, int len);
static public native int select(int fd, int sec, int usec);
static public native void close(int fd);
static {
try {
System.loadLibrary("friendlyarm-hardware");
} catch (UnsatisfiedLinkError e) {
Log.d("HardwareControler", "libfriendlyarm-hardware library not found!");
}
}
}