友善之臂Mini6410之Android开发学习笔记（2）-PWM Demo

旧城等待， 2022-06-14 11:09 177阅读 0赞

友善之臂Mini6410之Android开发学习笔记源码同步更新，请使用git工具进行同步。关于Git工具更多信息，请参考：[http://progit.org/book/zh/][http_progit.org_book_zh]

git clone https://code.google.com/p/androiddemoformini6410/

PWMActivity.java

package com.mini6410.PWM;
    
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.text.Editable;
    import android.text.TextWatcher;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.CompoundButton;
    import android.widget.EditText;
    import android.widget.ToggleButton;
    
    import com.friendlyarm.AndroidSDK.HardwareControler;
    import com.mini6410.R;
    
    /**
     * 
     * ClassName:PWMActivity
     * Reason:	 PWM Demo
     *
     * @author   snowdream
     * @version  
     * @since    Ver 1.1
     * @Date	 2011	2012-03-11		17:21
     *
     * @see 	 
     */
    public class PWMActivity extends Activity implements Button.OnClickListener,ToggleButton.OnCheckedChangeListener{
    	public static final String TAG = "PWMActivity";
    
    	/*PWM频率*/
    	public static final int PWM_FREQUENCY_1 = 1;
    	public static final int PWM_FREQUENCY_100 = 100;
    	public static final int PWM_FREQUENCY_200 = 200;
    	public static final int PWM_FREQUENCY_500 = 500;
    	public static final int PWM_FREQUENCY_1000 = 1000;
    	public static final int PWM_FREQUENCY_2000 = 2000;
    	public static final int PWM_FREQUENCY_5000 = 5000;
    	public static final int PWM_FREQUENCY_10000 = 10000;
    
    	/*PWM播放时长*/
    	public static final int PWM_PLAY_PERIOD_FOR_EVER = -1;
    	public static final int PWM_PLAY_PERIOD_100 = 100;
    	public static final int PWM_PLAY_PERIOD_200 = 200;
    	public static final int PWM_PLAY_PERIOD_300 = 300;
    	public static final int PWM_PLAY_PERIOD_500 = 500;
    	public static final int PWM_PLAY_PERIOD_1000 = 1000;
    
    	/*PWM播放间隔*/
    	public static final int PWM_WAIT_PERIOD_100 = 100;
    	public static final int PWM_WAIT_PERIOD_200 = 200;
    	public static final int PWM_WAIT_PERIOD_300 = 300;
    	public static final int PWM_WAIT_PERIOD_500 = 500;
    	public static final int PWM_WAIT_PERIOD_1000 = 1000;
    
    
    	/*播放频率*/
    	public int mfrequency = PWM_FREQUENCY_1000;
    	
    	/*频率改变步长Step*/
    	public int mfrequencystep = 100;
    	
    	/*播放时长*/
    	public int mplayperiod = PWM_PLAY_PERIOD_1000;
    	
    	/*播放间隔*/
    	public int mwaitperiod = PWM_WAIT_PERIOD_1000;
    	
    	/*播放次数*/
    	public int mplaynum = 20;
    
    	private boolean mStop = false;
    
    	private Button mButtonSub = null;
    	private Button mButtonAdd = null;
    
    	private ToggleButton mToggleButtonStartForEver= null;
    	private ToggleButton mToggleButtonStartForTimes = null;
    
    	private EditText mEditTextFrequency = null;
    	private EditText mEditTextPlayPeriod = null;
    	private EditText mTextViewWaitPeriod = null;
    	private EditText mEditTextPlayNum = null;
    
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.pwmdemo);
    
    		initUI();
    		initData();
    
    	}
    
    	@Override
    	protected void onDestroy() {
    		mStop = true;
    		super.onDestroy();
    	}
    
    	/**
    	 * 
    	 * initUI: 初始化UI
    	 *
    	 * @param   
    	 * @return     
    	 * @throws 
    	 */
    	public void initUI(){
    		mButtonSub = (Button)findViewById(R.id.ButtonSUB);
    		mButtonAdd = (Button)findViewById(R.id.ButtonADD);
    
    		/*按钮监听器，具体实现参考下面的函数：onClick*/
    		mButtonSub.setOnClickListener(this);
    		mButtonAdd.setOnClickListener(this);
    
    		mToggleButtonStartForEver= (ToggleButton)findViewById(R.id.ToggleButtonStartForEver);
    		mToggleButtonStartForTimes = (ToggleButton)findViewById(R.id.ToggleButtonStartForTimes);
    
    		/*开关按钮监听器，具体实现参考下面的函数：onCheckedChanged*/
    		mToggleButtonStartForEver.setOnCheckedChangeListener(this);
    		mToggleButtonStartForTimes.setOnCheckedChangeListener(this);
    
    		mEditTextFrequency = (EditText)findViewById(R.id.EditTextFrequency);
    		mEditTextPlayPeriod = (EditText)findViewById(R.id.EditTextPlayPeriod);
    		mTextViewWaitPeriod = (EditText)findViewById(R.id.EditTextWaitPeriod);
    		mEditTextPlayNum = (EditText)findViewById(R.id.EditTextPlayNum);
    
    		/*EditText监听器，具体实现参考下面的函数：onTextChanged
    		 * 主要用于获取更改后最新的数值，下同。
    		 * */
    		mEditTextFrequency.addTextChangedListener(new TextWatcher() {
    
    			public void onTextChanged(CharSequence s, int start, int before, int count) {
    				// TODO Auto-generated method stub
    				try {
    					mfrequency = Integer.parseInt(mEditTextFrequency.getText().toString());
    				} catch (NumberFormatException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				}
    			}
    
    			public void beforeTextChanged(CharSequence s, int start, int count,
    					int after) {
    				// TODO Auto-generated method stub
    
    			}
    
    			public void afterTextChanged(Editable s) {
    				// TODO Auto-generated method stub
    
    			}
    		});
    
    		mEditTextPlayPeriod.addTextChangedListener(new TextWatcher() {
    
    			public void onTextChanged(CharSequence s, int start, int before, int count) {
    				// TODO Auto-generated method stub
    				try {
    					mplayperiod = Integer.parseInt(mEditTextPlayPeriod.getText().toString());
    				} catch (NumberFormatException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				}
    			}
    
    			public void beforeTextChanged(CharSequence s, int start, int count,
    					int after) {
    				// TODO Auto-generated method stub
    
    			}
    
    			public void afterTextChanged(Editable s) {
    				// TODO Auto-generated method stub
    
    			}
    		});
    
    		mTextViewWaitPeriod.addTextChangedListener(new TextWatcher() {
    
    			public void onTextChanged(CharSequence s, int start, int before, int count) {
    				// TODO Auto-generated method stub
    				try {
    					mwaitperiod = Integer.parseInt(mTextViewWaitPeriod.getText().toString());
    				} catch (NumberFormatException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				}
    			}
    
    			public void beforeTextChanged(CharSequence s, int start, int count,
    					int after) {
    				// TODO Auto-generated method stub
    
    			}
    
    			public void afterTextChanged(Editable s) {
    				// TODO Auto-generated method stub
    
    			}
    		});
    
    		mEditTextPlayNum.addTextChangedListener(new TextWatcher() {
    
    			public void onTextChanged(CharSequence s, int start, int before, int count) {
    				// TODO Auto-generated method stub
    				try {
    					mplaynum = Integer.parseInt(mEditTextPlayNum.getText().toString());
    				} catch (NumberFormatException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				}
    			}
    
    			public void beforeTextChanged(CharSequence s, int start, int count,
    					int after) {
    				// TODO Auto-generated method stub
    
    			}
    
    			public void afterTextChanged(Editable s) {
    				// TODO Auto-generated method stub
    
    			}
    		});
    
    
    	}
    
    	/**
    	 * 
    	 * initData: 初始化各个控件的数值
    	 *
    	 * @param   
    	 * @return     
    	 * @throws 
    	 */
    	public void initData(){
    		mEditTextFrequency.setText(String.valueOf(mfrequency));
    		mEditTextPlayPeriod.setText(String.valueOf(mplayperiod));
    		mTextViewWaitPeriod.setText(String.valueOf(mwaitperiod));
    		mEditTextPlayNum.setText(String.valueOf(mplaynum));
    	}
    
    
    	/**
    	 * 
    	 * onCheckedChanged: 开关按钮监听器。当有开关按钮的状态改变时，响应点击。
    	 *
    	 * @param   buttonView 改变状态的开关按钮对象；
    	 * @param   isChecked  该开关按钮是否被选中；
    	 * @return     
    	 * @throws 
    	 */
    	public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
    		ToggleButton mToggleButton = (ToggleButton)buttonView;
    
    		switch (mToggleButton.getId()) {
    		case R.id.ToggleButtonStartForEver:
    			if(isChecked){
    				PWMPlay(mfrequency);
    			}else{
    				mStop = true;
    				PWMStop();
    			}
    			break;
    		case R.id.ToggleButtonStartForTimes:
    			if(isChecked){
    				mStop = false;
    				PWMThread mPWMThread = new PWMThread();
    				mPWMThread.start();
    			}else{
    				mStop = true;
    			}
    			break;		
    		default:
    			break;
    		}
    	}
    
    	/**
    	 * 
    	 * onClick: 按钮监听器。当有按钮被点击时，响应点击。
    	 *
    	 * @param   v 被点击的按钮对象；
    	 * @return     
    	 * @throws 
    	 */
    	public void onClick(View v) {
    		Button mButton = (Button)v;
    
    		switch (mButton.getId()) {
    		case R.id.ButtonSUB:
    			if(mfrequency <= 1)
    				mfrequency = PWM_FREQUENCY_1;
    			else if(mfrequency == PWM_FREQUENCY_100)
    				mfrequency = PWM_FREQUENCY_1;	
    			else
    				mfrequency -= mfrequencystep;
    
    			mEditTextFrequency.setText(String.valueOf(mfrequency));
    			break;
    		case R.id.ButtonADD:
    			if(mfrequency <= 1)
    				mfrequency = PWM_FREQUENCY_100;
    			else
    				mfrequency += mfrequencystep;
    
    			mEditTextFrequency.setText(String.valueOf(mfrequency));
    			break;
    		default:
    			break;
    		}
    	}
    
    	/**
    	 * 
    	 * PWMPlay: 启动蜂鸣器 ，并播放。
    	 *
    	 * @param   frequency 播放频率
    	 * @return  true 表示播放成功；否则，表示播放失败。  
    	 * @throws 
    	 */
    	public boolean PWMPlay(int frequency)
    	{
    		boolean ret  = false;
    		int result = -1;
    
    		result = HardwareControler.PWMPlay(frequency);
    
    		if(result == 0)
    			ret = true;
    		else
    			ret = false;
    
    		return ret;
    	}
    
    	/**
    	 * 
    	 * PWMStop: 停止并关闭蜂鸣器。
    	 *
    	 * @param   
    	 * @return  true 表示停止成功；否则，表示停止失败。  
    	 * @throws 
    	 */
    	public boolean PWMStop(){
    		boolean ret  = false;
    		int result = -1;
    
    		result = HardwareControler.PWMStop();
    
    		if(result == 0)
    			ret = true;
    		else
    			ret = false;
    
    		return ret;		
    	}
    
    	/**
    	 * 
    	 * PWMThread: PWM播放线程
    	 *
    	 * @param   
    	 * @return   
    	 * @throws 
    	 */
    	public class PWMThread extends Thread{
    
    		@Override
    		public void run() {
    			Log.i(TAG, "PWMThread Start");
    
    			for(int i = 0 ; i < mplaynum; i++ )
    			{
    				Log.i(TAG, String.valueOf(i));
    
    				if(mStop)
    				{
    					PWMStop();
    					break;
    				}
    
    				/*启动蜂鸣器，并使用频率 mfrequency 进行播放*/
    				PWMPlay(mfrequency);
    
    				/*等待播放时长 mplayperiod 结束*/
    				try {
    					sleep(mplayperiod);
    				} catch (InterruptedException e) {
    					e.printStackTrace();
    				}
    				
    				/*停止蜂鸣器*/
    				PWMStop();
    
    				if(mStop)
    					break;
    
    				/*等待播放间隔 mwaitperiod 结束*/
    				try {
    					sleep(mwaitperiod);
    				} catch (InterruptedException e) {
    					e.printStackTrace();
    				}				
    
    			}
    			Log.i(TAG, "PWMThread Stop");
    		}
    	}
    }

pwmdemo.xml

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
            <TextView
                android:id="@+id/TextViewFrequency"
                android:layout_width="80dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/frequency" />
    
            <Button
                android:id="@+id/ButtonSUB"
                android:layout_width="40dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/sub" />
    
            <EditText
                android:id="@+id/EditTextFrequency"
                android:layout_width="120dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:inputType="number" />
    
            <Button
                android:id="@+id/ButtonADD"
                android:layout_width="40dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/add" />
        </LinearLayout>
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
            <TextView
                android:id="@+id/TextViewPlayPeriod"
                android:layout_width="80dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/playperiod" />
    
            <EditText
                android:id="@+id/EditTextPlayPeriod"
                android:layout_width="200dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:inputType="number" />
        </LinearLayout>
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
            <TextView
                android:id="@+id/TextViewWaitPeriod"
                android:layout_width="80dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/waitperiod" />
    
            <EditText
                android:id="@+id/EditTextWaitPeriod"
                android:layout_width="200dip"
                android:layout_height="40dip"
                android:layout_gravity="center"
                android:gravity="center"
                android:inputType="number" />
        </LinearLayout>
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
            <TextView
                android:id="@+id/TextViewPlayNum"
                android:layout_width="80dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/playnum" />
    
            <EditText
                android:id="@+id/EditTextPlayNum"
                android:layout_width="200dip"
                android:layout_height="40dip"
                android:layout_gravity="center"
                android:gravity="center"
                android:inputType="number" />
        </LinearLayout>
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
            <TextView
                android:id="@+id/TextViewStartForEver"
                android:layout_width="80dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/playforever" />
    
            <ToggleButton
                android:id="@+id/ToggleButtonStartForEver"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center" />
    
            <LinearLayout
                android:layout_width="10dip"
                android:layout_height="wrap_content"
                android:orientation="horizontal" >
            </LinearLayout>
    
            <TextView
                android:id="@+id/TextViewStartForTimes"
                android:layout_width="80dip"
                android:layout_height="40dip"
                android:gravity="center"
                android:text="@string/playfortimes" />
    
            <ToggleButton
                android:id="@+id/ToggleButtonStartForTimes"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="center" />
        </LinearLayout>
    
    </LinearLayout>

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