接好供电电路后，将电位调到合适位置（手机显示调试模式已连接，并正在充电），然后将实例程序安装至手机，打开实例程序，即可通过手机控制IOIO板子上的引脚，可作为输出，也可作为输入口

安卓 <wbr>使用IOIO控制蜂鸣器发声频率

示例程序的代码：
package ioio.examples.simple;
import ioio.lib.api.AnalogInput;
import ioio.lib.api.DigitalOutput;
import ioio.lib.api.IOIO;
import ioio.lib.api.PwmOutput;
import ioio.lib.api.exception.ConnectionLostException;
import ioio.lib.util.BaseIOIOLooper;
import ioio.lib.util.IOIOLooper;
import ioio.lib.util.android.IOIOActivity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.ToggleButton;
public class IOIOSimpleApp extends IOIOActivity {
private TextView textView_;
private SeekBar seekBar_;
private ToggleButton toggleButton_;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textView_ = (TextView) findViewById(R.id.TextView);
seekBar_ = (SeekBar) findViewById(R.id.SeekBar);
toggleButton_ = (ToggleButton) findViewById(R.id.ToggleButton);
enableUi(false);
}
class Looper extends BaseIOIOLooper {
private AnalogInput input_;
private PwmOutput pwmOutput_;
private DigitalOutput led_;
@Override
public void setup() throws ConnectionLostException {
led_ = ioio_.openDigitalOutput(IOIO.LED_PIN, true);
input_ = ioio_.openAnalogInput(40);
pwmOutput_ = ioio_.openPwmOutput(12, 100);
enableUi(true);
}
@Override
public void loop() throws ConnectionLostException, InterruptedException {
setNumber(input_.read());
pwmOutput_.setPulseWidth(500 + seekBar_.getProgress() * 2);
led_.write(!toggleButton_.isChecked());
Thread.sleep(10);
}
@Override
public void disconnected() {
enableUi(false);
}
}
@Override
protected IOIOLooper createIOIOLooper() {
return new Looper();
}
private void enableUi(final boolean enable) {
runOnUiThread(new Runnable() {
@Override
public void run() {
seekBar_.setEnabled(enable);
toggleButton_.setEnabled(enable);
}
});
}
private void setNumber(float f) {
final String str = String.format("%.2f", f);
runOnUiThread(new Runnable() {
@Override
public void run() {
textView_.setText(str);
}
});
}
}