LED
GPIO22にLEDブリックを接続し、GPIO1_IO10を指定
1秒ごとにLEDを点滅。
ソース
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64 | import android.app.Activity;
import android.os.Handler;
import android.os.Bundle;
import android.util.Log;
import com.google.android.things.pio.Gpio;
import com.google.android.things.pio.PeripheralManager;
import java.io.IOException;
public class MainActivity extends Activity {
private final static String TAG = "THINGS";
private Gpio mLedGpio;
private String PIN_NAME = "GPIO1_IO10";
private Handler mHandler = new Handler();
private static final int INTERVAL_BETWEEN_BLINKS_MS = 1000;
private Boolean trigger = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
mLedGpio = PeripheralManager.getInstance().openGpio(PIN_NAME);
mLedGpio.setDirection(Gpio.DIRECTION_OUT_INITIALLY_LOW);
mHandler.post(mBlinkRunnable);
} catch (IOException e) {
Log.e(TAG, "Error on PeripheralIO API", e);
}
}
private Runnable mBlinkRunnable = new Runnable() {
@Override
public void run() {
if (mLedGpio == null) {
return;
}
try {
trigger = !trigger;
mLedGpio.setValue(!mLedGpio.getValue());
mHandler.postDelayed(mBlinkRunnable, INTERVAL_BETWEEN_BLINKS_MS);
} catch (IOException e) {
Log.e(TAG, "Error on PeripheralIO API", e);
}
}
};
@Override
protected void onDestroy() {
super.onDestroy();
if (mLedGpio != null) {
try {
mLedGpio.close();
} catch (IOException e) {
Log.e(TAG, "Error on PeripheralIO API", e);
}
}
}
}
|
AndroidManifest.xmlに を追加
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17 | <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.vssadmin.myapplication">
<uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO" />
<application android:label="@string/app_name">
<uses-library android:name="com.google.android.things" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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