Grove Button Example Application with GPIO interrupts.

buttonintr/.gitignore

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+/build

buttonintr/README.md

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+Grove Button sample for Android Things using UPM
+-----------------------------------------------
+
+This example demonstrates a GPIO interrupts using UPM.
+
+Pre-Requisites:
+---------------
+Use of the Grove Kit (for Joule or Edison) makes this easy. See the following links for getting
+a starter kit.
+
+*  https://www.seeedstudio.com/Grove-Maker-Kit-for-Intel-Joule-p-2796.html
+*  https://www.seeedstudio.com/Grove-Starter-Kit-V3-p-1855.html
+
+
+You will need:
+
+1. Android Things compatible board.
+2. Grove header or Breakout board.
+3. A Grove push button.
+
+
+Build and install:
+------------------
+
+On Android Studio, select the "buttonintr" module in select box by the "Run" button
+and then click on the "Run" button.
+
+Changing the GPIO pin
+---------------------
+This example uses a GPIO (digital input) to read the state of a button. The GPIO could be connected
+via the shield to a Grove button... or it could be a button or wire on a breakout board directly
+connected between a GPIO line and Vcc.
+
+The GPIO line to be used is specified in the strings.xml file (src/res/values directory).
+
+````
+<resources>
+    <string name="app_name">ButtonIntr</string>
+
+    <string name="Button_Edison_Arduino">IO0</string>
+    <string name="Button_Edison_Sparkfun">GP20</string>
+    <string name="Button_Joule_Tuchuck">J7_64</string>
+</resources>
+````
+
+The code will automatically determine the board type being run on (modify BoardDefaults.java
+in the driver library to add another board) and select a string from this file for the GPIO line.
+The above example uses IO0 on the Edison Arduino shield and J7_64 on the Joule Tuchuck
+development board. These strings are programmed into the Peripheral Manager and read from their
+into the UPM library to determine the GPIO pin to be used.
+
+See the top level README.md for a table describing the available GPIO pins and where to find them
+on the board.

buttonintr/build.gradle

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+/*
+ * Copyright (c) 2017 Intel Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 25
+    buildToolsVersion "25.0.2"
+
+    defaultConfig {
+        applicationId "com.example.upm.androidthings.driversamples"
+        minSdkVersion 24
+        targetSdkVersion 25
+        versionCode 1
+        versionName "1.0"
+
+        jackOptions {
+            enabled true
+        }
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile project(':driversupport')
+    compile 'io.mraa.at.upm:upm_grove:1.+'
+}

buttonintr/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /home/brillo/Android/Sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

buttonintr/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright (c) 2017 Intel Corporation.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.upm.androidthings.driversamples">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true">
+        <activity android:name=".ButtonIntrActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

buttonintr/src/main/java/com/example/upm/androidthings/driversamples/ButtonIntrActivity.java

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+/*
+ * Copyright (c) 2017 Intel Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.upm.androidthings.driversamples;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.util.Log;
+import android.widget.TextView;
+
+import com.example.upm.androidthings.driversupport.BoardDefaults;
+
+import mraa.mraa;
+import mraa.Edge;
+
+public class ButtonIntrActivity extends Activity {
+    private static final String TAG = "ButtonIntrActivity";
+    public static int counter = 0;
+    upm_grove.GroveButton button;
+    TextView tv;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_button_intr);
+
+        tv = (TextView) findViewById(R.id.text_value);
+
+        int gpioIndex = -1;
+        int level = Edge.EDGE_RISING.swigValue();
+        BoardDefaults bd = new BoardDefaults(this.getApplicationContext());
+
+        switch (bd.getBoardVariant()) {
+            case BoardDefaults.DEVICE_EDISON_ARDUINO:
+                gpioIndex = mraa.getGpioLookup(getString(R.string.Button_Edison_Arduino));
+                break;
+            case BoardDefaults.DEVICE_EDISON_SPARKFUN:
+                gpioIndex = mraa.getGpioLookup(getString(R.string.Button_Edison_Sparkfun));
+                break;
+            case BoardDefaults.DEVICE_JOULE_TUCHUCK:
+                gpioIndex = mraa.getGpioLookup(getString(R.string.Button_Joule_Tuchuck));
+                break;
+            default:
+                throw new IllegalStateException("Unknown Board Variant: " + bd.getBoardVariant());
+        }
+
+        button = new upm_grove.GroveButton(gpioIndex);
+        ButtonISR callback = new ButtonISR();
+        button.installISR(level, callback);
+    }
+
+    private void updateUI(int bv) {
+        this.runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                tv.setText(button.name() + " value is " + bv + "        counter       " + counter);
+                Log.i(TAG, "iteration: " + counter++ + ", " + button.name() + " value is " + bv);
+            }
+        });
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+
+        Log.d(TAG, "in onDestroy() call");
+        button.delete();
+    }
+
+    class ButtonISR implements Runnable {
+
+        public void run() {
+            // Moves the current thread into the background
+            android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND);
+
+            try {
+                updateUI(button.value());
+                Thread.sleep(1000);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                button.delete();
+            }
+        }
+    }
+}

buttonintr/src/main/res/layout/activity_button_intr.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingBottom="16dp"
+    android:paddingLeft="64dp"
+    android:paddingRight="16dp"
+    android:paddingTop="16dp"
+    tools:context="com.example.upm.androidthings.driversamples.ButtonIntrActivity">
+
+    <TextView
+        android:id="@+id/text_value"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Hello World!" />
+
+</RelativeLayout>

buttonintr/src/main/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?><!--
+ Copyright (c) 2017 Intel Corporation.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+    <string name="app_name">ButtonIntr</string>
+
+    <string name="Button_Edison_Arduino">IO0</string>
+    <string name="Button_Edison_Sparkfun">GP20</string>
+    <string name="Button_Joule_Tuchuck">J7_64</string>
+</resources>

settings.gradle

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  */
 
 include ':accel_on_lcd'
+include ':buttonintr'
 include ':multisensor'
 include ':ads1015'
 include ':ssd1351'