Android Things, from mobile apps to physical world - Stefano Sanna - Giovanni Di Gialluca - Codemotion Rome 2018
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The document provides an overview of Android Things, detailing its evolution, architecture, and project setup, along with supported hardware options and firmware management. It highlights the similarities between Android and Android Things, focusing on development tools, APIs, and integration with IoT devices. Additionally, it touches on utilizing machine learning with TensorFlow in conjunction with Android Things and various supported projects and libraries.
Android Things, from mobile apps to physical world - Stefano Sanna - Giovanni Di Gialluca - Codemotion Rome 2018
- 1. Android Things, from mobile apps to physical world Stefano Sanna ROME - APRIL 13/14 2018 Giovanni Di Gialluca
- 2. OUTLINE • Android State Of The Nation and (quick) history • Android Things in one slide • Hardware and software: board and firmware • Environment: who’s in, who’s out • Hello Android Things! • Setup of a project • Overview of Android Things API • Merging Mobile & IoT • Vision and greetings
- 3. overview
- 4. Android: State of the Nation
- 5. Fall 2007: Android is announced!
- 6. Fall 2008: T-Mobile G1 lands in the US
- 7. 2010: Honeycomb on Motorola Xoom
- 8. 2014: Android Wear and Android TV
- 10. 2016: Android Things (DP)
- 11. Android Things in one slide Physical World Cloud
- 12. Well-known stack
- 13. Environment • Same architecture • Same IDE (Android Studio) • Same programming languages • Same framework • Same app (Activity) lifecycle • Same UI widgets (UI?) • Same application packaging • Same reliable security for apps and firmware upgrade • Same passionate community
- 14. Android vs Android Things: IN & OUT Cast Drive Firebase Analytics Firebase Cloud Messaging Firebase Realtime Database Firebase Remote Config Firebase Storage Fit Instance ID Location Nearby Places Mobile Vision CalendarContract ContactsContract DocumentsContract DownloadManager MediaStore Settings Telephony UserDictionary VoicemailContract AdMob Android Pay Firebase Authentication, Links, Invites… Maps Play Games Search Sign-In
- 15. SOM: Fast Prototyping to production
- 16. Supported board NXP Pico i.MX7D NXP Pico i.MX6UL Raspberry Pi3 Model B PRICE $64 $43 $22 SDK PRICE $79 $69 $22 CPU 1 GHz dual-core ARM 500Mhz ARM 1.2GHz quad-core ARM RAM 512MB 512MB 1GB STORAGE 4GB eMMC 4GB eMMC microSD GPU NO NO Videocore CAMERA CSI-2 NO CSI-2 AUDIO Analog Analog USB 2.0 + Analog NET Ethernet, WiFi ac, BT 4.1 Ethernet, WiFi n, BT 4.1 Ethernet, WiFi n, BT 4.1 USB USB 2.0 HOST + 2x OTG 2x USB 2.0 OTG 4x USB 2.0 HOST GPIO 7x UART, 4x I2C, 4x SPI, 2x CAN, misc GPIO 8x UART, 4x I2C, 4x SPI, misc 48 GPIO 2x UART, 2x I2C, 2x SPI, up to 26 GPIO
- 17. Raspberry Pi3 Model B • Damn cheap! • Good performances. • Ethernet + WiFi • HDMI + Camera • Lot of extension boards and kits: AI+VR+IoT! • You’ll never brick it: different configurations can be tested just swapping the SD. No eMMC. • Warning: no ADB via USB, a network is strictly required
- 18. firmware
- 19. Console: Models
- 21. Console: Build (AT version)
- 22. Console: Build (AT version)
- 23. Device updates An UpdateManager utility class provides a easy way for the Android Things board to check if there is a new update
- 24. Device updates Using the Console, you can easily create new product releases based on new Android Things versions or new app versions or both and push them to devices already deployed
- 25. hello_things
- 26. Hello_things app/module build.gradle dependencies { … compileOnly 'com.google.android.things:androidthings:+' } AndroidManifest.xml <uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO" /> <application> <uses-library android:name="com.google.android.things" /> <activity android:name=".MainActivity"> <intent-filter> <!-- Main & Launcher for Android Studio --> </intent-filter> <!-- Launch activity automatically on boot --> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.IOT_LAUNCHER" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> </application>
- 27. public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); PeripheralManager service = PeripheralManager.getInstance(); Log.d("GPIO", service.getGpioList().toString()); Gpio mLedGpio = service.openGpio("BCM26"); mLedGpio.setDirection(Gpio.DIRECTION_OUT_INITIALLY_LOW); new Thread(new Runnable() { public void run() { for (int i = 0; i < 10; i++) { try { mLedGpio.setValue(i % 2 == 0); Thread.sleep(250); } catch (Exception e) {/*uh!uh!*/} } } }).start(); } } Hello_things Anode (longer pin) 330 Ohm
- 29. Things Support Library GPIO PWM I2C SPI I2S Single-PIN analog/digital I/O Serial UART Pulse-Width-Modulation to control servo Slow serial bus for sensors Fast serial bus for boards interconnection Point-to-Point serial port Serial bus for audio streaming
- 30. Driver Library From Hardware specs to interface • By Google https://github.com/androidthings/contrib-drivers • By Intel https://github.com/intel-iot-devkit/android-things-samples • By us https://github.com/giovannidg/androidthingsdrivers https://github.com/gerdavax/BrickPi3_AndroidThings
- 31. Change settings programmatically • ScreenManager • Brightness, • Orientation • TimeManager • Time format • Time zone • Time auto update • DeviceManager • Factory reset • Set system locales • Reboot adb shell reboot –p unplug the power cord is not polite
- 32. User Driver INPUT SENSOR GPS User Driver AUDIO Open Source GPIO PWM I2C SPI I2S Serial UART Peripheral Driver Library
- 35. Mobile public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { ...... } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { boolean managed = MyKeyCodes.manageKeyCode(keyCode); if (managed) return true; return super.onKeyDown(keyCode, event); } }
- 36. keycodelib public class MyKeyCodes { public static final int VOLUME_UP_KEY = KeyEvent.KEYCODE_VOLUME_UP; /** * @param keyCode * @return true if the event was managed */ public static boolean manageKeyCode(int keyCode) { if (keyCode == VOLUME_UP_KEY) { Log.d("KEY_LOG", “Ring the bell"); return true; // indicate we handled the event } return false; } }
- 37. Things @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); try { mInputDriver = new ButtonInputDriver("BCM4", Button.LogicState.PRESSED_WHEN_LOW, MyKeyCodes.VOLUME_UP_KEY// the keycode to send ); mInputDriver.register(); } catch (IOException e) { } // error configuring button... } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { boolean managed = MyKeyCodes.manageKeyCode(keyCode); if (managed) return true; return super.onKeyDown(keyCode, event); }
- 38. to infinity and beyond
- 39. Tensor Flow OpenSource library for Machine Learning § Developed by Google, Available For every OS § a computational graph is a series of tensorflow operation (nodes), each EDGE is a multidimensional data called Tensor § Public neural network pre-trained with one million of images, or you can train your neural Network with a provided pythOn library § Neural network model for image recognition called “Inception“ with 1000 categories
- 40. BrikPi + Tensorflow § SPI to control motors and sensors § TensorFlow for object recognition
- 41. BrikPi Raspberry Pi3 extension module with: § 4 Mindstorms NXT/EV3 Motor ports § 4 Mindstorms NXT/EV3 Sensor ports § Extra I2C sensor bus § SPI interface to Raspberry Pi3 § Uniform request/response binary protocol § Seamless power management (internal, external, both)
- 42. Video please!
- 43. Android Things Giovanni Di Gialluca [email protected] https://github.com/giovannidg www.linkedin.com/in/giovanni-di-gialluca Stefano «gerdavax» Sanna [email protected] @gerdavax https://www.linkedin.com/in/gerdavax
- 44. Grazie :-