Connect.Tech- Android Development For Arduino 101
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The document is a guide on Android development for Arduino, authored by Bryan Richardson from Stable|Kernel, which focuses on creating interactive projects using Arduino and connecting it with Android devices via USB, Bluetooth, and Network. It provides detailed code examples and communication strategies for sending data between Android and Arduino, as well as hardware setup instructions. Additionally, it outlines the Internet of Things (IoT) concepts and introduces Arduino as an open-source electronics platform for various applications.
![@stablekernel
Send Android Data to Arduino
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
playNote(position);
}
public void playNote(int note_value) {
byte[] bytesOut = new byte[]{ (byte) note_value};
if(arduinoDevice != null) {
usbArduinoConnection.bulkTransfer(endpointOut, bytesOut, 1, 0);
}
}](https://image.slidesharecdn.com/bryanconnecttech-161020210917/85/Connect-Tech-Android-Development-For-Arduino-101-16-320.jpg)
![@stablekernel
Process Android Data on Arduino
int speakerPin = 9;
int tones[] = { 440, 494, 523, 587, 659, 698, 784};
void setup() {
pinMode(speakerPin, OUTPUT);
Serial.begin(9600);
}
void loop() {
if (Serial.available()) {
int incomingByte = Serial.read();
if (incomingByte > -1) {
playNote(incomingByte);
}
}
}
void playNote(int note) {
tone(speakerPin, tones[note], 200);
}](https://image.slidesharecdn.com/bryanconnecttech-161020210917/85/Connect-Tech-Android-Development-For-Arduino-101-17-320.jpg)
![@stablekernel
Send Android Data to Arduino
byte[] bytesOut = new byte[]{ note_value };
try {
btSocket.getOutputStream().write(bytesOut);
} catch (IOException e) {
// handle exception
}](https://image.slidesharecdn.com/bryanconnecttech-161020210917/85/Connect-Tech-Android-Development-For-Arduino-101-22-320.jpg)
![@stablekernel
Send Android Data to Arduino Yun
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
String[] musicalNotes = new String[] { "A","B","C","D","E","F","G"};
ArrayAdapter<String> musicalNotesAdapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, musicalNotes);
notesListView.setOnItemClickListener(this);
notesListView.setAdapter(musicalNotesAdapter);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String note = String.valueOf(position);
HttpClient client = new DefaultHttpClient();
String URL = “http://10.0.0.19/arduino/“ + note;
HttpGet request = new HttpGet(URL);
ResponseHandler<String> responseHandler = new BasicResponseHandler();
client.execute(httpget, responseHandler);
}](https://image.slidesharecdn.com/bryanconnecttech-161020210917/85/Connect-Tech-Android-Development-For-Arduino-101-33-320.jpg)
Connect.Tech- Android Development For Arduino 101
- 1. Android Development For Arduino 101 By: Bryan Jones Richardson Software Engineer stable|kernel [email protected] stablekernel.com
- 2. We’re stable|kernel. stable|kernel is an Atlanta-based mobile development company to craft smartly-designed mobile applications that connect brands directly with their users.
- 3. The Internet of Things? @stablekernel
- 4. @stablekernel The internet of things (IoT) is the network of physical devices, embedded with electronics, software, sensors, actuators, and network connectivity that enable them to collect and exchange data. • Transportation (Street Lights) • Healthcare • Agriculture • Durables & Wearable • Object Oriented World
- 6. @stablekernel Arduino is an open-source electronics platform based on easy-to-use hardware and software. It's intended for anyone making interactive projects. (Basically, a small computer that you can connect to anything). • Uno • Mega • Yun • Minimal Cost Barriers • Raspberry Pi, Edison, etc.
- 11. Android & Arduino via USB @stablekernel
- 12. @stablekernel Android USB Classes • UsbManager • UsbDevice • UsbDeviceConnection • UsbInterface • UsbEndpoint • UsbConstants
- 13. @stablekernel Detect Android USB Connection private final BroadcastReceiver usbConnectionAttachedReceiver = new BroadcastReceiver() { @Override public void onReceive(@NonNull Context context, @NonNull Intent intent) { activeUsbDevice = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE); connectUsb(); } }; private final BroadcastReceiver usbConnectionDetachedReceiver = new BroadcastReceiver() { @Override public void onReceive(@NonNull Context context, @NonNull Intent intent) { UsbDevice detachedDevice = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE); if (detachedDevice == activeUsbDevice) { disconnectUsb(); } } };
- 14. @stablekernel Determine if Arduino is Connected for (int i = 0; i < activeUsbDevice.getInterfaceCount(); i++) { UsbInterface usbInterface = activeUsbDevice.getInterface(i); if (usbInterface.getEndpointCount() == 2) { for (int j = 0; j < endpointCount; j++) { UsbEndpoint endpoint = usbInterface.getEndpoint(j); if (endpoint.getType() != UsbConstants.USB_ENDPOINT_XFER_BULK) { continue; } if (endpoint.getDirection() == UsbConstants.USB_DIR_OUT) { endpointOut = usbInterface.getEndpoint(j); } else if (endpoint.getDirection() == UsbConstants.USB_DIR_IN) { endpointIn = usbInterface.getEndpoint(j); } } } } }
- 15. @stablekernel Establish Communication w/ Arduino private void setupUSBComm() { UsbManager manager = (UsbManager) getActivity().getSystemService(Context.USB_SERVICE); Boolean permitToRead = manager.hasPermission(arduinoDevice); if (permitToRead) { connection = manager.openDevice(arduinoDevice); if (connection != null) { connection.claimInterface(activeUSBInterface, true); //requestType, SET_CONTROL_LINE_STATE, value, index, buffer, length, timeout connection.controlTransfer(RQSID_SET_REQUEST_TYPE, RQSID_SET_CONTROL_LINE_STATE, 0, 0, null, 0, 0); connection.controlTransfer(RQSID_SET_REQUEST_TYPE, RQSID_SET_LINE_CODING, 0, 0, encodingSetting, 7, 0); } } else { manager.requestPermission(arduinoDevice, permissionIntent); } }
- 16. @stablekernel Send Android Data to Arduino @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { playNote(position); } public void playNote(int note_value) { byte[] bytesOut = new byte[]{ (byte) note_value}; if(arduinoDevice != null) { usbArduinoConnection.bulkTransfer(endpointOut, bytesOut, 1, 0); } }
- 17. @stablekernel Process Android Data on Arduino int speakerPin = 9; int tones[] = { 440, 494, 523, 587, 659, 698, 784}; void setup() { pinMode(speakerPin, OUTPUT); Serial.begin(9600); } void loop() { if (Serial.available()) { int incomingByte = Serial.read(); if (incomingByte > -1) { playNote(incomingByte); } } } void playNote(int note) { tone(speakerPin, tones[note], 200); }
- 18. @stablekernel Hardware Setup Ground Pin 9 Piezo BreadBoardUno USB
- 19. Android & Arduino via Bluetooth @stablekernel
- 20. @stablekernel Android Bluetooth Classes <uses-permission android:name = "android.permission.BLUETOOTH_ADMIN"/> <uses-permission android:name = “android.permission.BLUETOOTH”/> private BluetoothAdapter bluetoothAdapter; private BluetoothSocket bluetoothSocket; private Set<BluetoothDevice> pairedBluetoothDevices; static final UUID myUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
- 21. @stablekernel Connect To BlueTooth Device bluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); BluetoothDevice btDevice = bluetoothAdapter.getRemoteDevice(bluetoothAddress); btSocket = btDevice.createInsecureRfcommSocketToServiceRecord(myUUID); BluetoothAdapter.getDefaultAdapter().cancelDiscovery(); btSocket.connect();
- 22. @stablekernel Send Android Data to Arduino byte[] bytesOut = new byte[]{ note_value }; try { btSocket.getOutputStream().write(bytesOut); } catch (IOException e) { // handle exception }
- 24. @stablekernel Debugging on Arduino digitalWrite(ledPin, LOW); digitalWrite(ledPin, HIGH); serialPrint(…);
- 26. Android & Arduino via Network @stablekernel
- 27. @stablekernel Configure Yun For Connectivity
- 28. @stablekernel Configure Yun For Connectivity
- 29. @stablekernel Configure Yun For Connectivity
- 30. @stablekernel Implement Arduino Code #include <Bridge.h> #include <YunServer.h> #include <YunClient.h> YunServer server; ...
- 31. @stablekernel Implement Arduino Code void setup() { ... Bridge.begin(); server.listenOnLocalhost(); server.begin(); }
- 32. @stablekernel Implement Arduino Code void loop() { YunClient client = server.accept(); if (client) { process(client); client.stop(); } delay(50); } void process(YunClient client) { String incomingNote = client.readStringUntil('/'); playNote(incomingNote.toInt()); }
- 33. @stablekernel Send Android Data to Arduino Yun @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); String[] musicalNotes = new String[] { "A","B","C","D","E","F","G"}; ArrayAdapter<String> musicalNotesAdapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, musicalNotes); notesListView.setOnItemClickListener(this); notesListView.setAdapter(musicalNotesAdapter); } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String note = String.valueOf(position); HttpClient client = new DefaultHttpClient(); String URL = “http://10.0.0.19/arduino/“ + note; HttpGet request = new HttpGet(URL); ResponseHandler<String> responseHandler = new BasicResponseHandler(); client.execute(httpget, responseHandler); }
- 36. Questions? Business Inquiries: Sarah Woodward Director of Business Development [email protected] Bryan Jones Richardson Software Engineer [email protected] blog.stablekernel.com