USB communication Arduino Pro Micro / Leonardo and Android

philofthejungle

Hey,

does someone have experiences with connecting an Arduino Pro Micro or Leonardo to an Android phone over USB ?

Found this https://github.com/mik3y/usb-serial-for-android https://groups.google.com/forum/#!topic/usb-serial-for-android/8-fLuUn2Yns

and this https://github.com/inventit/processing-android-serial.

But I have no idea how I would use the AndroidLib in Processing(AndroidMode) and the second method simply doesnt work for me.

thanks, cheers !

philofthejungle

I was trying now to understand the android API myself http://developer.android.com/guide/topics/connectivity/usb/host.html

But quickly ran into this error: The method SystemService(String) is undefined for the type usbcom

import android.hardware.usb.*;
import android.content.Context;
import android.view.MotionEvent;
import ketai.ui.*;
import java.util.Map;


KetaiGesture gesture;
UsbManager manager;


void setup()
{
  orientation(LANDSCAPE);
  gesture = new KetaiGesture(this);
  manager = (UsbManager)SystemService(Context.USB_SERVICE);
  HashMap<String, UsbDevice> deviceList = manager.getDeviceList();

}

this seems to be a solution:

http://stackoverflow.com/questions/18990728/android-getsystemservicecontext-usb-service-error

but I dont know how to apply it in processing.

philofthejungle

I got it all working without any external library. if someone is interested I can share the code.

benja

Yes sure, it would be great if you share your solution.

philofthejungle

ups, now heres the code. everything should be in - but i didnt check if it compiles.

I also had to remove the HDI interface from the pro micro. should be easy to find how to do that. cheers !

import android.hardware.usb.*;
import android.content.Intent;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window.*;
import android.view.WindowManager;
import android.view.*;
import java.util.*;
import java.lang.Object;
import android.app.PendingIntent;
import android.content.IntentFilter;
import android.content.BroadcastReceiver;
import android.util.Log;
import android.content.res.AssetFileDescriptor;
import android.content.Context;
import android.app.Activity;



UsbManager manager;
UsbManager mUsbManager;
PendingIntent mPermissionIntent;
UsbDevice device;

UsbInterface intf;
UsbDeviceConnection connection;
UsbEndpoint endpoint;
UsbEndpoint endpointin;


//USB
final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";
HashMap<String, UsbDevice> deviceList;
boolean sender = false;
boolean receiver = false;
int sendern =100;
byte[] bytes = new byte[]{5};
byte[] reply = new byte[]{0}; 
int TIMEOUT = 1000;
private boolean forceClaim = true;

setup(){


  manager = (UsbManager) getActivity().getSystemService(Context.USB_SERVICE);
  mUsbManager = (UsbManager)  getActivity().getSystemService(Context.USB_SERVICE);
  deviceList = manager.getDeviceList();

  connect();
  connect2();


}



 void connect(){

     manager = (UsbManager) getActivity().getSystemService(Context.USB_SERVICE);
     deviceList = manager.getDeviceList();
     for (String keydevicename : deviceList.keySet()) {
       device = deviceList.get(keydevicename);
     }
     mUsbManager.requestPermission(device, mPermissionIntent);
 }



  void connect2(){

    intf = device.getInterface(1);
    endpoint = intf.getEndpoint(0);
    endpointin = intf.getEndpoint(1);
    connection = mUsbManager.openDevice(device); 
    connection.claimInterface(intf, forceClaim);
    connection.controlTransfer(0x21, 0x22, 0x1, 0, null, 0, 0);
    receiver = true;
 }





 void sending(){  

    if(sender == true){

    new Thread(new Runnable() {
    public void run() {
     connection.bulkTransfer(endpoint, bytes, bytes.length, TIMEOUT);
       sender = false;

    }
  }).start();
  }} 



 void reading(){  

        if(receiver == true){

    new Thread(new Runnable() {
    public void run() {
    connection.bulkTransfer(endpointin, reply, reply.length, TIMEOUT);

    }
  }).start();
  }} 




private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {

    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (ACTION_USB_PERMISSION.equals(action)) {
            synchronized (this) {
                UsbDevice device = (UsbDevice)intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);

                if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
                    if(device != null){
                      //call method to set up device communication
                   }
                } 
                else {
                    //Log.d(TAG, "permission denied for device " + device);
                }
            }
        }
    }
};


 @Override
public void onCreate(Bundle savedInstanceState)
{

  super.onCreate(savedInstanceState);
  getActivity().getSystemService(Context.USB_SERVICE);
  final String ACTION_USB_PERMISSION =
    "com.android.example.USB_PERMISSION";

  mPermissionIntent = PendingIntent.getBroadcast(getActivity(), 0, new Intent(ACTION_USB_PERMISSION), 0);
  IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
  getActivity().registerReceiver(mUsbReceiver, filter);



}

maxnnovik

setup(){ ??? And which IDE?