main program for communication usb serial

[alfakr]

hallo @felHR85 , first of all thank you for your usb serial library, i would ask about main program for simple read and write via usb serial with using your library, (Im using Prolific usb-to-serial PL2303) I newby on developing android so its hard enough for me to start writing code,, this is a code I write, and yes there is an error when I click button, its force closed, hope you have a little time for helping me, Thanks

package com.android.testcomserial;

import android.app.Activity; import android.hardware.usb.UsbDevice; import android.hardware.usb.UsbDeviceConnection; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.Toast;

import com.felhr.usbserial.PL2303SerialDevice; import com.felhr.usbserial.UsbSerialInterface;

public class MainActivity extends Activity {

//UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
private static UsbDevice device;
private static UsbDeviceConnection usbConnection;
private final PL2303SerialDevice pl2303 = new PL2303SerialDevice(device, usbConnection); 

Button buttonWrite;

    @Override
    protected void onPause() {
        super.onPause();
        if (pl2303 != null) {
            try {
                pl2303.close();
            } catch (Exception e) {
                Log.e("LOG", e.toString());
            }
        }
        finish();
    }

 @Override
 protected void onResume() {
        super.onResume();
        if (pl2303 == null) {
            Toast.makeText(getApplicationContext(), "No serial device.", Toast.LENGTH_LONG).show();
        } else {
            try {
                pl2303.open();
                pl2303.setBaudRate(115200);
                pl2303.setDataBits(UsbSerialInterface.DATA_BITS_8);
                pl2303.setParity(UsbSerialInterface.PARITY_NONE);
            } catch (Exception e) {
                Log.e("Error setting up device: ", e.toString());
                //pl2303.close();
            }
        }       
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    buttonWrite = (Button)findViewById(R.id.buttonWrite);
    buttonWrite.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            pl2303.write("DATA FROM ANDROID".getBytes());

        }
    });

}

 private UsbSerialInterface.UsbReadCallback mCallback = new UsbSerialInterface.UsbReadCallback() {

    @Override
    public void onReceivedData(byte[] arg0) 
    {
        // Code here :) // what should I write here??
        Toast.makeText(getApplicationContext(), "new data receive", Toast.LENGTH_LONG).show();
    }
 };

}

[felHR85]

I am going to keep open this sometime. But it does not look a library's problem just a problem with your Android code. I sent you some advices by email.

[alfakr]

@felHR85 , yes the problem is not on your code but on me, btw really big thanks for your help, i was reveiced your email and I will try that,,, I will inform you asap

[alfakr]

oke, thanks for your helping,, :)

Dani

On Fri, Jan 30, 2015 at 4:28 PM, Felipe Herranz notifications@github.com wrote:

Closed #3 https://github.com/felHR85/UsbSerial/issues/3.

Reply to this email directly or view it on GitHub https://github.com/felHR85/UsbSerial/issues/3#event-227409545.