Data not complete

[juangdiaz]

Hi,
When my device reads the data coming in from the Arduino the data is coming in chopped, the data im receiving comes in very fast.
Log:
03-20 21:35:18.693 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 1
03-20 21:35:18.699 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 22in, 313
03-20 21:35:18.805 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 9
03-20 21:35:18.818 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 0in, 231c
03-20 21:35:18.917 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 8
03-20 21:35:18.943 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 9in, 229cm
03-20 21:35:19.043 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 8
03-20 21:35:19.044 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 9in, 228cm
03-20 21:35:19.168 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 8
03-20 21:35:19.170 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 9in, 228c
03-20 21:35:19.268 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 8
03-20 21:35:19.273 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 9in, 228cm
03-20 21:35:19.394 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 8
03-20 21:35:19.397 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 9in, 228cm
03-20 21:35:19.492 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 8
03-20 21:35:19.518 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 9in, 228cm

however the data should read:
03-20 21:35:18.693 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 122in, 313cm
03-20 21:35:18.805 30385-30385/com.bluetooth.juandiaz.bluetoothconnectivity D/data:: 90in, 231cm

do you know what could cause this?

also i tried using
simpleBluetooth.setInputStreamType(BluetoothUtility.InputStreamType.BUFFERED);
and
simpleBluetooth.setInputStreamType(BluetoothUtility.InputStreamType.NORMAL);
but is not working

im using an arduino with a proximity sensor

Thanks for the help

[ptsouchlos]

Hello,

Can I see your code both on the Android side as well as the Arduino side?

Thanks

[juangdiaz]

the code is pretty much the same as the sample.
on the arduino side i have to ask my friend for it. since he is the one that did the arduino stuff. but all i know is the baud rate is 9600

[ptsouchlos]

Ok, the baud rate shouldn't be a factor. If you can give me the code I can try to reproduce it on my end.

How is the android code different from the sample? Or is it exactly the same?

[juangdiaz]

Will try to get the Arduino code. or atleast the looping code.

on the android Side is exactly the same the only difference is

...
public void onBluetoothDataReceived(byte[] bytes, String data) {
                //read the data coming in.
                Log.d("data: ", data);
...

[ptsouchlos]

Ok thanks, I actually think I may have found an issue:

In the BluetoothUtility.java class I have the following code in the ConnectedThread class:

public void run() {
            byte[] buffer;  // buffer store for the stream
            int bytes; // bytes returned from read()
            BufferedReader reader;

            if(streamType == InputStreamType.NORMAL) {
                // Keep listening to the InputStream until an exception occurs
                while (true) {
                    try {
                        bytes = mInputStream.available();
                        if(bytes > 0) {
                            buffer = new byte[bytes];
                            // Read from the InputStream
                            bytes = mInputStream.read(buffer);
                            // Send the obtained bytes to the UI activity
                            bluetoothHandler.obtainMessage(BluetoothHandler.MESSAGE_READ, bytes, -1, buffer)
                                    .sendToTarget();
                        }
                    } catch (IOException e) {
                        break;
                    }
                }
            //Buffered reader.
            } else {
                reader = new BufferedReader(new InputStreamReader(mInputStream));
                // Keep listening to the InputStream until an exception occurs
                while (true) {
                    try {
                        if(reader.ready()) {
                            String message = reader.readLine();
                            bluetoothHandler.obtainMessage(BluetoothHandler.MESSAGE_READ, -1, -1, message)
                                    .sendToTarget();
                        }
//                        bytes = mInputStream.available();
//                        if(bytes > 0) {
//                            buffer = new byte[bytes];
//                            // Read from the InputStream
//                            bytes = mInputStream.read(buffer);
//                            // Send the obtained bytes to the UI activity
//                            bluetoothHandler.obtainMessage(BluetoothHandler.MESSAGE_READ, bytes, -1, buffer)
//                                    .sendToTarget();
//                        }
                    } catch (IOException e) {
                        break;
                    }
                }
            }

If you notice, the object sent to the Handler is different depending on the input stream type. Then, in the BluetoothHandler in the SimpleBluetooth class I have this code to read the data:

 private BluetoothHandler mHandler = new BluetoothHandler() {
        @Override
        public void handleMessage(Message message) {
            switch (message.what) {
                case MESSAGE_READ:
                    byte[] readBuf = (byte[]) message.obj;
                    String readMessage = new String(readBuf);
                    if(readBuf != null && readBuf.length > 0) {
                        if(mListener != null)
                            mListener.onBluetoothDataReceived(readBuf, readMessage);
                    }
                    break;
    ...

In the case where you using the InputStreamType.BUFFERED, the handler incorrectly casts the message.obj to byte[] when it is actually a String. This may be causing the issue. I'll try this out something this week and post the results.

If you've forked my project, would it be possible for you to try this fix?

Thanks

[juangdiaz]

Awesome!
Let me fork it this week and try to see if it solves the issue. I will let you know

[ptsouchlos]

Great thanks. If I get a chance after work today I'll give it a try as well.

Thanks

[juangdiaz]

Wow that was fast i was about starts looking into it! but you beat me to it.
Any chance you are going to create a new tag version of it?
so i can test and see if it worked

[ptsouchlos]

I think I may have fixed it in the latest commit. You can try it out with this dependency:

compile 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:f50e73a215'

If it does in fact fix the problem, I'll create a new release.

[ptsouchlos]

I'm re-openning this for now until it's confirmed to be solved.