nRF51822 BLE UART message control

[Kyu]

Hi I'm an undergrade student in dongguk Univ. in South Korea.

I want to control the sending message and receiving message.

I use the android studio.

What do I do ?

Please tell me about that .

I use the Android-BLE-UART source code in GitHub/Nordic.

I think

• Sending message part-

        	EditText editText = (EditText) findViewById(R.id.sendText);
        	String message = editText.getText().toString();
        	byte[] value;
    		try {
    			//send data to service
    			value = message.getBytes("UTF-8");
    			mService.writeRXCharacteristic(value);
    			//Update the log with time stamp
    			String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
    			listAdapter.add("["+currentDateTimeString+"] TX: "+ message);
           	 	messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
           	 	edtMessage.setText("");
    		} catch (UnsupportedEncodingException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
  
        }
    });
  

• Receiving message part-

  if (action.equals(UartService.ACTION_DATA_AVAILABLE)) { // final byte[] tx = intent.getByteArrayExtra(UartService.EXTRA_DATA);

           final  byte[] txValue = intent.getByteArrayExtra(UartService.EXTRA_DATA);
  
  
            runOnUiThread(new Runnable() {
                 public void run() {
  
                     try {
                       String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
                         String text = new String(txValue,"UTF-8");
                                	 	listAdapter.add("["+currentDateTimeString+"] : RX "+ text);
                    	 	messageListView.smoothScrollToPosition(listAdapter.getCount() - 1);
                     } catch (Exception e) {
                         Log.e(TAG, e.toString());
                     }
                 }
             });
  

I think that change this two part to control sending message and receiving message.

How to control the sending message and receiving message?

Please, Please, Please tell me about that.

I really want to answer this as fast as possible.

[run_ar]

Not sure I completely understand your question. But notifications are enabled using the enableTXNotification function in the UartService. e.g. mService.enableTXNotification in MainActivity. This is how you get data. i.e. by enabling notifications so the peripheral can send data to you.

Looks like you have identified the send part, e.g. mService.writeRXCharacteristic(value);

There is also a function for reading a value, readCharacteristic.