title: Arduino-Android: Continuous Data Transfer
body: <p>I have just started Arduino programming a few days ago and now I want to transfer potentiometer reading to a mobile device.  I am using Arduino Leonardo and Bluetooth Mate Silver and the following code to transfer data:</p>
  
  <pre><code>    #include &lt;SoftwareSerial.h&gt;  
  
  int bluetoothTx = 2;  // TX-O pin of bluetooth mate, Arduino D2
  int bluetoothRx = 3;  // RX-I pin of bluetooth mate, Arduino D3
  int val;
  SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);
  
  void setup()
  {
    Serial.begin(9600);  // Begin the serial monitor at 9600bps
    bluetooth.begin(115200);  // The Bluetooth Mate defaults to 115200bps
    bluetooth.print("$");  // Print three times individually
    bluetooth.print("$");
    bluetooth.print("$");  // Enter command mode
    delay(100);  // Short delay, wait for the Mate to send back CMD
    bluetooth.println("U,9600,N");  // Temporarily Change the baudrate to 9600, no parity
    bluetooth.begin(9600);  // Start bluetooth serial at 9600
  }
  
  void loop()
  {
    int val = analogRead(A0);
  
    if(bluetooth.available())  // If the bluetooth sent any characters
    {
      Serial.print(val);  
    }
    if(Serial.available())  // If stuff was typed in the serial monitor
    {
        bluetooth.print(val);
    }
    delay(1000);
    // and loop forever and ever!
  }
  </code></pre>
  
  <p>I found that bluetooth connection estublished without any error, however I am not getting any data on mobile device. I changed the code (e.g., without the if statement/ printing potentiometer data on serial monitor and read the data from serial monitor to the transfer into mobile device), only I get the data in mobile device if I enter any values in serial monitor. I would highly appreciate if anyone could suggest me possible solutions to solve it.</p>