Development

Communication / Bluetooth PRO:

» BT Pro 10: Creating a transparent connection

This example shows how to create a transparent connection with other Bluetooth module, getting RSSI of the connection.

Required Materials

1 x Waspmote
1 x Battery
1 x Coin battery
1 x Bluetooth module Pro
1 x Bluetooth module antenna
1 x Expansion board (if socket 1 is used)
1 x SD card

Notes

Do not confuse Bluetooth sleep mode and Waspmote sleep modes.
Socket 1 will be used to connect Bluetooth module (using expansion board)
Socket 0 can also be used, plugging module directly.
It is recommended to set RTC time to your actual time.
SD card must be inserted to allow saving discovered devices.
Never unplug module while Waspmote is turned ON.
Bluetooth module antenna should be connected.
The battery must be connected in ANY example.

Code

/*  
 *  --------------- [BT PRO_10] - Creating a transparent connection -------- 
 *  
 *  Explanation: Create a transparent link with a remote Bluetooth module.
 *      
 *  Copyright (C) 2012 Libelium Comunicaciones Distribuidas S.L. 
 *  http://www.libelium.com 
 *  
 *  This program is free software: you can redistribute it and/or modify 
 *  it under the terms of the GNU General Public License as published by 
 *  the Free Software Foundation, either version 3 of the License, or 
 *  (at your option) any later version. 
 *  
 *  This program is distributed in the hope that it will be useful, 
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 *  GNU General Public License for more details. 
 *  
 *  You should have received a copy of the GNU General Public License 
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>. 
 *  
 *  Version:           0.1 
 *  Design:            David Gascón 
 *  Implementation:    Javier Siscart 
 */

#include "WaspBT_Pro.h"

// Variable to store Mac address of remote Bluetooth module
char mac[18] = "00:07:80:4b:2c:8d";

void setup()
{

  // setup for Serial port over USB
  USB.ON();
  USB.println(F("USB port started...")); 

  // Turn On Bluetooth module
  BT_Pro.ON(SOCKET1);

}

void loop()
{
  // 1. Make an scan for specific device.
  USB.print(F("Scan for device:"));
  USB.println(mac);

  if (BT_Pro.scanDevice(mac,10,TX_POWER_6) == 1)
  {
    // 2. If found, make a transparent conenction.
    USB.println(F("Device found. Now connecting.."));

    if (BT_Pro.createConnection(mac) == 1)
    {
      // 3. Connection success.
      USB.println(F("Connected."));
      
      // 4. Stay connected 10 seconds.
      USB.println(F("Stay connected 10 seconds."));
      for (int i=0; i<10; i++) 
      {
        USB.print(F(".")); 
        delay(1000);
      }

      // 5. Get Link received signal strength indicator (RSSI)
      BT_Pro.getRSSI();     
      USB.print(F("Link RSSI: "));
      USB.println(BT_Pro.linkRSSI);

      // 6. End conneciton
      if (BT_Pro.removeConnection() == 1)
      {
        USB.println(F("Connection removed"));
      }
      else 
      {
        USB.println(F("Not removed"));
      }
    }
    else
    {
      USB.println(F("Not connected"));
    }
  }
  else 
  {
    USB.println(F("Device not found"));
  }

  USB.println();

}

Output

B#USB port started...
Scan for device:00:07:80:4b:2c:8d
Device found. Now connecting..
Connected. Now sending data..
Data sent
Stay connected 10 seconds.
..........Link RSSI: -38
Connection removed

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