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.
- This example can be executed in Waspmote v12 and Waspmote v15

Code

/*  
 *  --------------- [BT PRO_10] - Creating a transparent connection -------- 
 *  
 *  Explanation: Create a transparent link with a remote Bluetooth module.
 *      
 *  Copyright (C) 2016 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:		1.1
 *  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()
{

  USB.println(F("BT_PRO_10 Example"));

  // 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 conencted"));
    }
  }
  else 
  {
    USB.println(F("Device not found"));
  }

  USB.println();

}

Output

H#
BT_PRO_10 Example
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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