Development

Communication / Bluetooth Low Energy:

» BLE 05 Configuring a scan

This example shows how to configure scan parameters and makin a scan with them, printing number of discovered devices and scan results stored in EEPROM.

Required Materials

1 x Waspmote
1 x Battery
1 x Bluetooth Low Energy module
1 x Bluetooth module antenna
1 x Expansion board (if socket 1 is used)
1 x SD card

Notes

Socket 0 is used by default
EEPROM is used in this example by default.
Never unplug module while Waspmote is turned ON.
Bluetooth module antenna should be connected.
The battery must be connected in ANY example.

Code

/*
 *  ------------------ [BLE_05] - Configuring a scan ------------------- 
 *
 *  Explanation: This example shows how to configure scan parameters and 
 *  making a scan with them, printing number of discovered devices 
 *  and scan results stored in EEPROM. 
 *
 *  Copyright (C) 2014 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 ARTICULAR 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 <WaspBLE.h>

// Auxiliary variable
uint8_t aux = 0;
void setup() 
{  
  USB.println(F("BLE_05 Example"));  

  // 0. Turn BLE module ON
  BLE.ON(SOCKET0);

  // 1. Configure a scan with desired parameters

  // 1.1 Set TX power to maximum 
  BLE.setTXPower(TX_POWER_MAX); 
  if (BLE.errorCode != 0) USB.println(F("TX Fail"));

  // 1.2 Set GAP Discover mode.
  BLE.setDiscoverMode(BLE_GAP_BROADCAST);
  if (BLE.errorCode != 0) USB.println(F("GAP Fail"));

  // 1.3 set scan interval to 75 and scan window to 50, 
  // and enable active scanning
  BLE.setScanningParameters(75,50,BLE_ACTIVE_SCANNING);
  if (BLE.errorCode != 0) USB.println(F("Active scanning not enabled"));

  // 1.4 enable mac filter
  BLE.setFiltering(BLE_MAC_FILTER_ENABLED);
  if (BLE.errorCode != 0) USB.println(F("Mac filter not enabled"));

}

void loop() 
{

  // 2. Make a scan with desired parameters
  USB.println(F("New scan..."));  
  BLE.scanNetwork(5);
  
  // Printing information
  USB.print("discovered devices: ");
  USB.println(BLE.numberOfDevices, DEC);
  USB.println();

  USB.println(F("Printing Last inquiry saved on EEPROM:"));  
  aux = BLE.printInquiry();
  USB.print("devices printed: ");
  USB.println(aux, DEC);
  USB.println();

}

Output

E#
BLE_05 Example
New scan...
discovered devices: 2

Printing Last inquiry saved on EEPROM:
Scan params: GAP mode=2; scan_interval=75: scan_window=64; scan_duplicate_filtering=1; TXPower=15;
Device 0; 000780789ebf; RSSI:-41; Name:
Device 1; 00078053c1b9; RSSI:-39; Name:
devices printed:2

New scan...
discovered devices: 2

Printing Last inquiry saved on EEPROM:
Scan params: GAP mode=2; scan_interval=75: scan_window=64; scan_duplicate_filtering=1; TXPower=15;
Device 0; 000780789ebf; RSSI:-40; Name:
Device 1; 00078053c1b9; RSSI:-39; Name:
devices printed:2

Quick Publish: