BLE 03: Limited scan

This example shows how to make a limited scan with Bluetooth low energy, till find two devices, printing them by USB

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

Code

/*
 *  ------------------ [BLE_03] - Limited scan ------------------- 
 *
 *  Explanation: This example shows how to make a limited scan with 
 *  Bluetooth low energy, till find two devices, printing them by USB 
 *  
 *
 *  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 .
 *
 *  Version:		1.0
 *  Design:			David Gascón
 *  Implementation:	Javier Siscart
 */
 
#include <WaspBLE.h>

// Auxiliary variable
uint8_t aux = 0;

void setup() 
{  
  USB.println("BLE_03 Example");  

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

void loop() 
{

  // 1. Limited scan
  USB.println(F("Scan till find 2 devices."));
  BLE.scanNetworkLimited(2);

  // 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();

  // 2. Limited scan at desired TX power
  USB.println(F("Scan till find 2 devices at MAX power"));
  BLE.scanNetworkLimited(2, TX_POWER_MAX);

  // 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

H#
BLE_03 Example
Scan till find 2 devices.
discovered: 2
Print Last inquiry saved on EEPROM
Scan params: GAP mode=2; scan_interval=75: scan_window=50; scan_duplicate_filtering=1; TXPower=15;
Device 0; 000780789ebf; RSSI:-39; Name:
Device 1; 00078053c1b9; RSSI:-39; Name:
devices printed:2

Scan till find 2 devices at MAX power
discovered: 2
Print Last inquiry saved on EEPROM
Scan params: GAP mode=2; scan_interval=75: scan_window=50; scan_duplicate_filtering=1; TXPower=15;
Device 0; 000780789ebf; RSSI:-39; Name:
Device 1; 00078053c1b9; RSSI:-39; Name:
devices printed:2