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BLE 06: Configuring a connection

This example configures the parameters involved when connecting to a slave. It performs a device scan and if detected, it connects to the BLE module with the selected paramenters.

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_06] - Configuring a connection -------------------
*
* Explanation: This example configures the parameters involved when
* connecting to a slave. It performs a device scan and if detected,
* it connects to the BLE module with the selected parameters.
*
* 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 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 .
*
* Version: 1.0
* Design: David Gascón
* Implementation: Javier Siscart
*/
#include <WaspBLE.h>
// Auxiliary variable
uint8_t aux = 0;
// MAC address of BLE device to find
char MAC[14] = "0007804aa902";
// Now define connection parameters
const uint16_t interval_minimum = 80; // 100 ms
const uint16_t interval_maximum = 80; // 100 ms
const uint16_t timeout = 100; // 10 s
const uint16_t latency = 5; // skip 5 intervals
void setup()
{
USB.println(F("BLE_06 Example"));
// 0. Turn BLE module ON
BLE.ON(SOCKET0);
}
void loop()
{
// 1. Look for a specific device
USB.println(F("First scan for device"));
USB.print("Look for device: ");
USB.println(MAC);
if (BLE.scanDevice(MAC) == 1)
{
//2. now try to connect with the defined parameters.
USB.println(F("Device found. Connecting... "));
char buffer[50] = "interval=%d, timeout=%d, latency=%d\r\n";
USB.printf(buffer, interval_minimum, timeout, latency);
aux = BLE.connectDirect(MAC, interval_minimum, interval_maximum, timeout, latency);
if (aux == 1)
{
USB.print("Connected. connection_handle: ");
USB.println(BLE.connection_handle, DEC);
delay(1000);
// 3. get RSSI of the link
USB.print("RSSI:");
USB.println(BLE.getRSSI(BLE.connection_handle), DEC);
delay(1000);
// 4. disconnect
BLE.disconnect(BLE.connection_handle);
if (BLE.errorCode != 0)
{
USB.println(F("disconnect fail"));
}
else
{
USB.println(F("Disconnected."));
}
}
else
{
USB.println(F("NOT Connected"));
}
}
else
{
USB.println(F("Device not found: "));
}
USB.println();
delay(5000);
}

Output

H#
BLE_06 Example
First scan for device
Look for device:000780789EBF
Device found. Connecting...
interval=80, timeout=100, latency=5
Connected. connection_handle: 0;
RSSI:-75
Disconected.
First scan for device
Look for device:000780789EBF
Device found. Connecting...
interval=80, timeout=100, latency=5
Connected. connection_handle: 0;
RSSI:-77
Disconected.
Last modified 2yr ago