Al Williams / Mbed 2 deprecated BLE_Beacon

Simple beacon for nRF51822

Dependencies:   BLE_API mbed nRF51822Copy

Fork of BLE_iBeacon by Bluetooth Low Energy

This is the demo beacon for ARM TechCon 2014.

Based on the original library, this demo reads the onboard switches and temperature sensor and beacons them out as a BLE advertisment.

main.cpp@31:93e50a3c3dc6, 2014-06-10 (annotated)

Committer:
Rohit Grover
Date:
Tue Jun 10 11:54:06 2014 +0100
Revision:
31:93e50a3c3dc6
Parent:
30:746d37d781de
Child:
32:7b7093b653a8
simplifying the BEACON template; add use of waitForEvent() and DEBUG(...)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ktownsend 0:7613d21e5974 1 /* mbed Microcontroller Library
ktownsend 0:7613d21e5974 2 * Copyright (c) 2006-2013 ARM Limited
ktownsend 0:7613d21e5974 3 *
ktownsend 0:7613d21e5974 4 * Licensed under the Apache License, Version 2.0 (the "License");
ktownsend 0:7613d21e5974 5 * you may not use this file except in compliance with the License.
ktownsend 0:7613d21e5974 6 * You may obtain a copy of the License at
ktownsend 0:7613d21e5974 7 *
ktownsend 0:7613d21e5974 8 * http://www.apache.org/licenses/LICENSE-2.0
ktownsend 0:7613d21e5974 9 *
ktownsend 0:7613d21e5974 10 * Unless required by applicable law or agreed to in writing, software
ktownsend 0:7613d21e5974 11 * distributed under the License is distributed on an "AS IS" BASIS,
ktownsend 0:7613d21e5974 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ktownsend 0:7613d21e5974 13 * See the License for the specific language governing permissions and
ktownsend 0:7613d21e5974 14 * limitations under the License.
ktownsend 0:7613d21e5974 15 */
ktownsend 0:7613d21e5974 16
ktownsend 0:7613d21e5974 17 #include "mbed.h"
Rohit Grover 27:8d4f5bda1191 18 #include "BLEPeripheral.h"
ktownsend 0:7613d21e5974 19
Rohit Grover 31:93e50a3c3dc6 20 BLEPeripheral ble;
Rohit Grover 31:93e50a3c3dc6 21
Rohit Grover 31:93e50a3c3dc6 22 #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console;
Rohit Grover 31:93e50a3c3dc6 23 * it will have an impact on code-size and power consumption. */
ktownsend 0:7613d21e5974 24
Rohit Grover 31:93e50a3c3dc6 25 #if NEED_CONSOLE_OUTPUT
Rohit Grover 31:93e50a3c3dc6 26 Serial pc(USBTX, USBRX);
Rohit Grover 31:93e50a3c3dc6 27 #define DEBUG(...) { pc.printf(__VA_ARGS__); }
Rohit Grover 31:93e50a3c3dc6 28 #else
Rohit Grover 31:93e50a3c3dc6 29 #define DEBUG(...) /* nothing */
Rohit Grover 31:93e50a3c3dc6 30 #endif /* #if NEED_CONSOLE_OUTPUT */
ktownsend 0:7613d21e5974 31
Rohit Grover 10:391c1acf4b9d 32 /*
Rohit Grover 10:391c1acf4b9d 33 * For this demo application, populate the beacon advertisement payload
Rohit Grover 15:4e1b36b73213 34 * with 2 AD structures: FLAG and MSD (manufacturer specific data).
Rohit Grover 10:391c1acf4b9d 35 *
Rohit Grover 10:391c1acf4b9d 36 * Reference:
Rohit Grover 10:391c1acf4b9d 37 * Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 11, 18
Rohit Grover 10:391c1acf4b9d 38 */
ktownsend 0:7613d21e5974 39
Rohit Grover 14:dfdf0c8b1c09 40 /*
Rohit Grover 15:4e1b36b73213 41 * The Beacon payload (encapsulated within the MSD advertising data structure)
Rohit Grover 15:4e1b36b73213 42 * has the following composition:
Rohit Grover 10:391c1acf4b9d 43 * 128-Bit UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61
Rohit Grover 10:391c1acf4b9d 44 * Major/Minor = 0000 / 0000
Rohit Grover 10:391c1acf4b9d 45 * Tx Power = C8
Rohit Grover 10:391c1acf4b9d 46 */
Rohit Grover 22:080d9bf2f5c0 47 const static uint8_t beaconPayload[] = {
Rohit Grover 10:391c1acf4b9d 48 0x4C, 0x00, // Company identifier code (0x004C == Apple)
Rohit Grover 10:391c1acf4b9d 49 0x02, // ID
Rohit Grover 10:391c1acf4b9d 50 0x15, // length of the remaining payload
Rohit Grover 31:93e50a3c3dc6 51 0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, // location UUID
Rohit Grover 10:391c1acf4b9d 52 0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61,
Rohit Grover 31:93e50a3c3dc6 53 0x00, 0x00, // the major value to differentiate a location
Rohit Grover 31:93e50a3c3dc6 54 0x00, 0x00, // the minor value to differentiate a location
Rohit Grover 10:391c1acf4b9d 55 0xC8 // 2's complement of the Tx power (-56dB)
Rohit Grover 10:391c1acf4b9d 56 };
Rohit Grover 10:391c1acf4b9d 57
ktownsend 0:7613d21e5974 58 int main(void)
ktownsend 0:7613d21e5974 59 {
Rohit Grover 31:93e50a3c3dc6 60 DEBUG("Initialising BTLE transport\n\r");
Rohit Grover 11:6774f4827024 61 ble.init();
ktownsend 0:7613d21e5974 62
Rohit Grover 23:b66fa312e926 63 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
Rohit Grover 27:8d4f5bda1191 64 ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, beaconPayload, sizeof(beaconPayload));
ktownsend 0:7613d21e5974 65
Rohit Grover 20:5e84b5b253a5 66 ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
Rohit Grover 23:b66fa312e926 67 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
Rohit Grover 19:869d8c7306b4 68 ble.startAdvertising();
ktownsend 0:7613d21e5974 69
Rohit Grover 21:a61af863b273 70 for (;;) {
Rohit Grover 31:93e50a3c3dc6 71 ble.waitForEvent();
ktownsend 0:7613d21e5974 72 }
Rohit Grover 31:93e50a3c3dc6 73
Rohit Grover 31:93e50a3c3dc6 74 // An alternative to the above:
Rohit Grover 31:93e50a3c3dc6 75 //
Rohit Grover 31:93e50a3c3dc6 76 // DigitalOut mainloopLED(LED1);
Rohit Grover 31:93e50a3c3dc6 77 // for (;;) {
Rohit Grover 31:93e50a3c3dc6 78 // mainloopLED = !mainloopLED;
Rohit Grover 31:93e50a3c3dc6 79 // wait(1);
Rohit Grover 31:93e50a3c3dc6 80 // }
Rohit Grover 10:391c1acf4b9d 81 }