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@23:b66fa312e926, 2014-05-23 (annotated)

Committer:
Rohit Grover
Date:
Fri May 23 17:04:34 2014 +0100
Revision:
23:b66fa312e926
Parent:
22:080d9bf2f5c0
Child:
24:9bcd0dbf0f41
using simplified API to accumulate adv payload

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 17:e7748951593e 18 #include "BLEDevice.h"
ktownsend 0:7613d21e5974 19
Rohit Grover 17:e7748951593e 20 BLEDevice ble; /* BLE radio driver */
ktownsend 0:7613d21e5974 21
Rohit Grover 16:3a0aa30e3b12 22 DigitalOut mainloopLED(LED1);
Rohit Grover 16:3a0aa30e3b12 23 DigitalOut tickerLED(LED2);
Rohit Grover 16:3a0aa30e3b12 24 Ticker flipper;
Rohit Grover 16:3a0aa30e3b12 25 Serial pc(USBTX,USBRX);
ktownsend 0:7613d21e5974 26
Rohit Grover 10:391c1acf4b9d 27 /*
Rohit Grover 10:391c1acf4b9d 28 * For this demo application, populate the beacon advertisement payload
Rohit Grover 15:4e1b36b73213 29 * with 2 AD structures: FLAG and MSD (manufacturer specific data).
Rohit Grover 10:391c1acf4b9d 30 *
Rohit Grover 10:391c1acf4b9d 31 * Reference:
Rohit Grover 10:391c1acf4b9d 32 * Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 11, 18
Rohit Grover 10:391c1acf4b9d 33 */
ktownsend 0:7613d21e5974 34
Rohit Grover 14:dfdf0c8b1c09 35 /*
Rohit Grover 15:4e1b36b73213 36 * The Beacon payload (encapsulated within the MSD advertising data structure)
Rohit Grover 15:4e1b36b73213 37 * has the following composition:
Rohit Grover 10:391c1acf4b9d 38 * 128-Bit UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61
Rohit Grover 10:391c1acf4b9d 39 * Major/Minor = 0000 / 0000
Rohit Grover 10:391c1acf4b9d 40 * Tx Power = C8
Rohit Grover 10:391c1acf4b9d 41 */
Rohit Grover 22:080d9bf2f5c0 42 const static uint8_t beaconPayload[] = {
Rohit Grover 10:391c1acf4b9d 43 0x4C, 0x00, // Company identifier code (0x004C == Apple)
Rohit Grover 10:391c1acf4b9d 44 0x02, // ID
Rohit Grover 10:391c1acf4b9d 45 0x15, // length of the remaining payload
Rohit Grover 10:391c1acf4b9d 46 0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, // UUID
Rohit Grover 10:391c1acf4b9d 47 0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61,
Rohit Grover 10:391c1acf4b9d 48 0x00, 0x00, // the major value to differenciate a location
Rohit Grover 10:391c1acf4b9d 49 0x00, 0x00, // the minor value to differenciate a location
Rohit Grover 10:391c1acf4b9d 50 0xC8 // 2's complement of the Tx power (-56dB)
Rohit Grover 10:391c1acf4b9d 51 };
Rohit Grover 10:391c1acf4b9d 52
Rohit Grover 10:391c1acf4b9d 53 static void setupAppHardware(void);
Rohit Grover 10:391c1acf4b9d 54 static void tickerCallback(void);
Rohit Grover 10:391c1acf4b9d 55
ktownsend 0:7613d21e5974 56 int main(void)
ktownsend 0:7613d21e5974 57 {
Rohit Grover 10:391c1acf4b9d 58 setupAppHardware();
ktownsend 0:7613d21e5974 59
Rohit Grover 16:3a0aa30e3b12 60 pc.printf("Initialising BTLE transport\n\r");
Rohit Grover 11:6774f4827024 61 ble.init();
Rohit Grover 11:6774f4827024 62 ble.reset();
ktownsend 0:7613d21e5974 63
Rohit Grover 23:b66fa312e926 64 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
Rohit Grover 23:b66fa312e926 65 ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA,
Rohit Grover 23:b66fa312e926 66 beaconPayload,
Rohit Grover 23:b66fa312e926 67 sizeof(beaconPayload));
ktownsend 0:7613d21e5974 68
Rohit Grover 20:5e84b5b253a5 69 ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
Rohit Grover 23:b66fa312e926 70 ble.setAdvertisingTimeout(0); /* disable timeout. */
Rohit Grover 23:b66fa312e926 71 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
Rohit Grover 19:869d8c7306b4 72 ble.startAdvertising();
ktownsend 0:7613d21e5974 73
Rohit Grover 9:438f44012039 74 /* Do blinky on mainloopLED while we're waiting for BLE events */
Rohit Grover 21:a61af863b273 75 for (;;) {
Rohit Grover 9:438f44012039 76 mainloopLED = !mainloopLED;
rohit.grover 6:26eab6ee6df4 77 wait(1);
ktownsend 0:7613d21e5974 78 }
Rohit Grover 10:391c1acf4b9d 79 }
Rohit Grover 10:391c1acf4b9d 80
Rohit Grover 10:391c1acf4b9d 81 void setupAppHardware(void)
Rohit Grover 10:391c1acf4b9d 82 {
Rohit Grover 10:391c1acf4b9d 83 /* Setup blinkies: mainloopLED is toggled in main, tickerLED is
Rohit Grover 10:391c1acf4b9d 84 * toggled via Ticker */
Rohit Grover 10:391c1acf4b9d 85 mainloopLED = 1;
Rohit Grover 10:391c1acf4b9d 86 tickerLED = 1;
Rohit Grover 10:391c1acf4b9d 87 flipper.attach(&tickerCallback, 1.0);
ktownsend 0:7613d21e5974 88 }
ktownsend 0:7613d21e5974 89
ktownsend 0:7613d21e5974 90 void tickerCallback(void)
ktownsend 0:7613d21e5974 91 {
Rohit Grover 9:438f44012039 92 tickerLED = !tickerLED;
ktownsend 0:7613d21e5974 93 }