Bert Kruger / Mbed 2 deprecated BLE_Beacon_Payload_Refresh

BLE iBeacon demonstrating how to change the payload data every second

Dependencies:   BLE_API mbed nRF51822

Fork of BLE_iBeacon by Bluetooth Low Energy

main.cpp@7:e2bfd5db6713, 2014-05-20 (annotated)

Committer:
rohit.grover
Date:
Tue May 20 18:04:33 2014 +0100
Revision:
7:e2bfd5db6713
Parent:
6:26eab6ee6df4
Child:
8:d851d92601b7
better documentation to explain the structure of the beacon advertising 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"
ktownsend 0:7613d21e5974 18 #include "nRF51822n.h"
ktownsend 0:7613d21e5974 19
ktownsend 0:7613d21e5974 20 nRF51822n nrf; /* BLE radio driver */
ktownsend 0:7613d21e5974 21
ktownsend 0:7613d21e5974 22 DigitalOut led1(LED1);
ktownsend 0:7613d21e5974 23 DigitalOut led2(LED2);
ktownsend 0:7613d21e5974 24 Ticker flipper;
ktownsend 0:7613d21e5974 25 Serial pc(USBTX,USBRX);
ktownsend 0:7613d21e5974 26
ktownsend 0:7613d21e5974 27 void tickerCallback(void);
ktownsend 0:7613d21e5974 28
ktownsend 0:7613d21e5974 29 /**************************************************************************/
ktownsend 0:7613d21e5974 30 /*!
ktownsend 0:7613d21e5974 31 @brief Program entry point
ktownsend 0:7613d21e5974 32 */
ktownsend 0:7613d21e5974 33 /**************************************************************************/
ktownsend 0:7613d21e5974 34 int main(void)
ktownsend 0:7613d21e5974 35 {
ktownsend 0:7613d21e5974 36 *(uint32_t *)0x40000504 = 0xC007FFDF;
ktownsend 0:7613d21e5974 37 *(uint32_t *)0x40006C18 = 0x00008000;
ktownsend 0:7613d21e5974 38
ktownsend 0:7613d21e5974 39 /* Setup blinky: led1 is toggled in main, led2 is toggled via Ticker */
rohit.grover 6:26eab6ee6df4 40 led1 = 1;
rohit.grover 6:26eab6ee6df4 41 led2 = 1;
ktownsend 0:7613d21e5974 42 flipper.attach(&tickerCallback, 1.0);
ktownsend 0:7613d21e5974 43
ktownsend 0:7613d21e5974 44 /* Initialise the nRF51822 */
ktownsend 0:7613d21e5974 45 pc.printf("Initialising the nRF51822\n\r");
ktownsend 0:7613d21e5974 46 nrf.init();
rohit.grover 6:26eab6ee6df4 47
rohit.grover 5:97ce285ff00a 48 GapAdvertisingParams advParams (
rohit.grover 5:97ce285ff00a 49 GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED );
ktownsend 0:7613d21e5974 50 GapAdvertisingData advData;
ktownsend 0:7613d21e5974 51 GapAdvertisingData scanResponse;
ktownsend 0:7613d21e5974 52
rohit.grover 7:e2bfd5db6713 53 /*
rohit.grover 7:e2bfd5db6713 54 * For this demo application, populate the beacon advertisement payload
rohit.grover 7:e2bfd5db6713 55 * with 2 AD structures: FLAG and MSD
rohit.grover 7:e2bfd5db6713 56 *
rohit.grover 7:e2bfd5db6713 57 * Reference:
rohit.grover 7:e2bfd5db6713 58 * Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 11, 18
rohit.grover 7:e2bfd5db6713 59 */
rohit.grover 7:e2bfd5db6713 60
rohit.grover 7:e2bfd5db6713 61 /* Define an Beacon payload.
rohit.grover 7:e2bfd5db6713 62
rohit.grover 7:e2bfd5db6713 63 This is the data part of the MSD AdvertisingData structure to be added to
rohit.grover 7:e2bfd5db6713 64 the advertising payload.
ktownsend 0:7613d21e5974 65 --------------------------------------------------------------
ktownsend 0:7613d21e5974 66 128-Bit UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61
ktownsend 0:7613d21e5974 67 Major/Minor = 0000 / 0000
ktownsend 0:7613d21e5974 68 Tx Power = C8
ktownsend 0:7613d21e5974 69 */
rohit.grover 7:e2bfd5db6713 70 uint8_t beaconPayload[] = {
rohit.grover 7:e2bfd5db6713 71 0x4C, 0x00, // Company identifier code (0x004C == Apple)
rohit.grover 7:e2bfd5db6713 72 0x02, // ID
rohit.grover 7:e2bfd5db6713 73 0x15, // length of the remaining payload
rohit.grover 7:e2bfd5db6713 74 0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, // UUID
rohit.grover 7:e2bfd5db6713 75 0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61,
rohit.grover 7:e2bfd5db6713 76 0x00, 0x00, // the major value to differenciate a location
rohit.grover 7:e2bfd5db6713 77 0x00, 0x00, // the minor value to differenciate a location
rohit.grover 7:e2bfd5db6713 78 0xC8 // 2's complement of the Tx power (-56dB)
rohit.grover 7:e2bfd5db6713 79 };
ktownsend 0:7613d21e5974 80
ktownsend 0:7613d21e5974 81 /* Make sure we get a clean start */
ktownsend 0:7613d21e5974 82 nrf.reset();
ktownsend 0:7613d21e5974 83
ktownsend 0:7613d21e5974 84 advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED);
rohit.grover 5:97ce285ff00a 85 advData.addData(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA,
rohit.grover 5:97ce285ff00a 86 beaconPayload,
rohit.grover 5:97ce285ff00a 87 sizeof(beaconPayload));
ktownsend 0:7613d21e5974 88
ktownsend 0:7613d21e5974 89 /* Start advertising! */
ktownsend 0:7613d21e5974 90 nrf.getGap().setAdvertisingData(advData, scanResponse);
ktownsend 0:7613d21e5974 91 nrf.getGap().startAdvertising(advParams);
ktownsend 0:7613d21e5974 92
ktownsend 0:7613d21e5974 93 /* Do blinky on LED1 while we're waiting for BLE events */
rohit.grover 5:97ce285ff00a 94 for (;; ) {
rohit.grover 6:26eab6ee6df4 95 led1 = !led1;
rohit.grover 6:26eab6ee6df4 96 wait(1);
ktownsend 0:7613d21e5974 97 }
ktownsend 0:7613d21e5974 98 }
ktownsend 0:7613d21e5974 99
ktownsend 0:7613d21e5974 100 /**************************************************************************/
ktownsend 0:7613d21e5974 101 /*!
ktownsend 0:7613d21e5974 102 @brief Ticker callback to switch led2 state
ktownsend 0:7613d21e5974 103 */
ktownsend 0:7613d21e5974 104 /**************************************************************************/
ktownsend 0:7613d21e5974 105 void tickerCallback(void)
ktownsend 0:7613d21e5974 106 {
ktownsend 0:7613d21e5974 107 led2 = !led2;
ktownsend 0:7613d21e5974 108 }