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BLE iBeacon demonstrating how to change the payload data every second
Dependencies: BLE_API mbed nRF51822
Fork of BLE_iBeacon by
main.cpp
- Committer:
- Rohit Grover
- Date:
- 2014-06-10
- Revision:
- 32:7b7093b653a8
- Parent:
- 31:93e50a3c3dc6
- Child:
- 37:205deeded79d
File content as of revision 32:7b7093b653a8:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed.h" #include "BLEDevice.h" BLEDevice ble; #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console; * it will have an impact on code-size and power consumption. */ #if NEED_CONSOLE_OUTPUT Serial pc(USBTX, USBRX); #define DEBUG(...) { pc.printf(__VA_ARGS__); } #else #define DEBUG(...) /* nothing */ #endif /* #if NEED_CONSOLE_OUTPUT */ /* * For this demo application, populate the beacon advertisement payload * with 2 AD structures: FLAG and MSD (manufacturer specific data). * * Reference: * Bluetooth Core Specification 4.0 (Vol. 3), Part C, Section 11, 18 */ /* * The Beacon payload (encapsulated within the MSD advertising data structure) * has the following composition: * 128-Bit UUID = E2 0A 39 F4 73 F5 4B C4 A1 2F 17 D1 AD 07 A9 61 * Major/Minor = 0000 / 0000 * Tx Power = C8 */ const static uint8_t beaconPayload[] = { 0x4C, 0x00, // Company identifier code (0x004C == Apple) 0x02, // ID 0x15, // length of the remaining payload 0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, // location UUID 0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61, 0x00, 0x00, // the major value to differentiate a location 0x00, 0x00, // the minor value to differentiate a location 0xC8 // 2's complement of the Tx power (-56dB) }; int main(void) { DEBUG("Initialising BTLE transport\n\r"); ble.init(); ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED); ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, beaconPayload, sizeof(beaconPayload)); ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED); ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */ ble.startAdvertising(); for (;;) { ble.waitForEvent(); } // An alternative to the above: // // DigitalOut mainloopLED(LED1); // for (;;) { // mainloopLED = !mainloopLED; // wait(1); // } }