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

Committer:
ktownsend
Date:
2014-04-02
Revision:
2:90b493cdcb1f
Parent:
0:7613d21e5974
Child:
4:0ce8d2dd62f9

File content as of revision 2:90b493cdcb1f:

/* 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 "nRF51822n.h"

nRF51822n   nrf;                /* BLE radio driver */

DigitalOut  led1(LED1);
DigitalOut  led2(LED2);
Ticker      flipper;
Serial      pc(USBTX,USBRX);

void tickerCallback(void);

/**************************************************************************/
/*!
    @brief  Program entry point
*/
/**************************************************************************/
int main(void)
{
    *(uint32_t *)0x40000504 = 0xC007FFDF;
    *(uint32_t *)0x40006C18 = 0x00008000;
    
    /* Setup blinky: led1 is toggled in main, led2 is toggled via Ticker */
    led1=1;
    led2=1;
    flipper.attach(&tickerCallback, 1.0);

    /* Initialise the nRF51822 */
    pc.printf("Initialising the nRF51822\n\r");
    nrf.init();
    
    GapAdvertisingParams advParams ( GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED );
    GapAdvertisingData   advData;
    GapAdvertisingData   scanResponse;

    /* Define an Beacon payload
       --------------------------------------------------------------
       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
    */
    uint8_t iBeaconPayload[25] = { 0x4C, 0x00, 0x02, 0x15, 0xE2, 0x0A, 0x39, 0xF4, 0x73, 0xF5, 0x4B, 0xC4, 0xA1, 0x2F, 0x17, 0xD1, 0xAD, 0x07, 0xA9, 0x61, 0x00, 0x00, 0x00, 0x00, 0xC8 };

    /* Make sure we get a clean start */
    nrf.reset();

    /* Beacon includes the FLAG and MSD fields */
    advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED);
    advData.addData(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, iBeaconPayload, sizeof(iBeaconPayload));

    /* Start advertising! */
    nrf.getGap().setAdvertisingData(advData, scanResponse);
    nrf.getGap().startAdvertising(advParams);

    /* Do blinky on LED1 while we're waiting for BLE events */
    for (;;)
    {
      led1 = !led1;
      wait(1);
    }
}

/**************************************************************************/
/*!
    @brief  Ticker callback to switch led2 state
*/
/**************************************************************************/
void tickerCallback(void)
{
    led2 = !led2;
}