Wang Xinglu / BLE_API

High level Bluetooth Low Energy API and radio abstraction layer

Dependencies:   nRF51822

Dependents:   LinkNode_LIS3DH

Fork of BLE_API by Bluetooth Low Energy

main.cpp@15:327d7329072c, 2013-12-18 (annotated)

Committer:
ktownsend
Date:
Wed Dec 18 12:07:38 2013 +0000
Revision:
15:327d7329072c
Parent:
11:200931be5617
Child:
16:542a9db01350
Cleanup for GAP publication (iBeacon working)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ktownsend 0:ace2e8d3ce79 1 #include "mbed.h"
ktownsend 0:ace2e8d3ce79 2
ktownsend 0:ace2e8d3ce79 3 #include "uuid.h"
ktownsend 2:ffc5216bd2cc 4 #include "GattService.h"
ktownsend 2:ffc5216bd2cc 5 #include "GattCharacteristic.h"
ktownsend 0:ace2e8d3ce79 6 #include "hw/nrf51822.h"
ktownsend 0:ace2e8d3ce79 7
ktownsend 0:ace2e8d3ce79 8 DigitalOut myled ( LED1 );
ktownsend 0:ace2e8d3ce79 9
ktownsend 0:ace2e8d3ce79 10 /* Radio HW abstraction layer */
ktownsend 0:ace2e8d3ce79 11 nRF51822 radio;
ktownsend 0:ace2e8d3ce79 12
ktownsend 0:ace2e8d3ce79 13 /* Heart Rate Monitor Service */
ktownsend 0:ace2e8d3ce79 14 /* See --> https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */
ktownsend 2:ffc5216bd2cc 15 GattService hrmService ( 0x180D );
ktownsend 3:46de446e82ed 16 GattCharacteristic hrmRate ( 0x2A37, 2, 3, BLE_GATT_CHAR_PROPERTIES_NOTIFY );
ktownsend 3:46de446e82ed 17 GattCharacteristic hrmLocation ( 0x2A39, 1, 1, BLE_GATT_CHAR_PROPERTIES_READ );
ktownsend 0:ace2e8d3ce79 18
ktownsend 5:7635f81a8e09 19 /* GAP Advertising Example (iBeacon) */
ktownsend 6:425638944835 20 GapAdvertisingParams advParams ( GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED );
ktownsend 5:7635f81a8e09 21 GapAdvertisingData advData;
ktownsend 7:5e1f0d7f7c7d 22 GapAdvertisingData scanResponse;
ktownsend 5:7635f81a8e09 23
ktownsend 5:7635f81a8e09 24 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 };
ktownsend 5:7635f81a8e09 25
ktownsend 5:7635f81a8e09 26 void startBeacon(void)
ktownsend 5:7635f81a8e09 27 {
ktownsend 11:200931be5617 28 ble_error_t error;
ktownsend 11:200931be5617 29
ktownsend 5:7635f81a8e09 30 /* iBeacon includes the FLAG and MSD fields */
ktownsend 5:7635f81a8e09 31 advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED);
ktownsend 5:7635f81a8e09 32 advData.addData(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, iBeaconPayload, 25);
ktownsend 5:7635f81a8e09 33
ktownsend 11:200931be5617 34 error = radio.reset();
ktownsend 11:200931be5617 35 error = radio.setAdvertising(advParams, advData, scanResponse);
ktownsend 11:200931be5617 36 error = radio.start();
ktownsend 5:7635f81a8e09 37 }
ktownsend 5:7635f81a8e09 38
ktownsend 15:327d7329072c 39 void startHRM(void)
ktownsend 0:ace2e8d3ce79 40 {
ktownsend 15:327d7329072c 41 uint8_t hrmCounter = 100;
ktownsend 0:ace2e8d3ce79 42
ktownsend 0:ace2e8d3ce79 43 /* Add the heart rate and sensor location chars to the HRM service */
ktownsend 0:ace2e8d3ce79 44 hrmService.addCharacteristic(hrmRate);
ktownsend 0:ace2e8d3ce79 45 hrmService.addCharacteristic(hrmLocation);
ktownsend 15:327d7329072c 46
ktownsend 0:ace2e8d3ce79 47 /* Reset the BLE hardware to make sure we get a clean start */
ktownsend 0:ace2e8d3ce79 48 wait(2);
ktownsend 0:ace2e8d3ce79 49 radio.reset();
ktownsend 0:ace2e8d3ce79 50
ktownsend 0:ace2e8d3ce79 51 /* Add the services to the radio HAL */
ktownsend 0:ace2e8d3ce79 52 radio.addService(hrmService);
ktownsend 0:ace2e8d3ce79 53
ktownsend 0:ace2e8d3ce79 54 /* Start the services so that we can start pushing data out */
ktownsend 0:ace2e8d3ce79 55 radio.start();
ktownsend 15:327d7329072c 56
ktownsend 0:ace2e8d3ce79 57 /* Set the heart rate monitor location (one time only) */
ktownsend 0:ace2e8d3ce79 58 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
ktownsend 0:ace2e8d3ce79 59 uint8_t location = 0x01; /* Chest */
ktownsend 2:ffc5216bd2cc 60 radio.writeCharacteristic(hrmService, hrmLocation, (uint8_t*)&location, sizeof(location));
ktownsend 0:ace2e8d3ce79 61
ktownsend 0:ace2e8d3ce79 62 while(1)
ktownsend 0:ace2e8d3ce79 63 {
ktownsend 0:ace2e8d3ce79 64 myled = 1;
ktownsend 0:ace2e8d3ce79 65 wait(0.1);
ktownsend 0:ace2e8d3ce79 66 myled = 0;
ktownsend 0:ace2e8d3ce79 67 wait(0.1);
ktownsend 0:ace2e8d3ce79 68
ktownsend 0:ace2e8d3ce79 69 /* Update the HRM measurement */
ktownsend 0:ace2e8d3ce79 70 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
ktownsend 0:ace2e8d3ce79 71 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:ace2e8d3ce79 72 hrmCounter++;
ktownsend 0:ace2e8d3ce79 73 if (hrmCounter == 175) hrmCounter = 100;
ktownsend 0:ace2e8d3ce79 74 uint8_t bpm[2] = { 0x00, hrmCounter };
ktownsend 2:ffc5216bd2cc 75 radio.writeCharacteristic(hrmService, hrmRate, bpm, 2);
ktownsend 0:ace2e8d3ce79 76 }
ktownsend 0:ace2e8d3ce79 77 }
ktownsend 15:327d7329072c 78
ktownsend 15:327d7329072c 79 int main()
ktownsend 15:327d7329072c 80 {
ktownsend 15:327d7329072c 81 /* Give the radio some time to boot up and settle */
ktownsend 15:327d7329072c 82 wait(2);
ktownsend 15:327d7329072c 83
ktownsend 15:327d7329072c 84 /* Only use one of these two options! */
ktownsend 15:327d7329072c 85 startBeacon();
ktownsend 15:327d7329072c 86 // startHRM();
ktownsend 15:327d7329072c 87
ktownsend 15:327d7329072c 88 while(1);
ktownsend 15:327d7329072c 89 }