Marcus Wong / Mbed OS HRS-Security

Implementation of Heart Rate Service on nRF52-DK with security (bonding/pairing procedure). Correct key for smartphone to enter is printed on serial. Baud rate 9600, 8 bits + 1 stop bit + no parity bit.

Fork of mbed-os-example-ble-HeartRate by mbed-os-examples

source/main.cpp@26:d7dd71a8aea1, 2017-05-10 (annotated)

Committer:
mbed_official
Date:
Wed May 10 10:17:02 2017 +0100
Revision:
26:d7dd71a8aea1
Parent:
10:ac3615194d04
Child:
43:fb2855f7754b
Merge pull request #78 from ashok-rao/master



Using predefined macro for EVENT SIZE.

.

Commit copied from https://github.com/ARMmbed/mbed-os-example-ble

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 1:72c60abef7e7 1 /* mbed Microcontroller Library
mbed_official 1:72c60abef7e7 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 1:72c60abef7e7 3 *
mbed_official 1:72c60abef7e7 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 1:72c60abef7e7 5 * you may not use this file except in compliance with the License.
mbed_official 1:72c60abef7e7 6 * You may obtain a copy of the License at
mbed_official 1:72c60abef7e7 7 *
mbed_official 1:72c60abef7e7 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 1:72c60abef7e7 9 *
mbed_official 1:72c60abef7e7 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 1:72c60abef7e7 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 1:72c60abef7e7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 1:72c60abef7e7 13 * See the License for the specific language governing permissions and
mbed_official 1:72c60abef7e7 14 * limitations under the License.
mbed_official 1:72c60abef7e7 15 */
mbed_official 1:72c60abef7e7 16
mbed_official 10:ac3615194d04 17 #include <events/mbed_events.h>
mbed_official 1:72c60abef7e7 18 #include <mbed.h>
mbed_official 1:72c60abef7e7 19 #include "ble/BLE.h"
mbed_official 1:72c60abef7e7 20 #include "ble/Gap.h"
mbed_official 1:72c60abef7e7 21 #include "ble/services/HeartRateService.h"
mbed_official 1:72c60abef7e7 22
mbed_official 1:72c60abef7e7 23 DigitalOut led1(LED1, 1);
mbed_official 1:72c60abef7e7 24
mbed_official 1:72c60abef7e7 25 const static char DEVICE_NAME[] = "HRM";
mbed_official 1:72c60abef7e7 26 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE};
mbed_official 1:72c60abef7e7 27
mbed_official 1:72c60abef7e7 28 static uint8_t hrmCounter = 100; // init HRM to 100bps
mbed_official 1:72c60abef7e7 29 static HeartRateService *hrServicePtr;
mbed_official 1:72c60abef7e7 30
mbed_official 26:d7dd71a8aea1 31 static EventQueue eventQueue(/* event count */ 16 * EVENTS_EVENT_SIZE);
mbed_official 1:72c60abef7e7 32
mbed_official 1:72c60abef7e7 33 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
mbed_official 1:72c60abef7e7 34 {
mbed_official 1:72c60abef7e7 35 BLE::Instance().gap().startAdvertising(); // restart advertising
mbed_official 1:72c60abef7e7 36 }
mbed_official 1:72c60abef7e7 37
mbed_official 1:72c60abef7e7 38 void updateSensorValue() {
mbed_official 1:72c60abef7e7 39 // Do blocking calls or whatever is necessary for sensor polling.
mbed_official 1:72c60abef7e7 40 // In our case, we simply update the HRM measurement.
mbed_official 1:72c60abef7e7 41 hrmCounter++;
mbed_official 1:72c60abef7e7 42
mbed_official 1:72c60abef7e7 43 // 100 <= HRM bps <=175
mbed_official 1:72c60abef7e7 44 if (hrmCounter == 175) {
mbed_official 1:72c60abef7e7 45 hrmCounter = 100;
mbed_official 1:72c60abef7e7 46 }
mbed_official 1:72c60abef7e7 47
mbed_official 1:72c60abef7e7 48 hrServicePtr->updateHeartRate(hrmCounter);
mbed_official 1:72c60abef7e7 49 }
mbed_official 1:72c60abef7e7 50
mbed_official 1:72c60abef7e7 51 void periodicCallback(void)
mbed_official 1:72c60abef7e7 52 {
mbed_official 1:72c60abef7e7 53 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
mbed_official 1:72c60abef7e7 54
mbed_official 1:72c60abef7e7 55 if (BLE::Instance().getGapState().connected) {
mbed_official 10:ac3615194d04 56 eventQueue.call(updateSensorValue);
mbed_official 1:72c60abef7e7 57 }
mbed_official 1:72c60abef7e7 58 }
mbed_official 1:72c60abef7e7 59
mbed_official 1:72c60abef7e7 60 void onBleInitError(BLE &ble, ble_error_t error)
mbed_official 1:72c60abef7e7 61 {
mbed_official 1:72c60abef7e7 62 (void)ble;
mbed_official 1:72c60abef7e7 63 (void)error;
mbed_official 1:72c60abef7e7 64 /* Initialization error handling should go here */
mbed_official 1:72c60abef7e7 65 }
mbed_official 1:72c60abef7e7 66
mbed_official 1:72c60abef7e7 67 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
mbed_official 1:72c60abef7e7 68 {
mbed_official 1:72c60abef7e7 69 BLE& ble = params->ble;
mbed_official 1:72c60abef7e7 70 ble_error_t error = params->error;
mbed_official 1:72c60abef7e7 71
mbed_official 1:72c60abef7e7 72 if (error != BLE_ERROR_NONE) {
mbed_official 1:72c60abef7e7 73 onBleInitError(ble, error);
mbed_official 1:72c60abef7e7 74 return;
mbed_official 1:72c60abef7e7 75 }
mbed_official 1:72c60abef7e7 76
mbed_official 1:72c60abef7e7 77 if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
mbed_official 1:72c60abef7e7 78 return;
mbed_official 1:72c60abef7e7 79 }
mbed_official 1:72c60abef7e7 80
mbed_official 1:72c60abef7e7 81 ble.gap().onDisconnection(disconnectionCallback);
mbed_official 1:72c60abef7e7 82
mbed_official 1:72c60abef7e7 83 /* Setup primary service. */
mbed_official 1:72c60abef7e7 84 hrServicePtr = new HeartRateService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
mbed_official 1:72c60abef7e7 85
mbed_official 1:72c60abef7e7 86 /* Setup advertising. */
mbed_official 1:72c60abef7e7 87 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
mbed_official 1:72c60abef7e7 88 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
mbed_official 1:72c60abef7e7 89 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
mbed_official 1:72c60abef7e7 90 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
mbed_official 1:72c60abef7e7 91 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
mbed_official 1:72c60abef7e7 92 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
mbed_official 1:72c60abef7e7 93 ble.gap().startAdvertising();
mbed_official 1:72c60abef7e7 94 }
mbed_official 1:72c60abef7e7 95
mbed_official 1:72c60abef7e7 96 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
mbed_official 1:72c60abef7e7 97 BLE &ble = BLE::Instance();
mbed_official 10:ac3615194d04 98 eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
mbed_official 1:72c60abef7e7 99 }
mbed_official 1:72c60abef7e7 100
mbed_official 1:72c60abef7e7 101 int main()
mbed_official 1:72c60abef7e7 102 {
mbed_official 10:ac3615194d04 103 eventQueue.call_every(500, periodicCallback);
mbed_official 1:72c60abef7e7 104
mbed_official 1:72c60abef7e7 105 BLE &ble = BLE::Instance();
mbed_official 1:72c60abef7e7 106 ble.onEventsToProcess(scheduleBleEventsProcessing);
mbed_official 1:72c60abef7e7 107 ble.init(bleInitComplete);
mbed_official 1:72c60abef7e7 108
mbed_official 10:ac3615194d04 109 eventQueue.dispatch_forever();
mbed_official 1:72c60abef7e7 110
mbed_official 1:72c60abef7e7 111 return 0;
mbed_official 1:72c60abef7e7 112 }