Jie Li / Mbed 2 deprecated BLE_HeartRate

Heart Rate Monitor example for the BLE API using nRF51822 native mode drivers

Dependencies:   BLE_API mbed nRF51822 X_NUCLEO_IDB0XA1

Fork of BLE_HeartRate by Bluetooth Low Energy

main.cpp@75:8128a06c0a21, 2015-11-03 (annotated)

Committer:
vcoubard
Date:
Tue Nov 03 15:41:48 2015 +0000
Revision:
75:8128a06c0a21
Parent:
74:c9d58e7847c4 
fix waiting condition for ble initialization process

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ktownsend 0:87a7fc231fae 1 /* mbed Microcontroller Library
rgrover1 67:b2d2dee347c0 2 * Copyright (c) 2006-2015 ARM Limited
ktownsend 0:87a7fc231fae 3 *
ktownsend 0:87a7fc231fae 4 * Licensed under the Apache License, Version 2.0 (the "License");
ktownsend 0:87a7fc231fae 5 * you may not use this file except in compliance with the License.
ktownsend 0:87a7fc231fae 6 * You may obtain a copy of the License at
ktownsend 0:87a7fc231fae 7 *
ktownsend 0:87a7fc231fae 8 * http://www.apache.org/licenses/LICENSE-2.0
ktownsend 0:87a7fc231fae 9 *
ktownsend 0:87a7fc231fae 10 * Unless required by applicable law or agreed to in writing, software
ktownsend 0:87a7fc231fae 11 * distributed under the License is distributed on an "AS IS" BASIS,
ktownsend 0:87a7fc231fae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ktownsend 0:87a7fc231fae 13 * See the License for the specific language governing permissions and
ktownsend 0:87a7fc231fae 14 * limitations under the License.
ktownsend 0:87a7fc231fae 15 */
ktownsend 0:87a7fc231fae 16
ktownsend 0:87a7fc231fae 17 #include "mbed.h"
rgrover1 67:b2d2dee347c0 18 #include "ble/BLE.h"
rgrover1 67:b2d2dee347c0 19 #include "ble/services/HeartRateService.h"
rgrover1 67:b2d2dee347c0 20 #include "ble/services/BatteryService.h"
rgrover1 67:b2d2dee347c0 21 #include "ble/services/DeviceInformationService.h"
ktownsend 0:87a7fc231fae 22
rgrover1 47:430545f41113 23 DigitalOut led1(LED1);
ktownsend 0:87a7fc231fae 24
mbedAustin 55:3a7d497a3e03 25 const static char DEVICE_NAME[] = "HRM1";
rgrover1 42:06ebef2e0e44 26 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE,
rgrover1 42:06ebef2e0e44 27 GattService::UUID_DEVICE_INFORMATION_SERVICE};
rgrover1 39:6390604f904c 28 static volatile bool triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 29
rgrover1 72:99c283dfe28d 30 uint8_t hrmCounter = 100; // init HRM to 100bps
rgrover1 72:99c283dfe28d 31
rgrover1 72:99c283dfe28d 32 HeartRateService *hrService;
rgrover1 72:99c283dfe28d 33 DeviceInformationService *deviceInfo;
rgrover1 72:99c283dfe28d 34
rgrover1 71:469dbde1a238 35 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
ktownsend 0:87a7fc231fae 36 {
rgrover1 73:49b6090478e2 37 BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising(); // restart advertising
rgrover1 7:daab8ba5139e 38 }
Rohit Grover 3:24e2b056d229 39
Rohit Grover 11:1d9aafee4984 40 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 41 {
rgrover1 47:430545f41113 42 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
rgrover1 47:430545f41113 43
rgrover1 39:6390604f904c 44 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
rgrover1 39:6390604f904c 45 * heavy-weight sensor polling from the main thread. */
rgrover1 39:6390604f904c 46 triggerSensorPolling = true;
Rohit Grover 11:1d9aafee4984 47 }
Rohit Grover 11:1d9aafee4984 48
rgrover1 74:c9d58e7847c4 49 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
ktownsend 0:87a7fc231fae 50 {
rgrover1 74:c9d58e7847c4 51 BLE &ble = params->ble;
rgrover1 74:c9d58e7847c4 52 ble_error_t error = params->error;
rgrover1 74:c9d58e7847c4 53
rgrover1 72:99c283dfe28d 54 if (error != BLE_ERROR_NONE) {
rgrover1 72:99c283dfe28d 55 return;
rgrover1 72:99c283dfe28d 56 }
ktownsend 0:87a7fc231fae 57
rgrover1 65:cb76569f74f6 58 ble.gap().onDisconnection(disconnectionCallback);
ktownsend 0:87a7fc231fae 59
rgrover1 45:98c5a34b07a4 60 /* Setup primary service. */
rgrover1 72:99c283dfe28d 61 hrService = new HeartRateService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
rgrover1 45:98c5a34b07a4 62
mbedAustin 55:3a7d497a3e03 63 /* Setup auxiliary service. */
rgrover1 72:99c283dfe28d 64 deviceInfo = new DeviceInformationService(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
rgrover1 45:98c5a34b07a4 65
rgrover1 45:98c5a34b07a4 66 /* Setup advertising. */
rgrover1 65:cb76569f74f6 67 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
rgrover1 65:cb76569f74f6 68 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 65:cb76569f74f6 69 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
rgrover1 65:cb76569f74f6 70 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
rgrover1 65:cb76569f74f6 71 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 67:b2d2dee347c0 72 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
rgrover1 65:cb76569f74f6 73 ble.gap().startAdvertising();
rgrover1 72:99c283dfe28d 74 }
rgrover1 72:99c283dfe28d 75
rgrover1 72:99c283dfe28d 76 int main(void)
rgrover1 72:99c283dfe28d 77 {
rgrover1 72:99c283dfe28d 78 led1 = 1;
rgrover1 72:99c283dfe28d 79 Ticker ticker;
rgrover1 72:99c283dfe28d 80 ticker.attach(periodicCallback, 1); // blink LED every second
rgrover1 72:99c283dfe28d 81
rgrover1 73:49b6090478e2 82 BLE& ble = BLE::Instance(BLE::DEFAULT_INSTANCE);
rgrover1 72:99c283dfe28d 83 ble.init(bleInitComplete);
Rohit Grover 3:24e2b056d229 84
rgrover1 73:49b6090478e2 85 /* SpinWait for initialization to complete. This is necessary because the
rgrover1 73:49b6090478e2 86 * BLE object is used in the main loop below. */
vcoubard 75:8128a06c0a21 87 while (ble.hasInitialized() == false) { /* spin loop */ }
rgrover1 73:49b6090478e2 88
mbedAustin 55:3a7d497a3e03 89 // infinite loop
mbedAustin 55:3a7d497a3e03 90 while (1) {
mbedAustin 55:3a7d497a3e03 91 // check for trigger from periodicCallback()
rgrover1 50:477004d54431 92 if (triggerSensorPolling && ble.getGapState().connected) {
Rohit Grover 36:ea2a1b4f51c1 93 triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 94
mbedAustin 55:3a7d497a3e03 95 // Do blocking calls or whatever is necessary for sensor polling.
rgrover1 67:b2d2dee347c0 96 // In our case, we simply update the HRM measurement.
Rohit Grover 36:ea2a1b4f51c1 97 hrmCounter++;
rgrover1 72:99c283dfe28d 98 if (hrmCounter == 175) { // 100 <= HRM bps <=175
Rohit Grover 36:ea2a1b4f51c1 99 hrmCounter = 100;
Rohit Grover 36:ea2a1b4f51c1 100 }
rgrover1 67:b2d2dee347c0 101
rgrover1 72:99c283dfe28d 102 hrService->updateHeartRate(hrmCounter);
Rohit Grover 36:ea2a1b4f51c1 103 } else {
mbedAustin 55:3a7d497a3e03 104 ble.waitForEvent(); // low power wait for event
Rohit Grover 36:ea2a1b4f51c1 105 }
ktownsend 0:87a7fc231fae 106 }
ktownsend 0:87a7fc231fae 107 }