Pei-Ping Mo / Mbed 2 deprecated BLE_HeartRate_ppm

heart rate monitor

Dependencies:   BLE_API GroveEarbudSensor mbed nRF51822

Fork of BLE_HeartRate by Bluetooth Low Energy

main.cpp@67:b2d2dee347c0, 2015-07-01 (annotated)

Committer:
rgrover1
Date:
Wed Jul 01 07:45:55 2015 +0000
Revision:
67:b2d2dee347c0
Parent:
66:c09ddf226b9c
Child:
71:c86b4658af70
update path for header includes.

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 67:b2d2dee347c0 23 BLE ble;
rgrover1 47:430545f41113 24 DigitalOut led1(LED1);
ktownsend 0:87a7fc231fae 25
mbedAustin 55:3a7d497a3e03 26 const static char DEVICE_NAME[] = "HRM1";
rgrover1 42:06ebef2e0e44 27 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE,
rgrover1 42:06ebef2e0e44 28 GattService::UUID_DEVICE_INFORMATION_SERVICE};
rgrover1 39:6390604f904c 29 static volatile bool triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 30
rgrover1 41:9cef0129da5f 31 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
ktownsend 0:87a7fc231fae 32 {
rgrover1 66:c09ddf226b9c 33 ble.gap().startAdvertising(); // restart advertising
rgrover1 7:daab8ba5139e 34 }
Rohit Grover 3:24e2b056d229 35
Rohit Grover 11:1d9aafee4984 36 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 37 {
rgrover1 47:430545f41113 38 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
rgrover1 47:430545f41113 39
rgrover1 39:6390604f904c 40 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
rgrover1 39:6390604f904c 41 * heavy-weight sensor polling from the main thread. */
rgrover1 39:6390604f904c 42 triggerSensorPolling = true;
Rohit Grover 11:1d9aafee4984 43 }
Rohit Grover 11:1d9aafee4984 44
ktownsend 0:87a7fc231fae 45 int main(void)
ktownsend 0:87a7fc231fae 46 {
rgrover1 47:430545f41113 47 led1 = 1;
Rohit Grover 11:1d9aafee4984 48 Ticker ticker;
mbedAustin 55:3a7d497a3e03 49 ticker.attach(periodicCallback, 1); // blink LED every second
ktownsend 0:87a7fc231fae 50
Rohit Grover 15:7ba28817e31e 51 ble.init();
rgrover1 65:cb76569f74f6 52 ble.gap().onDisconnection(disconnectionCallback);
ktownsend 0:87a7fc231fae 53
rgrover1 45:98c5a34b07a4 54 /* Setup primary service. */
mbedAustin 55:3a7d497a3e03 55 uint8_t hrmCounter = 100; // init HRM to 100bps
rgrover1 45:98c5a34b07a4 56 HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
rgrover1 45:98c5a34b07a4 57
mbedAustin 55:3a7d497a3e03 58 /* Setup auxiliary service. */
rgrover1 45:98c5a34b07a4 59 DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
rgrover1 45:98c5a34b07a4 60
rgrover1 45:98c5a34b07a4 61 /* Setup advertising. */
rgrover1 65:cb76569f74f6 62 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
rgrover1 65:cb76569f74f6 63 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 65:cb76569f74f6 64 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
rgrover1 65:cb76569f74f6 65 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
rgrover1 65:cb76569f74f6 66 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 67:b2d2dee347c0 67 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
rgrover1 65:cb76569f74f6 68 ble.gap().startAdvertising();
Rohit Grover 3:24e2b056d229 69
mbedAustin 55:3a7d497a3e03 70 // infinite loop
mbedAustin 55:3a7d497a3e03 71 while (1) {
mbedAustin 55:3a7d497a3e03 72 // check for trigger from periodicCallback()
rgrover1 50:477004d54431 73 if (triggerSensorPolling && ble.getGapState().connected) {
Rohit Grover 36:ea2a1b4f51c1 74 triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 75
mbedAustin 55:3a7d497a3e03 76 // Do blocking calls or whatever is necessary for sensor polling.
rgrover1 67:b2d2dee347c0 77 // In our case, we simply update the HRM measurement.
Rohit Grover 36:ea2a1b4f51c1 78 hrmCounter++;
rgrover1 67:b2d2dee347c0 79
mbedAustin 55:3a7d497a3e03 80 // 100 <= HRM bps <=175
Rohit Grover 36:ea2a1b4f51c1 81 if (hrmCounter == 175) {
Rohit Grover 36:ea2a1b4f51c1 82 hrmCounter = 100;
Rohit Grover 36:ea2a1b4f51c1 83 }
rgrover1 67:b2d2dee347c0 84
mbedAustin 55:3a7d497a3e03 85 // update bps
rgrover1 39:6390604f904c 86 hrService.updateHeartRate(hrmCounter);
Rohit Grover 36:ea2a1b4f51c1 87 } else {
mbedAustin 55:3a7d497a3e03 88 ble.waitForEvent(); // low power wait for event
Rohit Grover 36:ea2a1b4f51c1 89 }
ktownsend 0:87a7fc231fae 90 }
ktownsend 0:87a7fc231fae 91 }