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@73:32250c7c8e68, 2015-08-29 (annotated)

Committer:
ppm2005
Date:
Sat Aug 29 18:48:08 2015 +0000
Revision:
73:32250c7c8e68
Parent:
72:cc9b1d195d9f 
closed extra session

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"
ppm2005 71:c86b4658af70 22 // Grove Earbud Sensor include
ppm2005 71:c86b4658af70 23 #include "GroveEarbudSensor.h"
rgrover1 67:b2d2dee347c0 24 BLE ble;
rgrover1 47:430545f41113 25 DigitalOut led1(LED1);
ppm2005 71:c86b4658af70 26 // Our sensor as an InterruptIn
ppm2005 71:c86b4658af70 27 InterruptIn sensor(P0_0);
ktownsend 0:87a7fc231fae 28
mbedAustin 55:3a7d497a3e03 29 const static char DEVICE_NAME[] = "HRM1";
rgrover1 42:06ebef2e0e44 30 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE,
ppm2005 73:32250c7c8e68 31 GattService::UUID_DEVICE_INFORMATION_SERVICE
ppm2005 73:32250c7c8e68 32 };
rgrover1 39:6390604f904c 33 static volatile bool triggerSensorPolling = false;
ppm2005 73:32250c7c8e68 34 /* Setup primary service. */
ppm2005 73:32250c7c8e68 35 uint8_t hrmCounter = 100; // init HRM to 100bps
ppm2005 72:cc9b1d195d9f 36
Rohit Grover 36:ea2a1b4f51c1 37
ppm2005 71:c86b4658af70 38 // callback for receiving heartrate values
ppm2005 73:32250c7c8e68 39 void heartrateCallback(float heartrate,void *data)
ppm2005 73:32250c7c8e68 40 {
ppm2005 71:c86b4658af70 41 printf("Callback: heartrate = %.1f\r\n",heartrate);
ppm2005 73:32250c7c8e68 42 // we can also call directly
ppm2005 73:32250c7c8e68 43 hrmCounter=heartrate;
ppm2005 72:cc9b1d195d9f 44
ppm2005 73:32250c7c8e68 45
ppm2005 73:32250c7c8e68 46 // update bps
ppm2005 73:32250c7c8e68 47 //hrService.updateHeartRate(hrmCounter);
ppm2005 71:c86b4658af70 48 }
rgrover1 41:9cef0129da5f 49 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
ktownsend 0:87a7fc231fae 50 {
rgrover1 66:c09ddf226b9c 51 ble.gap().startAdvertising(); // restart advertising
rgrover1 7:daab8ba5139e 52 }
Rohit Grover 3:24e2b056d229 53
Rohit Grover 11:1d9aafee4984 54 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 55 {
rgrover1 47:430545f41113 56 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
rgrover1 47:430545f41113 57
rgrover1 39:6390604f904c 58 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
rgrover1 39:6390604f904c 59 * heavy-weight sensor polling from the main thread. */
rgrover1 39:6390604f904c 60 triggerSensorPolling = true;
Rohit Grover 11:1d9aafee4984 61 }
Rohit Grover 11:1d9aafee4984 62
ktownsend 0:87a7fc231fae 63 int main(void)
ktownsend 0:87a7fc231fae 64 {
rgrover1 47:430545f41113 65 led1 = 1;
Rohit Grover 11:1d9aafee4984 66 Ticker ticker;
mbedAustin 55:3a7d497a3e03 67 ticker.attach(periodicCallback, 1); // blink LED every second
ktownsend 0:87a7fc231fae 68
Rohit Grover 15:7ba28817e31e 69 ble.init();
rgrover1 65:cb76569f74f6 70 ble.gap().onDisconnection(disconnectionCallback);
ktownsend 0:87a7fc231fae 71
ppm2005 73:32250c7c8e68 72
rgrover1 45:98c5a34b07a4 73 HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
rgrover1 45:98c5a34b07a4 74
mbedAustin 55:3a7d497a3e03 75 /* Setup auxiliary service. */
rgrover1 45:98c5a34b07a4 76 DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
rgrover1 45:98c5a34b07a4 77
rgrover1 45:98c5a34b07a4 78 /* Setup advertising. */
rgrover1 65:cb76569f74f6 79 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
rgrover1 65:cb76569f74f6 80 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 65:cb76569f74f6 81 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
rgrover1 65:cb76569f74f6 82 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
rgrover1 65:cb76569f74f6 83 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 67:b2d2dee347c0 84 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
rgrover1 65:cb76569f74f6 85 ble.gap().startAdvertising();
ppm2005 73:32250c7c8e68 86 // announce
ppm2005 73:32250c7c8e68 87 printf("Grove Earbud Sensor - Montoring Heart Rate\r\n");
Rohit Grover 3:24e2b056d229 88
ppm2005 73:32250c7c8e68 89 // allocate the earbud sensor
ppm2005 73:32250c7c8e68 90 printf("Allocating earbud sensor instance...\r\n");
ppm2005 73:32250c7c8e68 91 GroveEarbudSensor earbud(&sensor);
ppm2005 73:32250c7c8e68 92
ppm2005 73:32250c7c8e68 93 // register our callback function
ppm2005 73:32250c7c8e68 94 printf("registering callback...\r\n");
ppm2005 73:32250c7c8e68 95 earbud.registerCallback(heartrateCallback);
ppm2005 73:32250c7c8e68 96
mbedAustin 55:3a7d497a3e03 97 // infinite loop
mbedAustin 55:3a7d497a3e03 98 while (1) {
mbedAustin 55:3a7d497a3e03 99 // check for trigger from periodicCallback()
rgrover1 50:477004d54431 100 if (triggerSensorPolling && ble.getGapState().connected) {
Rohit Grover 36:ea2a1b4f51c1 101 triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 102
mbedAustin 55:3a7d497a3e03 103 // Do blocking calls or whatever is necessary for sensor polling.
rgrover1 67:b2d2dee347c0 104 // In our case, we simply update the HRM measurement.
ppm2005 73:32250c7c8e68 105 // hrmCounter++;
rgrover1 67:b2d2dee347c0 106
mbedAustin 55:3a7d497a3e03 107 // 100 <= HRM bps <=175
ppm2005 71:c86b4658af70 108 /*if (hrmCounter == 175) {
Rohit Grover 36:ea2a1b4f51c1 109 hrmCounter = 100;
ppm2005 71:c86b4658af70 110 }*/
ppm2005 72:cc9b1d195d9f 111
ppm2005 73:32250c7c8e68 112 // blink...
ppm2005 73:32250c7c8e68 113 led1 = !led1;
ppm2005 73:32250c7c8e68 114 wait(0.5);
rgrover1 39:6390604f904c 115 hrService.updateHeartRate(hrmCounter);
Rohit Grover 36:ea2a1b4f51c1 116 } else {
mbedAustin 55:3a7d497a3e03 117 ble.waitForEvent(); // low power wait for event
Rohit Grover 36:ea2a1b4f51c1 118 }
ktownsend 0:87a7fc231fae 119 }
ktownsend 0:87a7fc231fae 120 }