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@72:cc9b1d195d9f, 2015-08-29 (annotated)

Committer:
ppm2005
Date:
Sat Aug 29 18:44:12 2015 +0000
Revision:
72:cc9b1d195d9f
Parent:
71:c86b4658af70
Child:
73:32250c7c8e68
fixed main loop and added callback for earbud sensor

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