MFR16 / Mbed 2 deprecated BLE_HR_Light

Example to simulate photoplethysmography for heart rate and transmit via BLE

Dependencies:   BLE_API X_NUCLEO_6180XA1 X_NUCLEO_IDB0XA1 mbed

Fork of BLE_HeartRate_IDB0XA1 by ST

main.cpp@0:eb7f02ad28a7, 2015-09-22 (annotated)

Committer:
screamer
Date:
Tue Sep 22 18:11:51 2015 +0000
Revision:
0:eb7f02ad28a7
Child:
1:11cd427bbc8b
Initial revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:eb7f02ad28a7 1 /* mbed Microcontroller Library
screamer 0:eb7f02ad28a7 2 * Copyright (c) 2006-2015 ARM Limited
screamer 0:eb7f02ad28a7 3 *
screamer 0:eb7f02ad28a7 4 * Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:eb7f02ad28a7 5 * you may not use this file except in compliance with the License.
screamer 0:eb7f02ad28a7 6 * You may obtain a copy of the License at
screamer 0:eb7f02ad28a7 7 *
screamer 0:eb7f02ad28a7 8 * http://www.apache.org/licenses/LICENSE-2.0
screamer 0:eb7f02ad28a7 9 *
screamer 0:eb7f02ad28a7 10 * Unless required by applicable law or agreed to in writing, software
screamer 0:eb7f02ad28a7 11 * distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:eb7f02ad28a7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:eb7f02ad28a7 13 * See the License for the specific language governing permissions and
screamer 0:eb7f02ad28a7 14 * limitations under the License.
screamer 0:eb7f02ad28a7 15 */
screamer 0:eb7f02ad28a7 16
screamer 0:eb7f02ad28a7 17 #include "mbed.h"
screamer 0:eb7f02ad28a7 18 #include "ble/BLE.h"
screamer 0:eb7f02ad28a7 19 #include "ble/services/HeartRateService.h"
screamer 0:eb7f02ad28a7 20 #include "ble/services/BatteryService.h"
screamer 0:eb7f02ad28a7 21 #include "ble/services/DeviceInformationService.h"
screamer 0:eb7f02ad28a7 22
screamer 0:eb7f02ad28a7 23 BLE ble;
screamer 0:eb7f02ad28a7 24 DigitalOut led1(LED1);
screamer 0:eb7f02ad28a7 25
screamer 0:eb7f02ad28a7 26 const static char DEVICE_NAME[] = "HRM1";
screamer 0:eb7f02ad28a7 27 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE,
screamer 0:eb7f02ad28a7 28 GattService::UUID_DEVICE_INFORMATION_SERVICE};
screamer 0:eb7f02ad28a7 29 static volatile bool triggerSensorPolling = false;
screamer 0:eb7f02ad28a7 30
screamer 0:eb7f02ad28a7 31 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
screamer 0:eb7f02ad28a7 32 {
screamer 0:eb7f02ad28a7 33 ble.gap().startAdvertising(); // restart advertising
screamer 0:eb7f02ad28a7 34 }
screamer 0:eb7f02ad28a7 35
screamer 0:eb7f02ad28a7 36 void periodicCallback(void)
screamer 0:eb7f02ad28a7 37 {
screamer 0:eb7f02ad28a7 38 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
screamer 0:eb7f02ad28a7 39
screamer 0:eb7f02ad28a7 40 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
screamer 0:eb7f02ad28a7 41 * heavy-weight sensor polling from the main thread. */
screamer 0:eb7f02ad28a7 42 triggerSensorPolling = true;
screamer 0:eb7f02ad28a7 43 }
screamer 0:eb7f02ad28a7 44
screamer 0:eb7f02ad28a7 45 int main(void)
screamer 0:eb7f02ad28a7 46 {
screamer 0:eb7f02ad28a7 47 led1 = 1;
screamer 0:eb7f02ad28a7 48 Ticker ticker;
screamer 0:eb7f02ad28a7 49 ticker.attach(periodicCallback, 1); // blink LED every second
screamer 0:eb7f02ad28a7 50
screamer 0:eb7f02ad28a7 51 ble.init();
screamer 0:eb7f02ad28a7 52 ble.gap().onDisconnection(disconnectionCallback);
screamer 0:eb7f02ad28a7 53
screamer 0:eb7f02ad28a7 54 /* Setup primary service. */
screamer 0:eb7f02ad28a7 55 uint8_t hrmCounter = 100; // init HRM to 100bps
screamer 0:eb7f02ad28a7 56 HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
screamer 0:eb7f02ad28a7 57
screamer 0:eb7f02ad28a7 58 /* Setup auxiliary service. */
screamer 0:eb7f02ad28a7 59 DeviceInformationService deviceInfo(ble, "ARM", "Model1", "SN1", "hw-rev1", "fw-rev1", "soft-rev1");
screamer 0:eb7f02ad28a7 60
screamer 0:eb7f02ad28a7 61 /* Setup advertising. */
screamer 0:eb7f02ad28a7 62 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
screamer 0:eb7f02ad28a7 63 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
screamer 0:eb7f02ad28a7 64 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
screamer 0:eb7f02ad28a7 65 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
screamer 0:eb7f02ad28a7 66 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
screamer 0:eb7f02ad28a7 67 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
screamer 0:eb7f02ad28a7 68 ble.gap().startAdvertising();
screamer 0:eb7f02ad28a7 69
screamer 0:eb7f02ad28a7 70 // infinite loop
screamer 0:eb7f02ad28a7 71 while (1) {
screamer 0:eb7f02ad28a7 72 // check for trigger from periodicCallback()
screamer 0:eb7f02ad28a7 73 if (triggerSensorPolling && ble.getGapState().connected) {
screamer 0:eb7f02ad28a7 74 triggerSensorPolling = false;
screamer 0:eb7f02ad28a7 75
screamer 0:eb7f02ad28a7 76 // Do blocking calls or whatever is necessary for sensor polling.
screamer 0:eb7f02ad28a7 77 // In our case, we simply update the HRM measurement.
screamer 0:eb7f02ad28a7 78 hrmCounter++;
screamer 0:eb7f02ad28a7 79
screamer 0:eb7f02ad28a7 80 // 100 <= HRM bps <=175
screamer 0:eb7f02ad28a7 81 if (hrmCounter == 175) {
screamer 0:eb7f02ad28a7 82 hrmCounter = 100;
screamer 0:eb7f02ad28a7 83 }
screamer 0:eb7f02ad28a7 84
screamer 0:eb7f02ad28a7 85 // update bps
screamer 0:eb7f02ad28a7 86 hrService.updateHeartRate(hrmCounter);
screamer 0:eb7f02ad28a7 87 } else {
screamer 0:eb7f02ad28a7 88 ble.waitForEvent(); // low power wait for event
screamer 0:eb7f02ad28a7 89 }
screamer 0:eb7f02ad28a7 90 }
screamer 0:eb7f02ad28a7 91 }