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@22:d191c27f917d, 2016-10-06 (annotated)

Committer:
mfr16
Date:
Thu Oct 06 11:35:53 2016 +0000
Revision:
22:d191c27f917d
Parent:
21:0e7c08f5386f 
Example to simulate photoplethysmography for heart rate and transmit via BLE

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"
mfr16 22:d191c27f917d 20 #include "x_nucleo_6180xa1.h"
mfr16 22:d191c27f917d 21
mfr16 22:d191c27f917d 22 #define VL6180X_I2C_SDA D14
mfr16 22:d191c27f917d 23 #define VL6180X_I2C_SCL D15
mfr16 22:d191c27f917d 24
mfr16 22:d191c27f917d 25 static X_NUCLEO_6180XA1 *board=NULL;
screamer 0:eb7f02ad28a7 26
apalmieri 13:227a0149b677 27 DigitalOut led1(LED1, 1);
screamer 0:eb7f02ad28a7 28
mfr16 22:d191c27f917d 29 const static char DEVICE_NAME[] = "HRMFR16";
apalmieri 13:227a0149b677 30 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE};
apalmieri 13:227a0149b677 31
screamer 0:eb7f02ad28a7 32 static volatile bool triggerSensorPolling = false;
screamer 0:eb7f02ad28a7 33
apalmieri 2:bc0c0d442a24 34 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
screamer 0:eb7f02ad28a7 35 {
apalmieri 13:227a0149b677 36 (void)params;
apalmieri 13:227a0149b677 37 BLE::Instance().gap().startAdvertising(); // restart advertising
screamer 0:eb7f02ad28a7 38 }
screamer 0:eb7f02ad28a7 39
screamer 0:eb7f02ad28a7 40 void periodicCallback(void)
screamer 0:eb7f02ad28a7 41 {
screamer 0:eb7f02ad28a7 42 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
screamer 0:eb7f02ad28a7 43 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
screamer 0:eb7f02ad28a7 44 * heavy-weight sensor polling from the main thread. */
screamer 0:eb7f02ad28a7 45 triggerSensorPolling = true;
screamer 0:eb7f02ad28a7 46 }
screamer 0:eb7f02ad28a7 47
apalmieri 13:227a0149b677 48 void onBleInitError(BLE &ble, ble_error_t error)
apalmieri 13:227a0149b677 49 {
apalmieri 13:227a0149b677 50 (void)ble;
apalmieri 13:227a0149b677 51 (void)error;
apalmieri 13:227a0149b677 52 /* Initialization error handling should go here */
apalmieri 13:227a0149b677 53 }
apalmieri 13:227a0149b677 54
apalmieri 13:227a0149b677 55 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
screamer 0:eb7f02ad28a7 56 {
apalmieri 13:227a0149b677 57 BLE& ble = params->ble;
apalmieri 13:227a0149b677 58 ble_error_t error = params->error;
screamer 0:eb7f02ad28a7 59
apalmieri 13:227a0149b677 60 if (error != BLE_ERROR_NONE) {
apalmieri 13:227a0149b677 61 onBleInitError(ble, error);
apalmieri 13:227a0149b677 62 return;
apalmieri 13:227a0149b677 63 }
apalmieri 13:227a0149b677 64
apalmieri 13:227a0149b677 65 if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
apalmieri 13:227a0149b677 66 return;
apalmieri 13:227a0149b677 67 }
apalmieri 13:227a0149b677 68
screamer 0:eb7f02ad28a7 69 ble.gap().onDisconnection(disconnectionCallback);
screamer 0:eb7f02ad28a7 70
screamer 0:eb7f02ad28a7 71 /* Setup primary service. */
mfr16 22:d191c27f917d 72 uint8_t hrmCounter = 100; // init HRM to 100bps
screamer 0:eb7f02ad28a7 73 HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
screamer 0:eb7f02ad28a7 74
mfr16 22:d191c27f917d 75 uint32_t lux, dist;
mfr16 22:d191c27f917d 76 uint32_t luxThreshold = 250;
mfr16 22:d191c27f917d 77
screamer 0:eb7f02ad28a7 78 /* Setup advertising. */
screamer 0:eb7f02ad28a7 79 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
screamer 0:eb7f02ad28a7 80 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
screamer 0:eb7f02ad28a7 81 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
screamer 0:eb7f02ad28a7 82 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
screamer 0:eb7f02ad28a7 83 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
screamer 0:eb7f02ad28a7 84 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
screamer 0:eb7f02ad28a7 85 ble.gap().startAdvertising();
screamer 0:eb7f02ad28a7 86
screamer 0:eb7f02ad28a7 87 // infinite loop
apalmieri 13:227a0149b677 88 while (true) {
screamer 0:eb7f02ad28a7 89 // check for trigger from periodicCallback()
screamer 0:eb7f02ad28a7 90 if (triggerSensorPolling && ble.getGapState().connected) {
screamer 0:eb7f02ad28a7 91 triggerSensorPolling = false;
screamer 0:eb7f02ad28a7 92
mfr16 22:d191c27f917d 93 board->sensor_top->GetDistance(&dist);
mfr16 22:d191c27f917d 94 board->sensor_top->GetLux(&lux);
screamer 0:eb7f02ad28a7 95
mfr16 22:d191c27f917d 96 if (lux<=luxThreshold) {
mfr16 22:d191c27f917d 97 hrmCounter = 95;
mfr16 22:d191c27f917d 98 } else {
mfr16 22:d191c27f917d 99 hrmCounter = 65;
screamer 0:eb7f02ad28a7 100 }
screamer 0:eb7f02ad28a7 101
screamer 0:eb7f02ad28a7 102 // update bps
screamer 0:eb7f02ad28a7 103 hrService.updateHeartRate(hrmCounter);
screamer 0:eb7f02ad28a7 104 } else {
screamer 0:eb7f02ad28a7 105 ble.waitForEvent(); // low power wait for event
screamer 0:eb7f02ad28a7 106 }
screamer 0:eb7f02ad28a7 107 }
screamer 0:eb7f02ad28a7 108 }
apalmieri 13:227a0149b677 109
apalmieri 13:227a0149b677 110 int main(void)
apalmieri 13:227a0149b677 111 {
mfr16 22:d191c27f917d 112 int status;
mfr16 22:d191c27f917d 113
apalmieri 13:227a0149b677 114 Ticker ticker;
apalmieri 13:227a0149b677 115 ticker.attach(periodicCallback, 1); // blink LED every second
mfr16 22:d191c27f917d 116
mfr16 22:d191c27f917d 117 DevI2C *device_i2c =new DevI2C(VL6180X_I2C_SDA, VL6180X_I2C_SCL);
mfr16 22:d191c27f917d 118 /* creates the 6180XA1 expansion board singleton obj */
mfr16 22:d191c27f917d 119 board=X_NUCLEO_6180XA1::Instance(device_i2c, NC,NC,NC,NC);//A3, A2, D13, D2);
mfr16 22:d191c27f917d 120 /* init the 6180XA1 expansion board with default values */
mfr16 22:d191c27f917d 121 status=board->InitBoard();
mfr16 22:d191c27f917d 122 if(status) { printf("Failed to init board!\n\r"); return 0; }
apalmieri 13:227a0149b677 123
apalmieri 13:227a0149b677 124 BLE::Instance().init(bleInitComplete);
apalmieri 13:227a0149b677 125 }
apalmieri 14:f715c13eb84f 126