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
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?
User | Revision | Line number | New 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 |