Techcon 2014 BLE sample Police HRM (earbud-based) for Nordic
Dependencies: BLE_API GroveEarbudSensor mbed nRF51822 BufferedSerial
main.cpp@1:34a767241de5, 2014-09-26 (annotated)
- Committer:
- ansond
- Date:
- Fri Sep 26 02:36:39 2014 +0000
- Revision:
- 1:34a767241de5
- Parent:
- 0:aa970fb89a5c
- Child:
- 4:093502479b1d
switched to buffered serial
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ansond | 0:aa970fb89a5c | 1 | /* mbed Microcontroller Library |
ansond | 0:aa970fb89a5c | 2 | * Copyright (c) 2006-2013 ARM Limited |
ansond | 0:aa970fb89a5c | 3 | * |
ansond | 0:aa970fb89a5c | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
ansond | 0:aa970fb89a5c | 5 | * you may not use this file except in compliance with the License. |
ansond | 0:aa970fb89a5c | 6 | * You may obtain a copy of the License at |
ansond | 0:aa970fb89a5c | 7 | * |
ansond | 0:aa970fb89a5c | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
ansond | 0:aa970fb89a5c | 9 | * |
ansond | 0:aa970fb89a5c | 10 | * Unless required by applicable law or agreed to in writing, software |
ansond | 0:aa970fb89a5c | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
ansond | 0:aa970fb89a5c | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
ansond | 0:aa970fb89a5c | 13 | * See the License for the specific language governing permissions and |
ansond | 0:aa970fb89a5c | 14 | * limitations under the License. |
ansond | 0:aa970fb89a5c | 15 | */ |
ansond | 0:aa970fb89a5c | 16 | |
ansond | 0:aa970fb89a5c | 17 | #include "mbed.h" |
ansond | 0:aa970fb89a5c | 18 | #include "BLEDevice.h" |
ansond | 0:aa970fb89a5c | 19 | #include "HeartRateService.h" |
ansond | 0:aa970fb89a5c | 20 | |
ansond | 0:aa970fb89a5c | 21 | // ********************* BEGIN Tunables for TechCon 2014 |
ansond | 0:aa970fb89a5c | 22 | |
ansond | 0:aa970fb89a5c | 23 | // !!!!IMPORTANT!!!! CHANGE DEVICE_NAME so that you can find *YOUR* Nordic board in the workshop on your phone!! |
ansond | 0:aa970fb89a5c | 24 | const static char DEVICE_NAME[] = "Policeman #1234"; // what we want to appear as in mBED device server |
ansond | 0:aa970fb89a5c | 25 | |
ansond | 0:aa970fb89a5c | 26 | #define HRM_INCREMENT 10 // increment of HRM per button press (+/-) |
ansond | 0:aa970fb89a5c | 27 | #define HRM_DEFAULT_INIT 70 // default HRM (button only... earbud defaults to offline status) |
ansond | 0:aa970fb89a5c | 28 | #define ENABLE_CONSOLE 1 // 0 - no serial output, 1 - serial output |
ansond | 0:aa970fb89a5c | 29 | |
ansond | 0:aa970fb89a5c | 30 | #define HRM_MIN 10 // min heartrate |
ansond | 0:aa970fb89a5c | 31 | #define HRM_MAX 250 // max heartrate |
ansond | 0:aa970fb89a5c | 32 | #define HRM_DEFAULT_INIT 70 // initial heartrate (buttons only, earbud will default differently) |
ansond | 0:aa970fb89a5c | 33 | |
ansond | 0:aa970fb89a5c | 34 | |
ansond | 0:aa970fb89a5c | 35 | // ********************* END Tunables for Techcon 2014 |
ansond | 0:aa970fb89a5c | 36 | |
ansond | 0:aa970fb89a5c | 37 | volatile uint16_t hrmCounter = HRM_DEFAULT_INIT; // initial heartrate |
ansond | 0:aa970fb89a5c | 38 | int oldhrmCounter = HRM_MAX+1; // tracker so that we only send when things change appropriately |
ansond | 0:aa970fb89a5c | 39 | |
ansond | 0:aa970fb89a5c | 40 | // Support for the Grove Ear-Clip Earbud |
ansond | 0:aa970fb89a5c | 41 | #define USE_EARBUD true // true - enable (pin P0_0), false - disable (default) |
ansond | 0:aa970fb89a5c | 42 | |
ansond | 0:aa970fb89a5c | 43 | // Globals |
ansond | 0:aa970fb89a5c | 44 | BLEDevice ble; |
ansond | 0:aa970fb89a5c | 45 | DigitalOut led1(LED1); |
ansond | 0:aa970fb89a5c | 46 | volatile bool connected = false; |
ansond | 0:aa970fb89a5c | 47 | |
ansond | 0:aa970fb89a5c | 48 | // Console allocation |
ansond | 0:aa970fb89a5c | 49 | #if ENABLE_CONSOLE |
ansond | 1:34a767241de5 | 50 | #include "BufferedSerial.h" |
ansond | 1:34a767241de5 | 51 | BufferedSerial pc(USBTX, USBRX); |
ansond | 0:aa970fb89a5c | 52 | #define LOG_CONSOLE(...) { pc.printf(__VA_ARGS__); } |
ansond | 0:aa970fb89a5c | 53 | #else |
ansond | 0:aa970fb89a5c | 54 | #define LOG_CONSOLE(...) |
ansond | 0:aa970fb89a5c | 55 | #endif |
ansond | 0:aa970fb89a5c | 56 | |
ansond | 0:aa970fb89a5c | 57 | // Earbud allocation (or button usage) |
ansond | 0:aa970fb89a5c | 58 | #if USE_EARBUD |
ansond | 0:aa970fb89a5c | 59 | #include "GroveEarbudSensor.h" |
ansond | 0:aa970fb89a5c | 60 | InterruptIn sensor(P0_0); |
ansond | 0:aa970fb89a5c | 61 | GroveEarbudSensor earbud(&sensor,&pc); |
ansond | 0:aa970fb89a5c | 62 | #else |
ansond | 0:aa970fb89a5c | 63 | DigitalIn up(BUTTON1); |
ansond | 0:aa970fb89a5c | 64 | DigitalIn down(BUTTON2); |
ansond | 0:aa970fb89a5c | 65 | #endif |
ansond | 0:aa970fb89a5c | 66 | |
ansond | 0:aa970fb89a5c | 67 | // BLE Globals |
ansond | 0:aa970fb89a5c | 68 | static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE}; |
ansond | 0:aa970fb89a5c | 69 | static volatile bool triggerSensorPolling = false; |
ansond | 0:aa970fb89a5c | 70 | |
ansond | 0:aa970fb89a5c | 71 | // Disconnection callback |
ansond | 0:aa970fb89a5c | 72 | void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) { |
ansond | 0:aa970fb89a5c | 73 | LOG_CONSOLE("Disconnected handle %u!\r\n", handle); |
ansond | 0:aa970fb89a5c | 74 | LOG_CONSOLE("Restarting the advertising process\r\n"); |
ansond | 0:aa970fb89a5c | 75 | ble.startAdvertising(); |
ansond | 0:aa970fb89a5c | 76 | connected = false; |
ansond | 0:aa970fb89a5c | 77 | oldhrmCounter = HRM_MAX+1; |
ansond | 0:aa970fb89a5c | 78 | #if USE_EARBUD |
ansond | 0:aa970fb89a5c | 79 | hrmCounter = HEARTRATE_OFF; |
ansond | 0:aa970fb89a5c | 80 | #else |
ansond | 0:aa970fb89a5c | 81 | hrmCounter = HRM_DEFAULT_INIT; |
ansond | 0:aa970fb89a5c | 82 | #endif |
ansond | 0:aa970fb89a5c | 83 | } |
ansond | 0:aa970fb89a5c | 84 | |
ansond | 0:aa970fb89a5c | 85 | // Connection callback |
ansond | 0:aa970fb89a5c | 86 | void connectionCallback(Gap::Handle_t handle, const Gap::ConnectionParams_t *parms) { |
ansond | 0:aa970fb89a5c | 87 | LOG_CONSOLE("Endpoint is connected!\r\n"); |
ansond | 0:aa970fb89a5c | 88 | connected = true; |
ansond | 0:aa970fb89a5c | 89 | } |
ansond | 0:aa970fb89a5c | 90 | |
ansond | 0:aa970fb89a5c | 91 | // Periodic callback |
ansond | 0:aa970fb89a5c | 92 | void periodicCallback(void) { |
ansond | 0:aa970fb89a5c | 93 | led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ |
ansond | 0:aa970fb89a5c | 94 | |
ansond | 0:aa970fb89a5c | 95 | /* Note that the periodicCallback() executes in interrupt context, so it is safer to do |
ansond | 0:aa970fb89a5c | 96 | * heavy-weight sensor polling from the main thread. */ |
ansond | 0:aa970fb89a5c | 97 | triggerSensorPolling = true; |
ansond | 0:aa970fb89a5c | 98 | } |
ansond | 0:aa970fb89a5c | 99 | |
ansond | 0:aa970fb89a5c | 100 | #if USE_EARBUD |
ansond | 0:aa970fb89a5c | 101 | // Heartrate callback (Earbud) |
ansond | 0:aa970fb89a5c | 102 | void heartrateCallback(float heartrate,void *data) { |
ansond | 0:aa970fb89a5c | 103 | hrmCounter = (int)heartrate; |
ansond | 0:aa970fb89a5c | 104 | } |
ansond | 0:aa970fb89a5c | 105 | #endif |
ansond | 0:aa970fb89a5c | 106 | |
ansond | 0:aa970fb89a5c | 107 | // main entry point |
ansond | 0:aa970fb89a5c | 108 | int main(void) { |
ansond | 0:aa970fb89a5c | 109 | bool do_loop = true; |
ansond | 0:aa970fb89a5c | 110 | led1 = 1; |
ansond | 0:aa970fb89a5c | 111 | Ticker ticker; |
ansond | 0:aa970fb89a5c | 112 | ticker.attach(periodicCallback, 1); |
ansond | 0:aa970fb89a5c | 113 | |
ansond | 0:aa970fb89a5c | 114 | #if USE_EARBUD |
ansond | 0:aa970fb89a5c | 115 | LOG_CONSOLE("\r\nmbed PoliceHRM (EARBUD) v1.0 (ARM Techcon 2014)\r\n"); |
ansond | 0:aa970fb89a5c | 116 | #else |
ansond | 0:aa970fb89a5c | 117 | LOG_CONSOLE("\r\nmbed PoliceHRM (BUTTON) v1.0 (ARM Techcon 2014)\r\n"); |
ansond | 0:aa970fb89a5c | 118 | #endif |
ansond | 0:aa970fb89a5c | 119 | ble.init(); |
ansond | 0:aa970fb89a5c | 120 | ble.onDisconnection(disconnectionCallback); |
ansond | 0:aa970fb89a5c | 121 | ble.onConnection(connectionCallback); |
ansond | 0:aa970fb89a5c | 122 | |
ansond | 0:aa970fb89a5c | 123 | /* setup advertising */ |
ansond | 0:aa970fb89a5c | 124 | LOG_CONSOLE("Starting BLE Advertising...\r\n"); |
ansond | 0:aa970fb89a5c | 125 | ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
ansond | 0:aa970fb89a5c | 126 | ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
ansond | 0:aa970fb89a5c | 127 | ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT); |
ansond | 0:aa970fb89a5c | 128 | ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
ansond | 0:aa970fb89a5c | 129 | ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
ansond | 0:aa970fb89a5c | 130 | ble.setAdvertisingInterval(1600); /* 1000ms; in multiples of 0.625ms. */ |
ansond | 0:aa970fb89a5c | 131 | ble.startAdvertising(); |
ansond | 0:aa970fb89a5c | 132 | |
ansond | 0:aa970fb89a5c | 133 | #if USE_EARBUD |
ansond | 0:aa970fb89a5c | 134 | // initialize the earbud |
ansond | 0:aa970fb89a5c | 135 | LOG_CONSOLE("Initializing Earbud...\r\n"); |
ansond | 0:aa970fb89a5c | 136 | hrmCounter = HEARTRATE_OFF; |
ansond | 0:aa970fb89a5c | 137 | earbud.registerCallback(heartrateCallback); |
ansond | 0:aa970fb89a5c | 138 | #endif |
ansond | 0:aa970fb89a5c | 139 | |
ansond | 0:aa970fb89a5c | 140 | // Start the HRM Service |
ansond | 0:aa970fb89a5c | 141 | LOG_CONSOLE("Starting HRM Service...\r\n"); |
ansond | 0:aa970fb89a5c | 142 | #if !USE_EARBUD |
ansond | 0:aa970fb89a5c | 143 | HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_WRIST); |
ansond | 0:aa970fb89a5c | 144 | #else |
ansond | 0:aa970fb89a5c | 145 | HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_EAR_LOBE); |
ansond | 0:aa970fb89a5c | 146 | #endif |
ansond | 0:aa970fb89a5c | 147 | |
ansond | 0:aa970fb89a5c | 148 | // Loop |
ansond | 0:aa970fb89a5c | 149 | LOG_CONSOLE("Entering main loop...\r\n"); |
ansond | 0:aa970fb89a5c | 150 | while (do_loop) { |
ansond | 0:aa970fb89a5c | 151 | if (triggerSensorPolling) { |
ansond | 0:aa970fb89a5c | 152 | triggerSensorPolling = false; |
ansond | 0:aa970fb89a5c | 153 | |
ansond | 0:aa970fb89a5c | 154 | #if !USE_EARBUD |
ansond | 0:aa970fb89a5c | 155 | // see if either button was pressed and adjust the heartrate accordingly |
ansond | 0:aa970fb89a5c | 156 | //LOG_CONSOLE("Updating HRM via button...\r\n"); |
ansond | 0:aa970fb89a5c | 157 | if (up) hrmCounter += HRM_INCREMENT; |
ansond | 0:aa970fb89a5c | 158 | if (down) hrmCounter -= HRM_INCREMENT; |
ansond | 0:aa970fb89a5c | 159 | |
ansond | 0:aa970fb89a5c | 160 | // boundary checking |
ansond | 0:aa970fb89a5c | 161 | if (hrmCounter < 0) hrmCounter = 0; |
ansond | 0:aa970fb89a5c | 162 | else if (hrmCounter < HRM_MIN) hrmCounter = HRM_MIN; |
ansond | 0:aa970fb89a5c | 163 | else if (hrmCounter > HRM_MAX) hrmCounter = HRM_MAX; |
ansond | 0:aa970fb89a5c | 164 | #endif |
ansond | 0:aa970fb89a5c | 165 | |
ansond | 0:aa970fb89a5c | 166 | // update the heartrate service if it has changed |
ansond | 0:aa970fb89a5c | 167 | if (hrmCounter != oldhrmCounter) { |
ansond | 0:aa970fb89a5c | 168 | LOG_CONSOLE("Updating HRM values...%d bpm\r\n",hrmCounter); |
ansond | 0:aa970fb89a5c | 169 | hrService.updateHeartRate(hrmCounter); |
ansond | 0:aa970fb89a5c | 170 | if (connected == true) oldhrmCounter = hrmCounter; |
ansond | 0:aa970fb89a5c | 171 | } |
ansond | 0:aa970fb89a5c | 172 | } else { |
ansond | 0:aa970fb89a5c | 173 | ble.waitForEvent(); |
ansond | 0:aa970fb89a5c | 174 | } |
ansond | 0:aa970fb89a5c | 175 | } |
ansond | 0:aa970fb89a5c | 176 | |
ansond | 0:aa970fb89a5c | 177 | // we have exited |
ansond | 0:aa970fb89a5c | 178 | LOG_CONSOLE("Application exiting...\r\n"); |
ansond | 0:aa970fb89a5c | 179 | } |