Technicus Spiriticus / Mbed 2 deprecated BLE_IoT_on_Wheels_Design_Challenge

We are making a bluetooth application for a vehicle.

Dependencies:   BLE_API X_NUCLEO_IDB0XA1 mbed

Fork of BLE_HeartRate_IDB0XA1 by ST

main.cpp@22:985657fc70c8, 2017-06-26 (annotated)

Committer:
Technicus
Date:
Mon Jun 26 16:30:16 2017 +0000
Revision:
22:985657fc70c8
Parent:
21:0e7c08f5386f
Child:
23:a31b178e2263
Initial Test

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
apalmieri 13:227a0149b677 21 DigitalOut led1(LED1, 1);
screamer 0:eb7f02ad28a7 22
screamer 0:eb7f02ad28a7 23 const static char DEVICE_NAME[] = "HRM1";
apalmieri 13:227a0149b677 24 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE};
apalmieri 13:227a0149b677 25
Technicus 22:985657fc70c8 26 uint8_t hrmCounter = 60; // init HRM to 60bps
screamer 0:eb7f02ad28a7 27 static volatile bool triggerSensorPolling = false;
screamer 0:eb7f02ad28a7 28
apalmieri 2:bc0c0d442a24 29 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
screamer 0:eb7f02ad28a7 30 {
apalmieri 13:227a0149b677 31 (void)params;
apalmieri 13:227a0149b677 32 BLE::Instance().gap().startAdvertising(); // restart advertising
screamer 0:eb7f02ad28a7 33 }
screamer 0:eb7f02ad28a7 34
screamer 0:eb7f02ad28a7 35 void periodicCallback(void)
screamer 0:eb7f02ad28a7 36 {
screamer 0:eb7f02ad28a7 37 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
screamer 0:eb7f02ad28a7 38 /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
screamer 0:eb7f02ad28a7 39 * heavy-weight sensor polling from the main thread. */
screamer 0:eb7f02ad28a7 40 triggerSensorPolling = true;
screamer 0:eb7f02ad28a7 41 }
screamer 0:eb7f02ad28a7 42
apalmieri 13:227a0149b677 43 void onBleInitError(BLE &ble, ble_error_t error)
apalmieri 13:227a0149b677 44 {
apalmieri 13:227a0149b677 45 (void)ble;
apalmieri 13:227a0149b677 46 (void)error;
apalmieri 13:227a0149b677 47 /* Initialization error handling should go here */
apalmieri 13:227a0149b677 48 }
apalmieri 13:227a0149b677 49
Technicus 22:985657fc70c8 50 void onDataWrittenCallback(const GattWriteCallbackParams *params) {
Technicus 22:985657fc70c8 51 hrmCounter = *(params->data);
Technicus 22:985657fc70c8 52 }
Technicus 22:985657fc70c8 53
apalmieri 13:227a0149b677 54 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
screamer 0:eb7f02ad28a7 55 {
apalmieri 13:227a0149b677 56 BLE& ble = params->ble;
apalmieri 13:227a0149b677 57 ble_error_t error = params->error;
screamer 0:eb7f02ad28a7 58
apalmieri 13:227a0149b677 59 if (error != BLE_ERROR_NONE) {
apalmieri 13:227a0149b677 60 onBleInitError(ble, error);
apalmieri 13:227a0149b677 61 return;
apalmieri 13:227a0149b677 62 }
apalmieri 13:227a0149b677 63
apalmieri 13:227a0149b677 64 if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
apalmieri 13:227a0149b677 65 return;
apalmieri 13:227a0149b677 66 }
apalmieri 13:227a0149b677 67
screamer 0:eb7f02ad28a7 68 ble.gap().onDisconnection(disconnectionCallback);
screamer 0:eb7f02ad28a7 69
Technicus 22:985657fc70c8 70 ble.gattServer().onDataWritten(onDataWrittenCallback);
screamer 0:eb7f02ad28a7 71 /* Setup primary service. */
screamer 0:eb7f02ad28a7 72 HeartRateService hrService(ble, hrmCounter, HeartRateService::LOCATION_FINGER);
screamer 0:eb7f02ad28a7 73
screamer 0:eb7f02ad28a7 74 /* Setup advertising. */
screamer 0:eb7f02ad28a7 75 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
screamer 0:eb7f02ad28a7 76 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
screamer 0:eb7f02ad28a7 77 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_HEART_RATE_SENSOR);
screamer 0:eb7f02ad28a7 78 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
screamer 0:eb7f02ad28a7 79 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
screamer 0:eb7f02ad28a7 80 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
screamer 0:eb7f02ad28a7 81 ble.gap().startAdvertising();
screamer 0:eb7f02ad28a7 82
screamer 0:eb7f02ad28a7 83 // infinite loop
apalmieri 13:227a0149b677 84 while (true) {
screamer 0:eb7f02ad28a7 85 // check for trigger from periodicCallback()
screamer 0:eb7f02ad28a7 86 if (triggerSensorPolling && ble.getGapState().connected) {
screamer 0:eb7f02ad28a7 87 triggerSensorPolling = false;
screamer 0:eb7f02ad28a7 88
screamer 0:eb7f02ad28a7 89 // Do blocking calls or whatever is necessary for sensor polling.
screamer 0:eb7f02ad28a7 90 // In our case, we simply update the HRM measurement.
screamer 0:eb7f02ad28a7 91 hrmCounter++;
screamer 0:eb7f02ad28a7 92
apalmieri 21:0e7c08f5386f 93 // 60 <= HRM bps <= 100
apalmieri 21:0e7c08f5386f 94 if (hrmCounter == 100) {
apalmieri 21:0e7c08f5386f 95 hrmCounter = 60;
screamer 0:eb7f02ad28a7 96 }
screamer 0:eb7f02ad28a7 97
screamer 0:eb7f02ad28a7 98 // update bps
screamer 0:eb7f02ad28a7 99 hrService.updateHeartRate(hrmCounter);
screamer 0:eb7f02ad28a7 100 } else {
screamer 0:eb7f02ad28a7 101 ble.waitForEvent(); // low power wait for event
screamer 0:eb7f02ad28a7 102 }
screamer 0:eb7f02ad28a7 103 }
screamer 0:eb7f02ad28a7 104 }
apalmieri 13:227a0149b677 105
apalmieri 13:227a0149b677 106 int main(void)
apalmieri 13:227a0149b677 107 {
apalmieri 13:227a0149b677 108 Ticker ticker;
apalmieri 13:227a0149b677 109 ticker.attach(periodicCallback, 1); // blink LED every second
apalmieri 13:227a0149b677 110
apalmieri 13:227a0149b677 111 BLE::Instance().init(bleInitComplete);
apalmieri 13:227a0149b677 112 }
apalmieri 14:f715c13eb84f 113