mbed-os-examples / Mbed OS mbed-os-example-ble-Thermometer

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source/main.cpp@81:921892507e54, 2019-09-19 (annotated)

Committer:
mbed_official
Date:
Thu Sep 19 18:01:32 2019 +0100
Revision:
81:921892507e54
Parent:
79:16042006e938 
Merge pull request #249 from apalmieriGH/master



Update readme for BLE_HeartRate and BLE_Thermometer

.

Commit copied from https://github.com/ARMmbed/mbed-os-example-ble

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 2:cc8349878a7d 1 /* mbed Microcontroller Library
mbed_official 2:cc8349878a7d 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 2:cc8349878a7d 3 *
mbed_official 2:cc8349878a7d 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 2:cc8349878a7d 5 * you may not use this file except in compliance with the License.
mbed_official 2:cc8349878a7d 6 * You may obtain a copy of the License at
mbed_official 2:cc8349878a7d 7 *
mbed_official 2:cc8349878a7d 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 2:cc8349878a7d 9 *
mbed_official 2:cc8349878a7d 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 2:cc8349878a7d 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 2:cc8349878a7d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 2:cc8349878a7d 13 * See the License for the specific language governing permissions and
mbed_official 2:cc8349878a7d 14 * limitations under the License.
mbed_official 2:cc8349878a7d 15 */
mbed_official 2:cc8349878a7d 16
mbed_official 11:4e356c89ad66 17 #include <events/mbed_events.h>
mbed_official 2:cc8349878a7d 18 #include "mbed.h"
mbed_official 2:cc8349878a7d 19 #include "ble/BLE.h"
mbed_official 2:cc8349878a7d 20 #include "ble/services/HealthThermometerService.h"
mbed_official 74:b082fa6d75eb 21 #include "pretty_printer.h"
mbed_official 2:cc8349878a7d 22
mbed_official 2:cc8349878a7d 23 DigitalOut led1(LED1, 1);
mbed_official 2:cc8349878a7d 24
mbed_official 74:b082fa6d75eb 25 const static char DEVICE_NAME[] = "Therm";
mbed_official 2:cc8349878a7d 26
mbed_official 74:b082fa6d75eb 27 static events::EventQueue event_queue(/* event count */ 16 * EVENTS_EVENT_SIZE);
mbed_official 2:cc8349878a7d 28
mbed_official 79:16042006e938 29 class ThermometerDemo : ble::Gap::EventHandler {
mbed_official 74:b082fa6d75eb 30 public:
mbed_official 79:16042006e938 31 ThermometerDemo(BLE &ble, events::EventQueue &event_queue) :
mbed_official 74:b082fa6d75eb 32 _ble(ble),
mbed_official 74:b082fa6d75eb 33 _event_queue(event_queue),
mbed_official 79:16042006e938 34 _sensor_event_id(0),
mbed_official 74:b082fa6d75eb 35 _thermometer_uuid(GattService::UUID_HEALTH_THERMOMETER_SERVICE),
mbed_official 79:16042006e938 36 _current_temperature(39.6f),
mbed_official 74:b082fa6d75eb 37 _thermometer_service(NULL),
mbed_official 74:b082fa6d75eb 38 _adv_data_builder(_adv_buffer) { }
mbed_official 2:cc8349878a7d 39
mbed_official 74:b082fa6d75eb 40 void start() {
mbed_official 74:b082fa6d75eb 41 _ble.gap().setEventHandler(this);
mbed_official 74:b082fa6d75eb 42
mbed_official 79:16042006e938 43 _ble.init(this, &ThermometerDemo::on_init_complete);
mbed_official 2:cc8349878a7d 44
mbed_official 79:16042006e938 45 _event_queue.call_every(500, this, &ThermometerDemo::blink);
mbed_official 74:b082fa6d75eb 46
mbed_official 74:b082fa6d75eb 47 _event_queue.dispatch_forever();
mbed_official 2:cc8349878a7d 48 }
mbed_official 2:cc8349878a7d 49
mbed_official 74:b082fa6d75eb 50 private:
mbed_official 74:b082fa6d75eb 51 /** Callback triggered when the ble initialization process has finished */
mbed_official 74:b082fa6d75eb 52 void on_init_complete(BLE::InitializationCompleteCallbackContext *params) {
mbed_official 74:b082fa6d75eb 53 if (params->error != BLE_ERROR_NONE) {
mbed_official 74:b082fa6d75eb 54 print_error(params->error, "Ble initialization failed.");
mbed_official 74:b082fa6d75eb 55 return;
mbed_official 74:b082fa6d75eb 56 }
mbed_official 44:10b42e19e84b 57
mbed_official 74:b082fa6d75eb 58 print_mac_address();
mbed_official 2:cc8349878a7d 59
mbed_official 74:b082fa6d75eb 60 /* Setup primary service. */
mbed_official 74:b082fa6d75eb 61 _thermometer_service = new HealthThermometerService(_ble, _current_temperature, HealthThermometerService::LOCATION_EAR);
mbed_official 74:b082fa6d75eb 62
mbed_official 74:b082fa6d75eb 63 start_advertising();
mbed_official 2:cc8349878a7d 64 }
mbed_official 2:cc8349878a7d 65
mbed_official 74:b082fa6d75eb 66 void start_advertising() {
mbed_official 74:b082fa6d75eb 67 /* Create advertising parameters and payload */
mbed_official 74:b082fa6d75eb 68
mbed_official 74:b082fa6d75eb 69 ble::AdvertisingParameters adv_parameters(
mbed_official 74:b082fa6d75eb 70 ble::advertising_type_t::CONNECTABLE_UNDIRECTED,
mbed_official 74:b082fa6d75eb 71 ble::adv_interval_t(ble::millisecond_t(1000))
mbed_official 74:b082fa6d75eb 72 );
mbed_official 74:b082fa6d75eb 73
mbed_official 74:b082fa6d75eb 74 _adv_data_builder.setFlags();
mbed_official 74:b082fa6d75eb 75 _adv_data_builder.setLocalServiceList(mbed::make_Span(&_thermometer_uuid, 1));
mbed_official 74:b082fa6d75eb 76 _adv_data_builder.setAppearance(ble::adv_data_appearance_t::THERMOMETER_EAR);
mbed_official 74:b082fa6d75eb 77 _adv_data_builder.setName(DEVICE_NAME);
mbed_official 74:b082fa6d75eb 78
mbed_official 74:b082fa6d75eb 79 /* Setup advertising */
mbed_official 74:b082fa6d75eb 80
mbed_official 74:b082fa6d75eb 81 ble_error_t error = _ble.gap().setAdvertisingParameters(
mbed_official 74:b082fa6d75eb 82 ble::LEGACY_ADVERTISING_HANDLE,
mbed_official 74:b082fa6d75eb 83 adv_parameters
mbed_official 74:b082fa6d75eb 84 );
mbed_official 74:b082fa6d75eb 85
mbed_official 74:b082fa6d75eb 86 if (error) {
mbed_official 74:b082fa6d75eb 87 print_error(error, "_ble.gap().setAdvertisingParameters() failed");
mbed_official 74:b082fa6d75eb 88 return;
mbed_official 74:b082fa6d75eb 89 }
mbed_official 74:b082fa6d75eb 90
mbed_official 74:b082fa6d75eb 91 error = _ble.gap().setAdvertisingPayload(
mbed_official 74:b082fa6d75eb 92 ble::LEGACY_ADVERTISING_HANDLE,
mbed_official 74:b082fa6d75eb 93 _adv_data_builder.getAdvertisingData()
mbed_official 74:b082fa6d75eb 94 );
mbed_official 74:b082fa6d75eb 95
mbed_official 74:b082fa6d75eb 96 if (error) {
mbed_official 74:b082fa6d75eb 97 print_error(error, "_ble.gap().setAdvertisingPayload() failed");
mbed_official 74:b082fa6d75eb 98 return;
mbed_official 74:b082fa6d75eb 99 }
mbed_official 74:b082fa6d75eb 100
mbed_official 74:b082fa6d75eb 101 /* Start advertising */
mbed_official 74:b082fa6d75eb 102
mbed_official 74:b082fa6d75eb 103 error = _ble.gap().startAdvertising(ble::LEGACY_ADVERTISING_HANDLE);
mbed_official 74:b082fa6d75eb 104
mbed_official 74:b082fa6d75eb 105 if (error) {
mbed_official 74:b082fa6d75eb 106 print_error(error, "_ble.gap().startAdvertising() failed");
mbed_official 74:b082fa6d75eb 107 return;
mbed_official 74:b082fa6d75eb 108 }
mbed_official 2:cc8349878a7d 109 }
mbed_official 2:cc8349878a7d 110
mbed_official 74:b082fa6d75eb 111 void update_sensor_value() {
mbed_official 79:16042006e938 112 _current_temperature = (_current_temperature + 0.1f > 43.0f) ? 39.6f : _current_temperature + 0.1f;
mbed_official 79:16042006e938 113 _thermometer_service->updateTemperature(_current_temperature);
mbed_official 74:b082fa6d75eb 114 }
mbed_official 2:cc8349878a7d 115
mbed_official 74:b082fa6d75eb 116 void blink(void) {
mbed_official 74:b082fa6d75eb 117 led1 = !led1;
mbed_official 74:b082fa6d75eb 118 }
mbed_official 74:b082fa6d75eb 119
mbed_official 74:b082fa6d75eb 120 private:
mbed_official 74:b082fa6d75eb 121 /* Event handler */
mbed_official 2:cc8349878a7d 122
mbed_official 79:16042006e938 123 virtual void onDisconnectionComplete(const ble::DisconnectionCompleteEvent&) {
mbed_official 79:16042006e938 124 _event_queue.cancel(_sensor_event_id);
mbed_official 74:b082fa6d75eb 125 _ble.gap().startAdvertising(ble::LEGACY_ADVERTISING_HANDLE);
mbed_official 74:b082fa6d75eb 126 }
mbed_official 74:b082fa6d75eb 127
mbed_official 79:16042006e938 128 virtual void onConnectionComplete(const ble::ConnectionCompleteEvent &event) {
mbed_official 79:16042006e938 129 if (event.getStatus() == BLE_ERROR_NONE) {
mbed_official 79:16042006e938 130 _sensor_event_id = _event_queue.call_every(1000, this, &ThermometerDemo::update_sensor_value);
mbed_official 79:16042006e938 131 }
mbed_official 79:16042006e938 132 }
mbed_official 79:16042006e938 133
mbed_official 74:b082fa6d75eb 134 private:
mbed_official 74:b082fa6d75eb 135 BLE &_ble;
mbed_official 74:b082fa6d75eb 136 events::EventQueue &_event_queue;
mbed_official 74:b082fa6d75eb 137
mbed_official 79:16042006e938 138 int _sensor_event_id;
mbed_official 79:16042006e938 139
mbed_official 74:b082fa6d75eb 140 UUID _thermometer_uuid;
mbed_official 44:10b42e19e84b 141
mbed_official 79:16042006e938 142 float _current_temperature;
mbed_official 74:b082fa6d75eb 143 HealthThermometerService *_thermometer_service;
mbed_official 2:cc8349878a7d 144
mbed_official 74:b082fa6d75eb 145 uint8_t _adv_buffer[ble::LEGACY_ADVERTISING_MAX_SIZE];
mbed_official 74:b082fa6d75eb 146 ble::AdvertisingDataBuilder _adv_data_builder;
mbed_official 74:b082fa6d75eb 147 };
mbed_official 74:b082fa6d75eb 148
mbed_official 74:b082fa6d75eb 149 /** Schedule processing of events from the BLE middleware in the event queue. */
mbed_official 74:b082fa6d75eb 150 void schedule_ble_events(BLE::OnEventsToProcessCallbackContext *context) {
mbed_official 74:b082fa6d75eb 151 event_queue.call(Callback<void()>(&context->ble, &BLE::processEvents));
mbed_official 2:cc8349878a7d 152 }
mbed_official 2:cc8349878a7d 153
mbed_official 2:cc8349878a7d 154 int main()
mbed_official 2:cc8349878a7d 155 {
mbed_official 74:b082fa6d75eb 156 BLE &ble = BLE::Instance();
mbed_official 74:b082fa6d75eb 157 ble.onEventsToProcess(schedule_ble_events);
mbed_official 2:cc8349878a7d 158
mbed_official 79:16042006e938 159 ThermometerDemo demo(ble, event_queue);
mbed_official 74:b082fa6d75eb 160 demo.start();
mbed_official 2:cc8349878a7d 161
mbed_official 2:cc8349878a7d 162 return 0;
mbed_official 2:cc8349878a7d 163 }