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Dependencies:   mbed

mbed-os-example-ble-master/BLE_Thermometer/source/main.cpp@0:599bc564478b, 2018-06-29 (annotated)

Committer:
bpd227
Date:
Fri Jun 29 01:19:08 2018 +0000
Revision:
0:599bc564478b
first

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bpd227 0:599bc564478b 1 /* mbed Microcontroller Library
bpd227 0:599bc564478b 2 * Copyright (c) 2006-2013 ARM Limited
bpd227 0:599bc564478b 3 *
bpd227 0:599bc564478b 4 * Licensed under the Apache License, Version 2.0 (the "License");
bpd227 0:599bc564478b 5 * you may not use this file except in compliance with the License.
bpd227 0:599bc564478b 6 * You may obtain a copy of the License at
bpd227 0:599bc564478b 7 *
bpd227 0:599bc564478b 8 * http://www.apache.org/licenses/LICENSE-2.0
bpd227 0:599bc564478b 9 *
bpd227 0:599bc564478b 10 * Unless required by applicable law or agreed to in writing, software
bpd227 0:599bc564478b 11 * distributed under the License is distributed on an "AS IS" BASIS,
bpd227 0:599bc564478b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bpd227 0:599bc564478b 13 * See the License for the specific language governing permissions and
bpd227 0:599bc564478b 14 * limitations under the License.
bpd227 0:599bc564478b 15 */
bpd227 0:599bc564478b 16
bpd227 0:599bc564478b 17 #include <events/mbed_events.h>
bpd227 0:599bc564478b 18 #include "mbed.h"
bpd227 0:599bc564478b 19 #include "ble/BLE.h"
bpd227 0:599bc564478b 20 #include "ble/services/HealthThermometerService.h"
bpd227 0:599bc564478b 21
bpd227 0:599bc564478b 22 DigitalOut led1(LED1, 1);
bpd227 0:599bc564478b 23
bpd227 0:599bc564478b 24 const static char DEVICE_NAME[] = "Therm";
bpd227 0:599bc564478b 25 static const uint16_t uuid16_list[] = {GattService::UUID_HEALTH_THERMOMETER_SERVICE};
bpd227 0:599bc564478b 26
bpd227 0:599bc564478b 27 static float currentTemperature = 39.6;
bpd227 0:599bc564478b 28 static HealthThermometerService *thermometerServicePtr;
bpd227 0:599bc564478b 29
bpd227 0:599bc564478b 30 static EventQueue eventQueue(/* event count */ 16 * EVENTS_EVENT_SIZE);
bpd227 0:599bc564478b 31
bpd227 0:599bc564478b 32 /* Restart Advertising on disconnection*/
bpd227 0:599bc564478b 33 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *)
bpd227 0:599bc564478b 34 {
bpd227 0:599bc564478b 35 BLE::Instance().gap().startAdvertising();
bpd227 0:599bc564478b 36 }
bpd227 0:599bc564478b 37
bpd227 0:599bc564478b 38 void updateSensorValue(void) {
bpd227 0:599bc564478b 39 /* Do blocking calls or whatever is necessary for sensor polling.
bpd227 0:599bc564478b 40 In our case, we simply update the Temperature measurement. */
bpd227 0:599bc564478b 41 currentTemperature = (currentTemperature + 0.1 > 43.0) ? 39.6 : currentTemperature + 0.1;
bpd227 0:599bc564478b 42 thermometerServicePtr->updateTemperature(currentTemperature);
bpd227 0:599bc564478b 43 }
bpd227 0:599bc564478b 44
bpd227 0:599bc564478b 45 void periodicCallback(void)
bpd227 0:599bc564478b 46 {
bpd227 0:599bc564478b 47 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
bpd227 0:599bc564478b 48
bpd227 0:599bc564478b 49 if (BLE::Instance().gap().getState().connected) {
bpd227 0:599bc564478b 50 eventQueue.call(updateSensorValue);
bpd227 0:599bc564478b 51 }
bpd227 0:599bc564478b 52 }
bpd227 0:599bc564478b 53
bpd227 0:599bc564478b 54 void onBleInitError(BLE &ble, ble_error_t error)
bpd227 0:599bc564478b 55 {
bpd227 0:599bc564478b 56 /* Initialization error handling should go here */
bpd227 0:599bc564478b 57 }
bpd227 0:599bc564478b 58
bpd227 0:599bc564478b 59 void printMacAddress()
bpd227 0:599bc564478b 60 {
bpd227 0:599bc564478b 61 /* Print out device MAC address to the console*/
bpd227 0:599bc564478b 62 Gap::AddressType_t addr_type;
bpd227 0:599bc564478b 63 Gap::Address_t address;
bpd227 0:599bc564478b 64 BLE::Instance().gap().getAddress(&addr_type, address);
bpd227 0:599bc564478b 65 printf("DEVICE MAC ADDRESS: ");
bpd227 0:599bc564478b 66 for (int i = 5; i >= 1; i--){
bpd227 0:599bc564478b 67 printf("%02x:", address[i]);
bpd227 0:599bc564478b 68 }
bpd227 0:599bc564478b 69 printf("%02x\r\n", address[0]);
bpd227 0:599bc564478b 70 }
bpd227 0:599bc564478b 71
bpd227 0:599bc564478b 72 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
bpd227 0:599bc564478b 73 {
bpd227 0:599bc564478b 74 BLE& ble = params->ble;
bpd227 0:599bc564478b 75 ble_error_t error = params->error;
bpd227 0:599bc564478b 76
bpd227 0:599bc564478b 77 if (error != BLE_ERROR_NONE) {
bpd227 0:599bc564478b 78 onBleInitError(ble, error);
bpd227 0:599bc564478b 79 return;
bpd227 0:599bc564478b 80 }
bpd227 0:599bc564478b 81
bpd227 0:599bc564478b 82 if (ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
bpd227 0:599bc564478b 83 return;
bpd227 0:599bc564478b 84 }
bpd227 0:599bc564478b 85
bpd227 0:599bc564478b 86 ble.gap().onDisconnection(disconnectionCallback);
bpd227 0:599bc564478b 87
bpd227 0:599bc564478b 88 /* Setup primary service. */
bpd227 0:599bc564478b 89 thermometerServicePtr = new HealthThermometerService(ble, currentTemperature, HealthThermometerService::LOCATION_EAR);
bpd227 0:599bc564478b 90
bpd227 0:599bc564478b 91 /* setup advertising */
bpd227 0:599bc564478b 92 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
bpd227 0:599bc564478b 93 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
bpd227 0:599bc564478b 94 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::THERMOMETER_EAR);
bpd227 0:599bc564478b 95 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
bpd227 0:599bc564478b 96 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
bpd227 0:599bc564478b 97 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
bpd227 0:599bc564478b 98 ble.gap().startAdvertising();
bpd227 0:599bc564478b 99
bpd227 0:599bc564478b 100 printMacAddress();
bpd227 0:599bc564478b 101 }
bpd227 0:599bc564478b 102
bpd227 0:599bc564478b 103 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
bpd227 0:599bc564478b 104 BLE &ble = BLE::Instance();
bpd227 0:599bc564478b 105 eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
bpd227 0:599bc564478b 106 }
bpd227 0:599bc564478b 107
bpd227 0:599bc564478b 108 int main()
bpd227 0:599bc564478b 109 {
bpd227 0:599bc564478b 110 eventQueue.call_every(500, periodicCallback);
bpd227 0:599bc564478b 111
bpd227 0:599bc564478b 112 BLE &ble = BLE::Instance();
bpd227 0:599bc564478b 113 ble.onEventsToProcess(scheduleBleEventsProcessing);
bpd227 0:599bc564478b 114 ble.init(bleInitComplete);
bpd227 0:599bc564478b 115
bpd227 0:599bc564478b 116 eventQueue.dispatch_forever();
bpd227 0:599bc564478b 117
bpd227 0:599bc564478b 118 return 0;
bpd227 0:599bc564478b 119 }