Desmond Chen / Mbed OS mbed-os-example-ble-BatteryLevel_copy_copy

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source/main.cpp@2:18b05b3173a8, 2016-07-28 (annotated)

Committer:
mbed_official
Date:
Thu Jul 28 23:14:21 2016 +0100
Revision:
2:18b05b3173a8
Parent:
0:8113e6c77cd7
Child:
3:488ecd009a27
Merge branch 'master' of https://github.com/ARMmbed/mbed-os-example-ble





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

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 2:18b05b3173a8 1 /* mbed Microcontroller Library
mbed_official 2:18b05b3173a8 2 * Copyright (c) 2006-2014 ARM Limited
mbed_official 2:18b05b3173a8 3 *
mbed_official 2:18b05b3173a8 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 2:18b05b3173a8 5 * you may not use this file except in compliance with the License.
mbed_official 2:18b05b3173a8 6 * You may obtain a copy of the License at
mbed_official 2:18b05b3173a8 7 *
mbed_official 2:18b05b3173a8 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 2:18b05b3173a8 9 *
mbed_official 2:18b05b3173a8 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 2:18b05b3173a8 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 2:18b05b3173a8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 2:18b05b3173a8 13 * See the License for the specific language governing permissions and
mbed_official 2:18b05b3173a8 14 * limitations under the License.
mbed_official 2:18b05b3173a8 15 */
mbed_official 2:18b05b3173a8 16
mbed_official 2:18b05b3173a8 17 #include <mbed-events/events.h>
mbed_official 2:18b05b3173a8 18 #include <mbed.h>
mbed_official 2:18b05b3173a8 19 #include "ble/BLE.h"
mbed_official 2:18b05b3173a8 20 #include "ble/Gap.h"
mbed_official 2:18b05b3173a8 21 #include "ble/services/BatteryService.h"
mbed_official 2:18b05b3173a8 22
mbed_official 2:18b05b3173a8 23 DigitalOut led1(LED1, 1);
mbed_official 2:18b05b3173a8 24
mbed_official 2:18b05b3173a8 25 const static char DEVICE_NAME[] = "BATTERY";
mbed_official 2:18b05b3173a8 26 static const uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE};
mbed_official 2:18b05b3173a8 27
mbed_official 2:18b05b3173a8 28 static uint8_t batteryLevel = 50;
mbed_official 2:18b05b3173a8 29 static BatteryService* batteryServicePtr;
mbed_official 2:18b05b3173a8 30
mbed_official 2:18b05b3173a8 31 static EventQueue eventQueue(
mbed_official 2:18b05b3173a8 32 /* event count */ 16 * /* event size */ 32
mbed_official 2:18b05b3173a8 33 );
mbed_official 2:18b05b3173a8 34
mbed_official 2:18b05b3173a8 35 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
mbed_official 2:18b05b3173a8 36 {
mbed_official 2:18b05b3173a8 37 BLE::Instance().gap().startAdvertising();
mbed_official 2:18b05b3173a8 38 }
mbed_official 2:18b05b3173a8 39
mbed_official 2:18b05b3173a8 40 void updateSensorValue() {
mbed_official 2:18b05b3173a8 41 batteryLevel++;
mbed_official 2:18b05b3173a8 42 if (batteryLevel > 100) {
mbed_official 2:18b05b3173a8 43 batteryLevel = 20;
mbed_official 2:18b05b3173a8 44 }
mbed_official 2:18b05b3173a8 45
mbed_official 2:18b05b3173a8 46 batteryServicePtr->updateBatteryLevel(batteryLevel);
mbed_official 2:18b05b3173a8 47 }
mbed_official 2:18b05b3173a8 48
mbed_official 2:18b05b3173a8 49 void blinkCallback(void)
mbed_official 2:18b05b3173a8 50 {
mbed_official 2:18b05b3173a8 51 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
mbed_official 2:18b05b3173a8 52
mbed_official 2:18b05b3173a8 53 BLE &ble = BLE::Instance();
mbed_official 2:18b05b3173a8 54 if (ble.gap().getState().connected) {
mbed_official 2:18b05b3173a8 55 eventQueue.post(updateSensorValue);
mbed_official 2:18b05b3173a8 56 }
mbed_official 2:18b05b3173a8 57 }
mbed_official 2:18b05b3173a8 58
mbed_official 2:18b05b3173a8 59 /**
mbed_official 2:18b05b3173a8 60 * This function is called when the ble initialization process has failled
mbed_official 2:18b05b3173a8 61 */
mbed_official 2:18b05b3173a8 62 void onBleInitError(BLE &ble, ble_error_t error)
mbed_official 2:18b05b3173a8 63 {
mbed_official 2:18b05b3173a8 64 /* Initialization error handling should go here */
mbed_official 2:18b05b3173a8 65 }
mbed_official 2:18b05b3173a8 66
mbed_official 2:18b05b3173a8 67 /**
mbed_official 2:18b05b3173a8 68 * Callback triggered when the ble initialization process has finished
mbed_official 2:18b05b3173a8 69 */
mbed_official 2:18b05b3173a8 70 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
mbed_official 2:18b05b3173a8 71 {
mbed_official 2:18b05b3173a8 72 BLE& ble = params->ble;
mbed_official 2:18b05b3173a8 73 ble_error_t error = params->error;
mbed_official 2:18b05b3173a8 74
mbed_official 2:18b05b3173a8 75 if (error != BLE_ERROR_NONE) {
mbed_official 2:18b05b3173a8 76 /* In case of error, forward the error handling to onBleInitError */
mbed_official 2:18b05b3173a8 77 onBleInitError(ble, error);
mbed_official 2:18b05b3173a8 78 return;
mbed_official 2:18b05b3173a8 79 }
mbed_official 2:18b05b3173a8 80
mbed_official 2:18b05b3173a8 81 /* Ensure that it is the default instance of BLE */
mbed_official 2:18b05b3173a8 82 if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
mbed_official 2:18b05b3173a8 83 return;
mbed_official 2:18b05b3173a8 84 }
mbed_official 2:18b05b3173a8 85
mbed_official 2:18b05b3173a8 86 ble.gap().onDisconnection(disconnectionCallback);
mbed_official 2:18b05b3173a8 87
mbed_official 2:18b05b3173a8 88 /* Setup primary service */
mbed_official 2:18b05b3173a8 89 batteryServicePtr = new BatteryService(ble, batteryLevel);
mbed_official 2:18b05b3173a8 90
mbed_official 2:18b05b3173a8 91 /* Setup advertising */
mbed_official 2:18b05b3173a8 92 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
mbed_official 2:18b05b3173a8 93 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *) uuid16_list, sizeof(uuid16_list));
mbed_official 2:18b05b3173a8 94 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *) DEVICE_NAME, sizeof(DEVICE_NAME));
mbed_official 2:18b05b3173a8 95 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
mbed_official 2:18b05b3173a8 96 ble.gap().setAdvertisingInterval(1000); /* 1000ms */
mbed_official 2:18b05b3173a8 97 ble.gap().startAdvertising();
mbed_official 2:18b05b3173a8 98 }
mbed_official 2:18b05b3173a8 99
mbed_official 2:18b05b3173a8 100 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) {
mbed_official 2:18b05b3173a8 101 BLE &ble = BLE::Instance();
mbed_official 2:18b05b3173a8 102 eventQueue.post(Callback<void()>(&ble, &BLE::processEvents));
mbed_official 2:18b05b3173a8 103 }
mbed_official 2:18b05b3173a8 104
mbed_official 2:18b05b3173a8 105 int main()
mbed_official 2:18b05b3173a8 106 {
mbed_official 2:18b05b3173a8 107 eventQueue.post_every(500, blinkCallback);
mbed_official 2:18b05b3173a8 108
mbed_official 2:18b05b3173a8 109 BLE &ble = BLE::Instance();
mbed_official 2:18b05b3173a8 110 ble.onEventsToProcess(scheduleBleEventsProcessing);
mbed_official 2:18b05b3173a8 111 ble.init(bleInitComplete);
mbed_official 2:18b05b3173a8 112
mbed_official 2:18b05b3173a8 113 while (true) {
mbed_official 2:18b05b3173a8 114 eventQueue.dispatch();
mbed_official 2:18b05b3173a8 115 }
mbed_official 2:18b05b3173a8 116
mbed_official 2:18b05b3173a8 117 return 0;
mbed_official 2:18b05b3173a8 118 }