High level Bluetooth Low Energy API and radio abstraction layer
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Diff: ble/services/LinkLossService.h
- Revision:
- 1209:e3d4f8c7787b
- Parent:
- 1208:65474dc93927
--- a/ble/services/LinkLossService.h Wed Sep 14 14:18:00 2016 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,103 +0,0 @@ -/* mbed Microcontroller Library - * Copyright (c) 2006-2013 ARM Limited - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef __BLE_LINK_LOSS_SERVICE_H__ -#define __BLE_LINK_LOSS_SERVICE_H__ - -#include "ble/Gap.h" - -/** -* @class LinkLossService -* @brief This service defines behavior when a link is lost between two devices. -* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.link_loss.xml -* Alertness Level Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.alert_level.xml -*/ -class LinkLossService { -public: - enum AlertLevel_t { - NO_ALERT = 0, - MILD_ALERT = 1, - HIGH_ALERT = 2 - }; - - typedef void (* callback_t)(AlertLevel_t level); - - /** - * @param[ref] ble - * BLE object for the underlying controller. - */ - LinkLossService(BLE &bleIn, callback_t callbackIn, AlertLevel_t levelIn = NO_ALERT) : - ble(bleIn), - alertLevel(levelIn), - callback(callbackIn), - alertLevelChar(GattCharacteristic::UUID_ALERT_LEVEL_CHAR, reinterpret_cast<uint8_t *>(&alertLevel)) { - static bool serviceAdded = false; /* We should only ever add one LinkLoss service. */ - if (serviceAdded) { - return; - } - - GattCharacteristic *charTable[] = {&alertLevelChar}; - GattService linkLossService(GattService::UUID_LINK_LOSS_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *)); - - ble.gattServer().addService(linkLossService); - serviceAdded = true; - - ble.gap().onDisconnection(this, &LinkLossService::onDisconnectionFilter); - ble.gattServer().onDataWritten(this, &LinkLossService::onDataWritten); - } - - /** - * Update the callback. - */ - void setCallback(callback_t newCallback) { - callback = newCallback; - } - - /** - * Update alertness level. - */ - void setAlertLevel(AlertLevel_t newLevel) { - alertLevel = newLevel; - } - -protected: - /** - * This callback allows receiving updates to the AlertLevel characteristic. - * - * @param[in] params - * Information about the characterisitc being updated. - */ - virtual void onDataWritten(const GattWriteCallbackParams *params) { - if (params->handle == alertLevelChar.getValueHandle()) { - alertLevel = *reinterpret_cast<const AlertLevel_t *>(params->data); - } - } - - void onDisconnectionFilter(const Gap::DisconnectionCallbackParams_t *params) { - if (alertLevel != NO_ALERT) { - callback(alertLevel); - } - } - -protected: - BLE &ble; - AlertLevel_t alertLevel; - callback_t callback; - - ReadWriteGattCharacteristic<uint8_t> alertLevelChar; -}; - -#endif /* __BLE_LINK_LOSS_SERVICE_H__ */ \ No newline at end of file