Bluetooth Low Energy / BLE_API

High level Bluetooth Low Energy API and radio abstraction layer

Dependents:   BLE_ANCS_SDAPI BLE_temperature BLE_HeartRate BLE_ANCS_SDAPI_IRC ... more

Overview

The BLE_API is a high level abstraction for using Bluetooth Low Energy on multiple platforms. For details and examples using the BLE_API please see the BLE_API Summary Page. Or click on the API Documentation tab above.

Supported Services

Supported services can be found in the BLE_API/services folder.

ble/services/URIBeaconConfigService.h@727:1a1f5c5aedfe, 2015-07-06 (annotated)

Committer:
rgrover1
Date:
Mon Jul 06 10:10:34 2015 +0100
Revision:
727:1a1f5c5aedfe
Parent:
723:71507679c9b2
Child:
728:997ba5e7b3b6
Synchronized with git rev 854fd111

Author: James Crosby

use mbed-classic to build (this will probably be a target-dependendency in the future)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 712:b04b5db36865 1 /* mbed Microcontroller Library
rgrover1 712:b04b5db36865 2 * Copyright (c) 2006-2013 ARM Limited
rgrover1 712:b04b5db36865 3 *
rgrover1 712:b04b5db36865 4 * Licensed under the Apache License, Version 2.0 (the "License");
rgrover1 712:b04b5db36865 5 * you may not use this file except in compliance with the License.
rgrover1 712:b04b5db36865 6 * You may obtain a copy of the License at
rgrover1 712:b04b5db36865 7 *
rgrover1 712:b04b5db36865 8 * http://www.apache.org/licenses/LICENSE-2.0
rgrover1 712:b04b5db36865 9 *
rgrover1 712:b04b5db36865 10 * Unless required by applicable law or agreed to in writing, software
rgrover1 712:b04b5db36865 11 * distributed under the License is distributed on an "AS IS" BASIS,
rgrover1 712:b04b5db36865 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rgrover1 712:b04b5db36865 13 * See the License for the specific language governing permissions and
rgrover1 712:b04b5db36865 14 * limitations under the License.
rgrover1 712:b04b5db36865 15 */
rgrover1 712:b04b5db36865 16
rgrover1 712:b04b5db36865 17 #ifndef SERVICES_URIBEACONCONFIGSERVICE_H_
rgrover1 712:b04b5db36865 18 #define SERVICES_URIBEACONCONFIGSERVICE_H_
rgrover1 712:b04b5db36865 19
rgrover1 712:b04b5db36865 20 #include "ble/BLE.h"
rgrover1 712:b04b5db36865 21 #include "mbed.h"
rgrover1 712:b04b5db36865 22
rgrover1 712:b04b5db36865 23 extern const uint8_t UUID_URI_BEACON_SERVICE[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 24 extern const uint8_t UUID_LOCK_STATE_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 25 extern const uint8_t UUID_LOCK_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 26 extern const uint8_t UUID_UNLOCK_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 27 extern const uint8_t UUID_URI_DATA_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 28 extern const uint8_t UUID_FLAGS_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 29 extern const uint8_t UUID_ADV_POWER_LEVELS_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 30 extern const uint8_t UUID_TX_POWER_MODE_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 31 extern const uint8_t UUID_BEACON_PERIOD_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 32 extern const uint8_t UUID_RESET_CHAR[UUID::LENGTH_OF_LONG_UUID];
rgrover1 712:b04b5db36865 33
rgrover1 712:b04b5db36865 34 extern const uint8_t BEACON_UUID[sizeof(UUID::ShortUUIDBytes_t)];
rgrover1 712:b04b5db36865 35
rgrover1 712:b04b5db36865 36 /**
rgrover1 712:b04b5db36865 37 * @class URIBeaconConfigService
rgrover1 712:b04b5db36865 38 * @brief UriBeacon Configuration Service. Can be used to set URL, adjust power levels, and set flags.
rgrover1 712:b04b5db36865 39 * See http://uribeacon.org
rgrover1 712:b04b5db36865 40 *
rgrover1 712:b04b5db36865 41 */
rgrover1 712:b04b5db36865 42 class URIBeaconConfigService {
rgrover1 712:b04b5db36865 43 public:
rgrover1 712:b04b5db36865 44 /**
rgrover1 712:b04b5db36865 45 * @brief Transmission Power Modes for UriBeacon
rgrover1 712:b04b5db36865 46 */
rgrover1 712:b04b5db36865 47 static const uint8_t TX_POWER_MODE_LOWEST = 0; /*!< Lowest TX power mode */
rgrover1 712:b04b5db36865 48 static const uint8_t TX_POWER_MODE_LOW = 1; /*!< Low TX power mode */
rgrover1 712:b04b5db36865 49 static const uint8_t TX_POWER_MODE_MEDIUM = 2; /*!< Medium TX power mode */
rgrover1 712:b04b5db36865 50 static const uint8_t TX_POWER_MODE_HIGH = 3; /*!< High TX power mode */
rgrover1 712:b04b5db36865 51 static const unsigned NUM_POWER_MODES = 4; /*!< Number of Power Modes defined */
rgrover1 712:b04b5db36865 52
rgrover1 712:b04b5db36865 53 static const int ADVERTISING_INTERVAL_MSEC = 1000; // Advertising interval for config service.
rgrover1 712:b04b5db36865 54 static const int SERVICE_DATA_MAX = 31; // Maximum size of service data in ADV packets
rgrover1 712:b04b5db36865 55
rgrover1 712:b04b5db36865 56 typedef uint8_t Lock_t[16]; /* 128 bits */
rgrover1 712:b04b5db36865 57 typedef int8_t PowerLevels_t[NUM_POWER_MODES];
rgrover1 712:b04b5db36865 58
rgrover1 712:b04b5db36865 59 static const int URI_DATA_MAX = 18;
rgrover1 712:b04b5db36865 60 typedef uint8_t UriData_t[URI_DATA_MAX];
rgrover1 712:b04b5db36865 61
rgrover1 712:b04b5db36865 62 struct Params_t {
rgrover1 712:b04b5db36865 63 Lock_t lock;
rgrover1 712:b04b5db36865 64 uint8_t uriDataLength;
rgrover1 712:b04b5db36865 65 UriData_t uriData;
rgrover1 712:b04b5db36865 66 uint8_t flags;
rgrover1 712:b04b5db36865 67 PowerLevels_t advPowerLevels; // Current value of AdvertisedPowerLevels
rgrover1 712:b04b5db36865 68 uint8_t txPowerMode; // Firmware power levels used with setTxPower()
rgrover1 712:b04b5db36865 69 uint16_t beaconPeriod;
rgrover1 712:b04b5db36865 70 };
rgrover1 712:b04b5db36865 71
rgrover1 712:b04b5db36865 72 /**
rgrover1 712:b04b5db36865 73 * @param[ref] ble
rgrover1 712:b04b5db36865 74 * BLE object for the underlying controller.
rgrover1 712:b04b5db36865 75 * @param[in/out] paramsIn
rgrover1 712:b04b5db36865 76 * Reference to application-visible beacon state, loaded
rgrover1 712:b04b5db36865 77 * from persistent storage at startup.
rgrover1 712:b04b5db36865 78 * @paramsP[in] resetToDefaultsFlag
rgrover1 712:b04b5db36865 79 * Applies to the state of the 'paramsIn' parameter.
rgrover1 712:b04b5db36865 80 * If true, it indicates that paramsIn is potentially
rgrover1 712:b04b5db36865 81 * un-initialized, and default values should be used
rgrover1 712:b04b5db36865 82 * instead. Otherwise, paramsIn overrides the defaults.
rgrover1 712:b04b5db36865 83 * @param[in] defaultUriDataIn
rgrover1 712:b04b5db36865 84 * Default un-encoded URI; applies only if the resetToDefaultsFlag is true.
rgrover1 712:b04b5db36865 85 * @param[in] defaultAdvPowerLevelsIn
rgrover1 712:b04b5db36865 86 * Default power-levels array; applies only if the resetToDefaultsFlag is true.
rgrover1 712:b04b5db36865 87 */
rgrover1 712:b04b5db36865 88 URIBeaconConfigService(BLE &bleIn,
rgrover1 712:b04b5db36865 89 Params_t &paramsIn,
rgrover1 712:b04b5db36865 90 bool resetToDefaultsFlag,
rgrover1 712:b04b5db36865 91 const char *defaultURIDataIn,
rgrover1 712:b04b5db36865 92 PowerLevels_t &defaultAdvPowerLevelsIn) :
rgrover1 712:b04b5db36865 93 ble(bleIn),
rgrover1 712:b04b5db36865 94 params(paramsIn),
rgrover1 712:b04b5db36865 95 defaultUriDataLength(),
rgrover1 712:b04b5db36865 96 defaultUriData(),
rgrover1 712:b04b5db36865 97 defaultAdvPowerLevels(defaultAdvPowerLevelsIn),
rgrover1 712:b04b5db36865 98 initSucceeded(false),
rgrover1 712:b04b5db36865 99 resetFlag(),
rgrover1 712:b04b5db36865 100 lockedStateChar(UUID_LOCK_STATE_CHAR, &lockedState),
rgrover1 712:b04b5db36865 101 lockChar(UUID_LOCK_CHAR, &params.lock),
rgrover1 712:b04b5db36865 102 uriDataChar(UUID_URI_DATA_CHAR, params.uriData, 0, URI_DATA_MAX,
rgrover1 712:b04b5db36865 103 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
rgrover1 712:b04b5db36865 104 unlockChar(UUID_UNLOCK_CHAR, &params.lock),
rgrover1 712:b04b5db36865 105 flagsChar(UUID_FLAGS_CHAR, &params.flags),
rgrover1 712:b04b5db36865 106 advPowerLevelsChar(UUID_ADV_POWER_LEVELS_CHAR, &params.advPowerLevels),
rgrover1 712:b04b5db36865 107 txPowerModeChar(UUID_TX_POWER_MODE_CHAR, &params.txPowerMode),
rgrover1 712:b04b5db36865 108 beaconPeriodChar(UUID_BEACON_PERIOD_CHAR, &params.beaconPeriod),
rgrover1 712:b04b5db36865 109 resetChar(UUID_RESET_CHAR, &resetFlag) {
rgrover1 712:b04b5db36865 110
rgrover1 712:b04b5db36865 111 encodeURI(defaultURIDataIn, defaultUriData, defaultUriDataLength);
rgrover1 712:b04b5db36865 112 if (defaultUriDataLength > URI_DATA_MAX) {
rgrover1 712:b04b5db36865 113 return;
rgrover1 712:b04b5db36865 114 }
rgrover1 712:b04b5db36865 115
rgrover1 712:b04b5db36865 116 if (!resetToDefaultsFlag && (params.uriDataLength > URI_DATA_MAX)) {
rgrover1 712:b04b5db36865 117 resetToDefaultsFlag = true;
rgrover1 712:b04b5db36865 118 }
rgrover1 712:b04b5db36865 119 if (resetToDefaultsFlag) {
rgrover1 712:b04b5db36865 120 resetToDefaults();
rgrover1 712:b04b5db36865 121 } else {
rgrover1 712:b04b5db36865 122 updateCharacteristicValues();
rgrover1 712:b04b5db36865 123 }
rgrover1 712:b04b5db36865 124
rgrover1 712:b04b5db36865 125 lockedState = isLocked();
rgrover1 712:b04b5db36865 126
rgrover1 712:b04b5db36865 127 lockChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::lockAuthorizationCallback);
rgrover1 712:b04b5db36865 128 unlockChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::unlockAuthorizationCallback);
rgrover1 712:b04b5db36865 129 uriDataChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::uriDataWriteAuthorizationCallback);
rgrover1 712:b04b5db36865 130 flagsChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::basicAuthorizationCallback<uint8_t>);
rgrover1 712:b04b5db36865 131 advPowerLevelsChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::basicAuthorizationCallback<PowerLevels_t>);
rgrover1 712:b04b5db36865 132 txPowerModeChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::powerModeAuthorizationCallback);
rgrover1 712:b04b5db36865 133 beaconPeriodChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::basicAuthorizationCallback<uint16_t>);
rgrover1 712:b04b5db36865 134 resetChar.setWriteAuthorizationCallback(this, &URIBeaconConfigService::basicAuthorizationCallback<uint8_t>);
rgrover1 712:b04b5db36865 135
rgrover1 712:b04b5db36865 136 static GattCharacteristic *charTable[] = {
rgrover1 712:b04b5db36865 137 &lockedStateChar, &lockChar, &unlockChar, &uriDataChar,
rgrover1 712:b04b5db36865 138 &flagsChar, &advPowerLevelsChar, &txPowerModeChar, &beaconPeriodChar, &resetChar
rgrover1 712:b04b5db36865 139 };
rgrover1 712:b04b5db36865 140
rgrover1 712:b04b5db36865 141 GattService configService(UUID_URI_BEACON_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
rgrover1 712:b04b5db36865 142
rgrover1 712:b04b5db36865 143 ble.addService(configService);
rgrover1 712:b04b5db36865 144 ble.onDataWritten(this, &URIBeaconConfigService::onDataWrittenCallback);
rgrover1 712:b04b5db36865 145
rgrover1 712:b04b5db36865 146 setupURIBeaconConfigAdvertisements(); /* Setup advertising for the configService. */
rgrover1 712:b04b5db36865 147
rgrover1 712:b04b5db36865 148 initSucceeded = true;
rgrover1 712:b04b5db36865 149 }
rgrover1 712:b04b5db36865 150
rgrover1 712:b04b5db36865 151 bool configuredSuccessfully(void) const {
rgrover1 712:b04b5db36865 152 return initSucceeded;
rgrover1 712:b04b5db36865 153 }
rgrover1 712:b04b5db36865 154
rgrover1 712:b04b5db36865 155 /* Start out by advertising the configService for a limited time after
rgrover1 712:b04b5db36865 156 * startup; and switch to the normal non-connectible beacon functionality
rgrover1 712:b04b5db36865 157 * afterwards. */
rgrover1 712:b04b5db36865 158 void setupURIBeaconConfigAdvertisements()
rgrover1 712:b04b5db36865 159 {
rgrover1 712:b04b5db36865 160 const char DEVICE_NAME[] = "mUriBeacon Config";
rgrover1 712:b04b5db36865 161
rgrover1 712:b04b5db36865 162 ble.gap().clearAdvertisingPayload();
rgrover1 712:b04b5db36865 163
rgrover1 712:b04b5db36865 164 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
rgrover1 712:b04b5db36865 165
rgrover1 712:b04b5db36865 166 // UUID is in different order in the ADV frame (!)
rgrover1 712:b04b5db36865 167 uint8_t reversedServiceUUID[sizeof(UUID_URI_BEACON_SERVICE)];
rgrover1 712:b04b5db36865 168 for (unsigned int i = 0; i < sizeof(UUID_URI_BEACON_SERVICE); i++) {
rgrover1 712:b04b5db36865 169 reversedServiceUUID[i] = UUID_URI_BEACON_SERVICE[sizeof(UUID_URI_BEACON_SERVICE) - i - 1];
rgrover1 712:b04b5db36865 170 }
rgrover1 712:b04b5db36865 171 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS, reversedServiceUUID, sizeof(reversedServiceUUID));
rgrover1 712:b04b5db36865 172 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_TAG);
rgrover1 712:b04b5db36865 173 ble.gap().accumulateScanResponse(GapAdvertisingData::COMPLETE_LOCAL_NAME, reinterpret_cast<const uint8_t *>(&DEVICE_NAME), sizeof(DEVICE_NAME));
rgrover1 712:b04b5db36865 174 ble.gap().accumulateScanResponse(GapAdvertisingData::TX_POWER_LEVEL,
rgrover1 712:b04b5db36865 175 reinterpret_cast<uint8_t *>(&defaultAdvPowerLevels[URIBeaconConfigService::TX_POWER_MODE_LOW]),
rgrover1 712:b04b5db36865 176 sizeof(uint8_t));
rgrover1 712:b04b5db36865 177
rgrover1 712:b04b5db36865 178 ble.gap().setTxPower(params.advPowerLevels[params.txPowerMode]);
rgrover1 712:b04b5db36865 179 ble.gap().setDeviceName(reinterpret_cast<const uint8_t *>(&DEVICE_NAME));
rgrover1 712:b04b5db36865 180 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 712:b04b5db36865 181 ble.gap().setAdvertisingInterval(Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(ADVERTISING_INTERVAL_MSEC));
rgrover1 712:b04b5db36865 182 }
rgrover1 712:b04b5db36865 183
rgrover1 712:b04b5db36865 184 /* Helper function to switch to the non-connectible normal mode for URIBeacon. This gets called after a timeout. */
rgrover1 712:b04b5db36865 185 void setupURIBeaconAdvertisements()
rgrover1 712:b04b5db36865 186 {
rgrover1 712:b04b5db36865 187 uint8_t serviceData[SERVICE_DATA_MAX];
rgrover1 712:b04b5db36865 188 unsigned serviceDataLen = 0;
rgrover1 712:b04b5db36865 189
rgrover1 712:b04b5db36865 190 /* Reinitialize the BLE stack. This will clear away the existing services and advertising state. */
rgrover1 712:b04b5db36865 191 ble.shutdown();
rgrover1 712:b04b5db36865 192 ble.init();
rgrover1 712:b04b5db36865 193
rgrover1 712:b04b5db36865 194 // Fields from the Service
rgrover1 712:b04b5db36865 195 unsigned beaconPeriod = params.beaconPeriod;
rgrover1 712:b04b5db36865 196 unsigned txPowerMode = params.txPowerMode;
rgrover1 712:b04b5db36865 197 unsigned uriDataLength = params.uriDataLength;
rgrover1 712:b04b5db36865 198 URIBeaconConfigService::UriData_t &uriData = params.uriData;
rgrover1 712:b04b5db36865 199 URIBeaconConfigService::PowerLevels_t &advPowerLevels = params.advPowerLevels;
rgrover1 712:b04b5db36865 200 uint8_t flags = params.flags;
rgrover1 712:b04b5db36865 201
rgrover1 712:b04b5db36865 202 extern void saveURIBeaconConfigParams(const Params_t *paramsP); /* forward declaration; necessary to avoid a circular dependency. */
rgrover1 712:b04b5db36865 203 saveURIBeaconConfigParams(&params);
rgrover1 712:b04b5db36865 204
rgrover1 712:b04b5db36865 205 ble.gap().clearAdvertisingPayload();
rgrover1 712:b04b5db36865 206 ble.gap().setTxPower(params.advPowerLevels[params.txPowerMode]);
rgrover1 712:b04b5db36865 207 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
rgrover1 712:b04b5db36865 208 ble.gap().setAdvertisingInterval(beaconPeriod);
rgrover1 712:b04b5db36865 209 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
rgrover1 712:b04b5db36865 210 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, BEACON_UUID, sizeof(BEACON_UUID));
rgrover1 712:b04b5db36865 211
rgrover1 712:b04b5db36865 212 serviceData[serviceDataLen++] = BEACON_UUID[0];
rgrover1 712:b04b5db36865 213 serviceData[serviceDataLen++] = BEACON_UUID[1];
rgrover1 712:b04b5db36865 214 serviceData[serviceDataLen++] = flags;
rgrover1 712:b04b5db36865 215 serviceData[serviceDataLen++] = advPowerLevels[txPowerMode];
rgrover1 712:b04b5db36865 216 for (unsigned j = 0; j < uriDataLength; j++) {
rgrover1 712:b04b5db36865 217 serviceData[serviceDataLen++] = uriData[j];
rgrover1 712:b04b5db36865 218 }
rgrover1 712:b04b5db36865 219 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, serviceData, serviceDataLen);
rgrover1 712:b04b5db36865 220 }
rgrover1 712:b04b5db36865 221
rgrover1 712:b04b5db36865 222 private:
rgrover1 712:b04b5db36865 223 // True if the lock bits are non-zero
rgrover1 712:b04b5db36865 224 bool isLocked() {
rgrover1 712:b04b5db36865 225 Lock_t testLock;
rgrover1 712:b04b5db36865 226 memset(testLock, 0, sizeof(Lock_t));
rgrover1 712:b04b5db36865 227 return memcmp(params.lock, testLock, sizeof(Lock_t));
rgrover1 712:b04b5db36865 228 }
rgrover1 712:b04b5db36865 229
rgrover1 712:b04b5db36865 230 /*
rgrover1 712:b04b5db36865 231 * This callback is invoked when a GATT client attempts to modify any of the
rgrover1 712:b04b5db36865 232 * characteristics of this service. Attempts to do so are also applied to
rgrover1 712:b04b5db36865 233 * the internal state of this service object.
rgrover1 712:b04b5db36865 234 */
rgrover1 712:b04b5db36865 235 void onDataWrittenCallback(const GattWriteCallbackParams *writeParams) {
rgrover1 712:b04b5db36865 236 uint16_t handle = writeParams->handle;
rgrover1 712:b04b5db36865 237
rgrover1 712:b04b5db36865 238 if (handle == lockChar.getValueHandle()) {
rgrover1 712:b04b5db36865 239 // Validated earlier
rgrover1 712:b04b5db36865 240 memcpy(params.lock, writeParams->data, sizeof(Lock_t));
rgrover1 712:b04b5db36865 241 // use isLocked() in case bits are being set to all 0's
rgrover1 712:b04b5db36865 242 lockedState = isLocked();
rgrover1 712:b04b5db36865 243 } else if (handle == unlockChar.getValueHandle()) {
rgrover1 712:b04b5db36865 244 // Validated earlier
rgrover1 712:b04b5db36865 245 memset(params.lock, 0, sizeof(Lock_t));
rgrover1 712:b04b5db36865 246 lockedState = false;
rgrover1 712:b04b5db36865 247 } else if (handle == uriDataChar.getValueHandle()) {
rgrover1 712:b04b5db36865 248 params.uriDataLength = writeParams->len;
rgrover1 712:b04b5db36865 249 memcpy(params.uriData, writeParams->data, params.uriDataLength);
rgrover1 712:b04b5db36865 250 } else if (handle == flagsChar.getValueHandle()) {
rgrover1 712:b04b5db36865 251 params.flags = *(writeParams->data);
rgrover1 712:b04b5db36865 252 } else if (handle == advPowerLevelsChar.getValueHandle()) {
rgrover1 712:b04b5db36865 253 memcpy(params.advPowerLevels, writeParams->data, sizeof(PowerLevels_t));
rgrover1 712:b04b5db36865 254 } else if (handle == txPowerModeChar.getValueHandle()) {
rgrover1 712:b04b5db36865 255 params.txPowerMode = *(writeParams->data);
rgrover1 712:b04b5db36865 256 } else if (handle == beaconPeriodChar.getValueHandle()) {
rgrover1 712:b04b5db36865 257 params.beaconPeriod = *((uint16_t *)(writeParams->data));
rgrover1 712:b04b5db36865 258
rgrover1 712:b04b5db36865 259 /* Re-map beaconPeriod to within permissible bounds if necessary. */
rgrover1 712:b04b5db36865 260 if (params.beaconPeriod != 0) {
rgrover1 712:b04b5db36865 261 bool paramsUpdated = false;
rgrover1 712:b04b5db36865 262 if (params.beaconPeriod < ble.gap().getMinAdvertisingInterval()) {
rgrover1 712:b04b5db36865 263 params.beaconPeriod = ble.gap().getMinAdvertisingInterval();
rgrover1 712:b04b5db36865 264 paramsUpdated = true;
rgrover1 712:b04b5db36865 265 } else if (params.beaconPeriod > ble.gap().getMaxAdvertisingInterval()) {
rgrover1 712:b04b5db36865 266 params.beaconPeriod = ble.gap().getMaxAdvertisingInterval();
rgrover1 712:b04b5db36865 267 paramsUpdated = true;
rgrover1 712:b04b5db36865 268 }
rgrover1 712:b04b5db36865 269 if (paramsUpdated) {
rgrover1 727:1a1f5c5aedfe 270 ble.updateCharacteristicValue(beaconPeriodChar.getValueHandle(), reinterpret_cast<uint8_t *>(&params.beaconPeriod), sizeof(uint16_t));
rgrover1 712:b04b5db36865 271 }
rgrover1 712:b04b5db36865 272 }
rgrover1 712:b04b5db36865 273 } else if (handle == resetChar.getValueHandle()) {
rgrover1 712:b04b5db36865 274 resetToDefaults();
rgrover1 712:b04b5db36865 275 }
rgrover1 712:b04b5db36865 276 }
rgrover1 712:b04b5db36865 277
rgrover1 712:b04b5db36865 278 /*
rgrover1 712:b04b5db36865 279 * Reset the default values.
rgrover1 712:b04b5db36865 280 */
rgrover1 712:b04b5db36865 281 void resetToDefaults(void) {
rgrover1 712:b04b5db36865 282 lockedState = false;
rgrover1 712:b04b5db36865 283 memset(params.lock, 0, sizeof(Lock_t));
rgrover1 712:b04b5db36865 284 memcpy(params.uriData, defaultUriData, URI_DATA_MAX);
rgrover1 712:b04b5db36865 285 params.uriDataLength = defaultUriDataLength;
rgrover1 712:b04b5db36865 286 params.flags = 0;
rgrover1 712:b04b5db36865 287 memcpy(params.advPowerLevels, defaultAdvPowerLevels, sizeof(PowerLevels_t));
rgrover1 712:b04b5db36865 288 params.txPowerMode = TX_POWER_MODE_LOW;
rgrover1 712:b04b5db36865 289 params.beaconPeriod = 1000;
rgrover1 712:b04b5db36865 290 updateCharacteristicValues();
rgrover1 712:b04b5db36865 291 }
rgrover1 712:b04b5db36865 292
rgrover1 712:b04b5db36865 293 /*
rgrover1 712:b04b5db36865 294 * Internal helper function used to update the GATT database following any
rgrover1 712:b04b5db36865 295 * change to the internal state of the service object.
rgrover1 712:b04b5db36865 296 */
rgrover1 712:b04b5db36865 297 void updateCharacteristicValues(void) {
rgrover1 727:1a1f5c5aedfe 298 ble.updateCharacteristicValue(lockedStateChar.getValueHandle(), &lockedState, 1);
rgrover1 727:1a1f5c5aedfe 299 ble.updateCharacteristicValue(uriDataChar.getValueHandle(), params.uriData, params.uriDataLength);
rgrover1 727:1a1f5c5aedfe 300 ble.updateCharacteristicValue(flagsChar.getValueHandle(), &params.flags, 1);
rgrover1 727:1a1f5c5aedfe 301 ble.updateCharacteristicValue(beaconPeriodChar.getValueHandle(),
rgrover1 712:b04b5db36865 302 reinterpret_cast<uint8_t *>(&params.beaconPeriod), sizeof(uint16_t));
rgrover1 727:1a1f5c5aedfe 303 ble.updateCharacteristicValue(txPowerModeChar.getValueHandle(), &params.txPowerMode, 1);
rgrover1 727:1a1f5c5aedfe 304 ble.updateCharacteristicValue(advPowerLevelsChar.getValueHandle(),
rgrover1 712:b04b5db36865 305 reinterpret_cast<uint8_t *>(params.advPowerLevels), sizeof(PowerLevels_t));
rgrover1 712:b04b5db36865 306 }
rgrover1 712:b04b5db36865 307
rgrover1 727:1a1f5c5aedfe 308 private:
rgrover1 712:b04b5db36865 309 void lockAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
rgrover1 712:b04b5db36865 310 if (lockedState) {
rgrover1 712:b04b5db36865 311 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
rgrover1 712:b04b5db36865 312 } else if (authParams->len != sizeof(Lock_t)) {
rgrover1 712:b04b5db36865 313 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
rgrover1 712:b04b5db36865 314 } else if (authParams->offset != 0) {
rgrover1 712:b04b5db36865 315 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
rgrover1 712:b04b5db36865 316 } else {
rgrover1 712:b04b5db36865 317 authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
rgrover1 712:b04b5db36865 318 }
rgrover1 712:b04b5db36865 319 }
rgrover1 712:b04b5db36865 320
rgrover1 712:b04b5db36865 321
rgrover1 712:b04b5db36865 322 void unlockAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
rgrover1 712:b04b5db36865 323 if (!lockedState) {
rgrover1 712:b04b5db36865 324 authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
rgrover1 712:b04b5db36865 325 } else if (authParams->len != sizeof(Lock_t)) {
rgrover1 712:b04b5db36865 326 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
rgrover1 712:b04b5db36865 327 } else if (authParams->offset != 0) {
rgrover1 712:b04b5db36865 328 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
rgrover1 712:b04b5db36865 329 } else if (memcmp(authParams->data, params.lock, sizeof(Lock_t)) != 0) {
rgrover1 712:b04b5db36865 330 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
rgrover1 712:b04b5db36865 331 } else {
rgrover1 712:b04b5db36865 332 authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
rgrover1 712:b04b5db36865 333 }
rgrover1 712:b04b5db36865 334 }
rgrover1 712:b04b5db36865 335
rgrover1 712:b04b5db36865 336 void uriDataWriteAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
rgrover1 712:b04b5db36865 337 if (lockedState) {
rgrover1 712:b04b5db36865 338 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
rgrover1 712:b04b5db36865 339 } else if (authParams->offset != 0) {
rgrover1 712:b04b5db36865 340 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
rgrover1 712:b04b5db36865 341 } else {
rgrover1 712:b04b5db36865 342 authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
rgrover1 712:b04b5db36865 343 }
rgrover1 712:b04b5db36865 344 }
rgrover1 712:b04b5db36865 345
rgrover1 712:b04b5db36865 346 void powerModeAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
rgrover1 712:b04b5db36865 347 if (lockedState) {
rgrover1 712:b04b5db36865 348 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
rgrover1 712:b04b5db36865 349 } else if (authParams->len != sizeof(uint8_t)) {
rgrover1 712:b04b5db36865 350 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
rgrover1 712:b04b5db36865 351 } else if (authParams->offset != 0) {
rgrover1 712:b04b5db36865 352 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
rgrover1 712:b04b5db36865 353 } else if (*((uint8_t *)authParams->data) >= NUM_POWER_MODES) {
rgrover1 712:b04b5db36865 354 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_WRITE_NOT_PERMITTED;
rgrover1 712:b04b5db36865 355 } else {
rgrover1 712:b04b5db36865 356 authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
rgrover1 712:b04b5db36865 357 }
rgrover1 712:b04b5db36865 358 }
rgrover1 712:b04b5db36865 359
rgrover1 712:b04b5db36865 360 template <typename T>
rgrover1 712:b04b5db36865 361 void basicAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
rgrover1 712:b04b5db36865 362 if (lockedState) {
rgrover1 712:b04b5db36865 363 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
rgrover1 712:b04b5db36865 364 } else if (authParams->len != sizeof(T)) {
rgrover1 712:b04b5db36865 365 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
rgrover1 712:b04b5db36865 366 } else if (authParams->offset != 0) {
rgrover1 712:b04b5db36865 367 authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
rgrover1 712:b04b5db36865 368 } else {
rgrover1 712:b04b5db36865 369 authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
rgrover1 712:b04b5db36865 370 }
rgrover1 712:b04b5db36865 371 }
rgrover1 712:b04b5db36865 372
rgrover1 712:b04b5db36865 373 protected:
rgrover1 712:b04b5db36865 374 BLE &ble;
rgrover1 712:b04b5db36865 375 Params_t &params;
rgrover1 712:b04b5db36865 376
rgrover1 712:b04b5db36865 377 size_t defaultUriDataLength; // Default value that is restored on reset
rgrover1 712:b04b5db36865 378 UriData_t defaultUriData; // Default value that is restored on reset
rgrover1 712:b04b5db36865 379 PowerLevels_t &defaultAdvPowerLevels; // Default value that is restored on reset
rgrover1 712:b04b5db36865 380
rgrover1 712:b04b5db36865 381 uint8_t lockedState;
rgrover1 712:b04b5db36865 382 bool initSucceeded;
rgrover1 712:b04b5db36865 383 uint8_t resetFlag;
rgrover1 712:b04b5db36865 384
rgrover1 712:b04b5db36865 385 ReadOnlyGattCharacteristic<uint8_t> lockedStateChar;
rgrover1 712:b04b5db36865 386 WriteOnlyGattCharacteristic<Lock_t> lockChar;
rgrover1 712:b04b5db36865 387 GattCharacteristic uriDataChar;
rgrover1 712:b04b5db36865 388 WriteOnlyGattCharacteristic<Lock_t> unlockChar;
rgrover1 712:b04b5db36865 389 ReadWriteGattCharacteristic<uint8_t> flagsChar;
rgrover1 712:b04b5db36865 390 ReadWriteGattCharacteristic<PowerLevels_t> advPowerLevelsChar;
rgrover1 712:b04b5db36865 391 ReadWriteGattCharacteristic<uint8_t> txPowerModeChar;
rgrover1 712:b04b5db36865 392 ReadWriteGattCharacteristic<uint16_t> beaconPeriodChar;
rgrover1 712:b04b5db36865 393 WriteOnlyGattCharacteristic<uint8_t> resetChar;
rgrover1 712:b04b5db36865 394
rgrover1 712:b04b5db36865 395 public:
rgrover1 712:b04b5db36865 396 /*
rgrover1 712:b04b5db36865 397 * Encode a human-readable URI into the binary format defined by URIBeacon spec (https://github.com/google/uribeacon/tree/master/specification).
rgrover1 712:b04b5db36865 398 */
rgrover1 712:b04b5db36865 399 static void encodeURI(const char *uriDataIn, UriData_t uriDataOut, size_t &sizeofURIDataOut) {
rgrover1 712:b04b5db36865 400 const char *prefixes[] = {
rgrover1 712:b04b5db36865 401 "http://www.",
rgrover1 712:b04b5db36865 402 "https://www.",
rgrover1 712:b04b5db36865 403 "http://",
rgrover1 712:b04b5db36865 404 "https://",
rgrover1 712:b04b5db36865 405 "urn:uuid:"
rgrover1 712:b04b5db36865 406 };
rgrover1 712:b04b5db36865 407 const size_t NUM_PREFIXES = sizeof(prefixes) / sizeof(char *);
rgrover1 712:b04b5db36865 408 const char *suffixes[] = {
rgrover1 712:b04b5db36865 409 ".com/",
rgrover1 712:b04b5db36865 410 ".org/",
rgrover1 712:b04b5db36865 411 ".edu/",
rgrover1 712:b04b5db36865 412 ".net/",
rgrover1 712:b04b5db36865 413 ".info/",
rgrover1 712:b04b5db36865 414 ".biz/",
rgrover1 712:b04b5db36865 415 ".gov/",
rgrover1 712:b04b5db36865 416 ".com",
rgrover1 712:b04b5db36865 417 ".org",
rgrover1 712:b04b5db36865 418 ".edu",
rgrover1 712:b04b5db36865 419 ".net",
rgrover1 712:b04b5db36865 420 ".info",
rgrover1 712:b04b5db36865 421 ".biz",
rgrover1 712:b04b5db36865 422 ".gov"
rgrover1 712:b04b5db36865 423 };
rgrover1 712:b04b5db36865 424 const size_t NUM_SUFFIXES = sizeof(suffixes) / sizeof(char *);
rgrover1 712:b04b5db36865 425
rgrover1 712:b04b5db36865 426 sizeofURIDataOut = 0;
rgrover1 712:b04b5db36865 427 memset(uriDataOut, 0, sizeof(UriData_t));
rgrover1 712:b04b5db36865 428
rgrover1 712:b04b5db36865 429 if ((uriDataIn == NULL) || (strlen(uriDataIn) == 0)) {
rgrover1 712:b04b5db36865 430 return;
rgrover1 712:b04b5db36865 431 }
rgrover1 712:b04b5db36865 432
rgrover1 712:b04b5db36865 433 /*
rgrover1 712:b04b5db36865 434 * handle prefix
rgrover1 712:b04b5db36865 435 */
rgrover1 712:b04b5db36865 436 for (unsigned i = 0; i < NUM_PREFIXES; i++) {
rgrover1 712:b04b5db36865 437 size_t prefixLen = strlen(prefixes[i]);
rgrover1 712:b04b5db36865 438 if (strncmp(uriDataIn, prefixes[i], prefixLen) == 0) {
rgrover1 712:b04b5db36865 439 uriDataOut[sizeofURIDataOut++] = i;
rgrover1 712:b04b5db36865 440 uriDataIn += prefixLen;
rgrover1 712:b04b5db36865 441 break;
rgrover1 712:b04b5db36865 442 }
rgrover1 712:b04b5db36865 443 }
rgrover1 712:b04b5db36865 444
rgrover1 712:b04b5db36865 445 /*
rgrover1 712:b04b5db36865 446 * handle suffixes
rgrover1 712:b04b5db36865 447 */
rgrover1 712:b04b5db36865 448 while (*uriDataIn && (sizeofURIDataOut < URI_DATA_MAX)) {
rgrover1 712:b04b5db36865 449 /* check for suffix match */
rgrover1 712:b04b5db36865 450 unsigned i;
rgrover1 712:b04b5db36865 451 for (i = 0; i < NUM_SUFFIXES; i++) {
rgrover1 712:b04b5db36865 452 size_t suffixLen = strlen(suffixes[i]);
rgrover1 712:b04b5db36865 453 if (strncmp(uriDataIn, suffixes[i], suffixLen) == 0) {
rgrover1 712:b04b5db36865 454 uriDataOut[sizeofURIDataOut++] = i;
rgrover1 712:b04b5db36865 455 uriDataIn += suffixLen;
rgrover1 712:b04b5db36865 456 break; /* from the for loop for checking against suffixes */
rgrover1 712:b04b5db36865 457 }
rgrover1 712:b04b5db36865 458 }
rgrover1 712:b04b5db36865 459 /* This is the default case where we've got an ordinary character which doesn't match a suffix. */
rgrover1 712:b04b5db36865 460 if (i == NUM_SUFFIXES) {
rgrover1 712:b04b5db36865 461 uriDataOut[sizeofURIDataOut++] = *uriDataIn;
rgrover1 712:b04b5db36865 462 ++uriDataIn;
rgrover1 712:b04b5db36865 463 }
rgrover1 712:b04b5db36865 464 }
rgrover1 712:b04b5db36865 465 }
rgrover1 712:b04b5db36865 466 };
rgrover1 712:b04b5db36865 467
rgrover1 712:b04b5db36865 468 #endif // SERVICES_URIBEACONCONFIGSERVICE_H_