Bike service

Fork of BLE_API by Bluetooth Low Energy

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API Documentation at this revision

Comitter:
rgrover1
Date:
Tue Sep 29 09:54:18 2015 +0100
Parent:
829:9072de50087b
Child:
831:47413688398a
Commit message:
Synchronized with git rev 1811f210
Author: Austin Blackstone
updated eddystone service and added config service.

Changed in this revision

ble/services/EddystoneConfigService.h Show annotated file Show diff for this revision Revisions of this file
ble/services/EddystoneService.h Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ble/services/EddystoneConfigService.h	Tue Sep 29 09:54:18 2015 +0100
@@ -0,0 +1,548 @@
+/* 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 SERVICES_EDDYSTONEBEACONCONFIGSERVICE_H_
+#define SERVICES_EDDYSTONEBEACONCONFIGSERVICE_H_
+
+#include "mbed.h"
+#include "ble/BLE.h"
+#include "ble/services/EddystoneService.h"
+
+#define EDDYSTONE_NUM_UID_FRAMES 10
+#define EDDYSTONE_NUM_URL_FRAMES 50
+
+
+#define UUID_URI_BEACON(FIRST, SECOND) {                         \
+        0xee, 0x0c, FIRST, SECOND, 0x87, 0x86, 0x40, 0xba,       \
+        0xab, 0x96, 0x99, 0xb9, 0x1a, 0xc9, 0x81, 0xd8,          \
+}
+
+static const uint8_t UUID_URI_BEACON_SERVICE[]    = UUID_URI_BEACON(0x20, 0x80);
+static const uint8_t UUID_LOCK_STATE_CHAR[]       = UUID_URI_BEACON(0x20, 0x81);
+static const uint8_t UUID_LOCK_CHAR[]             = UUID_URI_BEACON(0x20, 0x82);
+static const uint8_t UUID_UNLOCK_CHAR[]           = UUID_URI_BEACON(0x20, 0x83);
+static const uint8_t UUID_URI_DATA_CHAR[]         = UUID_URI_BEACON(0x20, 0x84);
+static const uint8_t UUID_FLAGS_CHAR[]            = UUID_URI_BEACON(0x20, 0x85);
+static const uint8_t UUID_ADV_POWER_LEVELS_CHAR[] = UUID_URI_BEACON(0x20, 0x86);
+static const uint8_t UUID_TX_POWER_MODE_CHAR[]    = UUID_URI_BEACON(0x20, 0x87);
+static const uint8_t UUID_BEACON_PERIOD_CHAR[]    = UUID_URI_BEACON(0x20, 0x88);
+static const uint8_t UUID_RESET_CHAR[]            = UUID_URI_BEACON(0x20, 0x89);
+extern const uint8_t       BEACON_EDDYSTONE[2];
+
+/**
+* @class EddystoneConfigService
+* @brief Eddystone Configuration Service. Can be used to set URL, adjust power levels, and set flags.
+* See https://github.com/google/eddystone
+*
+*/
+class EddystoneConfigService
+{
+public:    
+    /**
+     * @brief Transmission Power Modes for UriBeacon
+     */
+    static const uint8_t TX_POWER_MODE_LOWEST = 0; /*!< Lowest TX power mode */
+    static const uint8_t TX_POWER_MODE_LOW    = 1; /*!< Low TX power mode */
+    static const uint8_t TX_POWER_MODE_MEDIUM = 2; /*!< Medium TX power mode */
+    static const uint8_t TX_POWER_MODE_HIGH   = 3; /*!< High TX power mode */
+    static const unsigned NUM_POWER_MODES     = 4; /*!< Number of Power Modes defined */
+
+    static const int ADVERTISING_INTERVAL_MSEC = 1000;  // Advertising interval for config service.
+    static const int SERVICE_DATA_MAX = 31;             // Maximum size of service data in ADV packets
+
+    typedef uint8_t Lock_t[16];               /* 128 bits */
+    typedef int8_t PowerLevels_t[NUM_POWER_MODES];
+
+    // There are currently 3 subframes defined, URI, UID, and TLM
+#define EDDYSTONE_MAX_FRAMETYPE 3
+    void (*frames[EDDYSTONE_MAX_FRAMETYPE])(uint8_t *, uint32_t);
+    uint8_t frameIndex;
+    static const int URI_DATA_MAX = 18;
+    typedef uint8_t  UriData_t[URI_DATA_MAX];
+
+    // UID Frame Type subfields
+    static const int UID_NAMESPACEID_SIZE = 10;
+    typedef uint8_t  UIDNamespaceID_t[UID_NAMESPACEID_SIZE];
+    static const int UID_INSTANCEID_SIZE = 6;
+    typedef uint8_t  UIDInstanceID_t[UID_INSTANCEID_SIZE];
+
+    // Eddystone Frame Type ID
+    static const uint8_t FRAME_TYPE_UID = 0x00;
+    static const uint8_t FRAME_TYPE_URL = 0x10;
+    static const uint8_t FRAME_TYPE_TLM = 0x20;
+
+    static const uint8_t FRAME_SIZE_TLM = 14; // TLM frame is a constant 14Bytes
+    static const uint8_t FRAME_SIZE_UID = 20; // includes RFU bytes
+
+    struct Params_t {
+        // Config Data
+        bool          isConfigured;  // Flag for configuration being complete, True = configured, false = not configured. Reset at instantiation, used for external callbacks. 
+        uint8_t       lockedState;
+        Lock_t        lock;
+        uint8_t       flags;
+        PowerLevels_t advPowerLevels; // Current value of AdvertisedPowerLevels
+        uint8_t       txPowerMode;    // Firmware power levels used with setTxPower()
+        uint16_t      beaconPeriod;
+        // TLM Frame Data
+        uint8_t       tlmVersion;     // version of TLM packet
+        bool          tlmEnabled;
+        float       tlmBeaconPeriod; // how often to broadcat TLM frame, in S
+        // URI Frame Data
+        uint8_t       uriDataLength;
+        UriData_t     uriData;
+        bool          uriEnabled;
+        float       uriBeaconPeriod; // how often to broadcast URIFrame, in S
+        // UID Frame Data
+        UIDNamespaceID_t uidNamespaceID; // UUID type, Namespace ID, 10B
+        UIDInstanceID_t  uidInstanceID;  // UUID type, Instance ID,  6B
+        bool          uidEnabled;
+        float       uidBeaconPeriod;   // how often to broadcast UID Frame, in S
+    };
+
+    /**
+     * @param[ref]    ble
+     *                    BLEDevice object for the underlying controller.
+     * @param[in/out] paramsIn
+     *                    Reference to application-visible beacon state, loaded
+     *                    from persistent storage at startup.
+     * @param[in]     defaultAdvPowerLevelsIn
+     *                    Default power-levels array; applies only if the resetToDefaultsFlag is true.
+     */
+    EddystoneConfigService(BLEDevice     &bleIn,
+                           Params_t      &paramsIn,
+                           PowerLevels_t &defaultAdvPowerLevelsIn,
+                           PowerLevels_t &radioPowerLevelsIn) :
+        ble(bleIn),
+        params(paramsIn),       // Initialize URL Data
+        defaultAdvPowerLevels(defaultAdvPowerLevelsIn),
+        radioPowerLevels(radioPowerLevelsIn),
+        initSucceeded(false),
+        resetFlag(),
+        defaultUidNamespaceID(), // Initialize UID Data
+        defaultUidInstanceID(),
+        defaultUidPower(defaultAdvPowerLevelsIn[params.txPowerMode]),
+        uidIsSet(false),
+        defaultUriDataLength(),
+        defaultUriData(),
+        defaultUrlPower(defaultAdvPowerLevelsIn[params.txPowerMode]),
+        urlIsSet(false),
+        tlmIsSet(false),
+        lockedStateChar(UUID_LOCK_STATE_CHAR, &params.lockedState),
+        lockChar(UUID_LOCK_CHAR, &params.lock),
+        uriDataChar(UUID_URI_DATA_CHAR, params.uriData, 0, URI_DATA_MAX,
+                    GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE),
+        unlockChar(UUID_UNLOCK_CHAR, &params.lock),
+        flagsChar(UUID_FLAGS_CHAR, &params.flags),
+        advPowerLevelsChar(UUID_ADV_POWER_LEVELS_CHAR, &params.advPowerLevels),
+        txPowerModeChar(UUID_TX_POWER_MODE_CHAR, &params.txPowerMode),
+        beaconPeriodChar(UUID_BEACON_PERIOD_CHAR, &params.beaconPeriod),
+        resetChar(UUID_RESET_CHAR, &resetFlag) 
+        {
+        // set eddystone as not configured yet. Used to exit config before timeout if GATT services are written to.
+        params.isConfigured = false;
+    }
+    
+    /*
+    * @breif Start EddystoneConfig advertising. This function should be called after the EddystoneConfig constructor and after all the frames have been added. 
+    * @paramsP[in]   resetToDefaultsFlag
+     *                    Applies to the state of the 'paramsIn' parameter.
+     *                    If true, it indicates that paramsIn is potentially
+     *                    un-initialized, and default values should be used
+     *                    instead. Otherwise, paramsIn overrides the defaults.
+    * 
+    */
+    void start(bool resetToDefaultsFlag){
+        INFO("reset to defaults flag = %d", resetToDefaultsFlag);
+        if (!resetToDefaultsFlag && (params.uriDataLength > URI_DATA_MAX)) {
+            INFO("Reset to Defaults triggered");
+            resetToDefaultsFlag = true;
+        }
+
+        lockChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::lockAuthorizationCallback);
+        unlockChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::unlockAuthorizationCallback);
+        uriDataChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::uriDataWriteAuthorizationCallback);
+        flagsChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::basicAuthorizationCallback<uint8_t>);
+        advPowerLevelsChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::basicAuthorizationCallback<PowerLevels_t>);
+        txPowerModeChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::powerModeAuthorizationCallback);
+        beaconPeriodChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::basicAuthorizationCallback<uint16_t>);
+        resetChar.setWriteAuthorizationCallback(this, &EddystoneConfigService::basicAuthorizationCallback<uint8_t>);
+
+        static GattCharacteristic *charTable[] = {
+            &lockedStateChar, &lockChar, &unlockChar, &uriDataChar,
+            &flagsChar, &advPowerLevelsChar, &txPowerModeChar, &beaconPeriodChar, &resetChar
+        };
+
+        GattService configService(UUID_URI_BEACON_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
+
+        ble.addService(configService);
+        if (resetToDefaultsFlag) {
+            resetToDefaults();
+        } else {
+            updateCharacteristicValues();
+        }
+        
+        ble.onDataWritten(this, &EddystoneConfigService::onDataWrittenCallback);
+
+        setupEddystoneConfigAdvertisements(); /* Setup advertising for the configService. */
+
+        initSucceeded = true;
+    }
+
+    /*
+    * Check if eddystone initialized successfully
+    */
+    bool initSuccessfully(void) const {
+        return initSucceeded;
+    }
+    
+    /*
+    * @breif Function to update the default values for the TLM frame. Only applied if Reset Defaults is applied. 
+    *
+    * @param[in] tlmVersionIn     Version of the TLM frame being used
+    * @param[in] advPeriodInMin how long between TLM frames being advertised, this is measured in minutes.
+    *
+    */
+    void setDefaultTLMFrameData(uint8_t tlmVersionIn = 0, float advPeriodInSec = 60){
+        DBG("Setting Default TLM Data, version = %d, advPeriodInMind= %f",tlmVersionIn,advPeriodInSec);
+        defaultTlmVersion = tlmVersionIn;
+        TlmBatteryVoltage = 0;
+        TlmBeaconTemp = 0;
+        TlmPduCount = 0;
+        TlmTimeSinceBoot = 0;
+        defaultTlmAdvPeriod = advPeriodInSec;
+        tlmIsSet = true; // flag to add this to eddystone service when config is done
+    
+    }
+    
+    /*
+    * @breif Function to update the default values for the URI frame. Only applied if Reset Defaults is applied. 
+    *
+    * @param[in] uriIn      url to advertise
+    * @param[in] advPeriod  how long to advertise the url for, measured in number of ADV frames.
+    *
+    */
+    void setDefaultURIFrameData(const char * uriIn, float  advPeriod = 1){
+        DBG("Setting Default URI Data");
+        // Set URL Frame
+          EddystoneService::encodeURL(uriIn, defaultUriData, defaultUriDataLength); // encode URL to URL Formatting
+        if (defaultUriDataLength > URI_DATA_MAX) {
+            return;
+        }
+        memcpy(defaultUriData,uriIn,URI_DATA_MAX);
+        //defaultUriDataLength = strlen(uriIn);
+        INFO("\t default URI = %s : %d", uriIn, defaultUriDataLength);
+//              defaultUriData = (UriData_t *)uriIn;
+        defaultUriAdvPeriod = advPeriod;
+        urlIsSet = true; // flag to add this to eddystone service when config is done
+    }
+    
+    /*
+    * @breif Function to update the default values for the UID frame. Only applied if Reset Defaults is applied. 
+    *
+    * @param[in] namespaceID 10Byte Namespace ID
+    * @param[in] instanceID  6Byte Instance ID
+    * @param[in] advPeriod   how long to advertise the URL for, measured in the number of adv frames.
+    *
+    */
+    void setDefaultUIDFrameData(UIDNamespaceID_t *namespaceID, UIDInstanceID_t *instanceID, float advPeriod = 10){
+        //Set UID frame
+        DBG("Setting default UID Data");
+        memcpy(defaultUidNamespaceID, namespaceID, UID_NAMESPACEID_SIZE);
+        memcpy(defaultUidInstanceID,  instanceID,  UID_INSTANCEID_SIZE);
+        defaultUidAdvPeriod = advPeriod;
+        uidIsSet = true; // flag to add this to eddystone service when config is done
+    }
+
+    /* Start out by advertising the configService for a limited time after
+     * startup; and switch to the normal non-connectible beacon functionality
+     * afterwards. */
+    void setupEddystoneConfigAdvertisements() {
+        const char DEVICE_NAME[] = "eddystone Config";
+
+        ble.clearAdvertisingPayload();
+
+        ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+
+        // UUID is in different order in the ADV frame (!)
+        uint8_t reversedServiceUUID[sizeof(UUID_URI_BEACON_SERVICE)];
+        for (unsigned int i = 0; i < sizeof(UUID_URI_BEACON_SERVICE); i++) {
+            reversedServiceUUID[i] = UUID_URI_BEACON_SERVICE[sizeof(UUID_URI_BEACON_SERVICE) - i - 1];
+        }
+        ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS, reversedServiceUUID, sizeof(reversedServiceUUID));
+        ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_TAG);
+        ble.accumulateScanResponse(GapAdvertisingData::COMPLETE_LOCAL_NAME, reinterpret_cast<const uint8_t *>(&DEVICE_NAME), sizeof(DEVICE_NAME));
+        ble.accumulateScanResponse(
+            GapAdvertisingData::TX_POWER_LEVEL,
+            reinterpret_cast<uint8_t *>(&defaultAdvPowerLevels[EddystoneConfigService::TX_POWER_MODE_LOW]),
+            sizeof(uint8_t));
+
+        ble.setTxPower(radioPowerLevels[params.txPowerMode]);
+        ble.setDeviceName(reinterpret_cast<const uint8_t *>(&DEVICE_NAME));
+        ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
+        ble.setAdvertisingInterval(GapAdvertisingParams::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(ADVERTISING_INTERVAL_MSEC));
+    }
+
+    /*
+    *   This function actually impliments the Eddystone Beacon service. It can be called with the help of the wrapper function
+    *   to load saved config params, or it can be called explicitly to reset the eddystone beacon to hardcoded values on each reset.
+    *
+    */
+    void setupEddystoneAdvertisements() {
+        DBG("Switching Config -> adv");
+        // Save params to storage
+        extern void saveURIBeaconConfigParams(const Params_t *paramsP); /* forward declaration; necessary to avoid a circular dependency. */
+        saveURIBeaconConfigParams(&params);
+        INFO("Saved Params to Memory.")
+        // Setup Eddystone Service 
+        static EddystoneService eddyServ(ble,params.beaconPeriod,radioPowerLevels[params.txPowerMode]);
+        // Set configured frames (TLM,UID,URI...etc)
+        if(params.tlmEnabled){
+            eddyServ.setTLMFrameData(params.tlmVersion,params.tlmBeaconPeriod);
+        }
+        if(params.uriEnabled){
+            eddyServ.setURLFrameData(params.advPowerLevels[params.txPowerMode], (const char *) params.uriData, params.uriBeaconPeriod);
+        }
+        if(params.uidEnabled){
+            eddyServ.setUIDFrameData(params.advPowerLevels[params.txPowerMode], (uint8_t *) params.uidNamespaceID, (uint8_t *) params.uidInstanceID, params.uidBeaconPeriod);
+        }        
+        // Start Advertising the eddystone service. 
+        eddyServ.start(); 
+    }
+
+private:
+
+    /*
+     * This callback is invoked when a GATT client attempts to modify any of the
+     * characteristics of this service. Attempts to do so are also applied to
+     * the internal state of this service object.
+     */
+    void onDataWrittenCallback(const GattWriteCallbackParams *writeParams) {
+        uint16_t handle = writeParams->handle;
+
+        if (handle == lockChar.getValueHandle()) {
+            // Validated earlier
+            memcpy(params.lock, writeParams->data, sizeof(Lock_t));
+            // Set the state to be locked by the lock code (note: zeros are a valid lock)
+            params.lockedState = true;
+            INFO("Device Locked");
+        } else if (handle == unlockChar.getValueHandle()) {
+            // Validated earlier
+            params.lockedState = false;
+            INFO("Device Unlocked");
+        } else if (handle == uriDataChar.getValueHandle()) {
+            params.uriDataLength = writeParams->len;
+            memset(params.uriData,0x00,URI_DATA_MAX); // clear URI string
+            memcpy(params.uriData, writeParams->data, params.uriDataLength); // set URI string
+            params.uriEnabled = true;
+            INFO("URI = %s, URILen = %d", writeParams->data, writeParams->len);
+        } else if (handle == flagsChar.getValueHandle()) {
+            params.flags = *(writeParams->data);
+            INFO("flagsChar = 0x%x",params.flags);
+        } else if (handle == advPowerLevelsChar.getValueHandle()) {
+            memcpy(params.advPowerLevels, writeParams->data, sizeof(PowerLevels_t));
+            INFO("PowerLevelsChar = %4x",params.advPowerLevels);
+        } else if (handle == txPowerModeChar.getValueHandle()) {
+            params.txPowerMode = *(writeParams->data);
+            INFO("TxPowerModeChar = %d",params.txPowerMode);
+        } else if (handle == beaconPeriodChar.getValueHandle()) {
+            params.beaconPeriod = *((uint16_t *)(writeParams->data));
+            INFO("BeaconPeriod = %d",params.beaconPeriod);
+
+            /* Re-map beaconPeriod to within permissible bounds if necessary. */
+            if (params.beaconPeriod != 0) {
+                bool paramsUpdated = false;
+                if (params.beaconPeriod < ble.getMinAdvertisingInterval()) {
+                    params.beaconPeriod = ble.getMinAdvertisingInterval();
+                    paramsUpdated = true;
+                } else if (params.beaconPeriod > ble.getMaxAdvertisingInterval()) {
+                    params.beaconPeriod = ble.getMaxAdvertisingInterval();
+                    paramsUpdated = true;
+                }
+                if (paramsUpdated) {
+                    ble.updateCharacteristicValue(beaconPeriodChar.getValueHandle(), reinterpret_cast<uint8_t *>(&params.beaconPeriod), sizeof(uint16_t));
+                }
+            }
+        } else if (handle == resetChar.getValueHandle()) {
+            INFO("Reset triggered from Config Service, resetting to defaults");
+            resetToDefaults();
+        }
+        updateCharacteristicValues();
+        params.isConfigured = true; // some configuration data has been passed, on disconnect switch to advertising mode.
+    }
+
+    /*
+     * Reset the default values.
+     */
+    void resetToDefaults(void) {
+        INFO("Resetting to defaults");
+        // General
+        params.lockedState      = false;
+        memset(params.lock, 0, sizeof(Lock_t));
+        params.flags            = 0x10;
+        memcpy(params.advPowerLevels, defaultAdvPowerLevels, sizeof(PowerLevels_t));
+        params.txPowerMode      = TX_POWER_MODE_LOW;
+        params.beaconPeriod     = 1000;
+        
+        // TLM Frame
+        params.tlmVersion = defaultTlmVersion;
+        params.tlmBeaconPeriod = defaultTlmAdvPeriod;
+        params.tlmEnabled = tlmIsSet;
+        
+        // URL Frame
+        memcpy(params.uriData, defaultUriData, URI_DATA_MAX);
+        params.uriDataLength    = defaultUriDataLength;
+        params.uriBeaconPeriod  = defaultUriAdvPeriod;
+        params.uriEnabled = urlIsSet;
+        
+        // UID Frame
+        memcpy(params.uidNamespaceID, defaultUidNamespaceID, UID_NAMESPACEID_SIZE);
+        memcpy(params.uidInstanceID,  defaultUidInstanceID,  UID_INSTANCEID_SIZE);
+        params.uidBeaconPeriod = defaultUidAdvPeriod;
+        params.uidEnabled = uidIsSet;
+        
+        updateCharacteristicValues();
+    }
+
+    /*
+     * Internal helper function used to update the GATT database following any
+     * change to the internal state of the service object.
+     */
+    void updateCharacteristicValues(void) {
+        ble.updateCharacteristicValue(lockedStateChar.getValueHandle(), &params.lockedState, 1);
+        ble.updateCharacteristicValue(uriDataChar.getValueHandle(), params.uriData, params.uriDataLength); // TODO: this isnt updating the initial URI in config mode, need to figure out why.
+        INFO("updateCharacteristicValues - URI, %s : %d",params.uriData, params.uriDataLength);
+        ble.updateCharacteristicValue(flagsChar.getValueHandle(), &params.flags, 1);
+        ble.updateCharacteristicValue(beaconPeriodChar.getValueHandle(),
+                                      reinterpret_cast<uint8_t *>(&params.beaconPeriod), sizeof(uint16_t));
+        ble.updateCharacteristicValue(txPowerModeChar.getValueHandle(), &params.txPowerMode, 1);
+        ble.updateCharacteristicValue(advPowerLevelsChar.getValueHandle(),
+                                      reinterpret_cast<uint8_t *>(params.advPowerLevels), sizeof(PowerLevels_t));
+    }
+
+private:
+    void lockAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
+        if (params.lockedState) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
+        } else if (authParams->len != sizeof(Lock_t)) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
+        } else if (authParams->offset != 0) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
+        } else {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
+        }
+    }
+
+
+    void unlockAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
+        if ((!params.lockedState) && (authParams->len == sizeof(Lock_t))) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
+        } else if (authParams->len != sizeof(Lock_t)) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
+        } else if (authParams->offset != 0) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
+        } else if (memcmp(authParams->data, params.lock, sizeof(Lock_t)) != 0) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
+        } else {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
+        }
+    }
+
+    void uriDataWriteAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
+        if (params.lockedState) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
+        } else if (authParams->offset != 0) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
+        } else {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
+        }
+    }
+
+    void powerModeAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
+        if (params.lockedState) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
+        } else if (authParams->len != sizeof(uint8_t)) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
+        } else if (authParams->offset != 0) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
+        } else if (*((uint8_t *)authParams->data) >= NUM_POWER_MODES) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_WRITE_NOT_PERMITTED;
+        } else {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
+        }
+    }
+
+    template <typename T>
+    void basicAuthorizationCallback(GattWriteAuthCallbackParams *authParams) {
+        if (params.lockedState) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INSUF_AUTHORIZATION;
+        } else if (authParams->len != sizeof(T)) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_ATT_VAL_LENGTH;
+        } else if (authParams->offset != 0) {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_ATTERR_INVALID_OFFSET;
+        } else {
+            authParams->authorizationReply = AUTH_CALLBACK_REPLY_SUCCESS;
+        }
+    }
+
+    BLEDevice           &ble;
+    Params_t            &params;
+    Ticker              timeSinceBootTick;
+    Timeout             switchFrame;
+// Default value that is restored on reset
+    PowerLevels_t       &defaultAdvPowerLevels; // this goes into the advertising frames (radio power measured at 1m from device)
+    PowerLevels_t       &radioPowerLevels;   // this configures the power levels of the radio
+    uint8_t             lockedState;
+    bool                initSucceeded;
+    uint8_t             resetFlag;
+    bool                switchFlag;
+
+//UID Default value that is restored on reset
+    UIDNamespaceID_t    defaultUidNamespaceID;
+    UIDInstanceID_t     defaultUidInstanceID;
+    float               defaultUidAdvPeriod;
+    int8_t              defaultUidPower;
+    uint16_t            uidRFU;
+    bool                uidIsSet;
+
+//URI  Default value that is restored on reset
+    uint8_t             defaultUriDataLength;
+    UriData_t           defaultUriData;
+    int8_t              defaultUrlPower;
+    float               defaultUriAdvPeriod;
+    bool                urlIsSet;
+
+//TLM  Default value that is restored on reset
+    uint8_t             defaultTlmVersion;
+    float               defaultTlmAdvPeriod;
+    volatile uint16_t   TlmBatteryVoltage;
+    volatile uint16_t   TlmBeaconTemp;
+    volatile uint32_t   TlmPduCount;
+    volatile uint32_t   TlmTimeSinceBoot;
+    bool                tlmIsSet;
+
+    ReadOnlyGattCharacteristic<uint8_t>        lockedStateChar;
+    WriteOnlyGattCharacteristic<Lock_t>        lockChar;
+    GattCharacteristic                         uriDataChar;
+    WriteOnlyGattCharacteristic<Lock_t>        unlockChar;
+    ReadWriteGattCharacteristic<uint8_t>       flagsChar;
+    ReadWriteGattCharacteristic<PowerLevels_t> advPowerLevelsChar;
+    ReadWriteGattCharacteristic<uint8_t>       txPowerModeChar;
+    ReadWriteGattCharacteristic<uint16_t>      beaconPeriodChar;
+    WriteOnlyGattCharacteristic<uint8_t>       resetChar;
+
+};
+
+#endif  // SERVICES_EDDYSTONEBEACONCONFIGSERVICE_H_
\ No newline at end of file
--- a/ble/services/EddystoneService.h	Tue Sep 29 09:54:18 2015 +0100
+++ b/ble/services/EddystoneService.h	Tue Sep 29 09:54:18 2015 +0100
@@ -19,7 +19,7 @@
 
 #include "ble/BLE.h"
 #include "mbed.h"
-
+#include "CircularBuffer.h"
 static const uint8_t BEACON_EDDYSTONE[] = {0xAA, 0xFE};
 
 //Debug is disabled by default
@@ -48,19 +48,21 @@
 class EddystoneService
 {
 public:
-    /**
-     * @brief Transmission Power Modes for UriBeacon
-     */
+    enum FrameTypes {
+        NONE,
+        url,
+        uid,
+        tlm
+    };
 
-    static const int ADVERTISING_INTERVAL_MSEC = 1000;  // Advertising interval for config service.
     static const int SERVICE_DATA_MAX = 31;             // Maximum size of service data in ADV packets
 
     // There are currently 3 subframes defined, URI, UID, and TLM
 #define EDDYSTONE_MAX_FRAMETYPE 3
     void (*frames[EDDYSTONE_MAX_FRAMETYPE])(uint8_t *, uint32_t);
-    uint8_t frameIndex;
     static const int URI_DATA_MAX = 18;
     typedef uint8_t  UriData_t[URI_DATA_MAX];
+    CircularBuffer<FrameTypes,EDDYSTONE_MAX_FRAMETYPE> overflow;
 
     // UID Frame Type subfields
     static const int UID_NAMESPACEID_SIZE = 10;
@@ -84,7 +86,11 @@
     *  @param RFU         2B of RFU, initialized to 0x0000 and not broadcast, included for future reference.
     *
     */
-    void setUIDFrameData(int8_t power, UIDNamespaceID_t namespaceID, UIDInstanceID_t instanceID, uint16_t RFU = 0x0000) {
+    void setUIDFrameData(int8_t power, UIDNamespaceID_t namespaceID, UIDInstanceID_t instanceID, uint32_t uidAdvPeriodIn, uint16_t RFU = 0x0000) {
+        if(0 == uidAdvPeriodIn){
+            uidIsSet = false;
+            return;
+        }
         if(power > 20) {
             power = 20;
         }
@@ -95,6 +101,8 @@
         memcpy(defaultUidNamespaceID, namespaceID, UID_NAMESPACEID_SIZE);
         memcpy(defaultUidInstanceID,  instanceID,  UID_INSTANCEID_SIZE);
         uidRFU = (uint16_t)RFU; // this is probably bad form, but it doesnt really matter yet.
+        uidAdvPeriod = uidAdvPeriodIn;
+        uidIsSet = true; // set toggle to advertise UID frames
         return;
     }
 
@@ -115,12 +123,18 @@
             defaultUidPower = -100;
         }
         Data[index++] = defaultUidPower;                    // 1B  Power @ 0meter
+        DBG("UID NamespaceID = '0x");
         for(int x = 0; x < UID_NAMESPACEID_SIZE; x++) {     // 10B Namespce ID
             Data[index++] = defaultUidNamespaceID[x];
+            DBG("%x,",defaultUidNamespaceID[x]);
         }
+        DBG("'\r\n");
+        DBG("UID InstancdID = '0x");
         for(int x = 0; x< UID_INSTANCEID_SIZE; x++) {       // 6B  Instance ID
             Data[index++] = defaultUidInstanceID[x];
+            DBG("%x,",defaultUidInstanceID[x]);
         }
+        DBG("'\r\n");
         if(0 != uidRFU) {                                // 2B RFU, include if non-zero, otherwise ignore
             Data[index++] = (uint8_t)(uidRFU >> 0);
             Data[index++] = (uint8_t)(uidRFU >> 8);
@@ -133,14 +147,21 @@
     *  Set Eddystone URL Frame information.
     *  @param[in] power   TX Power in dB measured at 0 meters from the device.
     *  @param url         URL to encode
+    *  @param urlAdvPeriodIn How long to advertise the URL frame (measured in # of adv periods)
     *  @return            false on success, true on failure.
     */
-    bool setURLFrameData(int8_t power, const char * url) {
+    bool setURLFrameData(int8_t power, const char * urlIn, uint32_t urlAdvPeriodIn) {
+        if(0 == urlAdvPeriodIn){
+            urlIsSet = false;
+            return false;
+        }
         defaultUrlPower = power;
-        encodeURL(url, defaultUriData, defaultUriDataLength); // encode URL to URL Formatting
+        encodeURL(urlIn, defaultUriData, defaultUriDataLength); // encode URL to URL Formatting
         if (defaultUriDataLength > URI_DATA_MAX) {
             return true; // error, URL is too big
         }
+        urlAdvPeriod = urlAdvPeriodIn;
+        urlIsSet = true;
         return false;
     }
 
@@ -164,16 +185,23 @@
     /*
     *  Set Eddystone TLM Frame information.
     *  @param[in] Version    of the TLM beacon data format
+    *  @param[in] advPeriod  how often to advertise the TLM frame for (in minutes)
     *  @param batteryVoltage in milivolts
     *  @param beaconTemp     in 8.8 floating point notation
     *
     */
-    void setTLMFrameData(uint8_t version, uint16_t batteryVoltage, uint16_t beaconTemp, uint32_t pduCount = 0, uint32_t timeSinceBoot = 0) {
+    void setTLMFrameData(uint8_t version = 0, uint32_t advPeriod = 60, uint16_t batteryVoltage = 0, uint16_t beaconTemp = 0, uint32_t pduCount = 0, uint32_t timeSinceBoot = 0) {
+        if(0 == advPeriod){
+            tlmIsSet = false;
+            return;
+        }
         TlmVersion = version;
         TlmBatteryVoltage = batteryVoltage;
         TlmBeaconTemp = beaconTemp;
         TlmPduCount = pduCount; // reset
         TlmTimeSinceBoot = timeSinceBoot; // reset
+        TlmAdvPeriod = advPeriod;
+        tlmIsSet = true; // TLM Data has been enabled
         return;
     }
 
@@ -191,14 +219,14 @@
         Data[index++] = (uint8_t)(TlmBatteryVoltage>>0);   // Battery Voltage[1]
         Data[index++] = (uint8_t)(TlmBeaconTemp>>8);       // Beacon Temp[0]
         Data[index++] = (uint8_t)(TlmBeaconTemp>>0);       // Beacon Temp[1]
-        Data[index++] = (uint8_t)(TlmPduCount>>24);         // PDU Count [0]
-        Data[index++] = (uint8_t)(TlmPduCount>>16);         // PDU Count [1]
-        Data[index++] = (uint8_t)(TlmPduCount>>8);        // PDU Count [2]
-        Data[index++] = (uint8_t)(TlmPduCount>>0);        // PDU Count [3]
-        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>24);    // Time Since Boot [0]
-        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>16);    // Time Since Boot [1]
-        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>8);   // Time Since Boot [2]
-        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>0);   // Time Since Boot [3]
+        Data[index++] = (uint8_t)(TlmPduCount>>24);        // PDU Count [0]
+        Data[index++] = (uint8_t)(TlmPduCount>>16);        // PDU Count [1]
+        Data[index++] = (uint8_t)(TlmPduCount>>8);         // PDU Count [2]
+        Data[index++] = (uint8_t)(TlmPduCount>>0);         // PDU Count [3]
+        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>24);   // Time Since Boot [0]
+        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>16);   // Time Since Boot [1]
+        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>8);    // Time Since Boot [2]
+        Data[index++] = (uint8_t)(TlmTimeSinceBoot>>0);    // Time Since Boot [3]
         DBG("constructURLFrame: %d, %d",maxSize,index);
         return index;
     }
@@ -264,10 +292,13 @@
 //        }
 //        printf("\r\n");
         ble.clearAdvertisingPayload();
+        ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
+        ble.setAdvertisingInterval(100);
         ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
         ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, BEACON_EDDYSTONE, sizeof(BEACON_EDDYSTONE));
         ble.accumulateAdvertisingPayload(GapAdvertisingData::SERVICE_DATA, serviceData, serviceDataLen);
 
+
         return true;
     }
 
@@ -277,7 +308,7 @@
     *   This function exists because of time constraints in the radioNotificationCallback, so it is effectively
     *   broken up into two functions.
     */
-    void swapOutFrames(void) {
+    void swapOutFrames(FrameTypes frameType) {
         uint8_t serviceData[SERVICE_DATA_MAX];
         unsigned serviceDataLen = 0;
         //hard code in the eddystone UUID
@@ -285,37 +316,114 @@
         serviceData[serviceDataLen++] = BEACON_EDDYSTONE[1];
 
         // if certain frames are not enabled, then skip them. Worst case TLM is always enabled
-        switch(frameIndex) {
-            case 1:
+        switch(frameType) {
+            case tlm:
+                // TLM frame
+                if(tlmIsSet) {
+                    DBG("Swapping in TLM Frame: version=%x, Batt=%d, Temp = %d, PDUCnt = %d, TimeSinceBoot=%d",TlmVersion, TlmBatteryVoltage, TlmBeaconTemp, TlmPduCount, TlmTimeSinceBoot);
+                    serviceDataLen += constructTLMFrame(serviceData+serviceDataLen,20);
+                    DBG("\t Swapping in TLM Frame: len=%d",serviceDataLen);
+                    updateAdvPacket(serviceData,serviceDataLen);
+                }
+                break;
+            case url:
                 // URL Frame
                 if(urlIsSet) {
-                    INFO("Swapping in URL Frame: Power: %d",defaultUrlPower);
+                    DBG("Swapping in URL Frame: Power: %d",defaultUrlPower);
                     serviceDataLen += constructURLFrame(serviceData+serviceDataLen,20);
                     DBG("\t Swapping in URL Frame: len=%d ",serviceDataLen);
                     updateAdvPacket(serviceData,serviceDataLen);
-                    switchFlag = false;
-                    frameIndex++;
-                    break;
+                    //switchFlag = false;
                 }
-            case 2:
+                break;
+            case uid:
                 // UID Frame
                 if(uidIsSet) {
-                    INFO("Swapping in UID Frame: Power: %d",defaultUidPower);
+                    DBG("Swapping in UID Frame: Power: %d",defaultUidPower);
                     serviceDataLen += constructUIDFrame(serviceData+serviceDataLen,20);
                     DBG("\t Swapping in UID Frame: len=%d",serviceDataLen);
                     updateAdvPacket(serviceData,serviceDataLen);
-                    switchFlag = false;
-                    frameIndex++;
-                    break;
+                    //switchFlag = false;
                 }
+                break;
             default:
-                // TLM frame
-                INFO("Swapping in TLM Frame: version=%x, Batt=%d, Temp = %d, PDUCnt = %d, TimeSinceBoot=%d",TlmVersion, TlmBatteryVoltage, TlmBeaconTemp, TlmPduCount, TlmTimeSinceBoot);
-                serviceDataLen += constructTLMFrame(serviceData+serviceDataLen,20);
-                DBG("\t Swapping in TLM Frame: len=%d",serviceDataLen);
-                updateAdvPacket(serviceData,serviceDataLen);
-                frameIndex++;
-                break;
+                ERR("You have not initialized a Frame yet, please initialize one before starting a beacon");
+                ERR("uidIsSet = %d, urlIsSet = %d, tlmIsSet = %d", uidIsSet, urlIsSet, tlmIsSet);
+        }
+    }
+
+    /*
+    * Callback to swap in URL frame
+    */
+    void urlCallback(void) {
+        DBG("urlCallback");
+        if( false == advLock) {
+            advLock = true;
+            DBG("advLock = url")
+            frameIndex = url;
+            swapOutFrames(frameIndex);
+            ble.startAdvertising();
+        } else {
+            // Someone else is broadcasting, toss it into the overflow buffer to retransmit when free
+            INFO("URI(%d) cannot complete, %d is currently broadcasting",url, frameIndex);
+            FrameTypes x = url;
+            overflow.push(x);
+        }
+        return;
+    }
+
+    /*
+    * Callback to swap in UID frame
+    */
+    void uidCallback(void) {
+        DBG("uidCallback");
+        if( false == advLock) {
+            advLock = true;
+            DBG("advLock = uid")
+            frameIndex = uid;
+            swapOutFrames(frameIndex);
+            ble.startAdvertising();
+        } else {
+            // Someone else is broadcasting, toss it into the overflow buffer to retransmit when free
+            INFO("UID(%d) cannot complete, %d is currently broadcasting", uid,frameIndex);
+            FrameTypes x = uid; // have to do this to satisfy cont vs volatile keywords... sigh...
+            overflow.push(x);
+        }
+        return;
+    }
+
+    /*
+    * Callback to swap in TLM frame
+    */
+    void tlmCallback(void) {
+        DBG("tlmCallback");
+        if( false == advLock) {
+            // OK to broadcast
+            advLock = true;
+            DBG("advLock = tlm")
+            frameIndex = tlm;
+            swapOutFrames(frameIndex);
+            ble.startAdvertising();
+        } else {
+            // Someone else is broadcasting, toss it into the overflow buffer to retransmit when free
+            INFO("TLM(%d) cannot complete, %d is currently broadcasting",tlm ,frameIndex);
+            FrameTypes x = tlm;
+            overflow.push(x);
+        }
+        return;
+    }
+
+    void stopAdvCallback(void) {
+        if(overflow.empty()) {
+            // if nothing left to transmit, stop
+            ble.stopAdvertising();
+            advLock = false; // unlock lock
+        } else {
+            // transmit other packets at current time index
+            FrameTypes x = NONE;
+            overflow.pop(x);
+            INFO("Re-Transmitting %d",x);
+            swapOutFrames(x);
         }
     }
 
@@ -324,47 +432,15 @@
     */
 #define EDDYSTONE_SWAPFRAME_DELAYMS 1
     void radioNotificationCallback(bool radioActive) {
-        //DBG("RadioNotificationCallback : %d, %d, %d, %d",radioActive,frameIndex,TlmPduCount,TlmTimeSinceBoot);
         // Update PDUCount
         TlmPduCount++;
-        frameIndex = frameIndex % EDDYSTONE_MAX_FRAMETYPE;
-
-
-        // True just before an frame is sent, fale just after a frame is sent
+        // True just before an frame is sent, false just after a frame is sent
         if(radioActive) {
             // Do Nothing
         } else {
-            // state machine to control which packet is being sent
-            switch(frameIndex) {
-                case 0: // TLM Frame
-                    switchFrame.attach_us(this, &EddystoneService::swapOutFrames, EDDYSTONE_SWAPFRAME_DELAYMS);
-                    switchFlag = true;
-                    break;
-                case 1: // URL Frame
-                    // switch out packets
-                    if(switchFlag) {
-                        switchFrame.attach_us(this, &EddystoneService::swapOutFrames, EDDYSTONE_SWAPFRAME_DELAYMS);
-                        switchFlag = false;
-                    } else {
-                        if((TlmPduCount % 10) == 0) { // every 10 adv packets switch the frame
-                            switchFlag = true;
-                        }
-                    }
-                    break;
-                case 2: // UIDFrame
-                    // switch out packets
-                    if(switchFlag ) {
-                        switchFrame.attach_us(this, &EddystoneService::swapOutFrames, EDDYSTONE_SWAPFRAME_DELAYMS);
-                        switchFlag = false;
-                    } else {
-                        if((TlmPduCount % 10) == 0) { // every 10 adv packets switch the frame
-                            switchFlag = true;
-                        }
-                    }
-                    break;
-            }
+            // Packet has been sent, disable advertising
+            stopAdv.attach_us(this, &EddystoneService::stopAdvCallback, 1);
         }
-
         return;
     }
 
@@ -373,102 +449,102 @@
     *   this function should be used in leu of the config service.
     *
     *   @param bleIn ble object used to broadcast eddystone information
-    *   @oaram beaconPeriodus is how often ble broadcasts are mde, in mili seconds
+    *   @param beaconPeriodus is how often ble broadcasts are mde, in mili seconds
     *   @param txPowerLevel sets the broadcasting power level.
-    *   @param uidNamespaceID 10Byte Namespace UUID
-    *   @param uidInstanceID  6Byte  Instance UUID
-    *   @param url shortened URL to broadcast (pass in as a string)
-    *   @param urlLen length of shortened url
-    *   @param tlmVersion version of telemetry data field to use (default to 0x00)
     *
     */
     EddystoneService(BLEDevice       &bleIn,
-              uint16_t        beaconPeriodus = 100,
-              uint8_t         txPowerLevel = 0,
-              uint8_t *       uidNamespaceID = NULL,
-              uint8_t *       uidInstanceID = NULL,
-              const char *    url = NULL,
-              uint8_t         urlLen = 0,
-              uint8_t         tlmVersion = 0) :
-              ble(bleIn)
-    { 
-        uint8_t serviceData[SERVICE_DATA_MAX];
-        unsigned serviceDataLen = 0;
-        ERR("This function is not fully implemented yet, dont use it!!");
-        // Check optional frames, set their 'isSet' flags appropriately
-        if((uidNamespaceID != NULL) & (uidInstanceID != NULL)) {
-            uidIsSet = true;
-            setUIDFrameData(txPowerLevel,uidNamespaceID, uidInstanceID);
-        } else {
-            uidIsSet = false;
-        }
-        if(url != NULL) {
-            urlIsSet = true;
-            setURLFrameData(txPowerLevel,url);
-        } else {
-            uidIsSet = false;
+                     uint16_t        beaconPeriodus = 100,
+                     uint8_t         txPowerIn = 0) :
+        ble(bleIn),
+        advPeriodus(beaconPeriodus),
+        txPower(txPowerIn),
+        advLock(false),
+        frameIndex(NONE) {
+
+    }
+
+    /*
+    * @breif this function starts eddystone advertising based on configured frames.
+    */
+    void start(void) {
+        // Initialize Frame transition, start with URL to pass eddystone validator app on first try
+        if (urlIsSet) {
+            frameIndex = url;
+            urlTicker.attach(this, &EddystoneService::urlCallback, urlAdvPeriod);
+            DBG("attached urlCallback every %d seconds", urlAdvPeriod);
         }
-        // Default TLM frame to version 0x00, start all values at zero to be spec compliant.
-        setTLMFrameData(tlmVersion, 0x00,0x00);
-
-        // Initialize Frame transition
-        frameIndex = 0;
-        uidRFU = 0;
-        switchFlag = true;
-
-        /* Reinitialize the BLE stack. This will clear away the existing services and advertising state. */
-        ble.shutdown();
-        ble.init();
-        ble.setTxPower(txPowerLevel);
-        ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
-        ble.setAdvertisingInterval(beaconPeriodus);
+        if (uidIsSet) {
+            frameIndex = uid;
+            uidTicker.attach(this, &EddystoneService::uidCallback, uidAdvPeriod);
+            DBG("attached uidCallback every %d seconds", uidAdvPeriod);
+        }
+        if(tlmIsSet) {
+            frameIndex = tlm;
+            // Make double sure the PDUCount and TimeSinceBoot fields are set to zero at reset
+            updateTlmPduCount(0);
+            updateTlmTimeSinceBoot(0);
+            timeSinceBootTick.attach(this,&EddystoneService::tsbCallback,0.1); // incriment the TimeSinceBoot ticker every 0.1s
+            tlmTicker.attach(this, &EddystoneService::tlmCallback, TlmAdvPeriod);
+            DBG("attached tlmCallback every %d seconds", TlmAdvPeriod);
+        }
+        if(NONE == frameIndex) {
+            error("No Frames were Initialized! Please initialize a frame before starting an eddystone beacon.");
+        }
+        //uidRFU = 0;
 
-        // Make double sure the PDUCount and TimeSinceBoot fields are set to zero at reset
-        updateTlmPduCount(0);
-        updateTlmTimeSinceBoot(0);
-
-        // Construct TLM Frame in initial advertising.
-        serviceData[serviceDataLen++] = BEACON_EDDYSTONE[0];
-        serviceData[serviceDataLen++] = BEACON_EDDYSTONE[1];
-        serviceDataLen += constructTLMFrame(serviceData+serviceDataLen,SERVICE_DATA_MAX);
-
-        updateAdvPacket(serviceData, serviceDataLen);
-        ble.gap().startAdvertising();
-        ble.gap().onRadioNotification(this,&EddystoneService::radioNotificationCallback);
-        timeSinceBootTick.attach(this,&EddystoneService::tsbCallback,0.1); // incriment the TimeSinceBoot ticker every 0.1s
-
+          ble.setTxPower(txPower);
+//        ble.setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED);
+//        ble.setAdvertisingInterval(advPeriodus);
+//        ble.gap().startAdvertising();
+          ble.gap().onRadioNotification(this,&EddystoneService::radioNotificationCallback);
     }
 
 private:
 
-
+    // Eddystone Variables
     BLEDevice           &ble;
-    Ticker              timeSinceBootTick;
-    Timeout             switchFrame;
-// Default value that is restored on reset
-    size_t              defaultUriDataLength;
+    uint16_t            advPeriodus;
+    uint8_t             txPower;
+    Ticker              timeSinceBootTick;  // counter that counts time since boot
+    volatile bool       advLock;
+    volatile FrameTypes frameIndex;
+    Timeout             stopAdv;
+
+
+    // URI Frame Variables
+    uint8_t             defaultUriDataLength;
     UriData_t           defaultUriData;
+    int8_t              defaultUrlPower;
+    bool                urlIsSet;       // flag that enables / disable URI Frames
+    uint32_t            urlAdvPeriod;   // how long the url frame will be advertised for
+    Ticker              urlTicker;
+
+    // UID Frame Variables
     UIDNamespaceID_t    defaultUidNamespaceID;
     UIDInstanceID_t     defaultUidInstanceID;
     int8_t              defaultUidPower;
-    int8_t              defaultUrlPower;
     uint16_t            uidRFU;
-    bool                uidIsSet;
-    bool                urlIsSet;
-    bool switchFlag;
+    bool                uidIsSet;       // flag that enables / disable UID Frames
+    uint32_t            uidAdvPeriod;   // how long the uid frame will be advertised for
+    Ticker              uidTicker;
 
-// Private Variables for Telemetry Data
+    // TLM Frame Variables
     uint8_t                      TlmVersion;
     volatile uint16_t            TlmBatteryVoltage;
     volatile uint16_t            TlmBeaconTemp;
     volatile uint32_t            TlmPduCount;
     volatile uint32_t            TlmTimeSinceBoot;
+    bool                         tlmIsSet; // flag that enables / disables TLM frames
+    uint32_t                     TlmAdvPeriod;  // number of minutes between adv frames
+    Ticker                       tlmTicker;
 
 public:
     /*
      *  Encode a human-readable URI into the binary format defined by URIBeacon spec (https://github.com/google/uribeacon/tree/master/specification).
      */
-    static void encodeURL(const char *uriDataIn, UriData_t uriDataOut, size_t &sizeofURIDataOut) {
+    static void encodeURL(const char *uriDataIn, UriData_t uriDataOut, uint8_t &sizeofURIDataOut) {
+        DBG("Encode URL = %s",uriDataIn);
         const char *prefixes[] = {
             "http://www.",
             "https://www.",
@@ -528,6 +604,7 @@
                 }
             }
             /* This is the default case where we've got an ordinary character which doesn't match a suffix. */
+            INFO("Encoding URI: No Suffix Found");
             if (i == NUM_SUFFIXES) {
                 uriDataOut[sizeofURIDataOut++] = *uriDataIn;
                 ++uriDataIn;