/* 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.

*/

#include <stdio.h>

#include <string.h>

#include "GapAdvertisingData.h"

/**************************************************************************/

/*!

\brief Creates a new GapAdvertisingData instance

\par EXAMPLE

\code

\endcode

*/

/**************************************************************************/

GapAdvertisingData::GapAdvertisingData(void) : _payload(), _payloadLen(0), _appearance(GENERIC_TAG) {

/* empty */

}

/**************************************************************************/

/*!

Destructor

*/

/**************************************************************************/

GapAdvertisingData::~GapAdvertisingData(void)

{

}

/**************************************************************************/

/*!

\brief Adds advertising data based on the specified AD type (see

DataType)

\args[in] advDataType The Advertising 'DataType' to add

\args[in] payload Pointer to the payload contents

\args[in] len Size of the payload in bytes

\returns ble_error_t

\retval BLE_ERROR_NONE

Everything executed properly

\retval BLE_ERROR_BUFFER_OVERFLOW

The specified data would cause the advertising buffer

to overflow

\par EXAMPLE

\code

\endcode

*/

/**************************************************************************/

ble_error_t GapAdvertisingData::addData(DataType advDataType, const uint8_t *payload, uint8_t len)

{

/* ToDo: Check if an AD type already exists and if the existing */

/* value is exclusive or not (flags, etc.) */

/* Make sure we don't exceed the 31 byte payload limit */

if (_payloadLen + len + 2 > GAP_ADVERTISING_DATA_MAX_PAYLOAD) {

return BLE_ERROR_BUFFER_OVERFLOW;

}

/* Field length */

memset(&_payload[_payloadLen], len + 1, 1);

_payloadLen++;

/* Field ID */

memset(&_payload[_payloadLen], (uint8_t)advDataType, 1);

_payloadLen++;

/* Payload */

memcpy(&_payload[_payloadLen], payload, len);

_payloadLen += len;

return BLE_ERROR_NONE;

}

/**************************************************************************/

/*!

\brief Helper function to add APPEARANCE data to the advertising

payload

\args[in] appearance The APPEARANCE value to add

\returns ble_error_t

\retval BLE_ERROR_NONE

Everything executed properly

\retval BLE_ERROR_BUFFER_OVERFLOW

The specified data would cause the advertising buffer

to overflow

\par EXAMPLE

\code

\endcode

*/

/**************************************************************************/

ble_error_t GapAdvertisingData::addAppearance(Appearance appearance)

{

_appearance = appearance;

return addData(GapAdvertisingData::APPEARANCE, (uint8_t *)&appearance, 2);

}

/**************************************************************************/

/*!

\brief Helper function to add FLAGS data to the advertising

payload

\args[in] flag The FLAGS value to add

\par LE_LIMITED_DISCOVERABLE

The peripheral is discoverable for a limited period of

time

\par LE_GENERAL_DISCOVERABLE

The peripheral is permanently discoverable

\par BREDR_NOT_SUPPORTED

This peripheral is a Bluetooth Low Energy only device

(no EDR support)

\returns ble_error_t

\retval BLE_ERROR_NONE

Everything executed properly

\retval BLE_ERROR_BUFFER_OVERFLOW

The specified data would cause the advertising buffer

to overflow

\par EXAMPLE

\code

\endcode

*/

/**************************************************************************/

ble_error_t GapAdvertisingData::addFlags(uint8_t flags)

{

return addData(GapAdvertisingData::FLAGS, &flags, 1);

}

/**************************************************************************/

/*!

\brief Helper function to add TX_POWER_LEVEL data to the

advertising payload

\args[in] flag The TX_POWER_LEVEL value to add

\returns ble_error_t

\retval BLE_ERROR_NONE

Everything executed properly

\retval BLE_ERROR_BUFFER_OVERFLOW

The specified data would cause the advertising buffer

to overflow

\par EXAMPLE

\code

\endcode

*/

/**************************************************************************/

ble_error_t GapAdvertisingData::addTxPower(int8_t txPower)

{

/* ToDo: Basic error checking to make sure txPower is in range */

return addData(GapAdvertisingData::TX_POWER_LEVEL, (uint8_t *)&txPower, 1);

}

/**************************************************************************/

/*!

\brief Clears the payload and resets the payload length counter

*/

/**************************************************************************/

void GapAdvertisingData::clear(void)

{

memset(&_payload, 0, GAP_ADVERTISING_DATA_MAX_PAYLOAD);

_payloadLen = 0;

}

/**************************************************************************/

/*!

\brief Returns a pointer to the the current payload

\returns A pointer to the payload

*/

/**************************************************************************/

const uint8_t *GapAdvertisingData::getPayload(void) const

{

return (_payloadLen > 0) ? _payload : NULL;

}

/**************************************************************************/

/*!

\brief Returns the current payload length (0..31 bytes)

\returns The payload length in bytes

*/

/**************************************************************************/

uint8_t GapAdvertisingData::getPayloadLen(void) const

{

return _payloadLen;

}

/**************************************************************************/

/*!

\brief Returns the 16-bit appearance value for this device

\returns The 16-bit appearance value

*/

/**************************************************************************/

uint16_t GapAdvertisingData::getAppearance(void) const

{

return (uint16_t)_appearance;

}