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ambiq-hal-sys/ambiq-sparkfun-sdk/third_party/exactle/ble-profiles/sources/profiles/gatt/gatt_api.h
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/*************************************************************************************************/
/*!
* \file
*
* \brief GATT profile.
*
* Copyright (c) 2011-2019 Arm Ltd.
*
* Copyright (c) 2019 Packetcraft, Inc.
*
* 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 GATT_API_H
#define GATT_API_H
#include "att_api.h"
#ifdef __cplusplus
extern "C" {
#endif
/*! \addtogroup GATT_PROFILE
* \{ */
/**************************************************************************************************
Macros
**************************************************************************************************/
/*! \brief Enumeration of handle indexes of characteristics to be discovered */
enum
{
GATT_SC_HDL_IDX, /*!< \brief Service changed */
GATT_SC_CCC_HDL_IDX, /*!< \brief Service changed client characteristic configuration descriptor */
GATT_CSF_HDL_IDX, /*!< \brief Client Supported Features */
GATT_HDL_LIST_LEN /*!< \brief Handle list length */
};
/**************************************************************************************************
Function Declarations
**************************************************************************************************/
/*************************************************************************************************/
/*!
* \brief Perform service and characteristic discovery for GATT service. Note that pHdlList
* must point to an array of handles of length \ref GATT_HDL_LIST_LEN. If discovery is
* successful the handles of discovered characteristics and descriptors will be set
* in pHdlList.
*
* \param connId Connection identifier.
* \param pHdlList Characteristic handle list.
*
* \return None.
*/
/*************************************************************************************************/
void GattDiscover(dmConnId_t connId, uint16_t *pHdlList);
/*************************************************************************************************/
/*!
* \brief Process a value received in an ATT read response, notification, or indication
* message. Parameter pHdlList must point to an array of length \ref GATT_HDL_LIST_LEN.
* If the attribute handle of the message matches a handle in the handle list the value
* is processed, otherwise it is ignored.
*
* \param pHdlList Characteristic handle list.
* \param pMsg ATT callback message.
*
* \return \ref ATT_SUCCESS if handle is found, \ref ATT_ERR_NOT_FOUND otherwise.
*/
/*************************************************************************************************/
uint8_t GattValueUpdate(uint16_t *pHdlList, attEvt_t *pMsg);
/*************************************************************************************************/
/*!
* \brief ATTS read callback for gatt service.
*
* \param connId Connection identifier.
* \param handle ATT handle.
* \param operation Operation selected.
* \param offset Offset to begin read from.
* \param pAttr Attribute to read from.
*
* \return ATT status.
*/
/*************************************************************************************************/
uint8_t GattReadCback(dmConnId_t connId, uint16_t handle, uint8_t operation,
uint16_t offset, attsAttr_t *pAttr);
/*************************************************************************************************/
/*!
* \brief ATTS write callback for gatt service.
*
* \param connId Connection identifier.
* \param handle ATT handle.
* \param operation Operation selected.
* \param offset Offset to begin write.
* \param len Length of write.
* \param pValue Pointer to buffer to write.
* \param pAttr Attribute to write to.
*
* \return ATT status.
*/
/*************************************************************************************************/
uint8_t GattWriteCback(dmConnId_t connId, uint16_t handle, uint8_t operation,
uint16_t offset, uint16_t len, uint8_t *pValue, attsAttr_t *pAttr);
/*************************************************************************************************/
/*!
* \brief Set Index of the Service Changed CCCD in the ATT Server.
*
* \param idx Index of the Service Changed CCCD in the ATT Server.
*
* \return None.
*/
/*************************************************************************************************/
void GattSetSvcChangedIdx(uint8_t idx);
/*************************************************************************************************/
/*!
* \brief Send Service Change Indications to the specified connections if they are configured to
* do so.
*
* \param connId DM Connection identifier or \ref DM_CONN_ID_NONE to send to all connections.
* \param start start handle for service changed value.
* \param end end handle for service changed value.
*
* \return None.
*/
/*************************************************************************************************/
void GattSendServiceChangedInd(dmConnId_t connId, uint16_t start, uint16_t end);
/*! \} */ /* GATT_PROFILE */
#ifdef __cplusplus
};
#endif
#endif /* GATT_API_H */
ambiq-hal-sys/ambiq-sparkfun-sdk/third_party/exactle/ble-profiles/sources/profiles/gatt/gatt_main.c
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/*************************************************************************************************/
/*!
* \file
*
* \brief GATT profile.
*
* Copyright (c) 2011-2019 Arm Ltd.
*
* Copyright (c) 2019 Packetcraft, Inc.
*
* 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 <string.h>
#include "wsf_types.h"
#include "wsf_assert.h"
#include "util/bstream.h"
#include "app_api.h"
#include "gatt_api.h"
#include "svc_core.h"
#include "att_api.h"
/**************************************************************************************************
Data Types
**************************************************************************************************/
/* Control block. */
typedef struct
{
bool_t svcChangedCccdIdxSet; /* Check if Service Changed CCCD index has been initialized. */
uint8_t svcChangedCccdIdx; /* Stored index of Service Changed CCCD. */
} gattServCb_t;
/**************************************************************************************************
Local Variables
**************************************************************************************************/
/* Control block. */
gattServCb_t gattServCb;
/*! GATT service characteristics for discovery */
/*! Service changed */
static const attcDiscChar_t gattSc =
{
attScChUuid,
0
};
/*! Service changed client characteristic configuration descriptor */
static const attcDiscChar_t gattScCcc =
{
attCliChCfgUuid,
ATTC_SET_DESCRIPTOR
};
/*! Client supported features */
static const attcDiscChar_t gattCsf =
{
attGattCsfChUuid,
0
};
/*! List of characteristics to be discovered; order matches handle index enumeration */
static const attcDiscChar_t *gattDiscCharList[] =
{
&gattSc, /* Service changed */
&gattScCcc, /* Service changed client characteristic configuration descriptor */
&gattCsf /* Client supported features */
};
/* sanity check: make sure handle list length matches characteristic list length */
WSF_CT_ASSERT(GATT_HDL_LIST_LEN == ((sizeof(gattDiscCharList) / sizeof(attcDiscChar_t *))));
/*************************************************************************************************/
/*!
* \brief Perform service and characteristic discovery for GATT service. Parameter pHdlList
* must point to an array of length GATT_HDL_LIST_LEN. If discovery is successful
* the handles of discovered characteristics and descriptors will be set in pHdlList.
*
* \param connId Connection identifier.
* \param pHdlList Characteristic handle list.
*
* \return None.
*/
/*************************************************************************************************/
void GattDiscover(dmConnId_t connId, uint16_t *pHdlList)
{
AppDiscFindService(connId, ATT_16_UUID_LEN, (uint8_t *) attGattSvcUuid,
GATT_HDL_LIST_LEN, (attcDiscChar_t **) gattDiscCharList, pHdlList);
}
/*************************************************************************************************/
/*!
* \brief Process a value received in an ATT read response, notification, or indication
* message. Parameter pHdlList must point to an array of length GATT_HDL_LIST_LEN.
* If the attribute handle of the message matches a handle in the handle list the value
* is processed, otherwise it is ignored.
*
* \param pHdlList Characteristic handle list.
* \param pMsg ATT callback message.
*
* \return ATT_SUCCESS if handle is found, ATT_ERR_NOT_FOUND otherwise.
*/
/*************************************************************************************************/
uint8_t GattValueUpdate(uint16_t *pHdlList, attEvt_t *pMsg)
{
uint8_t status = ATT_SUCCESS;
/* service changed */
if (pMsg->handle == pHdlList[GATT_SC_HDL_IDX])
{
/* perform service changed */
AppDiscServiceChanged(pMsg);
}
/* handle not found in list */
else
{
status = ATT_ERR_NOT_FOUND;
}
return status;
}
/*************************************************************************************************/
/*!
* \brief Set Index of the Service Changed CCCD in the ATT Server.
*
* \param idx Index of the Service Changed CCCD in the ATT Server.
*
* \return None.
*/
/*************************************************************************************************/
void GattSetSvcChangedIdx(uint8_t idx)
{
gattServCb.svcChangedCccdIdxSet = TRUE;
gattServCb.svcChangedCccdIdx = idx;
}
/*************************************************************************************************/
/*!
* \brief Send Service Change Indications to the specified connections if they are configured to
* do so.
*
* \param connId DM Connection identifier or \ref DM_CONN_ID_NONE to send to all connections.
* \param start start handle for service changed value.
* \param end end handle for service changed value.
*
* \return None.
*/
/*************************************************************************************************/
void GattSendServiceChangedInd(dmConnId_t connId, uint16_t start, uint16_t end)
{
uint8_t svcChangedValues[4];
uint8_t *p;
if (!gattServCb.svcChangedCccdIdxSet)
{
return;
}
p = svcChangedValues;
UINT16_TO_BSTREAM(p, start);
UINT16_TO_BSTREAM(p, end);
/* If connection is not specified */
if (connId == DM_CONN_ID_NONE)
{
/* Send to all. */
for (connId = 1; connId <= DM_CONN_MAX; connId++)
{
if (AttsCccEnabled(connId, gattServCb.svcChangedCccdIdx))
{
AttsHandleValueInd(connId, GATT_SC_HDL, sizeof(svcChangedValues), svcChangedValues);
}
}
}
else
{
/* Send to only this one. */
if (AttsCccEnabled(connId, gattServCb.svcChangedCccdIdx))
{
AttsHandleValueInd(connId, GATT_SC_HDL, sizeof(svcChangedValues), svcChangedValues);
}
}
}
/*************************************************************************************************/
/*!
* \brief ATTS read callback for gatt service.
*
* \param connId Connection identifier.
* \param handle ATT handle.
* \param operation Operation selected.
* \param offset Offset to begin read from.
* \param pAttr Attribute to read from.
*
* \return ATT status.
*/
/*************************************************************************************************/
uint8_t GattReadCback(dmConnId_t connId, uint16_t handle, uint8_t operation,
uint16_t offset, attsAttr_t *pAttr)
{
switch (handle)
{
case GATT_CSF_HDL:
{
uint8_t csf[ATT_CSF_LEN];
AttsCsfGetFeatures(connId, csf, sizeof(csf));
memcpy(pAttr->pValue, csf, ATT_CSF_LEN);
}
break;
default:
break;
}
return ATT_SUCCESS;
}
/*************************************************************************************************/
/*!
* \brief ATTS write callback for gatt service.
*
* \param connId Connection identifier.
* \param handle ATT handle.
* \param operation Operation selected.
* \param offset Offset to begin write.
* \param len Length of write.
* \param pValue Pointer to buffer to write.
* \param pAttr Attribute to write to.
*
* \return ATT status.
*/
/*************************************************************************************************/
uint8_t GattWriteCback(dmConnId_t connId, uint16_t handle, uint8_t operation,
uint16_t offset, uint16_t len, uint8_t *pValue, attsAttr_t *pAttr)
{
uint8_t status;
switch (handle)
{
case GATT_CSF_HDL:
status = AttsCsfWriteFeatures(connId, offset, len, pValue);
break;
default:
status = ATT_SUCCESS;
break;
}
return status;
}