424 lines
13 KiB
C
424 lines
13 KiB
C
/**************************************************************************************************
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Filename: simplekey.c
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Revised: $Date: 2013-05-06 13:33:47 -0700 (Mon, 06 May 2013) $
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Revision: $Revision: 34153 $
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Description: Simple Keys Profile
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Copyright 2010 - 2013 Texas Instruments Incorporated. All rights reserved.
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IMPORTANT: Your use of this Software is limited to those specific rights
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granted under the terms of a software license agreement between the user
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who downloaded the software, his/her employer (which must be your employer)
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and Texas Instruments Incorporated (the "License"). You may not use this
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Software unless you agree to abide by the terms of the License. The License
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limits your use, and you acknowledge, that the Software may not be modified,
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copied or distributed unless embedded on a Texas Instruments microcontroller
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or used solely and exclusively in conjunction with a Texas Instruments radio
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frequency transceiver, which is integrated into your product. Other than for
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the foregoing purpose, you may not use, reproduce, copy, prepare derivative
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works of, modify, distribute, perform, display or sell this Software and/or
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its documentation for any purpose.
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YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
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PROVIDED “AS IS?WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
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INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
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NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
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TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
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NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
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LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
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INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
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OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
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OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
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(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
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Should you have any questions regarding your right to use this Software,
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contact Texas Instruments Incorporated at www.TI.com.
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**************************************************************************************************/
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/*********************************************************************
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* INCLUDES
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*/
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#include "bcomdef.h"
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#include "OSAL.h"
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#include "linkdb.h"
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#include "att.h"
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#include "gatt.h"
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#include "gatt_uuid.h"
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#include "gattservapp.h"
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#include "gapbondmgr.h"
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#include "simplekeys.h"
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/*********************************************************************
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* MACROS
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*/
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/*********************************************************************
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* CONSTANTS
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*/
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#define SERVAPP_NUM_ATTR_SUPPORTED 5
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/*********************************************************************
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* TYPEDEFS
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*/
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/*********************************************************************
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* GLOBAL VARIABLES
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*/
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// SK Service UUID: 0x1800
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CONST uint8 skServUUID[ATT_BT_UUID_SIZE] =
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{
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LO_UINT16(SK_SERV_UUID), HI_UINT16(SK_SERV_UUID)
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};
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// Key Pressed UUID: 0x1801
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CONST uint8 keyPressedUUID[ATT_BT_UUID_SIZE] =
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{
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LO_UINT16(SK_KEYPRESSED_UUID), HI_UINT16(SK_KEYPRESSED_UUID)
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};
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/*********************************************************************
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* EXTERNAL VARIABLES
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*/
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/*********************************************************************
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* EXTERNAL FUNCTIONS
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*/
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/*********************************************************************
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* LOCAL VARIABLES
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*/
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/*********************************************************************
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* Profile Attributes - variables
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*/
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// SK Service attribute
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static CONST gattAttrType_t skService = { ATT_BT_UUID_SIZE, skServUUID };
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// Keys Pressed Characteristic Properties
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static uint8 skCharProps = GATT_PROP_NOTIFY;
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// Key Pressed State Characteristic
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static uint8 skKeyPressed = 0;
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// Key Pressed Characteristic Configs
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static gattCharCfg_t skConfig[GATT_MAX_NUM_CONN];
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// Key Pressed Characteristic User Description
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static uint8 skCharUserDesp[16] = "Key Press State\0";
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/*********************************************************************
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* Profile Attributes - Table
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*/
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static gattAttribute_t simplekeysAttrTbl[SERVAPP_NUM_ATTR_SUPPORTED] =
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{
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// Simple Keys Service
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{
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{ ATT_BT_UUID_SIZE, primaryServiceUUID }, /* type */
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GATT_PERMIT_READ, /* permissions */
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0, /* handle */
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(uint8 *)&skService /* pValue */
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},
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// Characteristic Declaration for Keys
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{
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{ ATT_BT_UUID_SIZE, characterUUID },
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GATT_PERMIT_READ,
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0,
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&skCharProps
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},
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// Characteristic Value- Key Pressed
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{
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{ ATT_BT_UUID_SIZE, keyPressedUUID },
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0,
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0,
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&skKeyPressed
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},
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// Characteristic configuration
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{
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{ ATT_BT_UUID_SIZE, clientCharCfgUUID },
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GATT_PERMIT_READ | GATT_PERMIT_WRITE,
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0,
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(uint8 *)skConfig
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},
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// Characteristic User Description
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{
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{ ATT_BT_UUID_SIZE, charUserDescUUID },
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GATT_PERMIT_READ,
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0,
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skCharUserDesp
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},
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};
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/*********************************************************************
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* LOCAL FUNCTIONS
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*/
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static uint8 sk_ReadAttrCB( uint16 connHandle, gattAttribute_t *pAttr,
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uint8 *pValue, uint8 *pLen, uint16 offset, uint8 maxLen );
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static bStatus_t sk_WriteAttrCB( uint16 connHandle, gattAttribute_t *pAttr,
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uint8 *pValue, uint8 len, uint16 offset );
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static void sk_HandleConnStatusCB( uint16 connHandle, uint8 changeType );
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/*********************************************************************
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* PROFILE CALLBACKS
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*/
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// SK Service Callbacks
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CONST gattServiceCBs_t skCBs =
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{
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sk_ReadAttrCB, // Read callback function pointer
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sk_WriteAttrCB, // Write callback function pointer
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NULL // Authorization callback function pointer
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};
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/*********************************************************************
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* PUBLIC FUNCTIONS
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*/
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/*********************************************************************
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* @fn SK_AddService
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*
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* @brief Initializes the Simple Key service by registering
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* GATT attributes with the GATT server.
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*
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* @param services - services to add. This is a bit map and can
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* contain more than one service.
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*
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* @return Success or Failure
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*/
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bStatus_t SK_AddService( uint32 services )
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{
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uint8 status = SUCCESS;
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// Initialize Client Characteristic Configuration attributes
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GATTServApp_InitCharCfg( INVALID_CONNHANDLE, skConfig );
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// Register with Link DB to receive link status change callback
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VOID linkDB_Register( sk_HandleConnStatusCB );
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if ( services & SK_SERVICE )
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{
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// Register GATT attribute list and CBs with GATT Server App
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status = GATTServApp_RegisterService( simplekeysAttrTbl,
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GATT_NUM_ATTRS( simplekeysAttrTbl ),
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&skCBs );
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}
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return ( status );
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}
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/*********************************************************************
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* @fn SK_SetParameter
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*
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* @brief Set a Simple Key Profile parameter.
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*
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* @param param - Profile parameter ID
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* @param len - length of data to right
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* @param pValue - pointer to data to write. This is dependent on
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* the parameter ID and WILL be cast to the appropriate
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* data type (example: data type of uint16 will be cast to
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* uint16 pointer).
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*
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* @return bStatus_t
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*/
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bStatus_t SK_SetParameter( uint8 param, uint8 len, void *pValue )
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{
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bStatus_t ret = SUCCESS;
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switch ( param )
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{
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case SK_KEY_ATTR:
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if ( len == sizeof ( uint8 ) )
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{
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skKeyPressed = *((uint8*)pValue);
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// See if Notification/Indication has been enabled
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GATTServApp_ProcessCharCfg( skConfig, &skKeyPressed, FALSE,
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simplekeysAttrTbl, GATT_NUM_ATTRS( simplekeysAttrTbl ),
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INVALID_TASK_ID );
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}
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else
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{
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ret = bleInvalidRange;
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}
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break;
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default:
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ret = INVALIDPARAMETER;
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break;
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}
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return ( ret );
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}
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/*********************************************************************
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* @fn SK_GetParameter
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*
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* @brief Get a Simple Key Profile parameter.
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*
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* @param param - Profile parameter ID
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* @param pValue - pointer to data to put. This is dependent on
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* the parameter ID and WILL be cast to the appropriate
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* data type (example: data type of uint16 will be cast to
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* uint16 pointer).
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*
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* @return bStatus_t
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*/
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bStatus_t SK_GetParameter( uint8 param, void *pValue )
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{
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bStatus_t ret = SUCCESS;
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switch ( param )
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{
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case SK_KEY_ATTR:
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*((uint8*)pValue) = skKeyPressed;
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break;
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default:
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ret = INVALIDPARAMETER;
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break;
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}
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return ( ret );
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}
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/*********************************************************************
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* @fn sk_ReadAttrCB
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*
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* @brief Read an attribute.
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*
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* @param connHandle - connection message was received on
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* @param pAttr - pointer to attribute
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* @param pValue - pointer to data to be read
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* @param pLen - length of data to be read
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* @param offset - offset of the first octet to be read
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* @param maxLen - maximum length of data to be read
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*
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* @return Success or Failure
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*/
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static uint8 sk_ReadAttrCB( uint16 connHandle, gattAttribute_t *pAttr,
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uint8 *pValue, uint8 *pLen, uint16 offset, uint8 maxLen )
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{
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bStatus_t status = SUCCESS;
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// Make sure it's not a blob operation (no attributes in the profile are long
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if ( offset > 0 )
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{
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return ( ATT_ERR_ATTR_NOT_LONG );
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}
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if ( pAttr->type.len == ATT_BT_UUID_SIZE )
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{
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// 16-bit UUID
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uint16 uuid = BUILD_UINT16( pAttr->type.uuid[0], pAttr->type.uuid[1]);
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switch ( uuid )
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{
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// No need for "GATT_SERVICE_UUID" or "GATT_CLIENT_CHAR_CFG_UUID" cases;
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// gattserverapp handles this type for reads
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// simple keys characteristic does not have read permissions, but because it
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// can be sent as a notification, it must be included here
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case SK_KEYPRESSED_UUID:
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*pLen = 1;
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pValue[0] = *pAttr->pValue;
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break;
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default:
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// Should never get here!
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*pLen = 0;
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status = ATT_ERR_ATTR_NOT_FOUND;
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break;
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}
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}
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else
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{
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// 128-bit UUID
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*pLen = 0;
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status = ATT_ERR_INVALID_HANDLE;
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}
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return ( status );
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}
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/*********************************************************************
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* @fn sk_WriteAttrCB
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*
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* @brief Validate attribute data prior to a write operation
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*
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* @param connHandle - connection message was received on
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* @param pAttr - pointer to attribute
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* @param pValue - pointer to data to be written
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* @param len - length of data
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* @param offset - offset of the first octet to be written
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*
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* @return Success or Failure
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*/
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static bStatus_t sk_WriteAttrCB( uint16 connHandle, gattAttribute_t *pAttr,
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uint8 *pValue, uint8 len, uint16 offset )
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{
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bStatus_t status = SUCCESS;
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if ( pAttr->type.len == ATT_BT_UUID_SIZE )
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{
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// 16-bit UUID
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uint16 uuid = BUILD_UINT16( pAttr->type.uuid[0], pAttr->type.uuid[1]);
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switch ( uuid )
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{
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case GATT_CLIENT_CHAR_CFG_UUID:
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status = GATTServApp_ProcessCCCWriteReq( connHandle, pAttr, pValue, len,
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offset, GATT_CLIENT_CFG_NOTIFY );
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break;
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default:
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// Should never get here!
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status = ATT_ERR_ATTR_NOT_FOUND;
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break;
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}
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}
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else
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{
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// 128-bit UUID
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status = ATT_ERR_INVALID_HANDLE;
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}
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return ( status );
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}
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/*********************************************************************
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* @fn sk_HandleConnStatusCB
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*
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* @brief Simple Keys Profile link status change handler function.
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*
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* @param connHandle - connection handle
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* @param changeType - type of change
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*
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* @return none
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*/
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static void sk_HandleConnStatusCB( uint16 connHandle, uint8 changeType )
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{
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// Make sure this is not loopback connection
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if ( connHandle != LOOPBACK_CONNHANDLE )
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{
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// Reset Client Char Config if connection has dropped
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if ( ( changeType == LINKDB_STATUS_UPDATE_REMOVED ) ||
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( ( changeType == LINKDB_STATUS_UPDATE_STATEFLAGS ) &&
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( !linkDB_Up( connHandle ) ) ) )
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{
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GATTServApp_InitCharCfg( connHandle, skConfig );
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}
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}
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}
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/*********************************************************************
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*********************************************************************/
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