③SBP_PERIODIC_EVT
先是利用tmos_start_task（）函数来实现本个事件的时间配置。
if ( events & SBP_PERIODIC_EVT )
{
// Restart timer
if ( SBP_PERIODIC_EVT_PERIOD ){
tmos_start_task( Peripheral_TaskID, SBP_PERIODIC_EVT, SBP_PERIODIC_EVT_PERIOD );
}
// Perform periodic application task
performPeriodicTask();
return (events ^ SBP_PERIODIC_EVT);
}
Perform periodic application task（）函数主要功能是执行申请任务，具体函数如下所示：
static void performPeriodicTask( void )
{
uint8 notiData[SIMPLEPROFILE_CHAR4_LEN] = { 0x99 };
peripheralChar4Notify( notiData, SIMPLEPROFILE_CHAR4_LEN );
}
通过设置notiData[]数组中的值，可以实现从机向主机传送数据的改变。
其中peripheralChar4Notify（）函数具体如下所示：
static void peripheralChar4Notify( uint8 *pValue, uint16 len )
{
attHandleValueNoti_t noti;
noti.len = len;
noti.pValue = GATT_bm_alloc( peripheralConnList.connHandle, ATT_HANDLE_VALUE_NOTI, noti.len, NULL, 0 );
tmos_memcpy( noti.pValue, pValue, noti.len );
if( simpleProfile_Notify( peripheralConnList.connHandle, ¬i ) != SUCCESS )
{
GATT_bm_free( (gattMsg_t *)¬i, ATT_HANDLE_VALUE_NOTI );
}
}
得到的变量先通过tmos_memcpy（）函数进行内存复制，再通过simpleProfile_Notify（）函数，simpleProfile_Notify（）函数如下所示：
bStatus_t simpleProfile_Notify( uint16 connHandle, attHandleValueNoti_t *pNoti )
{
uint16 value = GATTServApp_ReadCharCfg( connHandle, simpleProfileChar4Config );
// If notifications enabled
if ( value & GATT_CLIENT_CFG_NOTIFY )
{
// Set the handle
pNoti->handle = simpleProfileAttrTbl[SIMPLEPROFILE_CHAR4_VALUE_POS].handle;
// Send the notification
return GATT_Notification( connHandle, pNoti, FALSE );
}
return bleIncorrectMode;
}
首先simpleProfile_Notify（）函数执行了一个GATTServApp_ReadCharCfg（）函数。之后由分别执行了simpleProfileAttrTbl（）函数和GATT_Notification（）函数。
其中利用simpleProfileAttrTbl（）实现配置文件属性表的查询：
static gattAttribute_t simpleProfileAttrTbl[] =
{
// Simple Profile Service
{
{ ATT_BT_UUID_SIZE, primaryServiceUUID }, /* type */
GATT_PERMIT_READ, /* permissions */
0, /* handle */
(uint8 *)&simpleProfileService /* pValue */
},
// Characteristic 1 Declaration
{
{ ATT_BT_UUID_SIZE, characterUUID },
GATT_PERMIT_READ,
0,
&simpleProfileChar1Props
},
// Characteristic Value 1
{
{ ATT_BT_UUID_SIZE, simpleProfilechar1UUID },
GATT_PERMIT_READ | GATT_PERMIT_WRITE,
0,
simpleProfileChar1
},
// Characteristic 1 User Description
{
{ ATT_BT_UUID_SIZE, charUserDescUUID },
GATT_PERMIT_READ,
0,
simpleProfileChar1UserDesp
},
// Characteristic 2 Declaration
{
{ ATT_BT_UUID_SIZE, characterUUID },
GATT_PERMIT_READ,
0,
&simpleProfileChar2Props
},
// Characteristic Value 2
{
{ ATT_BT_UUID_SIZE, simpleProfilechar2UUID },
GATT_PERMIT_READ,
0,
simpleProfileChar2
},
// Characteristic 2 User Description
{
{ ATT_BT_UUID_SIZE, charUserDescUUID },
GATT_PERMIT_READ,
0,
simpleProfileChar2UserDesp
},
// Characteristic 3 Declaration
{
{ ATT_BT_UUID_SIZE, characterUUID },
GATT_PERMIT_READ,
0,
&simpleProfileChar3Props
},
// Characteristic Value 3
{
{ ATT_BT_UUID_SIZE, simpleProfilechar3UUID },
GATT_PERMIT_WRITE,
0,
simpleProfileChar3
},
// Characteristic 3 User Description
{
{ ATT_BT_UUID_SIZE, charUserDescUUID },
GATT_PERMIT_READ,
0,
simpleProfileChar3UserDesp
},
// Characteristic 4 Declaration
{
{ ATT_BT_UUID_SIZE, characterUUID },
GATT_PERMIT_READ,
0,
&simpleProfileChar4Props
},
// Characteristic Value 4
{
{ ATT_BT_UUID_SIZE, simpleProfilechar4UUID },
0,
0,
simpleProfileChar4
},
// Characteristic 4 configuration
{
{ ATT_BT_UUID_SIZE, clientCharCfgUUID },
GATT_PERMIT_READ | GATT_PERMIT_WRITE,
0,
(uint8 *)simpleProfileChar4Config
},
// Characteristic 4 User Description
{
{ ATT_BT_UUID_SIZE, charUserDescUUID },
GATT_PERMIT_READ,
0,
simpleProfileChar4UserDesp
},
// Characteristic 5 Declaration
{
{ ATT_BT_UUID_SIZE, characterUUID },
GATT_PERMIT_READ,
0,
&simpleProfileChar5Props
},
// Characteristic Value 5
{
{ ATT_BT_UUID_SIZE, simpleProfilechar5UUID },
GATT_PERMIT_AUTHEN_READ,
0,
simpleProfileChar5
},
// Characteristic 5 User Description
{
{ ATT_BT_UUID_SIZE, charUserDescUUID },
GATT_PERMIT_READ,
0,
simpleProfileChar5UserDesp
},
};
而GATT_Notification（）函数则是发送数据的函数，将之前peripheralChar4Notify（）函数存储的数据发送出去。
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