/*********************************************************************
* @fn GlucoseDisc
*
* @brief Current glucose service and characteristic discovery.
*
* @param state - Discovery state.
* @param pMsg - GATT message.
*
* @return New discovery state.
*/
static uint8_t GlucoseDisc(uint8_t state, gattMsgEvent_t *pMsg)
{
uint8_t newState = state;
switch (state)
{
case DISC_GLUCOSE_START:
{
uint8_t uuid[ATT_BT_UUID_SIZE] = { LO_UINT16(GLUCOSE_SERV_UUID),
HI_UINT16(GLUCOSE_SERV_UUID) };
// Initialize service discovery variables
glucoseSvcStartHdl = glucoseSvcEndHdl = 0;
glucoseEndHdlIdx = 0;
// Discover service by UUID
GATT_DiscPrimaryServiceByUUID(glucCollConnHandle, uuid,
ATT_BT_UUID_SIZE, glucCollTaskId);
newState = DISC_GLUCOSE_SVC;
}
break;
case DISC_GLUCOSE_SVC:
// Service found, store handles
if (pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0)
{
glucoseSvcStartHdl =
ATT_ATTR_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
glucoseSvcEndHdl =
ATT_GRP_END_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
}
// If procedure complete
if ((pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If service found
if (glucoseSvcStartHdl != 0)
{
// Discover all characteristics
GATT_DiscAllChars(glucCollConnHandle, glucoseSvcStartHdl,
glucoseSvcEndHdl, glucCollTaskId);
newState = DISC_GLUCOSE_CHAR;
}
else
{
// Service not found
newState = DISC_FAILED;
}
}
break;
case DISC_GLUCOSE_CHAR:
{
uint8_t i;
uint8_t *p;
uint16_t handle;
uint16_t uuid;
// Characteristics found
if (pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->msg.readByTypeRsp.numPairs > 0 &&
pMsg->msg.readByTypeRsp.len == CHAR_DESC_HDL_UUID16_LEN)
{
// For each characteristic declaration
p = pMsg->msg.readByTypeRsp.pDataList;
for (i = pMsg->msg.readByTypeRsp.numPairs; i > 0; i--)
{
// Parse characteristic declaration
handle = BUILD_UINT16(p[3], p[4]);
uuid = BUILD_UINT16(p[5], p[6]);
// If looking for end handle
if (glucoseEndHdlIdx != 0)
{
// End handle is one less than handle of characteristic declaration
glucoseHdlCache[glucoseEndHdlIdx] = BUILD_UINT16(p[0], p[1]) - 1;
glucoseEndHdlIdx = 0;
}
// If UUID is of interest, store handle
switch (uuid)
{
case GLUCOSE_MEAS_UUID:
glucoseHdlCache[HDL_GLUCOSE_START] = handle;
glucoseEndHdlIdx = HDL_GLUCOSE_END;
break;
case GLUCOSE_CONTEXT_UUID:
glucoseHdlCache[HDL_GLUCOSE_CONTEXT_START] = handle;
glucoseEndHdlIdx = HDL_GLUCOSE_CONTEXT_END;
break;
case RECORD_CTRL_PT_UUID:
glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_START] = handle;
glucoseEndHdlIdx = HDL_GLUCOSE_CTL_PNT_END;
break;
case GLUCOSE_FEATURE_UUID:
glucoseHdlCache[HDL_GLUCOSE_FEATURE] = handle;
break;
default:
break;
}
p += CHAR_DESC_HDL_UUID16_LEN;
}
}
// If procedure complete
if ((pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// Special case of end handle at end of service
if (glucoseEndHdlIdx != 0)
{
glucoseHdlCache[glucoseEndHdlIdx] = glucoseSvcEndHdl;
glucoseEndHdlIdx = 0;
}
// If didn't find glucose characteristic
if (glucoseHdlCache[HDL_GLUCOSE_START] == 0)
{
newState = DISC_FAILED;
}
else if (glucoseHdlCache[HDL_GLUCOSE_START] <
glucoseHdlCache[HDL_GLUCOSE_END])
{
// Discover characteristic descriptors
GATT_DiscAllCharDescs(glucCollConnHandle,
glucoseHdlCache[HDL_GLUCOSE_START] + 1,
glucoseHdlCache[HDL_GLUCOSE_END],
glucCollTaskId);
newState = DISC_GLUCOSE_CCCD;
}
else
{
newState = DISC_IDLE;
}
}
}
break;
case DISC_GLUCOSE_CCCD:
{
uint8_t i;
// Characteristic descriptors found
if (pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->msg.findInfoRsp.numInfo > 0 &&
pMsg->msg.findInfoRsp.format == ATT_HANDLE_BT_UUID_TYPE)
{
attFindInfoRsp_t *pRsp = &(pMsg->msg.findInfoRsp);
// For each handle/uuid pair
for (i = 0; i < pRsp->numInfo; i++)
{
// Look for CCCD
if ( ATT_BT_PAIR_UUID( pRsp->pInfo, i ) == GATT_CLIENT_CHAR_CFG_UUID )
{
// CCCD found
glucoseHdlCache[HDL_GLUCOSE_MEAS_CCCD] =
ATT_BT_PAIR_HANDLE( pRsp->pInfo, i );
break;
}
}
}
// If procedure complete
if ((pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If CCCD found
if (glucoseHdlCache[HDL_GLUCOSE_MEAS_CCCD] != 0)
{
// Should we look for unread category status CCCD
if (glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_START] <
glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_END])
{
// Discover unread category status characteristic descriptors
GATT_DiscAllCharDescs(glucCollConnHandle,
glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_START] + 1,
glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_END],
glucCollTaskId);
newState = DISC_GLUCOSE_CTL_PNT_CCCD;
}
else
{
// Missing required characteristic
newState = DISC_FAILED;
}
}
else
{
// Missing required characteristic descriptor
glucoseHdlCache[HDL_GLUCOSE_MEAS_CCCD] = 0;
newState = DISC_FAILED;
}
}
}
break;
case DISC_GLUCOSE_CTL_PNT_CCCD:
{
uint8_t i;
// Characteristic descriptors found
if (pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->msg.findInfoRsp.numInfo > 0 &&
pMsg->msg.findInfoRsp.format == ATT_HANDLE_BT_UUID_TYPE)
{
attFindInfoRsp_t *pRsp = &(pMsg->msg.findInfoRsp);
// For each handle/uuid pair
for (i = 0; i < pRsp->numInfo; i++)
{
// Look for CCCD
if ( ATT_BT_PAIR_UUID( pRsp->pInfo, i ) == GATT_CLIENT_CHAR_CFG_UUID )
{
// CCCD found
glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_CCCD] =
ATT_BT_PAIR_HANDLE( pRsp->pInfo, i );
break;
}
}
}
// If procedure complete
if ((pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If CCCD found
if (glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_CCCD] != 0)
{
// Should we look for unread category status CCCD
if (glucoseHdlCache[HDL_GLUCOSE_CONTEXT_START] <
glucoseHdlCache[HDL_GLUCOSE_CONTEXT_END])
{
// Discover unread category status characteristic descriptors
GATT_DiscAllCharDescs(glucCollConnHandle,
glucoseHdlCache[HDL_GLUCOSE_CONTEXT_START] + 1,
glucoseHdlCache[HDL_GLUCOSE_CONTEXT_END],
glucCollTaskId);
newState = DISC_GLUCOSE_CONTEXT_CCCD;
}
else
{
// Done
newState = DISC_IDLE;
}
}
else
{
// Missing required characteristic descriptor
glucoseHdlCache[HDL_GLUCOSE_CTL_PNT_CCCD] = 0;
newState = DISC_FAILED;
}
}
}
break;
case DISC_GLUCOSE_CONTEXT_CCCD:
{
uint8_t i;
// Characteristic descriptors found
if (pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->msg.findInfoRsp.numInfo > 0 &&
pMsg->msg.findInfoRsp.format == ATT_HANDLE_BT_UUID_TYPE)
{
attFindInfoRsp_t *pRsp = &(pMsg->msg.findInfoRsp);
// For each handle/uuid pair
for (i = 0; i < pRsp->numInfo; i++)
{
// Look for CCCD
if ( ATT_BT_PAIR_UUID( pRsp->pInfo, i ) == GATT_CLIENT_CHAR_CFG_UUID )
{
// CCCD found
glucoseHdlCache[HDL_GLUCOSE_CONTEXT_CCCD] =
ATT_BT_PAIR_HANDLE( pRsp->pInfo, i );
break;
}
}
}
// If procedure complete
if ((pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
newState = DISC_IDLE;
}
}
break;
default:
break;
}
return newState;
}
/*********************************************************************
* @fn GlucoseDevInfoDisc
*
* @brief Current glucose service and characteristic discovery.
*
* @param state - Discovery state.
* @param pMsg - GATT message.
*
* @return New discovery state.
*/
static uint8_t GlucoseDevInfoDisc(uint8_t state, gattMsgEvent_t *pMsg)
{
uint8_t newState = state;
switch (state)
{
case DISC_DEVINFO_START:
{
uint8_t uuid[ATT_BT_UUID_SIZE] = { LO_UINT16(DEVINFO_SERV_UUID),
HI_UINT16(DEVINFO_SERV_UUID) };
// Initialize service discovery variables
glucoseSvcStartHdl = glucoseSvcEndHdl = 0;
glucoseEndHdlIdx = 0;
// Discover service by UUID
GATT_DiscPrimaryServiceByUUID(glucCollConnHandle, uuid,
ATT_BT_UUID_SIZE, glucCollTaskId);
newState = DISC_DEVINFO_SVC;
}
break;
case DISC_DEVINFO_SVC:
// Service found, store handles
if (pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0)
{
glucoseSvcStartHdl =
ATT_ATTR_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
glucoseSvcEndHdl =
ATT_GRP_END_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
}
// If procedure complete
if ((pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If service found
if (glucoseSvcStartHdl != 0)
{
// Discover all characteristics
GATT_DiscAllChars(glucCollConnHandle, glucoseSvcStartHdl,
glucoseSvcEndHdl, glucCollTaskId);
newState = DISC_DEVINFO_CHAR;
}
else
{
// Service not found
newState = DISC_FAILED;
}
}
break;
case DISC_DEVINFO_CHAR:
{
uint8_t i;
uint8_t *p;
uint16_t handle;
uint16_t uuid;
// Characteristics found
if (pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->msg.readByTypeRsp.numPairs > 0 &&
pMsg->msg.readByTypeRsp.len == CHAR_DESC_HDL_UUID16_LEN)
{
// For each characteristic declaration
p = pMsg->msg.readByTypeRsp.pDataList;
for (i = pMsg->msg.readByTypeRsp.numPairs; i > 0; i--)
{
// Parse characteristic declaration
handle = BUILD_UINT16(p[3], p[4]);
uuid = BUILD_UINT16(p[5], p[6]);
// If UUID is of interest, store handle
switch (uuid)
{
case MANUFACTURER_NAME_UUID:
glucoseHdlCache[HDL_DEVINFO_MANUFACTURER_NAME] = handle;
break;
case SYSTEM_ID_UUID:
glucoseHdlCache[HDL_DEVINFO_SYSTEM_ID] = handle;
break;
case MODEL_NUMBER_UUID:
glucoseHdlCache[HDL_DEVINFO_MODEL_NUM] = handle;
break;
default:
break;
}
p += CHAR_DESC_HDL_UUID16_LEN;
}
}
// If procedure complete
if ((pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If didn't find required device info
if (glucoseHdlCache[HDL_DEVINFO_MANUFACTURER_NAME] == 0 ||
glucoseHdlCache[HDL_DEVINFO_SYSTEM_ID] == 0 ||
glucoseHdlCache[HDL_DEVINFO_MODEL_NUM] == 0)
{
newState = DISC_FAILED;
}
else
{
newState = DISC_IDLE;
}
}
}
break;
default:
break;
}
return newState;
}
static void hidappProcessGATTMsg( gattMsgEvent_t *pPkt )
{
// Build the message first
switch ( pPkt->method )
{
case ATT_HANDLE_VALUE_NOTI:
// First try to send out pending HID report
if ( reportRetries > 0 )
{
hidappSendInReport( &lastInReport );
reportRetries = 0;
osal_stop_timerEx( hidappTaskId, HIDAPP_EVT_REPORT_RETRY );
}
// Send incoming HID report
if ( hidappSendInReport( &(pPkt->msg.handleValueNoti) ) == FALSE )
{
// Save report for retries later
osal_memcpy( &lastInReport, &(pPkt->msg.handleValueNoti), sizeof( attHandleValueNoti_t ) );
reportRetries = 1;
osal_start_timerEx( hidappTaskId, HIDAPP_EVT_REPORT_RETRY, HIDAPP_INPUT_RETRY_TIMEOUT );
}
break;
case ATT_FIND_BY_TYPE_VALUE_RSP:
// Response from GATT_DiscPrimaryServiceByUUID
// Service found, store handles
if ( pPkt->msg.findByTypeValueRsp.numInfo > 0 )
{
serviceStartHandle = pPkt->msg.findByTypeValueRsp.handlesInfo[0].handle;
serviceEndHandle = pPkt->msg.findByTypeValueRsp.handlesInfo[0].grpEndHandle;
}
// If procedure complete
else if ( pPkt->hdr.status == bleProcedureComplete )
{
if ( serviceStartHandle != 0 )
{
if ( serviceToDiscover == GATT_SERVICE_UUID )
{
// Begin the search for characteristic handle of the service
readReq.startHandle = serviceStartHandle;
readReq.endHandle = serviceEndHandle;
readReqType.len = 2;
readReqType.uuid[0] = LO_UINT16(SERVICE_CHANGED_UUID);
readReqType.uuid[1] = HI_UINT16(SERVICE_CHANGED_UUID);
readReq.type = readReqType;
GATT_DiscCharsByUUID(connHandle, &readReq, hidappTaskId );
}
else if ( serviceToDiscover == HID_SERVICE_UUID )
{
// Discover all characteristics
GATT_DiscAllChars( connHandle, serviceStartHandle, serviceEndHandle, hidappTaskId );
}
}
}
break;
case ATT_READ_BY_TYPE_RSP:
// Response from Discover all Characteristics.
// Success indicates packet with characteristic discoveries.
if ( pPkt->hdr.status == SUCCESS )
{
attReadByTypeRsp_t rsp = pPkt->msg.readByTypeRsp;
uint8 idx = 0;
if ( serviceToDiscover == GATT_SERVICE_UUID )
{
// We have discovered the GATT Service Characteristic handle
uint8 low = LO_UINT16(pPkt->msg.readByTypeRsp.dataList[3]);
uint8 high = HI_UINT16(pPkt->msg.readByTypeRsp.dataList[4]);
serviceChangeHandle = BUILD_UINT16(low, high);
// Break to skip next part, it doesn't apply here
break;
}
// Search characteristics for those with notification permissions.
while( idx < ((rsp.numPairs * rsp.len ) - 1))
{
// Check permissions of characteristic for notification permission
if ( (rsp.dataList[idx+2] & GATT_PROP_NOTIFY ) )
{
uint16* pHandle = (mouseCharHandle == GATT_INVALID_HANDLE) ? &mouseCharHandle : &keyCharHandle ;
if ( pHandle == &keyCharHandle && consumerCtrlCharHandle == GATT_INVALID_HANDLE )
{
pHandle = ( keyCharHandle == GATT_INVALID_HANDLE ) ? &keyCharHandle : &consumerCtrlCharHandle;
}
if ( *pHandle == GATT_INVALID_HANDLE )
{
*pHandle = BUILD_UINT16( rsp.dataList[idx+3], rsp.dataList[idx+4] );
}
}
idx += rsp.len;
}
}
// This indicates that there is no more characteristic data
// to be discovered within the given handle range.
else if ( pPkt->hdr.status == bleProcedureComplete )
{
if ( serviceToDiscover == GATT_SERVICE_UUID )
{
// Begin Service Discovery of HID Service
serviceToDiscover = HID_SERVICE_UUID;
hidappDiscoverService( connHandle, HID_SERVICE_UUID );
// Break to skip next part, it doesn't apply yet.
break;
}
if ( enableCCCDs == TRUE )
{
mouseCCCHandle = mouseCharHandle + 1;
// Begin configuring the characteristics for notifications
hidappEnableNotification( connHandle, mouseCCCHandle );
}
else
{
serviceDiscComplete = TRUE;
}
}
break;
case ATT_WRITE_RSP:
if ( pPkt->hdr.status == SUCCESS && !serviceDiscComplete )
{
uint16 handle = ( keyCCCHandle == GATT_INVALID_HANDLE ) ?
( keyCCCHandle = keyCharHandle + 1 ) :
( consumerCtrlCCCHandle = consumerCtrlCharHandle + 1 );
hidappEnableNotification( connHandle, handle );
if ( consumerCtrlCCCHandle != GATT_INVALID_HANDLE)
{
serviceDiscComplete = TRUE;
}
}
break;
// Service Change indication
case ATT_HANDLE_VALUE_IND:
// Note: this logic assumes that the only indications that will be sent
// will come from that GATT Service Changed Characteristic
if ( pPkt->hdr.status == SUCCESS )
{
serviceChange = CHANGE_OCCURED;
// Acknowledge receipt of indication
ATT_HandleValueCfm( pPkt->connHandle );
// Handles in server have changed while devices are connected
if ( ( gapBondMgrState == PAIRED_BONDED_STATE ) &&
( serviceChangeHandle == pPkt->msg.handleValueInd.handle ) )
{
// Begin Service Discovery of HID Service
serviceToDiscover = HID_SERVICE_UUID;
hidappDiscoverService( connHandle, HID_SERVICE_UUID );
serviceChange = NO_CHANGE;
}
}
break;
default:
// Unknown event
break;
}
}
/*********************************************************************
* @fn TimeAppDiscCurrTime()
*
* @brief Current time service and characteristic discovery.
*
* @param state - Discovery state.
* @param pMsg - GATT message.
*
* @return New discovery state.
*/
static uint8 TimeAppDiscCurrTime( uint8 state, gattMsgEvent_t *pMsg )
{
uint8 newState = state;
switch ( state )
{
case DISC_CURR_TIME_START:
{
uint8 uuid[ATT_BT_UUID_SIZE] = { LO_UINT16(CURRENT_TIME_SVC_UUID),
HI_UINT16(CURRENT_TIME_SVC_UUID) };
// Initialize service discovery variables
timeAppSvcStartHdl = timeAppSvcEndHdl = 0;
timeAppEndHdlIdx = 0;
// Discover service by UUID
GATT_DiscPrimaryServiceByUUID( gapConnHandle, uuid,
ATT_BT_UUID_SIZE, bloodPressureTaskId );
newState = DISC_CURR_TIME_SVC;
}
break;
case DISC_CURR_TIME_SVC:
// Service found, store handles
if ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0 )
{
timeAppSvcStartHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].handle;
timeAppSvcEndHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].grpEndHandle;
}
// If procedure complete
if ( ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->hdr.status == bleProcedureComplete ) ||
( pMsg->method == ATT_ERROR_RSP ) )
{
// If service found
if ( timeAppSvcStartHdl != 0 )
{
// Discover all characteristics
GATT_DiscAllChars( gapConnHandle, timeAppSvcStartHdl,
timeAppSvcEndHdl, bloodPressureTaskId );
newState = DISC_CURR_TIME_CHAR;
}
else
{
// Service not found
newState = DISC_FAILED;
}
}
break;
case DISC_CURR_TIME_CHAR:
{
// Characteristics found
if ( pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->msg.readByTypeRsp.numPairs > 0 &&
pMsg->msg.readByTypeRsp.len == CHAR_DESC_HDL_UUID16_LEN)
{
uint8 i;
uint8 *p;
uint16 handle;
uint16 uuid;
// For each characteristic declaration
p = pMsg->msg.readByTypeRsp.dataList;
for ( i = pMsg->msg.readByTypeRsp.numPairs; i > 0; i-- )
{
// Parse characteristic declaration
handle = BUILD_UINT16(p[3], p[4]);
uuid = BUILD_UINT16(p[5], p[6]);
// If looking for end handle
if ( timeAppEndHdlIdx != 0 )
{
// End handle is one less than handle of characteristic declaration
timeAppHdlCache[timeAppEndHdlIdx] = BUILD_UINT16(p[0], p[1]) - 1;
timeAppEndHdlIdx = 0;
}
// If UUID is of interest, store handle
switch ( uuid )
{
case CT_TIME_UUID:
timeAppHdlCache[HDL_CURR_TIME_CT_TIME_START] = handle;
timeAppEndHdlIdx = HDL_CURR_TIME_CT_TIME_END;
break;
default:
break;
}
p += CHAR_DESC_HDL_UUID16_LEN;
}
}
// If procedure complete
if ( ( pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->hdr.status == bleProcedureComplete ) ||
( pMsg->method == ATT_ERROR_RSP ) )
{
// Special case of end handle at end of service
if ( timeAppEndHdlIdx != 0 )
{
timeAppHdlCache[timeAppEndHdlIdx] = timeAppSvcEndHdl;
timeAppEndHdlIdx = 0;
}
// If didn't find time characteristic
if ( timeAppHdlCache[HDL_CURR_TIME_CT_TIME_START] == 0 )
{
newState = DISC_FAILED;
}
else if ( timeAppHdlCache[HDL_CURR_TIME_CT_TIME_START] <timeAppHdlCache[HDL_CURR_TIME_CT_TIME_END] )
{
// Discover characteristic descriptors
GATT_DiscAllCharDescs( gapConnHandle,
timeAppHdlCache[HDL_CURR_TIME_CT_TIME_START] + 1,
timeAppHdlCache[HDL_CURR_TIME_CT_TIME_END],
bloodPressureTaskId );
newState = DISC_CURR_TIME_CT_TIME_CCCD;
}
else
{
newState = DISC_IDLE;
}
}
}
break;
case DISC_CURR_TIME_CT_TIME_CCCD:
{
// Characteristic descriptors found
if ( pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->msg.findInfoRsp.numInfo > 0 &&
pMsg->msg.findInfoRsp.format == ATT_HANDLE_BT_UUID_TYPE )
{
uint8 i;
// For each handle/uuid pair
for ( i = 0; i < pMsg->msg.findInfoRsp.numInfo; i++ )
{
// Look for CCCD
if ( (pMsg->msg.findInfoRsp.info.btPair[i].uuid[0] ==
LO_UINT16(GATT_CLIENT_CHAR_CFG_UUID)) &&
(pMsg->msg.findInfoRsp.info.btPair[i].uuid[1] ==
HI_UINT16(GATT_CLIENT_CHAR_CFG_UUID)) )
{
// CCCD found
timeAppHdlCache[HDL_CURR_TIME_CT_TIME_CCCD] =
pMsg->msg.findInfoRsp.info.btPair[i].handle;
break;
}
}
}
// If procedure complete
if ( ( pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->hdr.status == bleProcedureComplete ) ||
( pMsg->method == ATT_ERROR_RSP ) )
{
newState = DISC_IDLE;
}
}
break;
default:
break;
}
return newState;
}
/*********************************************************************
* @fn softCmdDiscGenCtrl()
*
* @brief Generic control service and characteristic discovery.
*
* @param state - Discovery state.
* @param pMsg - GATT message.
*
* @return New discovery state.
*/
static uint8 softCmdDiscGenCtrl( uint8 state, gattMsgEvent_t *pMsg )
{
uint8 newState = state;
switch ( state )
{
case DISC_GEN_CTRL_START:
{
uint8 uuid[ATT_BT_UUID_SIZE] = { LO_UINT16(GEN_CTRL_SERVICE_UUID),
HI_UINT16(GEN_CTRL_SERVICE_UUID) };
// Initialize service discovery variables
softCmdSvcStartHdl = softCmdSvcEndHdl = 0;
// Discover service by UUID
GATT_DiscPrimaryServiceByUUID( softCmdConnHandle, uuid,
ATT_BT_UUID_SIZE, softCmdTaskId );
newState = DISC_GEN_CTRL_SVC;
}
break;
case DISC_GEN_CTRL_SVC:
// Service found, store handles
if ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0 )
{
softCmdSvcStartHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].handle;
softCmdSvcEndHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].grpEndHandle;
}
// If procedure complete
if ( ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->hdr.status == bleProcedureComplete ) ||
( pMsg->method == ATT_ERROR_RSP ) )
{
// If service found
if ( softCmdSvcStartHdl != 0 )
{
// Discover all characteristics
GATT_DiscAllChars( softCmdConnHandle, softCmdSvcStartHdl,
softCmdSvcEndHdl, softCmdTaskId );
newState = DISC_GEN_CTRL_CHAR;
}
else
{
// Service not found
newState = DISC_FAILED;
}
}
break;
case DISC_GEN_CTRL_CHAR:
{
uint8 i;
uint8 *p;
uint16 handle;
uint16 uuid;
// Characteristics found
if ( pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->msg.readByTypeRsp.numPairs > 0 &&
pMsg->msg.readByTypeRsp.len == CHAR_DESC_HDL_UUID16_LEN )
{
// For each characteristic declaration
p = pMsg->msg.readByTypeRsp.dataList;
for ( i = pMsg->msg.readByTypeRsp.numPairs; i > 0; i-- )
{
// Parse characteristic declaration
handle = BUILD_UINT16(p[3], p[4]);
uuid = BUILD_UINT16(p[5], p[6]);
// If UUID is of interest, store handle
switch ( uuid )
{
case GEN_CMD_UUID:
softCmdHdlCache[HDL_GEN_CTRL_GEN_CMD] = handle;
break;
case CMD_ENUM_UUID:
softCmdHdlCache[HDL_GEN_CTRL_CMD_ENUM] = handle;
break;
default:
break;
}
p += CHAR_DESC_HDL_UUID16_LEN;
}
}
// If procedure complete
if ( ( pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->hdr.status == bleProcedureComplete ) ||
( pMsg->method == ATT_ERROR_RSP ) )
{
// If didn't find Generic Command then fail
if ( softCmdHdlCache[HDL_GEN_CTRL_GEN_CMD] == 0 )
{
newState = DISC_FAILED;
}
// If found Command Enumeration read it
else if ( softCmdHdlCache[HDL_GEN_CTRL_CMD_ENUM] != 0 )
{
attReadReq_t readReq;
readReq.handle = softCmdHdlCache[HDL_GEN_CTRL_CMD_ENUM];
GATT_ReadCharValue( softCmdConnHandle, &readReq, softCmdTaskId );
newState = DISC_GEN_CTRL_READ_ENUM;
}
else
{
newState = DISC_IDLE;
}
}
}
break;
case DISC_GEN_CTRL_READ_ENUM:
// Currently nothing is done when this characteristic is read
newState = DISC_IDLE;
break;
default:
break;
}
return newState;
}
/*********************************************************************
* @fn Time_discAlertNtf()
*
* @brief Alert notification service and characteristic discovery.
*
* @param state - Discovery state.
* @param pMsg - GATT message.
*
* @return New discovery state.
*/
static uint8_t Time_discAlertNtf(uint8_t state, gattMsgEvent_t *pMsg)
{
uint8_t newState = state;
switch (state)
{
case DISC_ALERT_NTF_START:
{
uint8_t uuid[ATT_BT_UUID_SIZE] = { LO_UINT16(ALERT_NOTIF_SERV_UUID),
HI_UINT16(ALERT_NOTIF_SERV_UUID) };
// Initialize service discovery variables
Time_svcStartHdl = Time_svcEndHdl = 0;
Time_endHdlIdx = 0;
// Discover service by UUID
GATT_DiscPrimaryServiceByUUID(Time_connHandle, uuid,
ATT_BT_UUID_SIZE, ICall_getEntityId());
newState = DISC_ALERT_NTF_SVC;
}
break;
case DISC_ALERT_NTF_SVC:
// Service found, store handles
if (pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0)
{
Time_svcStartHdl =
ATT_ATTR_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
Time_svcEndHdl =
ATT_GRP_END_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
}
// If procedure complete
if ((pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If service found
if (Time_svcStartHdl != 0)
{
// Discover all characteristics
GATT_DiscAllChars(Time_connHandle, Time_svcStartHdl,
Time_svcEndHdl, ICall_getEntityId());
newState = DISC_ALERT_NTF_CHAR;
}
else
{
// Service not found
newState = DISC_FAILED;
}
}
break;
case DISC_ALERT_NTF_CHAR:
{
// Characteristics found
if (pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->msg.readByTypeRsp.numPairs > 0 &&
pMsg->msg.readByTypeRsp.len == CHAR_DESC_HDL_UUID16_LEN)
{
uint8_t i;
uint8_t *p;
uint16_t handle;
uint16_t uuid;
p = pMsg->msg.readByTypeRsp.pDataList;
// For each characteristic declaration
for (i = pMsg->msg.readByTypeRsp.numPairs; i > 0; i--)
{
// Parse characteristic declaration
handle = BUILD_UINT16(p[3], p[4]);
uuid = BUILD_UINT16(p[5], p[6]);
// If looking for end handle
if (Time_endHdlIdx != 0)
{
// End handle is one less than handle of characteristic declaration
Time_handleCache[Time_endHdlIdx] = BUILD_UINT16(p[0], p[1]) - 1;
Time_endHdlIdx = 0;
}
// If UUID is of interest, store handle
switch (uuid)
{
case ALERT_NOTIF_CTRL_PT_UUID:
Time_handleCache[HDL_ALERT_NTF_CTRL] = handle;
break;
case UNREAD_ALERT_STATUS_UUID:
Time_handleCache[HDL_ALERT_NTF_UNREAD_START] = handle;
Time_endHdlIdx = HDL_ALERT_NTF_UNREAD_END;
break;
case NEW_ALERT_UUID:
Time_handleCache[HDL_ALERT_NTF_NEW_START] = handle;
Time_endHdlIdx = HDL_ALERT_NTF_NEW_END;
break;
case SUP_NEW_ALERT_CAT_UUID:
Time_handleCache[HDL_ALERT_NTF_NEW_CAT] = handle;
break;
case SUP_UNREAD_ALERT_CAT_UUID:
Time_handleCache[HDL_ALERT_NTF_UNREAD_CAT] = handle;
break;
default:
break;
}
p += CHAR_DESC_HDL_UUID16_LEN;
}
}
// If procedure complete
if ((pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// Special case of end handle at end of service
if (Time_endHdlIdx != 0)
{
Time_handleCache[Time_endHdlIdx] = Time_svcEndHdl;
Time_endHdlIdx = 0;
}
// If didn't find new alert characteristic
if (Time_handleCache[HDL_ALERT_NTF_NEW_START] == 0)
{
newState = DISC_FAILED;
}
else if (Time_handleCache[HDL_ALERT_NTF_NEW_START] <
Time_handleCache[HDL_ALERT_NTF_NEW_END])
{
// Discover incoming alert characteristic descriptors
GATT_DiscAllCharDescs(Time_connHandle,
Time_handleCache[HDL_ALERT_NTF_NEW_START] + 1,
Time_handleCache[HDL_ALERT_NTF_NEW_END],
ICall_getEntityId());
newState = DISC_ALERT_NTF_NEW_CCCD;
}
else
{
// Missing required characteristic descriptor
Time_handleCache[HDL_ALERT_NTF_NEW_START] = 0;
newState = DISC_FAILED;
}
}
}
break;
case DISC_ALERT_NTF_NEW_CCCD:
{
// Characteristic descriptors found
if (pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->msg.findInfoRsp.numInfo > 0 &&
pMsg->msg.findInfoRsp.format == ATT_HANDLE_BT_UUID_TYPE)
{
uint8_t i;
// For each handle/uuid pair
for (i = 0; i < pMsg->msg.findInfoRsp.numInfo; i++)
{
// Look for CCCD
if (ATT_BT_PAIR_UUID(pMsg->msg.findInfoRsp.pInfo, i) ==
GATT_CLIENT_CHAR_CFG_UUID)
{
// CCCD found
Time_handleCache[HDL_ALERT_NTF_NEW_CCCD] =
ATT_BT_PAIR_HANDLE(pMsg->msg.findInfoRsp.pInfo, i);
break;
}
}
}
// If procedure complete
if ((pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If CCCD found
if (Time_handleCache[HDL_ALERT_NTF_NEW_CCCD] != 0)
{
// Should we look for unread category status CCCD
if (Time_handleCache[HDL_ALERT_NTF_UNREAD_START] <
Time_handleCache[HDL_ALERT_NTF_UNREAD_END])
{
// Discover unread category status characteristic descriptors
GATT_DiscAllCharDescs(Time_connHandle,
Time_handleCache[HDL_ALERT_NTF_UNREAD_START] + 1,
Time_handleCache[HDL_ALERT_NTF_UNREAD_END],
ICall_getEntityId());
newState = DISC_ALERT_NTF_UNREAD_CCCD;
}
else
{
// Done
newState = DISC_IDLE;
}
}
else
{
// Missing required characteristic descriptor
Time_handleCache[HDL_ALERT_NTF_NEW_START] = 0;
newState = DISC_FAILED;
}
}
}
break;
case DISC_ALERT_NTF_UNREAD_CCCD:
{
// Characteristic descriptors found
if (pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->msg.findInfoRsp.numInfo > 0 &&
pMsg->msg.findInfoRsp.format == ATT_HANDLE_BT_UUID_TYPE)
{
uint8_t i;
// For each handle/uuid pair
for (i = 0; i < pMsg->msg.findInfoRsp.numInfo; i++)
{
// Look for CCCD
if (ATT_BT_PAIR_UUID(pMsg->msg.findInfoRsp.pInfo, i) ==
GATT_CLIENT_CHAR_CFG_UUID)
{
// CCCD found
Time_handleCache[HDL_ALERT_NTF_UNREAD_CCCD] =
ATT_BT_PAIR_HANDLE(pMsg->msg.findInfoRsp.pInfo, i);
break;
}
}
}
// If procedure complete
if ((pMsg->method == ATT_FIND_INFO_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
newState = DISC_IDLE;
}
}
break;
default:
break;
}
return newState;
}
/*********************************************************************
* @fn Time_discRefTime()
*
* @brief Reference time service and characteristic discovery.
*
* @param state - Discovery state.
* @param pMsg - GATT message.
*
* @return New discovery state.
*/
static uint8_t Time_discRefTime(uint8_t state, gattMsgEvent_t *pMsg)
{
uint8_t newState = state;
switch (state)
{
case DISC_REF_TIME_START:
{
uint8_t uuid[ATT_BT_UUID_SIZE] =
{ LO_UINT16(REF_TIME_UPDATE_SERV_UUID),
HI_UINT16(REF_TIME_UPDATE_SERV_UUID) };
// Initialize service discovery variables
Time_svcStartHdl = Time_svcEndHdl = 0;
Time_endHdlIdx = 0;
// Discover service by UUID
GATT_DiscPrimaryServiceByUUID(Time_connHandle, uuid,
ATT_BT_UUID_SIZE, ICall_getEntityId());
newState = DISC_REF_TIME_SVC;
}
break;
case DISC_REF_TIME_SVC:
// Service found, store handles
if (pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0)
{
Time_svcStartHdl =
ATT_ATTR_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
Time_svcEndHdl =
ATT_GRP_END_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
}
// If procedure complete
if ((pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If service found
if (Time_svcStartHdl != 0)
{
// Discover all characteristics
GATT_DiscAllChars(Time_connHandle, Time_svcStartHdl,
Time_svcEndHdl, ICall_getEntityId());
newState = DISC_REF_TIME_CHAR;
}
else
{
// Service not found
newState = DISC_FAILED;
}
}
break;
case DISC_REF_TIME_CHAR:
{
// Characteristics found
if (pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->msg.readByTypeRsp.numPairs > 0 &&
pMsg->msg.readByTypeRsp.len == CHAR_DESC_HDL_UUID16_LEN)
{
uint8_t i;
uint8_t *p;
uint16_t handle;
uint16_t uuid;
p = pMsg->msg.readByTypeRsp.pDataList;
// For each characteristic declaration
for (i = pMsg->msg.readByTypeRsp.numPairs; i > 0; i--)
{
// Parse characteristic declaration
handle = BUILD_UINT16(p[3], p[4]);
uuid = BUILD_UINT16(p[5], p[6]);
// If UUID is of interest, store handle
switch (uuid)
{
case TIME_UPDATE_CTRL_PT_UUID:
Time_handleCache[HDL_REF_TIME_UPD_CTRL] = handle;
break;
case TIME_UPDATE_STATE_UUID:
Time_handleCache[HDL_REF_TIME_UPD_STATE] = handle;
break;
default:
break;
}
p += CHAR_DESC_HDL_UUID16_LEN;
}
}
// If procedure complete
if ((pMsg->method == ATT_READ_BY_TYPE_RSP &&
pMsg->hdr.status == bleProcedureComplete) ||
(pMsg->method == ATT_ERROR_RSP))
{
// If didn't find mandatory characteristics
if (Time_handleCache[HDL_REF_TIME_UPD_CTRL] == 0 ||
Time_handleCache[HDL_REF_TIME_UPD_STATE] == 0)
{
newState = DISC_FAILED;
}
else
{
newState = DISC_IDLE;
}
}
}
break;
default:
break;
}
return newState;
}
