/*********************************************************************
* @fn SimpleBLECentral_ProcessEvent
*
* @brief Simple BLE Central Application Task event processor. This function
* is called to process all events for the task. Events
* include timers, messages and any other user defined events.
*
* @param task_id - The OSAL assigned task ID.
* @param events - events to process. This is a bit map and can
* contain more than one event.
*
* @return events not processed
*/
uint16 SimpleBLECentral_ProcessEvent( uint8 task_id, uint16 events )
{
VOID task_id; // OSAL required parameter that isn't used in this function
if ( events & SYS_EVENT_MSG )
{
uint8 *pMsg;
if ( (pMsg = osal_msg_receive( simpleBLETaskId )) != NULL )
{
simpleBLECentral_ProcessOSALMsg( (osal_event_hdr_t *)pMsg );
// Release the OSAL message
VOID osal_msg_deallocate( pMsg );
}
// return unprocessed events
return (events ^ SYS_EVENT_MSG);
}
if ( events & START_DEVICE_EVT )
{
// Start the Device
VOID GAPCentralRole_StartDevice( (gapCentralRoleCB_t *) &simpleBLERoleCB );
// Register with bond manager after starting device
GAPBondMgr_Register( (gapBondCBs_t *) &simpleBLEBondCB );
return ( events ^ START_DEVICE_EVT );
}
if ( events & START_DISCOVERY_EVT )
{
simpleBLECentralStartDiscovery( );
return ( events ^ START_DISCOVERY_EVT );
}
if ( events & SBP_PERIODIC_EVT )
{
// Restart timer
if ( SBP_PERIODIC_EVT_PERIOD && simpleBLEState == BLE_STATE_CONNECTED )
{
osal_start_timerEx( simpleBLETaskId, SBP_PERIODIC_EVT, SBP_PERIODIC_EVT_PERIOD );
}
// Perform periodic application task
performPeriodicTask();
return (events ^ SBP_PERIODIC_EVT);
}
// Discard unknown events
return 0;
}
/*********************************************************************************************
* @fn simpleBLECentralEventCB
*
* @brief Central event callback function.
*
* @param pEvent - pointer to event structure
*
* @return none
**********************************************************************************************/
static void simpleBLECentralEventCB( gapCentralRoleEvent_t *pEvent ){
switch ( pEvent->gap.opcode ){
case GAP_DEVICE_INIT_DONE_EVENT:{
//LCDPrintText("Central Initialized",0,PRINT_STRING);
osal_memcpy(mac_buffer[0],pEvent->initDone.devAddr, MAC_LEN);
HalLcdWriteString(bdAddr2Str( mac_buffer[0]), HAL_LCD_LINE_1);
uint32 random_scan_duration =500;//to avoid normal scan be discarded by the timer,so its lasting-time should be short
GAP_SetParamValue( TGAP_GEN_DISC_SCAN, random_scan_duration ); //random scan duration
//LCDPrintText("discovering",0,PRINT_STRING);
uint32 timeout_value = 200; // timeout_value - in milliseconds.
osal_start_timerEx(MasterSlaveSwitchTaskID, PERIOD_DETECH_EVT, timeout_value);
uint8 return_status;
if(return_status = GAPCentralRole_StartDiscovery(DISCOVERY_MODE, ACTIVE_SCAN, DISCOVERY_WHITE_LIST ))
LCDPrintText("discovery error:",return_status,PRINT_VALUE);
break;
}
case GAP_DEVICE_INFO_EVENT:{ //find a new device
// filtering device discovery results based on service UUID
//LCDPrintText("find new device",0,PRINT_STRING);
if(simpleBLEScanRes >= MAX_SCAN_RES){
GAPCentralRole_CancelDiscovery();
break;
}
if ( simpleBLEFindSvcUuid(WANTED_SERVICE_UUID, pEvent->deviceInfo.pEvtData, pEvent->deviceInfo.dataLen) ){
simpleBLEAddDeviceInfo( pEvent->deviceInfo.addr, pEvent->deviceInfo.addrType );
//GAPCentralRole_CancelDiscovery(); //stop discoverying
}
break;
}
case GAP_DEVICE_DISCOVERY_EVENT:{ //discaovery has completed
osal_stop_timerEx(MasterSlaveSwitchTaskID,PERIOD_DETECH_EVT);
//LCDPrintText("disca completed ",0,PRINT_STRING);
if ( simpleBLEScanRes > 0 ){
// connect to current device in scan result
uint8 random_select = random_num%simpleBLEScanRes;
//LCDPrintText("random_select ",random_select,PRINT_STRING);
CurrentConnectionInfo.MacType= simpleBLEDevList[random_select].addrType;
CurrentConnectionInfo.MacAddr= simpleBLEDevList[random_select].addr;
uint8 return_status;
if(return_status = GAPCentralRole_EstablishLink( LINK_HIGH_DUTY_CYCLE, LINK_WHITE_LIST, CurrentConnectionInfo.MacType, CurrentConnectionInfo.MacAddr)){
LCDPrintText("Link Error",return_status,PRINT_VALUE);
osal_set_event(MasterSlaveSwitchTaskID, MSS_CHANGE_ROLE_EVT);
}
}
else{
//LCDPrintText("no device found",0,PRINT_STRING);
osal_set_event(MasterSlaveSwitchTaskID, MSS_CHANGE_ROLE_EVT); //switch to periperal
}
break;
}
case GAP_LINK_ESTABLISHED_EVENT:{
if ( pEvent->gap.hdr.status == SUCCESS ){
//LCDPrintText("Connected",0,PRINT_STRING);
CurrentConnectionInfo.Handle= pEvent->linkCmpl.connectionHandle;
if(CharHandleSearchFlag == 1)
simpleBLECentralStartDiscovery();
else{
ClientWriteValue();
CharSendingFlag =1;
//LCDPrintText("NO NEED TO",0,PRINT_STRING);
}
}
else{
LCDPrintText("Connect Failed ",pEvent->gap.hdr.status,PRINT_VALUE);
osal_set_event(MasterSlaveSwitchTaskID, MSS_CHANGE_ROLE_EVT);
}
break;
}
case GAP_LINK_TERMINATED_EVENT:{
osal_set_event(MasterSlaveSwitchTaskID, MSS_CHANGE_ROLE_EVT);
break;
}
case GAP_LINK_PARAM_UPDATE_EVENT:
break;
default:
break;
}
}
