/********************************************************************* * @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; } }