URGENT : Just works Pairing doesn't work !!!! Please help

ToTo ToTO

Other Parts Discussed in Thread: BLE-STACK

I want to do "just works" pairing with bonding but i didn't even arrive to do "just works" without bonding.

Central : Soft used : SimpleBLEcentral with this configuration :

uint8 pairMode = GAPBOND_PAIRING_MODE_INITIATE;
uint8 mitm = FALSE;
uint8 ioCap = GAPBOND_IO_CAP_NO_INPUT_NO_OUTPUT;
uint8 bonding = FALSE;

Peripheral: used sof : KeyFob with this configuration :

uint8 pairMode = GAPBOND_PAIRING_MODE_WAIT_FOR_REQ;
uint8 mitm = FALSE;
uint8 ioCap = GAPBOND_IO_CAP_NO_INPUT_NO_OUTPUT;
uint8 bonding = FALSE;

The problem , is that , there is no Sexurity enabled; or encryption starting. Please can you help me ? what is the problem ?

first picture is this one : start connection+ start pairing

Second picture : pairing failed, no security enabled

over 9 years ago

0 Tim C over 9 years ago

TI__Mastermind 34660 points

The error response you are pointing to does not relate to pairing at all. It is the response to the previous ATT_Find_By_Type_Value_Req. Can you attach the entire sniffer capture?

0 JXS over 9 years ago

TI__Guru** 105180 points

In addition, please specify the version of the TI BLE-Stack SDK you used.

Best wishes

0 ToTo ToTO over 9 years ago in reply to Tim C

Intellectual 490 points

Ok, understood, maybe because there is discrovery of a characteristic that doesn't exist in the peripheral side. But , why there is no encryption ? i must see security enabled in the packets . i don't know how attach , but there is no difference, that 's exactly waht in the pictures. and i finished sniffing after it , because they are the same packets after that

0 ToTo ToTO over 9 years ago in reply to JXS

Intellectual 490 points

i'm using the soft i found in BLE-CC254x-1.4.2.2 when i installed a TI tool ( i don't know what is it) . it added a directory on c/ texas instruments

0 ToTo ToTO over 9 years ago in reply to Tim C

Intellectual 490 points

i attached it Tim C. Any idea ?

0 Tim C over 9 years ago in reply to ToTo ToTO

TI__Mastermind 34660 points

Hi. I don't see the capture anywhere?

0 ToTo ToTO over 9 years ago in reply to Tim C

Intellectual 490 points

i attached it after your comment . look at my post, on the top

0 Tim C over 9 years ago in reply to ToTo ToTO

TI__Mastermind 34660 points

Ok I see it. Are you sure that you are actually using the variables that you are setting? That is, you should see these variables used with their respective GAPBondMgr parameter, such as:

uint8 bonding = FALSE;
GAPBondMgr_SetParameter( GAPBOND_BONDING_ENABLED, sizeof( uint8 ), &bonding );

In any case, I just tested this using the parameters you have and the devices pair successfully. Here is the capture:

/cfs-file/__key/communityserver-discussions-components-files/538/pairing-example.psd

I don't know what is different in your environment so I would recommend reinstalling the stack and trying again: www.ti.com/blestack

0 ToTo ToTO over 9 years ago in reply to Tim C

Intellectual 490 points

Yes they are set all. i have GAPBondMgr_SetParameter for each parameter. like in the simpleBlecentral, it's the same code i just modified the flags to have "just works" pairing.
I see that the difference is only for you it starts the encryption and for me it's not . That may be what?? How can be a difference in the stack, ? i took the project from the same directory, . I mean the keyfob example and the simpleBLEcentral are both taken from the same version . When i downloded one of the tools it came with it under "C:\Texas Instruments\BLE-CC254x-1.4.2.2\Projects\ble"
Any idea ?

0 Tim C over 9 years ago in reply to ToTo ToTO

TI__Mastermind 34660 points

No I have no idea but the fact that mine works with a fresh stack install means you must have modified something. Please delete and reinstall the stack.

0 ToTo ToTO over 9 years ago in reply to Tim C

Intellectual 490 points

Ok , then i ll try to followw you instructions and give feedback . cya

0 ToTo ToTO over 9 years ago in reply to Tim C

Intellectual 490 points

I came back to the original project and it works , you're right.
In fact in my project i modified some, i cancelled the Key prcoess, and i did an automatic process: scan-> if there is a device connect to it -> discovery sercvices. if there is no device , the system rescan . I think it's related to something, like timers, in fact i used "osal_start_timerEx()" and so i needed to activate timer on the project->options ->preprocessor. Do you think it's related to that . here is all the configuration of the preprocessor :
INT_HEAP_LEN=3072
HALNODEBUG
OSAL_CBTIMER_NUM_TASKS=2 ( this it was =1 i changed it to 2 and it didn't work)
HAL_AES_DMA=TRUE
HAL_DMA=TRUE
HAL_LED=FALSE
HAL_KEY=FALSE
HAL_TIMER=TRUE
HAL_LCD=FALSE

This is a aprt of the code for the automatic process, it's easy, i just added the event "START_PROCESS_EVT" to start the scanning and it's after START_DEVICE_EVT. Here is a part of what i did :

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 );

//start the system process in 2s
osal_start_timerEx( simpleBLETaskId, START_PROCESS_EVT, 2000);
return ( events ^ START_DEVICE_EVT );
}

if ( events & START_DISCOVERY_EVT )
{
simpleBLECentralStartDiscovery( );

return ( events ^ START_DISCOVERY_EVT );
}

if ( events & SBP_CONN_TIMEOUT_EVT) // i added this to avoid the case when i try to connect and the device in no treachable any more
{
// a connection establishement error
GAP_TerminateLinkReq( simpleBLETaskId, 0xFFFE, 0 ); // cancel the pending connection request
simpleBLEState = BLE_STATE_IDLE;
simpleBLEConnHandle = GAP_CONNHANDLE_INIT;
simpleBLERssi = FALSE;
simpleBLEDiscState = BLE_DISC_STATE_IDLE;
simpleBLECharHdl = 0;
simpleBLEProcedureInProgress = FALSE;
// restart scanning again
simpleBLECentral_HandleKeys(TRUE,HAL_KEY_UP);

return ( events ^ SBP_CONN_TIMEOUT_EVT);

}
if ( events & START_PROCESS_EVT) // this added to start the automatic process : scan ->connection if there is a device ...
{
//start scan for devices
simpleBLECentral_HandleKeys(TRUE,HAL_KEY_UP);

return ( events ^ START_PROCESS_EVT);
}

// Discard unknown events
return 0;
}

0 ToTo ToTO over 9 years ago in reply to ToTo ToTO

Intellectual 490 points

Ok, i find the problem. It's not related to the stack it a mistake in the code. When i implemented my process, i forget to add an "else" :
case GAP_DEVICE_DISCOVERY_EVENT:
{
// discovery complete
simpleBLEScanning = FALSE;

// if not filtering device discovery results based on service UUID
if ( DEFAULT_DEV_DISC_BY_SVC_UUID == FALSE )
{
// Copy results
simpleBLEScanRes = pEvent->discCmpl.numDevs;
osal_memcpy( simpleBLEDevList, pEvent->discCmpl.pDevList,
(sizeof( gapDevRec_t ) * pEvent->discCmpl.numDevs) );
}

/*LCD_WRITE_STRING_VALUE( "Devices Found", simpleBLEScanRes,
10, HAL_LCD_LINE_1 );*/
if ( simpleBLEScanRes > 0 )
{
//start connection process
simpleBLECentral_HandleKeys(TRUE,HAL_KEY_CENTER);
}

// initialize scan index to last device
//simpleBLEScanIdx = simpleBLEScanRes;

// restart scanning process
simpleBLECentral_HandleKeys(TRUE,HAL_KEY_UP); ====================> here an "else" is missed
}
break;

What i wanted is to restart scan in case there is no device found, so that means "else=if simpleBLEScanRes ==0" . Here so i retart scan after i establish link connection..it made a confusion to the system. I hope that helps the readers and guys may face such a problem.

Thanks for you guys for help.

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URGENT : Just works Pairing doesn't work !!!! Please help