CC2640R2F: receiving status code 0x31 in pPkt->hdr.status

Hi Ali,

Have you modified the code or is this out of box behaviour? How long does it take to reproduce?

Hi Joakim

I've modified ble5_project_zero_cc2640r2lp_app. I've added some phases to project which are controlled by clock object to start/stop advertising on specific times. I've also added POWER_SAVING to predefined symbols. There is no certainty about when this error occurs. it occurs randomly. sometimes it doesn't occur. sometimes it occurs few seconds after resetting launchpad and sometimes occurs few minutes after resetting launchpad. I have to note that most of the times it doesn't occur. But I have to find the reason to handle this error because it disables advertising and it ruins my scenario. Is there a way to get rid of this type of fake connections. what is 0x31 error ? how can I handle connection failure scenarios? 

Here I attach screenshot of putty :

Regards, Alireza

Hi Alireza,

This status is defined in the bcomdef.h file: 

#define bleGAPConnNotAcceptable         0x31  //!< The connection was not accepted

Normally, reasons for this happening can be: 

- connection creation has been canceled.

- directed advertising ended without a connection being formed

- Slave received a connection request with an invalid combination of connection parameters.

Does any of them ring a bell? If you can take a sniffer log of this happening w can try to figure out why.

Also, you can work-around this in the application by only stopping advertising if the gap_link_established event has an error status.

Hi Marie,

As you mentioned above, all those reasons shouldn't cause establishing a successful connection. The problem here is after getting this error , the number of BLE connections shouldn't increase. but it increases as you see in below picture

linkDB_NumActive()

The above function will return 1 after this error so

if(linkDB_NumActive() < MAX_NUM_BLE_CONNS)
        {
            Log_info1("Continue to Advertise, %d possible connection remain", MAX_NUM_BLE_CONNS - linkDB_NumActive());
            // Start advertising since there is room for more connections
            GapAdv_enable(advHandleLegacy, GAP_ADV_ENABLE_OPTIONS_USE_MAX, 0);
        }
        else
        {
            Log_info1("Max Number of Connection reach: %d, Adv. will not be enable again", linkDB_NumActive());
        }

above condition in GAP_LINK_ESTABLISHED_EVENT will be FALSE while we don't have a successful connection and it will disable advertising. But I think we should expect linkDB_NumActive() return 0 after canceled connection to continue advertising.

Also the following API is not available in icall_ble_api.h

#define linkDB_Remove(...)                       (AssertHandler(0,0))

and the following function didn't help us too:

static uint8_t ProjectZero_removeConn(uint16_t connHandle)

Is there a way to remove this link from linkDB in order to have linkDB_NumActive() return 0?

I want to continue advertising after getting bleGAPConnNotAcceptable.

Cheers, 
Alireza.

Hi Marie,

Today I checked new SDK's  changelog (http://software-dl.ti.com/simplelink/esd/simplelink_cc2640r2_sdk/3.20.00.21/exports/changelog.html) but I couldn't find anything about this issue. neither in fixed issues nor in known issues of ble5stack. 

will this get fixed in next version of SDK?

Cheers, 
Alireza.