RTOS: Problem with MultiRole BLE

Do you use LAUNCHXL-CC2640R2? If so, which SDK version do you use?

The Last SDK, yes CC2640R2 LAUNCH

Do you check if UART output of your multi-role shows it doing advertising?

No, I don't see this. When I connect with MultiRole the first time and disconnect, the multirole is it invisible for BLE

Do you open teraterm or Putty on application com port simulated by LAUNCHXL-CC2640R2 and check the UART output messages from multi-role example?

Hi Mark,

Can you run a debug session and after this happens pause it and post a screenshot?

Can you double-check that no other device is connecting to your CC2640R2 device?

I'm using the MultiRole for a simple reason. Communicate with him via my APP and another device. When I connect only with the device, the first time it works, the second time it disappears from the available devices

Please post what you see on your multi-role UART output.

Hi Yikai, I used the SimpleLink SDK 2.40 and this is my UART output. 

I connect with my device only 1 times, after I don't see the my device in the list of device avaible

What terminal tool do you use? Can you try Putty or teraterm and repost UART output again?

Hercules, it the same thing

Please do what I suggest.

You see? It’s different display on Putty/Teraterm.

Ok, Why when I disconnect from the MultiRole doesn't it come out of the available devices anymore?

I suppose you have to operate UART UI to start scan or advertising again.

Why? Can't I make that once disconnected, come back again available for other devices?

The default behavior is not like that and I suppose You can revise application logic to make it.

what is the part to modify?

You can restart advertising in "case GAP_LINK_TERMINATED_EVENT:..." of multi_role_processRoleEvent.

Hi Mark,

What BLE-Stack, SDK and example are you using?

Can you use a Bluetooth sniffer to check if the CC2640 is advertising after the connection has been terminated?

Can you run a debug session, then pause when this happens and post a sceen shot of the call stack?

Hi YiKai Chen, How can I modify this part?

I had suggested “You can restart advertising in "case GAP_LINK_TERMINATED_EVENT:..." of multi_role_processRoleEvent.”

Yes, I understand. Should I commented something?

case GAP_LINK_TERMINATED_EVENT:
    {
      // read current num active so that this doesn't change before this event is processed
      uint8_t currentNumActive = linkDB_NumActive();

      // Find index from connection handle
      connIndex = multi_role_mapConnHandleToIndex(pEvent->linkTerminate.connectionHandle);

      // Check to prevent buffer overrun
      if (connIndex < maxNumBleConns)
      {
        // Clear screen, reset discovery info, and return to main menu
        connHandleMap[connIndex].connHandle = INVALID_CONNHANDLE;

        // Reset discovery info
        discInfo[connIndex].discState = BLE_DISC_STATE_IDLE;
        discInfo[connIndex].charHdl = 0;
       // discInfo[connIndex].charHdl1 = 0;


        // Disable connection item from connectable menus
        tbm_setItemStatus(&mrMenuGattRw, TBM_ITEM_NONE, (1 << connIndex));
        tbm_setItemStatus(&mrMenuConnUpdate, TBM_ITEM_NONE, (1 << connIndex));
        tbm_setItemStatus(&mrMenuDisconnect, TBM_ITEM_NONE, (1 << connIndex));

        // If there aren't any active connections
        if (currentNumActive == 0)
        {
          // Disable connectable menus
          tbm_setItemStatus(&mrMenuMain, TBM_ITEM_NONE,
                            TBM_ITEM_2 | TBM_ITEM_3 | TBM_ITEM_4);

          // Stop periodic clock
          Util_stopClock(&periodicClock);
        }

        // Clear screen
        Display_print1(dispHandle, MR_ROW_CONN_STATUS, 0, "Connected to %d", linkDB_NumActive());
        Display_print0(dispHandle, MR_ROW_STATUS1, 0, "Disconnected!");

        // If it is possible to advertise again
        if (currentNumActive == (maxNumBleConns-1))
        {
          Display_print0(dispHandle, MR_ROW_ADV, 0, "Ready to Advertise");
          Display_print0(dispHandle, MR_ROW_STATUS2, 0, "Ready to Scan");
        }
      }
    }
    break;

I suppose you need to add code to make it restart advertising after disconnection.

Hi Mark,

Per defualt the example is supposed to re-start advertising after disconnection.

What BLE-Stack, SDK and example are you using?

Can you use a Bluetooth sniffer to check if the CC2640 is advertising after the connection has been terminated?

Can you run a debug session, then pause when this happens and post a sceen shot of the call stack?

Yes, I use the SDK 2.40 for CC2640. If I connect the first time, the second time the device not is available