CCS/CC2640R2L: Simple Central Error "Encryption Failed"

Hi Dhiego,

I have assigned an expert to help you on this issue you are seeing. In the meantime I had some clarification questions for you:

- Can you provide sniffer logs please to better help with the debugging?

- Is it possible to perform your test using the same launchpads? For instance two CC2640 or two CC26x2R1?

- Is it possible to perform your test using the LPs you have listed, but the same SDK?

My goal with the last two tests is to provide as much information on what this issue could be stemming from. Thanks!

Best Regards,

Jenny

Hello,

To continue the development, I'm using two pci with cc2640 and the same sdk.

I removed the two_btn_menu from simple_central and added a state machine to execute the commands.

The device connects but loses the connection after a few seconds.

static void Ble_StateMachineControl(UArg a0){
    switch(GL_State_Machine) {

       case STATE_IDLE  : //1
           GL_State_Machine = STATE_SEARCHING;
          break;

       case STATE_SEARCHING  : //2
           if(SimpleCentral_enqueueMsg(SC_EVT_SCAN_ENABLED, SUCCESS, NULL) == SUCCESS)
               GL_State_Machine = STATE_CONNECTING;
          break;

       case STATE_CONNECTING  : //3
           GL_State_Machine = STATE_IDLE;
           for(uint8_t i=0; i<numScanRes; i++){
               if(SimpleCentral_enqueueMsg(SC_EVT_CONNECT_ENABLED, i, NULL) == SUCCESS)
                   GL_State_Machine = STATE_STATUS;
           }
          break;

       case STATE_STATUS  : //4
           GL_State_Machine = STATE_SEARCHING;
           if(numConn>0)
               GL_State_Machine = STATE_READING_DATA;
          break;

       case STATE_READING_DATA  : //5
           GL_State_Machine = STATE_IDLE;
           for(uint8_t i=0; i<numConn; i++){
               if(SimpleCentral_enqueueMsg(SC_EVT_READDATA_ENABLED, i, NULL) == SUCCESS)
                    GL_State_Machine = STATE_READING_DATA;
           }

          break;

       default :
           GL_State_Machine = STATE_IDLE;
           break;

    }

And added the following code in the function static void SimpleCentral_processAppMsg(scEvt_t *pMsg).

    case SC_EVT_SCAN_ENABLED:
      SimpleCentral_doDiscoverDevices(0);
      break;

    case SC_EVT_CONNECT_ENABLED:
      SimpleCentral_doConnect(pMsg->hdr.state);
      break;

    case SC_EVT_READDATA_ENABLED:
        scConnHandle = connList[pMsg->hdr.state].connHandle;
        SimpleCentral_doReadData(0x20);

      break;

Do I need more commands to maintain the connection?

Dhiego,

I tested the stock projects where the only modification was to set up the UUID filtering on the Observer settings of the simple_central Sysconfig file. I was able to retain the connection throughout the process. 

I am using the exact same setup as you: a CC2640R2F on the simple_peripheral and a CC26x2R1 on the simple_central.

In this case, I suspect that may be some specific leftover configuration that may be preventing the central from acknowledging the Services on the peripheral for filtering. Could you step back and start from the known good configuration on both projects and start adding your modifications instead?

At first glance the snippet of code you sent does not have anything blatantly wrong, but I would definitely check if the filtering in the SC_EVT_ADV_REPORT is still present in your code - basically the code highlighted below:

#if (DEFAULT_DEV_DISC_BY_SVC_UUID == TRUE)
      if (SimpleCentral_findSvcUuid(SIMPLEPROFILE_SERV_UUID,
                                    pAdvRpt->pData, pAdvRpt->dataLen))
      {
        SimpleCentral_addScanInfo(pAdvRpt->addr, pAdvRpt->addrType);
        Display_printf(dispHandle, SC_ROW_NON_CONN, 0, "Discovered: %s",
                       Util_convertBdAddr2Str(pAdvRpt->addr));
      }

Hope this helps,

Rafael