CC2640R2F执行GATT_UpdateMTU(connectionHandle, mtuSize)时遇到的问题

void autoUpdateMTU(void)
{          
  uint16_t connectionHandle = NULL;
  uint16_t mtuSize = 30;
  GAPRole_GetParameter(GAPROLE_CONNHANDLE, &connectionHandle);     

  myLog("peripheral","processStateChangeEvt=>GATT_ExchangeMTU:%d %d \r\n",
                      GAPROLE_CONNHANDLE,
                      GATT_UpdateMTU(connectionHandle, mtuSize));     
} 

调用

      // If RTOS queue is not empty, process app message.
      if (events & SBP_QUEUE_EVT)
      {
        while (!Queue_empty(appMsgQueue))
        {
          sbpEvt_t *pMsg = (sbpEvt_t *)Util_dequeueMsg(appMsgQueue);
          if (pMsg)
          {
            // Process message.
            SimplePeripheral_processAppMsg(pMsg);

            // Free the space from the message.
            ICall_free(pMsg);
            if(toUpdateMTU){
              toUpdateMTU = 0;
              autoUpdateMTU();
            }
          }
        }
      }