MC13213- Problem on perfoming check on MAC code bases extended address

AmZig — Wed, 12 Dec 2007 23:23:19 GMT

Hello everyone ,

I am working on an application scenario (non beacon mode), where all my devices are using MAC addresses. After one day long fighthing with MAC extended address i made it worked. Now i could see at my sniffer that all my devices are using Extended address for transmission.

Now , while trying to put a check that , if i have a MAC of device already stored in my database . My device will not assosciate with that master and find another master if it exist. For this purpose i am using information gained during the Scan procedure to compare with my stored value. And to check wether is there any value stored or return , i am printing it too.
The printing is working and i could see that i am storing those addresses, but in comparison its not working. The most amazing this is that if changed my condition if(pPanDesc->coordAddress !=maDeviceLongAddress ) , it ll print the values wriiten in conditon , means it considering it true. But when i tried to put == , it wont work. The addresses maDeviceLongAddress , pPanDesc->coordAddress and testaddr are all same and of one device.

I am in confusing state , as everything is fine and working , but why it come to comaprison its not working.

Anyone who has worked with MAC address or comparison , kindly guide me.

static uint8_t App_HandleScanActiveConfirm(nwkMessage_t *pMsg)
{
uint8_t panDescListSize   = pMsg->msgData.scanCnf.resultListSize;
panDescriptor_t *pPanDesc = pMsg->msgData.scanCnf.resList.pPanDescriptorList ;
uint8_t rc = errorNoScanResults;

UartUtil_Print("The address of the device in my range123 .......\n");
      UartUtil_Print("\n.0x"); UartUtil_PrintHex((uint8_t *)maDeviceLongAddress,8,0) ;
      UartUtil_Print("Done\n");

/* Check if the scan resulted in any coordinator responses. */
if(panDescListSize != 0)
{
    /* Initialize link quality to very poor. */
    uint8_t i, bestLinkQuality = 0;

    /* Check all PAN descriptors. */

    for(i=0; i<panDescListSize; i++, pPanDesc++)
    {
      UartUtil_Print("The loop.......\n");
       UartUtil_PrintHex(&panDescListSize,1,0) ;
       UartUtil_Print("The loop2.......\n");
       UartUtil_PrintHex(&pPanDesc,1,0) ;


      /* Only attempt to associate if the coordinator
         accepts associations and is non-beacon. */
      if( ( pPanDesc->superFrameSpec[1] & gSuperFrameSpecMsbAssocPermit_c) &&
          ((pPanDesc->superFrameSpec[0] & gSuperFrameSpecLsbBO_c) == 0x0F) )
      {

         FLib_MemCpy(testaddr,pPanDesc->coordAddress,8);
         UartUtil_Print("The address of the device in my range321 .......\n");
      UartUtil_Print("\n.0x"); UartUtil_PrintHex((uint8_t *)testaddr,8,0) ;
      UartUtil_Print("Done\n");


         if(pPanDesc->coordAddress==maDeviceLongAddress )
          {


             UartUtil_Print("Hello world \n");

             UartUtil_Print("The address of the device in my range654 .......\n");
            UartUtil_Print("\n.0x"); UartUtil_PrintHex((uint8_t *)maDeviceLongAddress,8,0) ;
             UartUtil_Print("Done\n");

             UartUtil_Print("The address of the device in my range456 .......\n");
      UartUtil_Print("\n.0x"); UartUtil_PrintHex((uint8_t *)testaddr,8,0) ;
      UartUtil_Print("Done\n");



          /* Save the information of the coordinator candidate. If we
             find a better candiate, the information will be replaced. */
             FLib_MemCpy(&mCoordInfo, pPanDesc, sizeof(panDescriptor_t));




            UartUtil_Print("Found a coordinator with the following properties:\n");
            UartUtil_Print("----------------------------------------------------");
            UartUtil_Print("\nAddress...........0x"); UartUtil_PrintHex(mCoordInfo.coordAddress, mCoordInfo.coordAddrMode == gAddrModeShort_c ? 2 : 8, 0);
            UartUtil_Print("\nPAN ID............0x"); UartUtil_PrintHex(mCoordInfo.coordPanId, 2, 0);
            UartUtil_Print("\nLogical Channel...0x"); UartUtil_PrintHex(&mCoordInfo.logicalChannel, 1, 0);
            UartUtil_Print("\nBeacon Spec.......0x"); UartUtil_PrintHex(mCoordInfo.superFrameSpec, 2, 0);
            UartUtil_Print("\nLink Quality......0x"); UartUtil_PrintHex(&mCoordInfo.linkQuality, 1, 0);
            UartUtil_Print("\n\n");

           rc = errorNoError;

          }

      }
    }
}
/* ALWAYS free the PAN descriptor list */
MSG_Free(pMsg-> msgData.scanCnf.resList.pPanDescriptorList);

return rc;
}

Re: MC13213- Problem on perfoming check on MAC code bases extended address

Ware — Thu, 13 Dec 2007 22:10:58 GMT

I am pretty sure CodeWarrior can't do an 8byte compare as you have it written:

if(pPanDesc->coordAddress !=maDeviceLongAddress )

You'll have to use (or write your own) 8byte compare function... like the one that is available on line 105 of "BeeCommon.h".

/* are the two addresses equal— */
bool_t IsEqual8Bytes(zbIeeeAddr_t aIeeeAddr1, zbIeeeAddr_t aIeeeAddr2);

Regards,

- Ware

topic MC13213- Problem on perfoming check on MAC code bases extended address in 8-bit Microcontrollers

MC13213- Problem on perfoming check on MAC code bases extended address

Re: MC13213- Problem on perfoming check on MAC code bases extended address