Z-Stack active scan only reports 1st network?

Steve3483

Other Parts Discussed in Thread: CC2430, Z-STACK

Hi,

On Z-stack V1.4.3/CC2430 I'm trying to get ZMacScanReq() to do an active scan. It works OK but only reports the first network it discovers.

I have three active coordinators, two on channel 11 and one on channel 19. Using a wireless analyser I can see a becon request being issued on both channels by the scan and all three coordinators respond.

The MAC_MLME_SCAN_CNF in zmac_cb.c only reports the first network and not the others.

If I power down any two of the coordinators the remaining network is discovered every time.

My request is parameterised as follows:

ZMacScanReq_t req;
req.ScanChannels = 0x07FFF800;
req.ScanType = ZMAC_ACTIVE_SCAN;
req.ScanDuration = 6;
req.ChannelPage = 0;
req.MaxResults = 5;

MAC_MlmeScanReq(&req)

Any ideas?

Thanks, Steve.

over 16 years ago

xyzzy over 16 years ago

TI__Expert 5255 points

Do each of the Coordinators have a different PanID?

Steve3483 over 16 years ago in reply to xyzzy

Intellectual 645 points

Hi,

Yes, all the devices use the IEEE address as the network extended PANID and I've checked this using an analyser.

I've since re-coded my application and now use the ZDP/ZDO ZDP_MgmtNwkDiscReq() call.

This discovers all three networks correctly - so I'm happy.

Cheers, Steve.

Markus_S over 16 years ago

Prodigy 80 points

I have exactly the same problem. Scan only returns the network that responds fastest to the beacon request.

Has anyone found a solution for this?

- Markus

yang liu97567 over 13 years ago in reply to Markus_S

Prodigy 10 points

hello,everyone,

I have the same problem too.With a month work,I've got a solution for the problem.On ZStack-CC2530-2.3.0-1.4.0,I set ZMacScanReq() to do an active scan,and I designed my code as follows:

ZMacScanReq_t my_fields;

          my_fields.ScanChannels=DEFAULT_CHANLIST;
          my_fields.ScanType=ZMAC_ACTIVE_SCAN;
          my_fields.ScanDuration=3;
          my_fields.MaxResults=0;

          ZMacScanReq( &my_fields );

And then, we can get the reports for every neighboring router include other routers in different PANS in MAC_MLME_BEACON_NOTIFY_IND in zmac_cb.c

-Liu Yang

Denz Choe over 13 years ago in reply to yang liu97567

Prodigy 50 points

Thanks Liu Yang!

Zigbee & Thread

Zigbee & Thread forum

Z-Stack active scan only reports 1st network?