Announcements
Community Announcement : Welcome to the NEW Cypress Developer Community.
cancel
Showing results for 
Search instead for 
Did you mean: 

PSoC 4

Anonymous
Not applicable

Hello,

   

I'm working with the MADY40 C# example. I'm seeing some strange behavior where multiple identical instances of a device will show up in the scan list. This issue is intermittent.

   

Has anyone else seen this? 

   

Thank you!

   

Helen

0 Likes
5 Replies
Anonymous
Not applicable

The scanning operation itself for bluetooth will receive packets from every device every time it sends out a "scan" ping. It could very well be that you aren't filtering the scanning packets to ignore/discard repeated scan response packets from the device(s).

0 Likes
Anonymous
Not applicable

Yes, that's true; however, it appears that the packets are supposed to be filtered in the example:

   

BLEManager.StartScan(new CyBleScanSettings(CyScanType.PASSIVE_SCAN, DEFAULT_SCAN_INTERVAL, DEFAULT_SCAN_WINDOW, CyInitiatorAddrType.PUBLIC, CyScanInitiatorFilterPolicy.ACCEPT_ALL_ADV, CyDiscoveryType.OBSERVATION_PROCEDURE, DEFAULT_SCAN_TIMEOUT, CyScanDuplicateFilterPolicy.ENABLE_DUPLICATE_FILTERING), ScanCallBack);

   

CyScanDuplicateFilterPolicy.ENABLE_DUPLICATE_FILTERING should enable scan advertisement duplicate filtering.

0 Likes
Anonymous
Not applicable

Hmmm, I haven't run into this. Perhaps someone else has input? 🙂

0 Likes
Anonymous
Not applicable

Hi,

   

So far I haven't seen this issue in that example. Have you done any modification to the project? If so what are those? Can you please attach your modified code here?

   

Regards,

   

-Madhu Sudhan

0 Likes
Anonymous
Not applicable

No, I have not modified the project at all.

   

Thanks, Helen!

0 Likes