Compiler/CC2640R2F: Bluetooth® forum

Heinrich Hertz

Part Number: CC2640R2F

Tool/software: TI C/C++ Compiler

Hello !

I'am using ble5_simple_central_cc2640r2lp project. Used from sdk starting from 2.20.00.49 and ending 3.10.00.15. In the project I fixed only one line

// TRUE to filter discovery results on desired service UUID
#define DEFAULT_DEV_DISC_BY_SVC_UUID          FALSE

And I was faced with the problem that when I scan, it sometimes displays duplicate mac addresses, but with different RSSI.

over 6 years ago

0 J Lindh over 6 years ago

TI__Guru 57865 points

Hi Heinrich,
What type of devices did you have advertising?

0 Heinrich Hertz over 6 years ago in reply to J Lindh

Intellectual 760 points

If I load the project simple_central_cc2640r2lp project, then there is no such bug, all 8 devices that he found will be with different mac addresses.

0 Aslak N. over 6 years ago in reply to J Lindh

TI__Mastermind 23440 points

Hi Heinrich,

This seems to be a bug. It seems that after the first 16 devices seen, the implicit GapScan duplicate filtering does not work. I've filed a bug report.

You could however do this manually, as is the case in the example when DEFAULT_DEV_DISC_BY_SVC_UUID is set to TRUE. Sorry for the inconvenience.

Best regards,
Aslak

0 Heinrich Hertz over 6 years ago in reply to Aslak N.

Intellectual 760 points

Hi Aslak,

I wanted to know if the bug is fixed? And if not, could you help me fix it?

0 Aslak N. over 6 years ago in reply to Heinrich Hertz

TI__Mastermind 23440 points

Hi,

This is not resolved yet.

If you want to manually do duplicate filtering, there is a point in your application where you are told about new advertisements that have been seen. At that point, you can compare the device address of the new advertisement report with the addresses you have stored in your local list of devices, and choose to not add it if it's already there. I don't have a code example for this.

Best regards,
Aslak

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