how to delete duplicate BLE device

[bluebt]

When scanning, how to delete duplicate BLE device display, I found a function gap_set_scan_duplicate_filter(1); found invalid after calling.

[Matthias Ringwald]

Hi bluebt

Could you explain what happens after you call gap_set_scan_duplicate_filter(1).
it depends on the Bluetooth Controller how well it filters duplicates, e.g. or how many items it can cache.

I would recommend to keep a list or bd_addr in your application, and only report a new device if it's not already in the list.

Best
Matthias

> On 12 Apr 2023, at 13:59, bluebt <qq1438...@gmail.com> wrote:
>
> When scanning, how to delete duplicate BLE device display, I found a function gap_set_scan_duplicate_filter(1); found invalid after calling.
>

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