nrf51822 discovery problem

[Bart de Kramer]

Hello,

I'm using the nrf51822 chip with S110. The advertising rate is 3 seconds.

I'm testing with 4 different smartphones:

1. Samsung Galaxy Xcover 3, Android 5.0.1
2. Samsung Galasy S3 Neo, Android 4.4.2
3. Samsung Galasy S4, Android 5.0.1
4. Samsung Galasy S5, Android 5.0.1

If I scan for devices I found my device on the both the S3, S4 and S5 within 20 seconds, but on the Xcover 3 I'll found my device allmost never. Also when the Xcover did discover the device it will connect hardly or never.

What could be the problem with the Xcover 3?

Bart

[endnode]

Samsung engineering?! (sorry, bad joke, I know, just couldn't resist...;)

[Øyvind Karlsen]

Hi,

Try setting the advertising rate faster, some phones have issues with slow advertising rates.

Best regards,

Øyvind

[Bart de Kramer]

Yes, That fixes the problem but I want that slow interval because of power saving. Is there something else what could fix it?

[Øyvind Karlsen]

I see. Likely the Xcover 3 only supports advertisements faster than a set rate, to still be power efficient you could advertise quickly in bursts, ie. 3 seconds of 30ms advertising intervals. and then stay off for a set time.

[Bart de Kramer]

Øyvind,

Thanks for your advice.

Best regards ,

Bart