If the RTT Viewer does not have nRF52811...

[tony55723]

Hello,

If I don't have,where should I go to download it?

Thanks.

[haakonsh]

I suggest you ask SEGGER on their forum, my best guess is that it's a work in progress.

Does any of the other targets work with the 52811?

[tony55723]

Thank you for your reply

Okey, maybe I will use "printf" to debug first.

I want to use the Long Range of 52811, 

If do not add PA chip,

Two 52811, or a mobile phone and a 52811, the distance can reach 100m?

Is there a document on Long Range that can be referenced?

Is there still no SD81 Bluetooth5.1 direction finding SDK (maybe SDK15.4.0?)

but Long Range technology, can already be used in SDK15.3.0?

Thanks

[tony55723]

NO SD81, is SDK , sorry

[haakonsh]

With 52811's in both ends of the link transmitting at +4dBm with LR (125kbps Coded-PHY) you should be able to get 500+ meter range in line-of-sight. The range is also dependent on your throughput needs. What exactly is your throughput needs, in terms of kbps?

Each mobile phone has a different BLE performance that usually results in shorter range than what our devices are capable of. 


We do not have a reference design for direction finding yet.

[tony55723]

In addition to the distance, I need to transfer a lot of data.

Maybe 250kbps

If throughput is related to distance, I will consider how to choose

"not have a reference design" , this refers to [Bluetooth5.1 direction finding],

or [Bluetooth5.1 direction finding] + [Long Range]?

Thank you

[haakonsh]

tony55723 said:

If throughput is related to distance, I will consider how to choose

"not have a reference design" , this refers to [Bluetooth5.1 direction finding],

or [Bluetooth5.1 direction finding] + [Long Range]?

 I'm afraid I do not understand what you are asking.


At 250kbps you cannot use BLE Long Range as it's symbol rate is 125kbps. 

I suggest you use two nRF52811's with the Throughput example and measure the distance you can get with a throughput of 250kbps.