I cannot get AOA data in ncs2.4.0 sample: direction_finding_connectionless_rx

[brook]

hardware: DK:
nrf52833dk_nrf52833

ncs:2.4.0

sample: direction_finding_connectionless_rx   

I cannot run into create_sync() after the scan_enable() is runed.

I can find many advertising package. 

[DEVICE]: 41:26:6F:32:02:01 (public), AD evt type 3, Tx Pwr: 127, RSSI -54 C:0 S:0 D:0 SR:0 E:0 Prim: LE 1M, Secn: No packets, Interval: 0x0000 (0 ms), SID: 255

 

but the interval always is 0. and SID always is 255.

I cannot find : success. Periodic sync established.

So, never run to receive CTE.

In the callback for scan : scan_recv().   the condition would never match.

if (!per_adv_found && info->interval != 0)  // so, the code in it would never run.

{

   per_sid = info->sid;   // never run

    k_sem_give();

}

what cause this?

how can I run to get the CTE ?   what requirement we need?

there is a device sending  AOA package always. this package can be received by other products.

thanks.

[Elfving]

Hello,

Are you running the Rx sample along with the tx sample? Are you using an antenna array?

Regards,

Elfving

[brook]

I run without antenna array.
I use two DK (nRF52833).  they are both one antenna.
one DK run 

direction_finding_connectionless_tx

another DK run 

direction_finding_connectionless_rx
I just cannot run out of 

err = k_sem_take(&sem_per_adv, K_FOREVER);

So, I cannot create_sync().

[Elfving]

So of course you wouldn't be able to get any good results without an antenna matrix, but you should be able to get a connection with just the one antenna.

Though I believe you would have to insert a coax swf cable on the antenna connector on J1 for it to work.

Regards,

Elfving

[brook]

absolutely， I get CTE IQ data using the same two DK without antenna matrix .

the Code is Direction Central and peripheral .    

this need central and peripheral is connected.

But,  I need to get CTE IQ data without connect.   I think the antenna is ok (any way, I would not expect to get AOA with one antenna. But I can get some IQ samples.)

I think the code must run into some trouble.

[Elfving]

I am not sure if I understand.

Are you saying that you get this working when using direction_finding_connectionless_tx & direction_finding_connectionless_rx, but with Direction Central and peripheral it does not work?

I believe it should work in the same way on both, in regards to what it is required for it to end up getting CTEs.

Regards,

Elfving