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().

[brook]

the DK works like this.

[Elfving]

Right. Do you have a coax UFL cable? I don't think it will connect without it inserted.

Regards,

Elfving

[brook]

thanks, Elfving.

but, I think the coax cable make no difference.

for  in the sample of (central and peripheral ).  I did not use coax cable either.

P.S,   who give the interval and SID. the device advertising? 

thanks.

[Elfving]

brook said:

for  in the sample of (central and peripheral ).  I did not use coax cable either.

I just tried it again myself. And yeah for the central and peripheral, it doesn't seem to make a difference there. I do not know why the connectionless samples and the ones with connection work differently in regards to this.

With the connectionless sample though, you do need the SWF cable to break the signal to the internal antenna in order for it to connect. 

Regards,

Elfving

[brook]

thanks

[xu shengxian]

Hello, I have encountered the same problems as you, and every problem is the same as you! I have been troubled by this for a long time. Have you successfully solved this problem in the end? Is it true that the problem was solved after using SWF cables? Thank you in advance!！