Angle of arrival application to see switching on nrf52833 board

[yalcinPak]

Hello , I have a problem on angle of arrival application to see switching nrf52833 board

I use nrf52833 dev board. I use 2.0.0 as sdk version. I use nrf/samples/Bluetooth/direction_finding_connectionless_rx .

I can’t see overlay-aoa.conf in Kconfig. There is aod-overlay.conf. So I only choose boards\nrf52833dk_nrf52833.conf.

I flashed my nrf52833 board. But I couldn’t see switching at pin3,pin4, pin28 or pin29 using oscilloscope.

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Nrf52833dk_nrf52833.conf file is at below

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Nrf52833dk_nrf52833.overlay file is at below

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I was expecting to see overlay-aoa.conf file. Because I use rx . Am I wrong ?

There is overlay-aod.conf file and you can see at below

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Prj.conf file is at below

Here in general

[Amanda Hsieh]

Hi, 

Please have a look at Bluetooth: Direction finding connectionless locator which provides overlay-aod.conf; overlay-aoa.conf is provided by the Direction finding connectionless beacon sample. 

Regards,
Amanda

[yalcinPak]

I already have a looked at these two sample. My rx and tx boards are connected each other . I can see data on my terminal. But in my rx board , I couldn't see switching for antenna array.

[Amanda Hsieh]

Hi, 

Do you connect an antenna boar with the rx board? Have a look at Antenna matrix configuration for angle of arrival mode. 

-Amanda

[yalcinPak]

First I tried without connecting an antenna board with rx board. ( I think I still should be able to see switching  gpio3,4,28,29 pins).I can see high or low voltage level on gpio3,4,28,29 according to dfe-pdu-antenna value  When I change  dfe-pdu-antenna value. 

Secondly I tried with connecting an antenna board with rx board. Again I couldn't see gpio switching , in my rx board.

Can I see switching without antenna array? 

[Amanda Hsieh]

Hi, 

It requires an antenna board to get antenna switching.  

yalcinPak said:

Secondly I tried with connecting an antenna board with rx board. Again I couldn't see gpio switching , in my rx board.

What antenna board are you using? Do you use a Nordic Semiconductor design 12 patch antenna board? If not, do you read Antenna matrix configuration for angle of arrival mode. and update as the documentation suggests?

To successfully use the direction finding locator when the AoA mode is enabled, provide the following data related to antenna matrix design:

• Provide the GPIO pins to dfegpio#-gpios properties in nrf52833dk_nrf52833.overlay file

• Provide the default antenna that will be used to receive PDU dfe-pdu-antenna property in nrf52833dk_nrf52833.overlay file

• Update the antenna switching patterns in ant_patterns array in main.c.

-Amanda