Direction finding AOA with nRF52833

Hi,

I have program two nRF52833, one as transmitter and one as receiver (with zephyr project called "direction_finding_connectionless_tx" and "direction_finding_connectionless_tx"). I have an antenna array with 4 antenna patch.

But i have a problem, i have not the angle of arrival and i have not always the same result:

Sometimes i have the CTE that appears and sometimes not.

I have the impression that the main stop at the line 359:

My receiver see my transmitter as you can see but what i have to do to see the angle of arrival ?

Please i'm lost and if someone can help me i'm more than interested.

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