RE: NRF52811 AoA Mode Config

Sigurd — Wed, 06 Nov 2019 17:48:11 GMT

Hi,

[quote userid="80234" url="~/f/nordic-q-a/53729/nrf52811-aoa-mode-config"]Is the CTE automatically appended, if configured correctly?
Is the CTE frame automatically detected by the radio and IQ/MagPhase samples writen to DFEPACKET.PTR?
This seems the case base on what I've read.[/quote]

Correct. Once configured the radio just appends the CTE to whatever packet is transmitted.

Take a look at this post.

[quote userid="80234" url="~/f/nordic-q-a/53729/nrf52811-aoa-mode-config"]My goal is to append the CTE frame too a standard advertisement frame.[/quote]

The current releases of the SoftDevice does not support direction finding functionality.

[quote userid="80234" url="~/f/nordic-q-a/53729/nrf52811-aoa-mode-config"]Are there SoftDevice API calls for the radio registers related to direction finding?[/quote]

No.

[quote userid="80234" url="~/f/nordic-q-a/53729/nrf52811-aoa-mode-config"]If not must the registers be set before nrf_sdh_enable_request() is called [ble_stack_init()] or after?[/quote]

If you intend to use the SoftDevice with direction finding, you would have to configure and send the packets yourself in a SoftDevice timeslot, using the RADIO peripheral directly.

[quote userid="80234" url="~/f/nordic-q-a/53729/nrf52811-aoa-mode-config"]Is it necessary to config the GPIO via the GPIO peripheral, if the gpio is only used for switching?[/quote]

It's recommended to do it. As mentioned here, "To secure correct signal levels on the pins, the pins must be configured in the GPIO peripheral as described in Pin configuration.". (so set the DIRSET and OUT register of the pins used in the GPIO peripheral).