AWR2243BOOST: RAW CSI format

This is part of the configuration that is sent by the HOST: # ADC Samples, # Chirps

Thank you

Cesar

Is there any calculation formula for this?

How do I know what is the line width and what is the number of lines ?

How do I know the frame rate?

How do I know what is the number of bits per pixel ?

Hi

The ADC samples in a chirp constitute the line, number of lines are the chirps in the frame.

• Frame sync short packets identify frame boundaries (Frame start and Frame end).
• Line Sync short packets identify the Chirp boundaries.
• 12 bit, 14 bit, 16 bit of ADC data bit width are supported.

Thank you
Cesar

Thanks Cesar,

That information helped.

Hi,

I have a follow-up questions, as my V4L2 driver doesn't receive the CSI data (I can see in the oscilloscope that data arrive to my host).

Assuming my configuration is the following:

- 16 bits of data

- 4 RX channels

- 256 ADC samples

- 128 chirps per frame

- 40ms periodicity

So the video configuration should be:

- Format is 1024x128 (256 samples x 4 channels)

- Each pixel is 4 Bytes (16bits real, 16bits imaginary)

- Line length is 4096 Bytes

- 25 FPS

- Data type is RAW8 ???

Is that correct?

And what about the CP info ? 

Regards,

Ron

Sorry for the delay

The format of the CSI2 packets is provided in the AWR2243 datasheet section 9.4.1

https://www.ti.com/lit/ds/symlink/awr2243.pdf

I think you should try first to get the driver to work with raw data only, no CP data.

Unfortunately we don't have a working example of a v4l2 driver.

Thank you

Cesar

Thank!

Does the Chirp Profile and Chirp Quality always being sent ? Or can I control that ?

If they are always being sent, I need to add them to my CSI line length.

Got it.

Thanks,

Ron.