IWR1843BOOST: Is it possible to use LVDS to collect raw data and point cloud data simultaneously?

Jarry Fan

Part Number: IWR1843BOOST
Other Parts Discussed in Thread: DCA1000EVM,

Tool/software:

Hi,

I can use the UART on the IWR1843BOOST to acquire point cloud data, or use the DCA1000EVM to acquire raw data through LVDS.

Currently, I want to use LVDS to simultaneously acquire raw data and point cloud data processed by the DSP. Is this possible? Are there any relevant reference codes or information available?

Thank you very much!

Best regards,

Jarry

over 1 year ago

0 Pedrhom Nafisi over 1 year ago

TI__Mastermind 22577 points

Hello Jarry,

Unfortunately it is impossible to both export processed point cloud data and raw data simultaneously with the DCA1000 and any mmWave sensor. This is largely due to the immense amount of data streaming speed and power that is required to do raw data streaming alone, needing a 5V 3A supply for power and Ethernet cable to support the speed.

Best Regards,

Pedrhom

0 Jarry Fan over 1 year ago in reply to Pedrhom Nafisi

Prodigy 30 points

Hi, Pedrhom,

Thank you very much for your reply.

I still have some questions,

1）Whether I can get the HW data stream (or raw adc data) first and then the SW data stream (point cloud data) during the frame cycle, as illustrated in the figure.

2）Can I get the raw data via Ethernet cable and the point cloud data via UART, at the same time?

Best regards,

Jarry

0 Pedrhom Nafisi over 1 year ago in reply to Jarry Fan

TI__Mastermind 22577 points

Hello Jarry,

You are able to do that as you have pointed out, however support for this is very limited and you will need to do development on your end. You will also be limited in that it is only supported by the out of box demo.

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1168089/dca1000evm-export-point-cloud-from-pre-recorded-raw-data-in-mmwave-studio

I will additionally add that if you want to do raw data processing of your own to generate a point cloud, and compare it to the point cloud that comes in from the DSP, there will always be some variation to it even if the processing chains are identical. This is due to the differences seen in theoretical vs real when you add in the hardware portions.

Best Regards,

Pedrhom

0 Jarry Fan over 1 year ago in reply to Pedrhom Nafisi

Prodigy 30 points

Hi, Pedrhom

Thank you for your reply.

I wrote a script that tries to get the raw data over the Ethernet cable and the point cloud over the UART at the same time. It successfully captures both raw data and point cloud data concurrently.

Best Regards,

Jarry

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IWR1843BOOST: Is it possible to use LVDS to collect raw data and point cloud data simultaneously?