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DCA1000EVM: Streams output in real time with DCA1000

Nils GODMUSE
Prodigy 100 points
Part Number: DCA1000EVM
Other Parts Discussed in Thread: IWR1443, IWR1642

Hi, 

I have a IWR1642EVM connected to the DCA1000 working for capture a sample of data.
Now I want to have a continus stream of data (raw data and processed one).

Is it possible ? (when I bought the DCA1000 I was thinking it was possible because of the mention of "Streams output in real time through 1-Gbps Ethernet")

And so I'm confused on how to do that. 

Thank you for your help ! 

  

  • 0
    TI__Mastermind 24955 points
    Nils,

    The DCA1000 is used to stream out raw data only. This capture card does not send out processed data over Ethernet. Only the raw ADC data is sent over Ethernet. The raw ADC data is stored as a .bin file once the capture process is completed.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Prodigy 100 points
    Ok good to know,
    So is it possible to have a continus stream of raw data ?
  • 0 in reply to Nils GODMUSE
    TI__Genius 11405 points

    Hi Nils,

    In mmwave studio, by settting number of frames to 0 and you'll get continuous stream.

    Thanks and Regards,

    Michelle

  • 0 in reply to Michelle Liu
    TI__Mastermind 24955 points
    Nils,

    Yes, changing this setting in mmwave Studio will result in the device continuously chirping. But please keep in mind that mmWave Studio will automatically trigger a timeout on the raw data capture process.

    Regards,
    Kyle
  • 0
    Intellectual 430 points
    Hi,
    I am working on the IWR1642/IWR1443 EVMs and I am in the process of procuring a DCA1000 for the raw adc data capture. Meanwhile , is it possible for you to share a sample data for a predefined scenario ? I need few frames to basically do the post processing script for some plots visualization while waiting for the capture card to arrive. Thank you.

    Regards,
    Sheeraz
  • 0 in reply to Sheeraz Ahmed
    TI__Mastermind 24955 points

    Sheeraz,

    Unfortunately, our apps team does not have the bandwidth at this time to provide any sample data. This is a request that would not be typical for this forum. You have previously asked this question on this forum and it has been appropriately addressed.

    Regards,
    Kyle

  • 0 in reply to Kyle Cousino
    Prodigy 100 points

    Kyle Cousino said:
    mmwave Studio will result in the device continuously chirping. But please keep in mind that mmWave Studio will automatically trigger a timeout on the raw data capture process.

    So the DCA1000 will continu to send the raw data through the Ethernet port right ?

    And mmWave Studio trigger this timeout to limit the size of the created file right ? 

    Regards,

    Nils

  • 0 in reply to Nils GODMUSE
    TI__Mastermind 24955 points
    Nils,

    Once mmWave Studio triggers the timeout, the IWR1642 will continue to send and receive chirps. However, this data will not be captured by the DCA1000 and streamed out over Ethernet.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Prodigy 100 points

    Is it possible to avoid to trigger the IWR1642 ? 

    Just have a continus stream over Ethernet ? 

    Nils

  • 0 in reply to Nils GODMUSE
    TI__Mastermind 24955 points
    Nils,

    As I stated in an earlier post, mmWave Studio will automatically trigger a timeout on the data capture stream out process over Ethernet. At this time, continuous streaming over Ethernet is not an available feature.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Prodigy 100 points

    So there is no possibilities to stream output in real time through Ethernet ? 

    Any tricks, or bypass to do that ? 

    Nils

  • 0 in reply to Nils GODMUSE
    TI__Mastermind 24955 points
    Nils,

    With the DCA1000 and mmWave Studio, TI has enabled raw ADC capture of our AWR/IWR devices. You are not capturing post-processed data. Since mmWave Studio is our RF evaluation tool, it was not designed to capture data indefinitely. There are no tricks or ways to bypass this.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Prodigy 100 points
    So I was confuse about the mention "Streams output in real time through 1-Gbps Ethernet" on the DCA1000 page, which let met think that it's was possible...
    Thank you for your answer and your time.
    Regards,
    Nils
  • 0 in reply to Nils GODMUSE
    TI__Mastermind 24955 points
    Nils,

    This description is correct. The DCA1000 enables the mmWave device to stream out raw unprocessed ADC data in real time over the LVDS protocol, a high speed protocol that requires up to a 1 Gbps transfer rate. The DCA1000 then sends out this raw ADC data over 1 Gbps Ethernet which is then captured by the host PC in a .bin file that can be processed using MATLAB.

    Regards,
    Kyle