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AWR1843BOOST: Continuous data stream over LVDS

Maximilian Rentschler
Prodigy 140 points
Part Number: AWR1843BOOST
Other Parts Discussed in Thread: DCA1000EVM

Hi,

I am currently working with your AWR1843BOOST and DCA1000EVM Capture card.

I already successfully configured the AWR1843BOOST with the mmWave Demo Visualizer and the mmWaveStudio and received data both over ethernet and usb. Yet I couldnt find the option I need for our purposes.
For our implementation it is necessary to have the AWR1843BOOST stream constantly Data over the LVDS after connecting it to power and without the DCA1000EVM connected to it.
I used the "xwr18xx_mmw_demo.bin" which is located in the mmwave_sdk. Unfortunately the LVDS isnt active in this demo.
Is there a way to implement this functionality?

Thank you

Max

  • 0
    TI__Guru 69660 points

    Hi,

    For continuous streaming, you need to use mmWaveStudio only with DCA1000EVM.

    mmw demo supports LVDS streaming mode but not continuous mode.

    CLI command: 'lvdsStreamCfg -1 1 1 1'

    Regards,

    Jitendra

  • 0 in reply to Jitendra Gupta
    Prodigy 140 points

    Hi,

    I also used the mmWaveStudio but cant find the continious streaming mode. How do I enable it?

    However I can see valid data when triggering single frames in mmWaveStudio.

    I already activated the lvdsStreamCfg like you mentioned but I cant get a lvds signal when monitoring the lvds channel on the 60Pin connector.

    When is the data sent over lvds when using mmWaveDemo Visualizer?

    Thanks a lot

    Max

  • 0 in reply to Maximilian Rentschler
    TI__Mastermind 24955 points

    Max,

    LVDS streaming on the Out-of-Box demo is enabled in the latest release of the SDK, version 3.2 which you can find here: http://software-dl.ti.com/ra-processors/esd/MMWAVE-SDK/latest/index_FDS.html

    You can enable LVDS streaming by modifying the CLI input file and adding the CLI command the Jiten posted in the initial reply.

    To understand the timing of LVDS transfers, please refer to the timing diagram below, which can also be found in the SDK Doxygen for the Out-of-Box Demo: 

    The AWR1843BOOST can stream LVDS data without having the DCA1000EVM connected to the device. However, the DCA1000EVM is used to capture the LVDS data and stream it over Ethernet onto your PC. You can have this transmission start only after the device receives a "sensorStart" command as there is no data to stream out prior to this step.

    Regards,

    Kyle