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Original question:

AWR2243: AWR2243 Cascade Data Capture

AWR2243: Cascade Data Valid Signal

robert hoff
Intellectual 390 points
Part Number: AWR2243

Hello,

We are trying to capture data from the AWR2243 Cascade board over LVDS instead of the default CSI interface.  We have the data lines hooked up to an external FPGA board, but are still using the stock TI board and LUA scripts for setup.  Once we have the board set up, we change the data mode to LVDS using the GUI.

We are not seeing the Data Valid line toggle.  We ran the same test with the AWR2243Boost board, and were able to use the Data Valid line as a trigger for data capture.  Is there a reason that the cascade system when in LVDS mode would not trigger this Data Valid line?  Is there another signal we can configure to trigger data capture?

Thanks,

Rob

  • 0
    TI__Mastermind 18500 points

    Hi Robert,

     

    For options like the LVDS/CSI2 lane configuration, I believe these can only be configured once without a device reset. At least that is my experience with the lua API/mmWave Studio and these options. In my normal usage of our single-device and cascaded EVM, I typically limit reconfiguration or looping of parameters only to the SensorConfig tab options (chirp profiles, chirp configs, frame config).

     

    I would also recommend modifying the setup script to select the exact options you need. The lines to modify for the ADC datapath are below.

     

     

    There are a few general ways we typically use in mmWave Studio to figure out the exact API options we want when setting up a new script:

     

    1. The lua API generally follows the actual AWRx ICD SPI API command set – so usually the functions and commands are similar
    2. You can look-up the full lua API parameter set from within mmWave Studio by using the Lua Shell and typing help and then the command. For example:

     

     

    1. You can also use the GUI selection and then read off the Output log window to find the function and parameters you need. For example clicking the Set button in the Data Path Configuration pane of the DataConfig tab results in the following API command being executed.

     

     

     

     

    Please let me know if that helps.