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Original question:

MMWCAS-DSP-EVM: MMWCAS-DSP-EVM object detection issue

MMWCAS-DSP-EVM: Difference between lua scripts for configuring cascade radar

Chennan Xu
Prodigy 95 points
Part Number: MMWCAS-DSP-EVM
Other Parts Discussed in Thread: MMWCAS-RF-EVM

Hi,

I noticed that there are four lua scripts for MMWCAS-RF-EVM  configuration, which are "Cascade_Configuration_Basic.lua", "Cascade_Configuration_MIMO.lua", "Cascade_Configuration_TestSource.lua", "Cascade_Configuration_TXBF.lua".

I only know "Cascade_Configuration_TXBF.lua" and  "Cascade_Configuration_MIMO.lua" are corresponding to the TX beamforming mode and MIMO mode of MMWCAS-RF-EVM,

but I want to ask:

1. What are  "Cascade_Configuration_Basic.lua" and "Cascade_Configuration_TestSource.lua" used for?

2.  If I disable the test source in "Cascade_Configuration_TestSource.lua", can I use it to configure the radar? If yes, will the radar be configured to MIMO mode or TXBF mode?

3. If I want to detect object around 3 meters away from the sensor, which lua script should I use? Using the default chirp parameters in "Cascade_Configuration_MIMO.lua", the max range I calculated is 13.66m and range resolution is 0.0474m, can you please help me to confirm?

Regards,

Chennan

  • 0
    TI__Mastermind 27835 points

    Hi,

    We will need to check this with the team internally. We will get back to you in a couple of days on this. 

    Thanks,

    Pradipta.

  • +1 in reply to Pradipta Bandyopadhyay
    TI__Mastermind 20605 points

    Hi Chennan,

    1. "Cascade_Configuration_Basic.lua" is used for the general configuration that will be required to start the data capture on RF EVM such as RF Init, SOP mode config, FW load etc. The rest of the necessary config can be provided either manullay or using additional .lua commands.
      "Cascade_Configuration_TestSource.lua" is used to configure the front end with a test source. This will embed signals in the ADC data that correspond to the specifics of the test objects which can be used for debugging. Think of it as a object signal generator.
    2. Yes, the script still has the necessary configs required to start chirping. The config is neither a complete MIMO or TxBF as I can see that only one chirp with fixed Tx enable is configured in the frame.
    3. You can use the MIMO lua script, but you will have to change the values of the profile configuration particular to the bandwidth and sampling rate. You can learn more about that here.
      Programming Chirp Parameters in TI Devices

    Regards,

    Kaushik