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IWR6843ISK

Alex Prokofev
Prodigy 130 points
Other Parts Discussed in Thread: MMWAVEICBOOST, IWR6843ISK

Hello everyone!
We have IWR6843ISK rev B board and MWAVEICBOOST board. Together it works. But we want to use the radar separately by transmitting data via ESP32. After reviewing the documentation and schematics, we added a pair of pull-up resistors to where they are installed on the MWAVEICBOOST board. Brought UART for data transmission and UART for configuration. But the radar doesn't respond to commands. At the same time, it starts to react if we connect MMWAVEICBOOST. What did you miss when connecting?

  • 0
    TI__Mastermind 23725 points

    Hello

    Can you please confirm that the setup works with mmWaveicboost and equivalent needs to be replicated without that board.

    Please highlight the pins on which you have pull up added.

    Thank you,

    Vaibhav

  • 0
    TI__Mastermind 33805 points

    Hi,

    Are you showing from the block diagram that SOP0 Pin is pulled up to 1.2V and NRESET pulled to 3.3V? 

    What you are trying to do will be easier to achieve on the Rev D version of IWR6843ISK since its designed for standalone use. However on this board you need to 

    1. find a way to pulling the SOP0 to 3V3 and SOP 1, SOP2  to ground.
    2. Nreset needs to be connected to and RC circuit to ensure the SOP line and other lines are in steady state before reset crosses 1V5, see power on sequence in data sheet
    3. if you are trying to power the board with the 3V3 line from the ESP32, you need to ensure its capable of delivering 3A needed, see datasheet for typical power consumption

    Since the REV D board is designed for standalone all you would need to do is connect the UART lines to ESP32 and configure the onboard switch to route the UART to the 60 pin. I highly recommended upgrading to the REV D version available online.

    Regards,

    Charles O

  • 0 in reply to Charles Oladimeji
    Prodigy 130 points

    Yes!
    Thanks you very much! In case someone suddenly needs to connect the IWR6843ISK rev.B

    It works