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IWR6843ISK: Serial port ack

Gerald
Genius 9570 points
Part Number: IWR6843ISK

Hi Team,

May I ask for help? Below is the summary of our customer concern:

"I have IWR6843ISK and I am using your python visualize code from the industrial tool box mmwave_industrial_toolbox_4_7_0\labs\people_counting\visualizer\oob_parser.py to communicate with the radar. However, I find that sometimes the code will fail to communicate with the radar. Specifically, when I call sendCfg(), the radar returns an acknowledgement "ack" of 0 byte. Thereafter if I try to read from the data port (by calling readAndParseUart() ) the radar returns no data. This usually happens after sending the configuration to the radar several times. I find that if I do a power reset by pressing the physical reset button on the radar board, the radar will be able to communicate again.
1. Why is the radar returning 0 byte in ack and stop returning data?
2. Is it possible to reset the radar by software instead of pressing the physical reset button?"

I hope you can help us. Thank you so much.

Kind regards,

Gerald 

  • 0
    TI__Mastermind 23725 points

    Hello

    Can you please confirm the behavior of  right ack back via  console method  instead of using the  py gui.

    Thank you,

    Vaibhav

  • 0 in reply to Vaibhav Mahimkar
    TI__Genius 14415 points

    Hello Gerald,

    Can you also please confirm that the customer is using the 3D people counting lab? If so there are 2 possible issues.

    The first is that the GUI is not really set up to be connected and disconnected while still running. If you are trying to re-load a cfg file through the python visualizer, it may configure the graphical output incorrectly, and may also not connect properly to the sensor. If the use case requires that the cfg file be sent multiple times without restarting the sensor, I suggest some additional checks and features be added to the GUI to support this operation (disconnecting from UART, resetting the sensor, etc)

    The second reason is that with the 3D people counting labs, sensorStop and restart is not fully supported. You will need to issue a reset. Please see the following post.
    https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/883668/ccs-iwr6843-soft-reset-dss

    Regards,

    Jackson