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Original question:

IWR6843ISK: How to set up WIFI communication between mmwave sensor and PC

IWR6843ISK: How to physically connect to the WiFi module?

Jiaqi Xie
Prodigy 130 points
Part Number: IWR6843ISK
Other Parts Discussed in Thread: MMWAVEICBOOST

Hi,

I asked the wireless setup for 6843ISK previously but no ICBOOST, then I bought one. So I would like to continue the question. 

The 6843ISK connects to MMWAVEICBOOST via 60Pin HD J4, and then I lost.

I would like to configure as hard-code people counting demo and transmit the data through wireless to PC via WIFI module (no embedded computer).

There are some questions:

1. The 6843ISK has been configured as hard-code. What kind of mode should I set up when I connect to ICBOOST and ISK will automatically start the sensor?

2. "connect the UART to the 40 pin header" How can I physically connect the wifi module to 40 pin header after I set the S1 as follow:

Looking forward to your reply.

Thank you.

Best Regards,

Jiaqi

  • 0
    TI__Expert 7510 points

    Hello,

    Are you trying to get processed data e.g. point cloud to the PC via WiFi? Is my understanding correct?

    The 6843ISK has been configured as hard-code. What kind of mode should I set up when I connect to ICBOOST and ISK will automatically start the sensor?

    [CD] >> If you want the device to start automatically once power is applied and you do not want to change the configuration of the device then I would refer to the following FAQ post:

    https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1023135/faq-iwr6843-how-to-add-a-hard-coded-configuration-to-mmwave-radar-projects

     "connect the UART to the 40 pin header" How can I physically connect the wifi module to 40 pin header after I set the S1 as follow:

    [CD] >> The 40 pin header is on the underside of the ICBOOST. You will need to connect that LP compatible headers to that of your Wifi LP to form the connection. The switch settings that are described above make sure that the UART signals are routed to the 40pin header and thus to your WiFi LP.

    Best regards,

    Connor Desmond

  • 0 in reply to Connor Desmond
    Prodigy 130 points

    Hi Connor,

    Thanks for your reply.

    Yes, I am trying to get the point cloud to the PC via WIFI. In fact, my final goal: mmw sensor only connects with 5V power supply then transmits the point cloud data to PC via WIFI without connect ICBOOST.

    The hard-coded configuration to mmwave sensor is done without any configuration change. The ICBOOST and mmw sensor set up is shown in the picture.

    1. Do you mean LP compatible headers is J5 or the yellow rectangle that I draw in the ICBOOST?

    If LP header is J5, there is no voltage output between J5.4 and J5.1. Then I assume no data will come out from J5.5. 

    If LP header is yellow rectangle area, how can I know which hole is tx signal from IR device?

    2. Moreover, do i still need to use the usb wire to connect the ICBOOST from PC when the mmw sensor already set as hardcoded?

    3. Is it possible that I can modify the mmw sensor that point cloud data output from 60 pin HD connector?

    Best Regards,

    Jiaqi

  • 0 in reply to Jiaqi Xie
    TI__Expert 7510 points

    Hello,

    1. The J5 and J6 40 pin headers are where the UART signals will be routed. I would look the schematic for the ICBOOST to know which header sockets you should connect to your wifi launch pad.

    2. If you have a hard coded configuration modification combined with routing the signals to the 40 pin connectors then you will not need to connect the USB cable to the PC.

    3. No.

    Best regards,

    Connor Desmond

  • 0 in reply to Connor Desmond
    Prodigy 130 points

    Hi Connor,

    I tried to connect J5.3 or J5.4 and the GND, still nothing come up. 

    May I know the reason for No.3? Since I check the schematic of 6843ISK and ICBOOST, the CONN_RS232 transmit the data directly to ICBOOST, then the Rx/Tx signal would arrive at 40Pin LP/BP header finally. 

     IWR6843ISK_verD

    Best Regards,

    Jiaqi

  • 0 in reply to Jiaqi Xie
    TI__Expert 7510 points

    Hello,

    I will have a more robust response tomorrow.

    Best regards,

    Connor

  • +1 in reply to Connor Desmond
    TI__Expert 7510 points

    Hello,

    The following mux pin positions:

    >> S1.5 - OFF

    >>S1.7 - OFF

    >>S1.8 - ON

    According to the schematic this should route the UART signals to the 40 pin LP connectors.

    Best regards,

    Connor Desmond

  • +1 in reply to Connor Desmond
    Prodigy 130 points

    Hi,

    The setup of mux pin is correct. I figured out that I connected to the wrong pin(J5.3 or J5.4) to get the data.

    The point cloud data can be caught from J6.9, then connected to the RX pin of ESP8266.

    Thanks a lot.

    Best regards,

    Jiaqi