IWR6843ISK-ODS: Problem with sending config in 3d people counting

Hi,

Thank you for reaching out.

Are you using the latest 3D people counting Visualizer GUI located in  <mmw_industrial_toolbox_install_location>\labs\people_counting\visualizer?

Usually if there are blank lines and the configuration commands are not being sent, that means you did not press the reset button before you connected to the EVM with the visualizer. 

Follow these steps to run the 3D People Counting Visualizer and correctly connect with the EVM

1. Start with the EVM unplugged from the computer and then power up and connect the EVM to computer

2. Press the reset button and ensure the led flashes before doing anything else

3. Open the Visualizer GUI

4. Connect to the EVM in the Visualizer GUI and then send the configuration

If you have already connected the EVM to the Visualizer and something doesn't work and you attempt to relaunch the Visualizer without resetting the EVM, you will get the above behavior where it does not correctly send the configuration commands and does nothing. 

In terms of the DS2 light, I am not sure what you mean by DS2 as that is not a number associated to any LED on the board. You can check the schematics and assembly drawings of the specific IWR6843ISK-ODS revision board that you have here. https://www.ti.com/lit/zip/swrr165 

Hope this helps.

Thanks,

Alex Chan

Hi,

Thanks for your replying.

This is the LED I talked above.

I have followed the steps you talked about and it works. But after a couple of times, the LED in the picture can not be closed after I press the reset button with the EVM unplugged from the computer. Once the LED turns on, it will cause configuration commands not being sent even I follow the steps you talked.

There are three questions :

1. Is the LED in the picture should be turned off after pressing the reset button?

2. If so, how to turn this LED off without pressing reset button or recycling power (I have tried these two steps many times)?

3. what is the meaning when this LED turns on?

Hi Chien,

Please see the following responses to your questions.

The meaning of DS2 Yellow LED is for observing GPIO_2. Glows when the GPIO_2 is logic 1. You can see all LED use cases in the user guide on page 28 for the mmWave IC Boost Carrier Board here. https://www.ti.com/lit/ug/swru546d/swru546d.pdf?ts=1638457973182&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FMMWAVEICBOOST

The DS2 LED should start in the off state on power up. When you press the reset button on the IC Boost Board it should briefly flash and then go back to the off state. Once you have connected the EVM to the Visualizer and pressed the send configuration button, the DS2 LED will turn on and the Visualizer GUI should start running. It will start blinking rapidly when a target has been tracked. If there are no more tracks, the DS2 LED will stay constant on and will no longer be blinking. Even if you close the Visualizer GUI, the EVM can still run and detect or track people and thus the DS2 LED may still be on or blinking. 

Are you using the following Visualizer GUI?

If you press the reset button while the Visualizer GUI is running it will mess up and you will need to reopen and reconnect the Visualizer GUI. Make sure to again reset the EVM before connecting to the Visualizer GUI. 

Hope this helps. 

Thanks,

Alex Chan

Hi, Chan

Thanks for your replying.

As you said,  "The DS2 LED should start in the off state on power up. When you press the reset button on the IC Boost Board it should briefly flash and then go back to the off state."

Now, my problem is that my IC boost Board start in "on state" when power up,and after I pressed the reset button, the DS2 LED would not turned off.

Besides,  I am using the same visualizer GUI as you do.

here are the photos that I'm pressing the reset button with the EVM unplugged from the computer.

1. power up with EVM unplugged from the computer

2. pressing the reset button

33. After that, DS2 LED still in the "on state"