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Original question:

CCS/IWR6843ISK: IWR6843ISK GPIO control

IWR6843ISK-ODS: GPIO control using gestures

Purvi Mehndiratta
Prodigy 60 points
Part Number: IWR6843ISK-ODS
Other Parts Discussed in Thread: MMWAVEICBOOST,

Hi,

I need to control a GPIO (toggle an LED) using gestures on the IWR6843ISK-ODS and MMWAVEICBOOST. I want to modify the Gesture with Machine Learning demo code to control a GPIO. 

What are the GPIOs that are available and how should I go about modifying the demo code? 

Regards,

Purvi

  • 0
    TI__Mastermind 21211 points

    Hi Purvi, 

    If you have not already, I recommend taking a look at the GPIO driver documentation ({MMWAVE_SDK_3.x}/packages/ti/drivers/gpio/docs/doxygen/html/index.html). You can also reference the test code as an example ({MMWAVE_SDK_3.x}\packages\ti\drivers\gpio\test\xwr68xx). GPIO[2] (RADAR_GPIO_2) should be available for controlling LED. Please see the schematic. 

    Best Regards, 

    Josh

  • 0
    Prodigy 60 points

    Hi Josh,

    Where are the gestures being read so I can condition them to toggle the GPIO? GPIO_2 turns on as soon as the sensor starts sensing.

    Regards,

    Purvi

  • +1 in reply to Purvi Mehndiratta
    TI__Mastermind 21211 points

    Hi Purvi, 

    In main.c, within MmwDemo_DPC_ObjectDetection_dpmTask() you can see a function call to FindGesture(). This function processes the raw probabilities for each class (gesture) output by the neural network. You could modify this function to toggle the GPIO or you could add the functionality somewhere else, after this function has been run. The current gesture detected for that frame is stored in the global variable gfeatures (gfeatures.currFramegesture). 

    Best Regards, 

    Josh

  • 0 in reply to Josh Dye
    Prodigy 60 points

    Thank you Josh! It is working.