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MMWAVEICBOOST: COM port not showing in device manager

Trevor Bishop
Prodigy 10 points
Part Number: MMWAVEICBOOST
Other Parts Discussed in Thread: IWR6843ISK-ODS

Hello,

When I follow these instructions https://www.ti.com/video/6205896562001?keyMatch=MMWAVEICBOOST I get no COM port listed in device manager.

Can someone please assist me in finding out as to why this is not working?

I am using MMWAVEICBOOST with IWR6843ISK-ODS.

  • 0
    Prodigy 10 points

    For a little more context, this is a brand new order, so all I have done is set the dip switches and jumpers, then powered it on. Once powered on I get no COM port listed in device manager.

  • 0 in reply to Trevor Bishop
    TI__Genius 9670 points

    Hello Trevor,

    Please check if the DS3 (NERROUT LED) lights red to see if the xWR device has a HW issue. Additionally, confirm that the SOP signals and power supply are stable before releasing the NRESET. Verify that every power supply are within the recommended specifications for the MMWAVEIC BOOST.

    Please check the below user guide for MMWAVEICBOOST. The Table 2-15 provides the list of LEDs and usage. Kindly check and let me know the status of all LEDs which shall enable us to debug further.

    60GHz mmWave Sensor EVMs (Rev. E) (ti.com)

    Regards
    Ankit

  • 0 in reply to Ankit Mohanty
    Prodigy 10 points

    Hello Ankit,

    Q. Please check if the DS3 (NERROUT LED) lights red to see if the xWR device has a HW issue.

    A. I can see LED DS3 is on.

    Q. Additionally, confirm that the SOP signals and power supply are stable before releasing the NRESET. Verify that every power supply are within the recommended specifications for the MMWAVEIC BOOST.

    A. I am running this of a bench top power supply, I see no issues with the stability of the power source. I can confirm that when the NRST button is pressed the DS3 light turns off and then on when released.

    Q. Please check the below user guide for MMWAVEICBOOST. The Table 2-15 provides the list of LEDs and usage. Kindly check and let me know the status of all LEDs which shall enable us to debug further.

    A. Here is the LED ID and the colour when powered on.

    Reference Colour
    DS1   Yellow
    DS2   Yellow
    DS3  Red
    DS4  Red
    D5  Yellow
    D6  Off
    D7  Yellow
    D8  Red
    D10 Red
    D4 Off
    D9 Off
    D11 Off
    D14 Green
  • 0 in reply to Trevor Bishop
    TI__Genius 9670 points

    Hello Trevor,

    DS3 NERROUT LED glows if there is any HW error in the xWR device. 

    To debug this further, we need to check every supply properly, if it's reaching the device. We should probe all the power supply from the source till the IWR6843ISK-ODS device and ensure that they are within the datasheet specifications. The nReset signal also needs to be checked. If SOP lines are set to the right state. Sometimes if the power supplies are out of spec limits or correct SOP modes are not latched during nReset the device may not boot up. 

    Regards

    Ankit

  • 0 in reply to Ankit Mohanty
    Prodigy 10 points

    Can you advise on the test points I should be checking? Also what voltage I should get at each point you want me to test?

  • 0 in reply to Trevor Bishop
    TI__Genius 9670 points

    Hello Trevor,

    You can probe the decoupling capacitors corresponding to the respective voltages, NRESET and SOP signals. 

    Also, could you please confirm if you followed the procedure listed in section 2.4 of the below user guide.

    60GHz mmWave Sensor EVMs (Rev. E) (ti.com)

    Regards

    Ankit

  • 0 in reply to Ankit Mohanty
    Prodigy 10 points

    It seemed for some reason when in flashing mode no COM port appears, however when I put into 001 (SOP mode 4) = functional mode I now get a COM port. I would think this would work in programming mode as you still need a COM port to flash the device. But for now I can at lest start testing. Thanks for your help.