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Original question:

ADS1220EVM: ADS1220emv MCU firmware

ADS1220EVM: Windows 10 driver to run ADS1220 EVM board

Priyanka Jantre1
Prodigy 50 points
Part Number: ADS1220EVM
Other Parts Discussed in Thread: ADS1220, ADCPRO,

Hello,

I have successfully installed ADCPRO software and received my ADS1220 EVM board which lights up when connected to laptop USB. However the PC cannot detect it so I need drivers for windows 10.

Also how do I get ADS1220 EVM plug in? is it similar to ADC pro samples or different.

Please help.

Thank you,

Priyanka

  • 0
    TI__Guru** 113765 points

    Hi Priyanka,

    Welcome to the E2E forum! The driver is a part of the ADS1220EVM plugin software for ADCPro.  The plugin is available for download on the ADS1220EVM tools page and it is marked under the Order Now section as ADS1220EVM-SW.  Press the download button to get the plugin.

    Best regards,

    Bob B

  • 0 in reply to Bob Benjamin
    Prodigy 50 points

    Hi Bob,

    Thank you for your support. Does the ADS1220EVM needs to programmed after it is detected by ADC Pro? Or is it already programmed to read the Analog signal connected at J1 or J2 connector.

    How do I confirm the readings coming out after pressing Acquire button are correct as they are in microvolt. Is there any additional step to be taken before we start capturing data.

    Please let me know.

    Thank you,

    Priyanka

  • 0 in reply to Priyanka Jantre1
    TI__Guru** 113765 points

    Hi Priyanka,

    There is a default startup configuration for the EVM.  Depending on what analog inputs you plan to use, the reference voltage, etc. you will need to configure the ADS1220.  You can see the configuration options in the ADS1220 datasheet and details on how to make the various configuration settings by following the ADS1220EVM user's guide.

    When collecting data, you can view as number of codes instead of volts from the time domain plot.  There is also a test plugin (Data Monitor) that shows just the codes from the data collected.  I would recommend looking at the ADCPro user's guide.

    https://www.ti.com/lit/ug/sbau128c/sbau128c.pdf#page=14

    Best regards,

    Bob B

  • 0 in reply to Bob Benjamin
    Prodigy 50 points

    Thank you Bob. My current issue is I want to use ADS1220 Eval board for temperature measurement using T type thermocouple and I am not sure if I need any additional hardware or software to be installed on the board to make it work?

    Initially I just connected the thermocouple wires at J2 connector at AIN0 and AIN1 but it gave me some microvolt reading which didnot seem to match the room temperature.

    So do you have any recommendations on how I can make it work or if I need to have any additional step to make it work?

    Appreciate your support!!

    Best Regards,

    Priyanka

     

  • 0 in reply to Priyanka Jantre1
    TI__Guru** 113765 points

    Hi Priyanka,

    Most likely you will not match the room temperature as you will need to make the correction for the cold-junction.  I would highly recommend reviewing the information in A Basic Guide to Thermocouple Measurements.

    If you look at the ADS1220EVM user's guide you will see a discussion in section 5.2.4 where J3 is used as the TC input (AIN1 and AIN2).  This circuitry is on the bottom-side of the EVM.  R1 and R2 are used as biasing resistors, so you would need to add these resistors (1 to 10M) to provide the correct input range for the measurement to take place.  This will be required if you intend to use any gain or enable the PGA.  Note that J2 has AIN1 and AIN2 as input options.

    The user's guide discusses how the cold-junction can be measured using an RTD.  To get you close you could use the internal temperature sensor of the ADS1220 instead.  You will need to convert the temperature to uV for the T type to properly compensate for the cold-junction.

    Best regards,

    Bob B