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ADS8668EVM-PDK: Is it possible to connect evm with rasberry pi

Noel Johney
Prodigy 60 points

Part Number: ADS8668EVM-PDK

need to talk to ads8668 from raspberry pi over spi. Need help regarding what changes has to be made on evm to use external processor.

Any help is appreciated.

  • 0
    TI__Mastermind 25020 points

    Hello,

    Are you using the EVM, or are you using your own PCB?
    The EVM User's Guide will be helpful to look at to see how to connect the device. there is a schematic near the end of the document.

    The digital pins on the device need to be driven by the processor, this includes
    CS, SCLK, SDO, SDI. It is useful to use an oscilloscope to verify the digital communications are in fact what are expected from the firmware
    The datasheet timing diagram will be helpful here for comparisons

    Be sure to  pull pin2 RST high, or else the device will be hardwired to power down mode.

    Regards

    Cynthia

  • 0 in reply to Cynthia
    Prodigy 60 points

    Thank you Cynthia.

    It is ads8668 evm.

    I wasn't sure if it is possible to communicate adc evm with raspberry pi when it is connected to computer.

    I think you answered it is possible.

  • 0 in reply to Noel Johney
    TI__Mastermind 25020 points

    No, it is not possible to connect the EVM to the communications and connect to the GUI and connect it to the raspberry pi

    If you want to use the Raspberry pi, you will need to ONLY use the raspberry pi and create your own software.

    It is one or the other, the communication card that came with the EVM and the GUI OR the raspberry pi

    Regards

    Cynthia

  • 0 in reply to Cynthia
    Prodigy 60 points

    Thanks Cynthia.