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ADS1293EVM: Access ADS1293 with external MCU...

Scott Kolek
Prodigy 30 points
Part Number: ADS1293EVM
Other Parts Discussed in Thread: ADS1293

I've poured through all the topics I could find on this board, and see many conflicting answers...

I am looking for the least invasive method to access the ADS1293 using an external MCU.

I've seen answers involving removing resistors. That is too invasive as if I wanted to use the attached MCU, resoldering is involved.

I've seen answers about using battery power to JP1 and jumper configurations. I'd still like to use a USB connection to power the EVM board, if possible.

I've also seen answers about just erasing the installed MCU so the installed MCU does not connect to / attach to the ADS1293.

So, bottom line, which is the easiest method to access the ADS1293, via an external MCU and the J2 connector. I would really prefer not to do any soldering / desoldering to ruin the board / void any warranty.

Thank you,

Scott

  • 0
    TI__Mastermind 19815 points

    Hi,

    What you have been seeing and reading are correct. It's not possible to communicate with the ADS1293 on the EVM with external MCU without doing desoldering/soldering.

    Think about it, without removing the the proper circuit path(i.e. remove resistors to open some circuits), there will cause power and communication conflicts among two different MCUs and the ADS1293.

    That is very normally what developers/designers will do when develop a product.

    Have you read through the datasheet and tried the EVM itself with GUI and user guide already to get understand and familiar with the device?

    If not yet, it's highly recommended to do so before altering anything.

    Thanks 

  • 0 in reply to ChienChun Yang
    Prodigy 30 points

    Thank you for the answer, however, there is still not a clear solution here... If you refer to this post, one could access the ADS1293 without the need for desoldering/soldering, so is this post correct as well?

    e2e.ti.com/.../ads1293emv-cc2540dk-spi-communication-disable-msp430

  • 0 in reply to Scott Kolek
    TI__Mastermind 19815 points

    Hi,

    If you want to bypass the MCU on the EVM board, you will have to 

    take a look and study

    EVM user guide page 2, 10 and 12 and remove the necessary resistor(s) and/or jumper(s) between the MSP430 and ADS1293 to avoid conflicts. and then remove the power to MSP430.

    Thanks