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Can I evaluate two opt3001evm in one LabView SW?

Anatoly Sharapov
Prodigy 60 points
Other Parts Discussed in Thread: OPT3001, OPT3001EVM

Hi, everybody!

In my microcontroller app I need to use two opt3001. Obviously in order to evaluate my app at PC I need two opt3001evm connected and processed by one LabView software simultaneously. Is it possible to implement, and if it is - how?

Regards, Anatoly.

  • TI__Prodigy 370 points

    Hi Anatoly,

    I would need to dig deeper if we can plug 2 SM-USB-DIG modules into one computer at once, and have independent communication to each of them.   There may be a way.

    However, I might suggest an alternate approach, let me know if this thought leads to you a useful path:

    OPT3001 has 4 possible I2C addresses, which you can set on the device card with a simple soldering+wire operation .   You can put these all on the same I2C bus, coming off of one SM-USB-DIB.  The device card has a provision to add a 5 pin header that would allow the interconnect on each of your 2 device cards.

    This would eliminate the need to untangle multiple USB connections, and the addressing can be done at the I2C command level.

    I can go into more detail if that is helpful.   Let me know your reaction.

    Thanks

    James

  • in reply to James Becker
    Prodigy 60 points

    Hi, James!

    The solution, proposed by you, seems to be quite feasible (I even dare to say more acceptable).
    I've added required code to original project, so now I'm quite content with it.
    Thank you again for the idea.

    Regards, Anatoly.