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EVM430-FR6043: MSP low-power microcontroller forum

Thibaut Chailloux
Prodigy 20 points
Part Number: EVM430-FR6043
Other Parts Discussed in Thread: EVM430-FR6047, TMUX1109, TIDA-01486

Hello,

I am currently testing a single-path flowmeter application based on EVM430-FR6043 with some success and now I would like to test a dual-path configuration.

I'm aware of the solution proposed on https://www.ti.com/tool/TIDA-01486 for EVM430-FR6047, and I could adapt this design to EVM430-FR6043 and I suppose it should work. [Correct me if I'm wrong]

But first I would like to test the dual-path without hardware design (no pb for software design), so I'm considering using two EVM430-FR6043 to easily drive two pairs of transducer and use communication to synchronize and get data.

My first question is : 

  • Is it possible, or did I miss something ?
  • What would be the easiest way / communication to synchonize and make the calculation of the flow ? 

Best regards,

  • 0
    TI__Expert 6635 points

    Hi Thibaut,

    I am reaching out to our experts to get some more insight on this approach. We will provide an update for you soon.

    Thanks,

    Mitch

  • 0
    TI__Mastermind 44220 points

    Hello Thibaut,

    Yes, a multiplexer based solution as shown in TIDA-01486 could be used to implement a multi pair system.  We have also done some testing with the TMUX1109/1209 which simplifies the solution if you do not require the extra amplification in TIDA-01486.  We did not see any degradation to the signal going through this mux.  If you are interested in this, let me know and I can send some preliminary information.     

    In regards to using two EVMs, this could also be possible.  We have not tested this type of solution though.  One EVM would need to act as the master and data aggregator.  J7 and J8 on the EVM offers SPI, I2C, and UART interface options that you could use to communicate data to the master and synchronize the excitation of the transducers. 

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