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AM623: EQEP - Compare Register

Rafael Volkmer
Intellectual 380 points
Part Number: AM623


Tool/software:

HI!

Does each AM623 EQEP modules only provide one compare register? 

There is no way to apply, perhaps a shadow register, that does something similar:

  • 0
    TI__Guru**** 203920 points

    Hello 
    Rafael Volkmer

    Thank you for the query.

    I need to check with the team internally.

    Please expect delay in response given the holiday week.

    Regards,

    Sreenivasa

  • +1 in reply to Kallikuppa Sreenivasa
    TI__Guru**** 203920 points

    Hello Rafael Volkmer

    Pls refer below input i received as a possible suggestion:

    1. It’s not clear to me what the customer’s implementation will be.  All we have is a counter (free running?) and to input signals that need to be time stamped. I could not see a way to do this using the EQEP peripheral

    [The following is a suggestion rather than a tested solution]

    However, It may be possible using two cascaded ECAP peripherals (must be sequential instances)  The sync could be configured so that both counters are reset/loaded at the same time. Signal A could go to the first ECAP and signal B to the second.  The delta between the signals could then be calculated base on the capture timer values multiplied by the timer period.

    Something like this:

    EPWM can be configures in a similar manner

    Regards,

    Sreenivasa

  • 0 in reply to Kallikuppa Sreenivasa
    Intellectual 380 points

    Thanks for the reply! I will test the suggested implementation!