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TMS320F28379D: Read Encoder pulses

sayali pathak
Expert 1325 points

Part Number: TMS320F28379D

Hello EveryOne,

       I want to read pulses of rotary encoder which is interface with TMS320F28379D controller. I Refer eqep_ex2_pos_speed code from https://dev.ti.com/tirex/explore/node?node=AD4SwgaMeqoQEzFVD8GiEA__gYkahfz__LATEST. I just want to know in code which variable pulses are saved??. or anyone have simple code where only pulses of encoder  are measure??

Thanks

  • 0
    TI__Mastermind 21621 points

    Hi Sayali,

    Can you explain more what you mean by wanting to read the pulses? Do you mean you want to view them? You should be able to hook up channels A and B to a scope and view the waveforms on that. They are not stored in any variables since the pulses are a waveform, not a value

    Regards,

    Peter

  • 0 in reply to Peter Luong
    Expert 1325 points

    Okay.. So, on every high to low trigger pulse I want to increment variable. I have encoder which is 2500 PPR means we got 2500 pulses in 1 rotation. So I just want to know in which variable(in code)  I can get those 2500 count??

  • 0 in reply to sayali pathak
    TI__Mastermind 21621 points

    Hi Sayali,

    There is a DriverLib function denoted as EQEP_getPosition() which returns the current position of the encoder. I think this is what you are interested in. You can use this function and assign it to a variable within the project's interrupt handler and monitor the position through that. Please let me know if this is what you are looking for

    Regards,

    Peter