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SK-AM62-LP: Support Required: Frequency Measurement on SK-AM62-LP

gopal sharma
Intellectual 450 points

Part Number: SK-AM62-LP

Hi Team,

We are using the SK-AM62-LP for development. We have a requirement to measure a frequency range of 1 Hz to 3 kHz on both the MCU and MPU (Linux) sides.

Could you please suggest the appropriate method and recommended pin selection for this implementation.

Regards,
Gopal Sharma

  • +1
    TI__Guru 54828 points

    Hello Gopal Sharma,

    The AM62x device provides ECAP (Enhanced Capture) peripherals that are well-suited for frequency measurement in the 1 Hz to 3 kHz range. The ECAP module operates with a 125 MHz functional clock and captures timestamps on configurable rising/falling edges, allowing accurate frequency and duty cycle calculation.

    The ECAP IP is not available for M4F in the AM62X SOC.

    - For MCU (M4F) requirement: If frequency measurement is required on the M4F core, consider using GPIO edge interrupts with a hardware timer, or implement an IPC-based solution where M4F requests measurement from A53.

    The ECAP IP is available on the MAIN domain A53 core. So, you can check in the Processor SDK whether it is supported or not.

    If this is supported in the Processor SDK, then you can use the ECAP from the Linux side.

    Please let me know if you need any additional details or clarification.

    Regards,

    Anil.

  • 0 in reply to Swargam Anil
    Intellectual 450 points

    Hi Anil,

    Thank you for your support.

    We will review the details of the eCAP module implementation shortly. If TI has any specific documentation available for this module, kindly share it with us.


    Regards,
    Gopal Sharma