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TMS570LS1115: Implementing a frequency counter

Pradeepa Senanayake
Intellectual 715 points
Part Number: TMS570LS1115

Hello,

I want to implement a frequency counter in my processor. I decided to use the eCAP module for this. However, I also notices that there is an application note related to input capture which uses HET driver.

I'd like to know the difference between two approaches to understand which method is better.

Thanks!

  • 0
    TI__Guru**** 196286 points
    Hello,

    The NHET is an advanced intelligent timer. This timer is software-controlled co-processor, using a reduced instruction set, with a specialized timer micromachine and an attached I/O port. A High-End Timer Transfer Unit (HTU, acts as DMA) can transfer NHET data to or from main memory. NHET is very flexible, can be used for PWM, catpure, UART, I2C, SPI etc.

    eCAP is designed to be used for capture (actully it can also output PWM). It is easier to use.