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TMS320F280049C: Is it possible to update Counter Match1 via HLC instead of CPU when using CLB

Julia Li
Expert 3870 points
Part Number: TMS320F280049C

Hi Champs,

Is it possible to trigger HLC execution via PWM to update Match1 in Counter?

1. Update the counter match1 value at the ZERO position of the PWM



2. HLC is triggered by an event

Thanks!

Best Regards,

Julia

  • 0
    TI__Genius 14171 points

    Hi Julia,

    Thanks for reaching out on E2E forums. For triggering the HLC, this can easily be done if you have extra CLB inputs available. You can assign the TBPRD = Zero signal from the EPWM as an input into the CLB, and then the corresponding CLB BOUNDARY input can be used to signal to the HLC to update the counter value. 

    Regarding the data that will be used to update the counter, you have the option of preloading your data into the HLC registers or making use of the SPI FIFO for data exchange

    Regards,

    Peter