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TMS320F280049: Trip one-shot flag and clear

Wayne Huang
Genius 16705 points
Part Number: TMS320F280049


Dear Champs,

I am asking this for our customer.

If the user uses 

CMPSS1->PWM1 DCAEVT1.force->TZOSTFLG.DCAEVT1 and TZFLG.OST

Questions:

1. TZOSTFLG.DCAEVT1 is the source of TZFLGTZFLG.OST. Is it right?

2. When we clear the flags manually, we should clear them both, that is, by both TZOSTCLR.DCAEVT1 and TZCLR.OST? Is it right?

3. The order to clear them should be TZOSTCLR.DCAEVT1 first then TZCLR.OST if TZOSTFLG.DCAEVT1 is the source of TZFLG.OST. Is it right?

Wayne Huang

  • 0
    TI__Mastermind 28275 points

    Hi Wayne,

    I need to confirm this and will provide you a response tomorrow.

  • +1 in reply to Frank Ankapong
    TI__Guru 52040 points
    Wayne Huang said:

    1. TZOSTFLG.DCAEVT1 is the source of TZFLGTZFLG.OST. Is it right?

    2. When we clear the flags manually, we should clear them both, that is, by both TZOSTCLR.DCAEVT1 and TZCLR.OST? Is it right?

    3. The order to clear them should be TZOSTCLR.DCAEVT1 first then TZCLR.OST if TZOSTFLG.DCAEVT1 is the source of TZFLG.OST. Is it right?

    1. If that is the only OST event enabled.

    2. Clear the flags only after the condition has been removed from DCAEVT1. (check the signal to make sure it is no longer valid)

    3. Yes clear both. But also remember that in the TZFLG the DCAEVT flag will also be set alongside OST flag.