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CLA LVF interrupt

Mauro Fantina
Genius 3800 points


Hello,

I'm using CLA type 1

I read there is LVF flag (latched oVerflow flag)

and main CPU can service LVF with appropriate ISR.

If CLA goes to LVF and CPU service interrupt,

is there a way to restore LVF to zero and service new LVF interrupt ??

  • 0
    TI__Guru* 81500 points

    Mauro,

    The CLA should be able to clear this bit, as it is R/W according to the CLA UG.  The following from the UG, but if you are programming in C you should just be able to clear the bit 0 in the MSTF register.  It is not EALLOW protected.

    Latched Overflow Flag
    The following instructions will set this flag to 1 if an overflow occurs: MMPYF32, MADDF32, MSUBF32,
    MMACF32, MEINVF32, MEISQRTF32
    The MSETFLG and MMOV32 MSTF, mem32 instructions can also be used to modify this flag.

    Matt

  • 0 in reply to MatthewPate
    Genius 3800 points

    I've tried,

    it works correctly,

    thankyou very much