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gmane.comp.hardware.texas-instruments.msp430.discuss |
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Infinite Factors |
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<[email protected]> |
On Fri, 18 Sep 2015 14:56:33 -0500, you wrote:
> I think your argument in using only the figure on page 9-24
> of SLAA024 is flawed in that the figure does not account for
> Constant Generator use for the 6 (from memory?) constants
> unless the reader makes the conversion to register mode for
> them.
I completely took your first post's point on this issue, as
well. It makes sense, too. Just as you say. I take your point
above, once again.
> Now we could go back and forth on this for a long
> time,
I really didn't want to belabor things. I just wanted to
tweek your thinking so that you'd do an experiment. The
documentation wasn't outright explicit about it, as I read
through it.
> so I just programmed a second xor.b #0x1,&P1OUT to
> immediately follow the first. The resulting pulse is 4
> cycles long. And, just to be complete I changed the two
> xors to xor.b #0x11,&P1OUT. This pulse is 5 cycles long.
Perfect!
><snip>
> Curiouser and curiouser: If I just comment out the clearing
> of the low power modes within the ISR, I count a burst of 12
> cycles but the 8 cycles for LPM3 Interrupt Acceptance and 5
> for RETI says the burst should be 13.
><snip>
Interesting. I really enjoy seeing the detailed work going on
here and will be very interested in how things resolve as you
work through it. I do similar kinds of tests (often to the
despair of those who would prefer I just accept "handwaving"
and call it "close enough for horseshoes"), so I really like
seeing when someone else is just as anal about the details as
I prefer. Will be watching, so please do update when you have
more information on this.
Jon
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Posted by: Jon Kirwan <[email protected]>
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