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Forum Index : Microcontroller and PC projects : Armite L4 counting

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TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 6353
Posted: 06:54am 16 Mar 2019
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Nucleo STM32L432

I am seeing double when I try to use both counting pins.
Whichever pin I pulse , both internal counters increase.
I have got around the problem by using an interrupt for one of the counters but there is something fishy going on.

  Quote   CONST wind = 6
CONST rain = 22

SETPIN wind, CIN
SETPIN rain, CIN
SETTICK 2000, tick

DO
LOOP

SUB tick
PRINT PIN(wind), PIN(rain)
END SUB


I use a 10k pullup resistor on each to V+ and capacitors across the inputs. I also tried a pulldown resistor instead but both counters still increment in unison.
I can't see any glitches with my CRO.

Jim
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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10572
Posted: 07:47am 16 Mar 2019
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I think I had got my Ors and my ANDs mixed up.
Please try attached - untested

2019-03-16_174719_ArmmiteL4.zip
 
TassyJim

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Joined: 07/08/2011
Location: Australia
Posts: 6353
Posted: 08:48am 16 Mar 2019
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Much better thank you.

Jim
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