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Loop Timer

Arv Evans All Messages By This Member #1471 The Arduino millis() millisecond timer runs uninterrupted? and loops around after? about 50 days.? This can be used to time between events such as loop completion, or loop being delayed. ? This may be helpful...or not. Arv _._
Tom, wb6b All Messages By This Member #1473 On Fri, Apr 10, 2020 at 03:07 PM, Arv Evans wrote: runs uninterrupted? and loops around after? about 50 days I looked into this corner case way back in another project. In that case, best to my recollection, the overflow was handled automatically by the way twos compliment arithmetic works. But, I don't remember the constraints.? Tom, wb6b
Arv Evans All Messages By This Member #1476 Tom When I used it (several years ago) I added an RC pullup on one digital I/O pin. Then set an interrupt to trigger when that pin went high.? The interrupt routine? compared current millis() with older millis() to determine that the loop was not? slowing down between checks.? The interrupt routine reset the RC timer once? millis() had been read. May be useful, maybe not.? I just mentioned it in case someone was looking? for a way to verify the code was running at normal speed. Arv _._ toggle quoted message Show quoted text On Fri, Apr 10, 2020 at 4:22 PM Tom, wb6b <wb6b@...> wrote: On Fri, Apr 10, 2020 at 03:07 PM, Arv Evans wrote: runs uninterrupted? and loops around after? about 50 days I looked into this corner case way back in another project. In that case, best to my recollection, the overflow was handled automatically by the way twos compliment arithmetic works. But, I don't remember the constraints.? Tom, wb6b
Gordon Gibby KX4Z All Messages By This Member #1480 Thank you, Arv, I think we can get around this by just having people reboot the system once a week.

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