Real time the right way?

[Darrel Taylor]

Have a look at paul borgmeier's clock routines.

It'll get you alot closer to real time.

Easy and Accurate Clocks without RTC IC
http://www.picbasic.co.uk/forum/showthread.php?t=2129
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[Michael]

Thanks, Darrel...great info.

I've never had an experience with the timer registers so I think I'll rewrite the stopwatch code just as a self tutorial.

I was just wondering, doing it the way I have based on build counters and instruction cycles there is a chance that the code could get corrupt and miscount as the pic would need a hard reset?

I suppose if you had a reference like the timer you could "reset" based on that or something.

I did see a strange count one time and that's all I could think of.

It'll be fun to study that material.

[Darrel Taylor]

No, I don't think so.

All clock programs have to do the Seconds = Seconds +1 kind of stuff. It just depends on the Time Base that determines the accuracy.

We'd have to see the code to figure out if there was a Counting problem.

But in general, if the routine counts properly, it won't get corrupted. Well, except for a stray Cosmic Ray or two, every 10 years.
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[BobK]

Good morning,

Don't forget Melanie's Olympic Timer program! Measures in 1/100th of a second if I recall. AND it's written in plain English so you can easily follow what is going on in the program.

BobK

[Michael]

I'll search that and print it out.

Actually, my code works fine except for something that looked fishy one time...it's stays in sequence all the way to 59:59 and that's all that matters.

I spent a whole afternoon trial and error with PAUSEUS to get it right. (Too lazy to do the math to figure it out).

One thing I need to look at are the led displays...they could be a bit brighter but then there being fed by the constant loop of the 4 mhz Picbasic program. I'm sure if they were scanned at a lower frequency they would brighten up.