[oopic] Re: Providing a clock/time to the PIC

Thanks all for the replies. More stuff learnt with every post. I just
realised that oopic does not support double or float numbers? hmm
this is because my application deals with controlling a stepper motor
to move a solar tracker, not quite the usual applications that ppl
use the oopic for. So i didn't realised when i ordered, how would i
store a values from the calculations and calculate inverse. One more
problem is i realised that only single step movement is possible for
the stepper function. >.<

Guess i have to make do, the oopic simple interfacing allows me to do
the prototype that demostrates my solar tracking. Hmm perhaps i would
list it as future improvement.

Perhaps i would be able to explore more of this when i am finished
with my deadline for the project. hehe

Cheers,
minghui

--- In oopic@yahoogroups.com, ooPIC Tech Support <dennis.clark@...>
wrote:
>
> The oRTC can make this a little simpler, but you'll still have some
> accuracy issues. Look at the oTimer options which include the
ability
> to put a 32.7KHz crystal on an IOline and get a real RTC signal for
the
> oTimer output. However, you'd have to write your own functions to
> decode it, it will be closer to correct for time for a longer
time.
> Note, to keep the RTC in proper sync you cannot interrupt power to
it.
>
> DLC
>
> minghui1984 wrote:
> > Hi guys, i got a question. As i am dealing with solar tracking
> > device, i would like to be able to feedback the time to the PIC.
i
> > look through the object list and found several options that i
could
> > use. Thought i just ask if there is any shorter way of doing it.
> >
> > What i need:
> > Implementing a "clock" by using counters, using the execution
cycle
> > and frequency of the PIC (in this case ooPIC is 20MHz). I would
> >
> > counter_sec++;
> > if counter_sec == 60
> > {
> > counter_min++;
> > counter_sec = 0; 'resetting it back to 0
> > }
> > if counter_min == 60
> > {
> > counter_hrs++;
> > counter_min = 0; 'resetting it back to 0
> > }
> >
> > if counter_hrs == 24
> > {
> > day++;
> > counter_hrs =0; 'resetting it back to 0
> > }
> >
> > Loop
> >
> > My question is will this code work?
> > how do i make this function keep on running outside the main
function
> > Is this a good way of "telling" the time? Cos my device is a
> > standalone kind so no PC/Laptops will be connected once its
configured
> >
> > In the object list, there are oTimer, oCounter, oClock, are these
> > suited for the purpose? I looked thru the example, but i dun
quite
> > get it. >.<
> >
> > Anyone got any hints to how i might make this thing work?
> >
> > Thanks once again
> > Minghui
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>
> --
> ------------------------------------------------------
> Dennis Clark ooPIC Tech Support
> www.oopic.com
> ------------------------------------------------------
>

------------------------------------

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