No, the comparator modules are not the Output Compare modules.=20

The Output Compare modules are often used to generate PWM or similar, the c=
omparator modules are analogue peripherals.



>=20
> Alan,
>      It still sounds like the 628 would be the one to use. It has compara=
tor units
> in it. For a moment I thought I knew what to do and then I lost it. Hum.
> Would someone please take the time to sit down and write some C code that
> would do these things? I know that I am asking a lot but I really need th=
e help
> with this.
> Thanks,
> rich!
>=20
> On 7/18/2014 3:47 AM, alan.b.pearce@stfc.ac.uk wrote:
> > Creating the pulses you want is made very easy using the Output Compare
> modules in the more recent processors.
> >
> > I did a pulse generation system in a PIC24 where we needed three period=
ic
> pulses with known delays between them. Using three Output Compare
> modules synchronised to the same reset pulse and clocked together made it
> real easy. You could do a similar thing using two modules, one to generat=
e
> the one second wide pulse, and the second to generate a one clock wide
> pulse for the strobe signal you want, which could be delayed from the one
> second pulse by one clock pulse.
> >
> >
> >
> >> -----Original Message-----
> >> From: Richard R. Pope [mailto:mechanic_2@charter.net]
> >> Sent: 18 July 2014 09:20
> >> To: Microcontroller discussion list - Public.
> >> Subject: Re: [Pic] Making a special timer!
> >>
> >> Hello,
> >>       I'm replying to myself because it is the part about controlling
> >> the one second pulse that I just don't know how to do. Do I use a
> >> timer or do I setup a set of delay loops. The more accurate the one
> >> second pulse the more accurate that the frequency being displayed is
> >> going to be. A 4MHz clock means that 1 megacycles are executed in one
> >> second. So, you do the initialization, open the gate for one second,
> >> read the pot, wait for a time that corresponds to the pot setting,
> >> send out the reset pulse, open the gate for one second, and repeat the=
se
> steps forever.
> >> Correct?
> >> Thanks,
> >> rich!
> >> P.S. This looks like an outline for the program. Correct?
> >> rich!
> >>
> >> On 7/18/2014 3:03 AM, Richard R. Pope wrote:
> >>> Joe,
> >>>        That is true. Setup a clock the can output a high for one
> >>> second on demand. Read the POT, output the reset pulse, turn on the
> >>> one second clock that corresponds to the setting of the POT, and do
> >>> it all over again. Is that correct?
> >>> Thanks,
> >>> rich!
> >>>
> >>>
>=20
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--=20
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