>-----Original Message-----
>From: Robert B. [mailto:piclist@NERDULATOR.NET]
>Sent: 23 April 2004 03:23
>To: PICLIST@MITVMA.MIT.EDU
>Subject: Re: [PIC:] Slow PWM signal in hardware
>
>
>Thanks for the suggestions.  I wound up just doing it in
>software with (as
>usual) a crude hack that works pretty well.  It was way less
>painful than I thought it would be, actually!  Is there a
>reason Microchip doesn't make this a little easier? It seems
>it would be a fairly common task at least.
>
>

Microchip optimised the CCP to give as high frequency as possible whilst
still maintainging good resolution, which is generaly more usefull for the
majority of applications that would use the PWM as an analog output.
However, adding an extra few stategs on the pre-scaler would certainly have
increased it's usefulness for this type of application.

BTW, I tried my suggestion using the simulator and couldn't get it to work.
Microchips documentation isn't overly clear, but it looks like if you
configure both CCP's for compare mode, they will both use the special
trigger mode which clears Timer1.  That or my test program was complete
rubbish and I'm not ruling that out!

Regards

Mike




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