"S. Baglatzis" <SBaglatzis@MAIL.ONLINE-CLUB.DE> writes:
> I want to build an electronic speed controller with pic 16c84 .
> The PIC has to generate A PWM and to measure an impuls coming from
> receiver.

I took the easy way out with this problem: I used a 16C63, and
measured the incoming pulse widths in an ISR with the capture
modules.  The outgoing pulses are generated with straightforward
code with interrupts disabled.  I might miss an incoming pulse
while I generate the outgoing pulses, but for my application,
missing one pulse doesn't matter.

The drawback to this scheme is that I can only handle two channels,
since the 16C63 only has two capture/compare modules.  If I want
more, I'll have to either multiplex the capture/compare pins (and
reduce my sampling rate), or stick in another 16C63 and SPI them
together.

Brian