Lpc2000

If you have spare i/o pins, you can tie the capture signal to another 
pin for reading.

--- In lpc2000@yahoogroups.com, "moostieuk" <moostieuk@y...> wrote:
> 
> You can't do this!  Once the pin is set to one of the special
> functions you cannot read it's state. (Bit of a mistake imho, but
> theres probably a perfectly good explanation why this is the case)
> 
> What you need to do is:
> 
> Set the capture to rising edge.
> 
> When the interrupt trips, start a counter and switch the capture 
type
> to falling edge.
> 
> When the interrupt trips save your counter, that gives you 
your "mark"
> period.  Set the capture type back to rising edge and reset your 
counter.
> 
> When the interrupt trips again, save your counter that's 
your "space"
> period.
> 
> Repeat!
> 
> Adrian
> 
> --- In lpc2000@yahoogroups.com, dasbento@a... wrote:
> > Hello,
> > 
> > someone know how read pwm (i.e. detect if the value read (in CR0, 
CR1
> > and CR2) is rising edge or falling edge), since I have interrupts
> > enable in both transitions. My idea is the IOPIN register read 
only
> > the current state when the pins are defined as I/O but this pins 
are
> > defined as capture.
> > 
> > Someone already make any thing similar???
> > 
> > Thanks!!!
> >           Domingos
> > 
> > _________________________________________________________
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