On Mon, 12 Aug 2002, Jason R Thorpe wrote:

> Folks...
> 
> Soon I'm going to start work on a generic interface for manipulating
> GPIO pins.  I'm still trying to figure out exactly what it should have,
> but let me give you an idea of what I'm thinking about so far:
> 


> 			echo '1' > /dev/gpio0	# turn pin on
> 			echo '0' > /dev/gpio0	# turn pin off
> 			echo 't' > /dev/gpio0	# toggle pin


how about a pulse pin?  I'm thinking of a case where you need to load
something serially so you set a value on 1 pin and then pulse another
which acts as a clock.


Is there anyway to provide some specific timing on these pins?  For
example I think the '1-wire' interface used by some Dallas Semiconductor
chips (and others) needs some very specific timing of its pulses.

-Dan