On Sun, May 16, 2010 at 02:57:14PM +0200, Guy COLIN wrote:
> Hi Paul,
>
> Thanks for your quick and full answer.
>
> Yes even if I'm not a pure hardware guy (I'm a Guy guy (Guy is my name
> ;-) )), I had the Maxim DS2413 documentation nearby when performing the
> first tests. That's why I found it strange to be reversed. However after
> reading owfs DS2413 man page, I saw it was consistent.
> I clearly understand your choice: 1 is ON and O is OFF, it's the
> behavior everybody expect.
That's true when I first tried to echo 1 to turn on a relay on the hobby
boards 8 channel IO board, but notice this:
1gargamel:/etc/owfs/bus3/aux/29.E73E06000000# cat sensed.0; echo
1
gargamel:/etc/owfs/bus3/aux/29.E73E06000000# echo 1 > PIO.0
gargamel:/etc/owfs/bus3/aux/29.E73E06000000# cat sensed.0; echo
0
gargamel:/etc/owfs/bus3/aux/29.E73E06000000# echo 0 > PIO.0
gargamel:/etc/owfs/bus3/aux/29.E73E06000000# cat sensed.0; echo
1
This is not super obvious :)
Paul, I support your choice of 1 for on and 0 for off, but if you use that,
you should revert the sensed values too: getting back the opposite of what
you just echoed in is not consistent IMO.
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems & security ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/
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