HIGH and LOW commands

Archiver

I like to know if there is any advantage of using
OUT/DIR commands over High and Low commands.

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Archiver

Ali,

The main advantage is that you can set a group of pins at the
same time with the OUT and DIR commands. HIGH and LOW set only
one pin.

DLC

--- In basicstamps@y..., Ali <kambms@y...> wrote:
>
> I like to know if there is any advantage of using
> OUT/DIR commands over High and Low commands.
>
> __________________________________________________
> Do You Yahoo!?
> Everything you'll ever need on one web page
> from News and Sport to Email and Music Charts
> http://uk.my.yahoo.com

Archiver

I use basic stamp to control the motors....this i do by setting pin
1 and 2 high..
High 1 or High 2

the alternative is to...define pin 1 and 2 as output pins
Dir1=1
and then use out1=1 to set it high...
does this make the execution faster?


--- In basicstamps@y..., "dennis_lm_clark" <dlc@v...> wrote:
> Ali,
>
> The main advantage is that you can set a group of pins at the
> same time with the OUT and DIR commands. HIGH and LOW set only
> one pin.
>
> DLC
>
> --- In basicstamps@y..., Ali <kambms@y...> wrote:
> >
> > I like to know if there is any advantage of using
> > OUT/DIR commands over High and Low commands.
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Everything you'll ever need on one web page
> > from News and Sport to Email and Music Charts
> > http://uk.my.yahoo.com

Archiver

Any "advantage" depends on your application requirements.

With HIGH and LOW, you actually do two things at once (set the DIRS bit and the
OUTS bit for the pin), but you can only affect one pin at a time.

By using DIRS and OUTS directly, you can affect multiple pins at the same time.
So, with just two lines of code, you could set the directions and the output
states of all 16 I/O pins.

The only "disadvantage" to using DIRS and OUTS is for the new programmer who may
not understand that a "1" bit in DIRS makes the pin an output, and that a "1"
bit in OUTS makes the pin high. With HIGH and LOW there is no ambiguity.

-- Jon Williams
-- Applications Engineer, Parallax


In a message dated Fri, 26 Jul 2002 15:54:12 +0100 (BST), kambms@y...
writes:

> I like to know if there is any advantage of using
> OUT/DIR commands over High and Low commands.