if memory serves...

you can look into using a shared memory block, or pipes to communicate
between the php/c app....

-----Original Message-----
From: Tobias Krieger [mailto:tobias.krie...@teamfrednet.org]
Sent: Sunday, June 21, 2009 2:44 PM
To: Nathan Nobbe
Cc: php-general@lists.php.net
Subject: Re: [PHP] Passing Values between C App and PHP

Am 21.06.2009 um 23:31 schrieb Nathan Nobbe:

> On Sun, Jun 21, 2009 at 3:25 PM, Tobias Krieger
> > wrote:
> Hi,
> I've recently written an eMail regarding I2C and PHP - since I
> haven't found a nice solution yet, I'm considering writting the I2C
> part (opening device, writing, reading,...) in C (that's simple) and
> to recieve (and returning) the values through PHP and Javascript.
> E.g. Website (PHP/Javascript) -> set a new motorspeed -> PHP passes
> the new speed to C Application -> C AP opens and writes the new
> speed onto the I2C Bus -> Motor executes -> returns ack ->----
> Is this somehow, and not complicated possible?
> if the C program is written such that it can start and stop on every
> request rather than as a daemon, its as simple as shell_exec().
> write your C app to take args over the cli and then pass them in
> through the call:
> <?php
> $result = shell_exec('myI2C -speed 50');
> ?>
> something of that nature.
> -nathan
This would be a nice and fast solution, but unfortunatelly, it's like
that the C programm needs to surveilance the hardware all the time
(controlling values,...) hence, it would run more as a "daemon".



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