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.krieger@xxxxxxxxxxxxxxx] Sent: Sunday, June 21, 2009 2:44 PM To: Nathan Nobbe Cc: php-general@xxxxxxxxxxxxx Subject: Re: 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 <tobias.krieger@xxxxxxxxxxxxxxx > > 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". thx, tobias -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
