se / wired-pi
WiredPi is a library for connecting php and the Raspberry Pi GPIO via wiringPi
Requires
- php: >=5.3.3
- symfony/http-foundation: 2.3.*
Requires (Dev)
- phpunit/phpunit: 3.7.*
This package is not auto-updated.
Last update: 2024-11-05 02:18:05 UTC
README
WiredPi is a library for connecting php and the Raspberry Pi GPIO via wiringPi.
Dev branch is master branch.
Table of Contents
Installation
The recommended way to install is through Composer.
{ "require": { "se/wired-pi": "dev-master" } }
WiredPi uses internally the WiringPi library. A big thank you @drogon. To install it follow the following steps:
$ cd /opt $ sudo mkdir wiringpi $ sudo chown $USER ./wiringpi $ cd wiringpi $ git clone git://git.drogon.net/wiringPi ./ $ git pull origin $ ./build
(The package git-core is needed for git operations. Install it via sudo apt-get install git-core. )
Usage
Basic usage
Require the composer autload file and create a new Board.
require_once __DIR__.'/vendor/autoload.php'; use \SE\Component\WiredPi; $platform = new WiredPi\Platform\RaspberryPi(); $board = new WiredPi\Board($platform);
The next step is to apply a port map to the port so it knows what pins can be controlled.
$map = new WiredPi\PortMap(array( // number of the GPIO-pin, 18 // you can set default options too, STATE_ON turns the pin by default on 23 => array(WiredPi\Port::STATE => WiredPi\Port::STATE_ON) ));
Now add the port map to your board instance and refresh it. The settings take effect immediately.
$board->setPorts($map); $board->refresh(); // applies the current state to the microcontroller // Modification of ports need to be applied again $board->getPort(18)->on(); $board->refresh();
Read pin
For reading the status of your pin you can use the platform instance you passed to the board.
$port = $board->getPort(18); $status = $platform->read($port); // returns 0 or 1
By default the pins are set to OUT.
For receiving the status of a pin from IN set the mode to IN.
$port = $board->getPort(18); $port->setMode(WiredPi\Port::MODE_IN); // Do something when Pin switches to 1 while(true) { if($platform->read($port) == '1') { print sprintf('Pin %s went to %s', $port, '1') break; } usleep(5000); // Let the system catch up }
Prototyping server
WiredPi includes a protyping server to control pins without the need to setup them from within a php script. Run it by using the built in php server (Since PHP 5.4.0).
$ php -S localhost:8000 scripts/server.php
For more examples have a look at examples/.