Added exceptions to gpio class

2014-06-12 01:21:08 +02:00
parent 64d338cf90
commit cdb8edd4e0
5 changed files with 26 additions and 4 deletions
--- a/lib/Gpio.php
+++ b/lib/Gpio.php
@@ -19,12 +19,24 @@

 namespace NoccyLabs\Gpio;

+use NoccyLabs\Gpio\Exception\HardwareException;
+
 class Gpio implements \ArrayAccess
 {
    protected $gpio = array();
    
    /** @var NoccyLabs\Gpio\GpioMapperInterface */
    protected $mapper;
+    
+    public function __construct()
+    {
+        if (!file_exists("/sys/gpio")) {
+            throw new HardwareException("gpio sysfs is not available");
+        }
+        if (!is_writable("/sys/gpio/export")) {
+            throw new HardwareException("gpio sysfs is not writable");
+        }
+    }

    public function refresh()
    {