Implemented base of GpioMapperInterface with WiringPiMapper

lib/Gpio.php

@@ -1,38 +1,72 @@
 <?php
 
+/*
+ * Copyright (C) 2014, NoccyLabs
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 namespace NoccyLabs\Gpio;
 
-class Gpio
+class Gpio implements \ArrayAccess
 {
-    public function __construct()
-    {}
+    protected $gpio = array();
+    
+    /** @var NoccyLabs\Gpio\GpioMapperInterface */
+    protected $mapper;
 
-    // call export before getpin    
-    public function getPin($pinno)
-    {}
+    public function refresh()
+    {
+        $read = $this->fd_gpio;
+        $write = array();
+        $except = $read;
+        select($read, $write, $except, 0);
+        foreach($except as $fd) {
+            $pin = $this->getPinFromFd($fd);
+            $pin->doInterrupt();
+        
+        }
     
-    // export the pin
-    public function exportPin($pinno)
-    {}
+    }
     
-    // unexport the pin
-    public function unexportPin($pinno)
-    {}
+    public function setMapper(GpioMapperInterface $mapper=null)
+    {
+        $this->mapper = $mapper;
+        return $this;
+    }
     
-    // set handler, pass null to disable interrupts
-    public function setInterruptHandler(GpioPin $pin, callable $handler=null)
-    {}
+    public function offsetGet($index)
+    {
+        if ($this->mapper) { $index = $this->mapper->mapLogicalToGpioPin($index); }
+        if (empty($this->gpio[$index])) {
+            $this->gpio[$index] = new GpioPin($index);
+        }
+        return $this->gpio[$index];
+    }
     
-    // get the interrupt handler for the pin
-    public function getInterruptHandler(GpioPin $pin)
-    {}
+    public function offsetExists($index)
+    {
+        return array_key_exists($index, $this->gpio);
+    }
     
-    // set edge
-    public function setInterruptEdge(GpioPin $pin, $edge)
-    {}
+
+    public function offsetSet($index,$value)
+    {   throw new \Exception(); }
     
-    // get edge
-    public function getInterruptEdge(GpioPin $pin)
-    {}
+    public function offsetUnset($index)
+    {   
+        unset($this->gpio[$index]);
+    }
     
 }