Implemented base of GpioMapperInterface with WiringPiMapper

lib/GpioPin.php

@@ -0,0 +1,176 @@
+<?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;
+
+use NoccyLabs\Sansi\Charset as CS;
+
+/**
+ * GPIO pin implementation. This class wraps all interaction with a GPIO pin,
+ * thus decoupling it from the main Gpio class.
+ *
+ */
+class GpioPin
+{
+    protected $fd;
+    
+    protected $pin;
+    
+    protected $value = 0;
+    
+    protected $direction;
+    
+    protected $edge;
+    
+    protected $handler;
+
+    protected $label;
+
+    public function __construct($pin)
+    {
+        $this->pin = (int)$pin;
+        //$this->fd = fopen("/sys/class/gpio/gpio{$pin}/value", "rb");
+    }
+    
+    public function __destruct()
+    {
+        //fclose($this->fd);
+    }
+    
+    public function setDirection($direction)
+    {
+        if (!in_array($direction, array("input", "output"))) {
+            throw new \Exception;
+        }
+        $this->direction = $direction;
+        //file_put_contents("/sys/class/gpio/{$this->pin}/direction", $direction);
+        return $this;
+    }
+    
+    public function getDirection()
+    {
+        return $this->direction;
+    }
+    
+    public function setValue($value)
+    {
+        $this->value = (bool)$value;
+        //file_put_contents("/sys/class/gpio/{$this->pin}/value", (int)$this->value);
+        return $this;
+    }
+    
+    public function getValue()
+    {
+        return $this->value;
+    }
+    
+    public function setLabel($label)
+    {
+        $this->label = (string)$label;
+        return $this;
+    }
+    
+    public function getLabel()
+    {
+        return $this->label;
+    }
+    
+    public function export()
+    {
+        /*
+        file_put_contents("/sys/class/gpio/export", $this->pin);
+        if (!file_exists("/sys/class/gpio/gpio{$this->pin}")) {
+            throw new \Exception();
+        }
+        */
+        return $this;
+    }
+    
+    public function unexport()
+    {
+        //file_put_contents("/sys/class/gpio/unexport", $this->pin);
+        return $this;
+    }
+    
+    public function setEdge($edge)
+    {
+        if (!in_array($edge, array("rising", "falling", "both", "none"))) {
+            throw new \Exception;
+        }
+        $this->edge = $edge;
+        //file_put_contents("/sys/class/gpio/{$this->pin}/edge", $edge);
+        return $this;
+    }
+    
+    public function getEdge()
+    {
+        return $this->edge;
+    }
+    
+    public function setHandler(callable $handler=null)
+    {
+        return $this;
+    }
+
+    public function doInterrupt()
+    {
+        fseek($this->fd,0,SEEK_SET);
+        $val = fgets($this->fd);
+    }
+    
+    public function dumpStatus($ansi=false)
+    {
+        if ($ansi) {
+            $status = "\e[43;37;1m          GPIO{$this->pin}          \e[0m\n";
+            $direction = "\e[36;1m".
+                ($this->direction=="input"?(CS::chr(0x2190)):(CS::chr(0x2192))).
+                "\e[0m ".$this->direction;
+            $edge = "\e[33;1m";
+            if ($this->edge == "rising") {
+                $edge.= CS::chr(0x21A5)."\e[0m rising";
+            } elseif ($this->edge == "falling") {
+                $edge.= CS::chr(0x21A7)."\e[0m falling";
+            } else {
+                $edge.= "\e[0m".$this->edge;
+            }
+        } else {
+            $status = "********** GPIO{$this->pin} **********\n";
+            $direction = $this->direction;
+        }
+    
+    
+        foreach(array(    
+            "Direction" => $direction,
+            "Value" => ($this->value?1:0),
+            "Edge" => $edge,
+            "Label" => $this->label,
+            "Hardware" => "unknown",
+            "Int count" => 0
+        ) as $k=>$v) {
+            if ($ansi) {
+                $status.= sprintf("  \e[32;1m%10s\e[0m: \e[0m%s\e[0m\n", $k, $v);
+            } else {
+                $status.= sprintf("  %-10s: %s\n", $k, $v);
+            }
+        }
+        error_log($status);
+        return $this;
+    }
+   
+}