Add first version

composer.json

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+{
+    "name": "lepiaf/serialport",
+    "description": "Serial port access convenience class",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Thierry Thuon",
+            "email": "[email protected]"
+        }
+    ],
+    "minimum-stability": "stable",
+    "autoload": {
+        "psr-4": {
+            "lepiaf\\SerialPort\\": "src/lepiaf/SerialPort"
+        }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.0.x-dev"
+        }
+    }
+}

src/lepiaf/SerialPort/Exception/DeviceNotAvailable.php

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+<?php
+
+namespace lepiaf\SerialPort\Exception;
+
+class DeviceNotAvailable extends \Exception
+{
+
+}

src/lepiaf/SerialPort/SerialPort.php

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+<?php
+
+namespace lepiaf\SerialPort;
+
+use lepiaf\SerialPort\Exception\DeviceNotAvailable;
+
+/**
+ * @author Thierry Thuon <[email protected]>
+ * @copyright MIT
+ */
+class SerialPort 
+{
+    private $fd;
+
+    public function open($device) 
+    {
+        // configure tty port
+        exec('stty -F '.$device.' cs8 9600 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke noflsh -ixon -crtscts');
+        $this->fd = fopen($device, 'w+b');
+
+        if (false !== $this->fd) {
+            stream_set_blocking($this->fd, false);
+
+            return true;
+        }
+
+        throw new DeviceNotAvailable($device);
+    }
+
+    public function write($data) 
+    {
+        return fwrite($this->fd, $data);
+    }
+
+    public function read($seperator) 
+    {
+        $chars = [];
+        $char = 0;
+
+        do {
+            $char = fread($this->fd, 1);
+            $chars[] = $char;
+        } while ($char != $seperator);
+
+        return substr(join('', $chars), 0, -1);
+    }
+
+    public function close()
+    {
+        return fclose($this->fd);
+    }   
+}