Adde pure GPIO example and updated digital pin lib

dist/digital-pin.js

@@ -0,0 +1,74 @@
+/*
+ * Linux IO DigitalPin
+ * cylonjs.com
+ *
+ * Copyright (c) 2013 The Hybrid Group
+ * Licensed under the Apache 2.0 license.
+*/
+
+
+(function() {
+  'use strict';
+  var FS, namespace;
+
+  FS = require('fs');
+
+  namespace = require('node-namespace');
+
+  namespace('Cylon.IO', function() {
+    return this.DigitalPin = (function() {
+      var GPIO_DIRECTION_READ, GPIO_DIRECTION_WRITE, GPIO_PATH, HIGH, LOW;
+
+      GPIO_PATH = "/sys/class/gpio";
+
+      GPIO_DIRECTION_READ = "in";
+
+      GPIO_DIRECTION_WRITE = "out";
+
+      HIGH = 1;
+
+      LOW = 0;
+
+      function DigitalPin(opts) {
+        this.self = this;
+        this.pinNum = opts.pin;
+        this.status = 0;
+        FS.writeFile("" + GPIO_PATH + "/export", "" + this.pinNum);
+        this._setMode(opts.mode);
+      }
+
+      DigitalPin.prototype.digitalWrite = function(value) {
+        var status;
+        if (this.mode !== 'w') {
+          setMode('w');
+        }
+        return status = value === 1 ? 'high' : 'low';
+      };
+
+      DigitalPin.prototype._setMode = function(mode) {
+        this.mode = mode;
+        if (this.mode === 'w') {
+          return FS.open("" + GPIO_PATH + "/gpio" + this.pinNum + "/direction", "w", function(err, fd) {
+            if (!err) {
+              return FS.write(fd, GPIO_DIRECTION_WRITE);
+            } else {
+              return console.log("EROR OCCURED: while opening " + GPIO_PATH + "/gpio" + this.pinNum + "/direction");
+            }
+          });
+        } else if (mode === 'r') {
+          return FS.open("" + GPIO_PATH + "/gpio" + this.pinNum + "/direction", "w", function(err, fd) {
+            if (!err) {
+              return FS.write(fd, GPIO_DIRECTION_READ);
+            } else {
+              return console.log("EROR OCCURED: while opening " + GPIO_PATH + "/gpio" + this.pinNum + "/direction");
+            }
+          });
+        }
+      };
+
+      return DigitalPin;
+
+    })();
+  });
+
+}).call(this);

dist/io.js

@@ -0,0 +1,27 @@
+/*
+ * Linux IO
+ * cylonjs.com
+ *
+ * Copyright (c) 2013 The Hybrid Group
+ * Licensed under the Apache 2.0 license.
+*/
+
+
+(function() {
+  'use strict';
+  var namespace;
+
+  namespace = require('node-namespace');
+
+  namespace('Cylon', function() {
+    return this.IO = (function() {
+      function IO(opts) {
+        this.self = this;
+      }
+
+      return IO;
+
+    })();
+  });
+
+}).call(this);

examples/pure_gpio.coffee

@@ -0,0 +1,5 @@
+require ('./digital-pin')
+
+pin4 = new DigitalPin(pin: 4)
+
+pin4.digitalWrite(1)

src/digital-pin.coffee

@@ -24,9 +24,18 @@ namespace 'Cylon.IO', ->
     constructor: (opts) ->
       @self = this
       @pinNum = opts.pin
-      @pinFile = ''
+      @status = 0
+
+      # Creates the GPIO file to read/write from
+      FS.writeFile("#{ GPIO_PATH }/export", "#{ @pinNum }")
+
       @_setMode(opts.mode)
 
+    digitalWrite: (value) ->
+      setMode('w') unless @mode == 'w'
+      status = if (value == 1) then 'high' else 'low'
+
+    # Sets the mode for the GPIO pin by writing the correct values to the pin reference files
     _setMode: (mode) ->
       @mode = mode
       if @mode == 'w'
@@ -36,13 +45,10 @@ namespace 'Cylon.IO', ->
           else
             console.log("EROR OCCURED: while opening #{ GPIO_PATH }/gpio#{ @pinNum }/direction")
         )
-        @pinFile = FS.open("#{ GPIO_PATH }/gpio#{ @pinNum }/value", "w")
-      elsif mode =='r'
+      else if mode =='r'
         FS.open("#{ GPIO_PATH }/gpio#{ @pinNum }/direction", "w", (err, fd) ->
           unless (err)
             FS.write(fd, GPIO_DIRECTION_READ)
           else
             console.log("EROR OCCURED: while opening #{ GPIO_PATH }/gpio#{ @pinNum }/direction")
         )
-        @pinFile = FS.open("#{ GPIO_PATH }/gpio#{ @pinNum }/value", "r")
-      end