Remove @self references in favor of just @ and fix set mode to udpate the obj attr when actually changing the mode.

dist/digital-pin.js

@@ -36,7 +36,6 @@
       LOW = 0;
 
       function DigitalPin(opts) {
-        this.self = this;
         this.pinNum = opts.pin;
         this.status = 'low';
         this.ready = false;
@@ -75,14 +74,14 @@
       DigitalPin.prototype.digitalWrite = function(value) {
         var _this = this;
         if (this.mode !== 'w') {
-          this.self._setMode('w');
+          this._setMode('w');
         }
         this.status = value === 1 ? 'high' : 'low';
         return FS.writeFile(this._valuePath(), value, function(err) {
           if (err) {
-            return _this.self.emit('error', "Error occurred while writing value " + value + " to pin " + _this.pinNum);
+            return _this.emit('error', "Error occurred while writing value " + value + " to pin " + _this.pinNum);
           } else {
-            return _this.self.emit('digitalWrite', value);
+            return _this.emit('digitalWrite', value);
           }
         });
       };
@@ -91,34 +90,34 @@
         var readData,
           _this = this;
         if (this.mode !== 'r') {
-          this.self._setMode('r');
+          this._setMode('r');
         }
         readData = null;
         return setInterval(function() {
           return FS.readFile(_this._valuePath(), function(err, data) {
             if (err) {
-              return _this.self.emit('error', "Error occurred while reading from pin " + _this.pinNum);
+              return _this.emit('error', "Error occurred while reading from pin " + _this.pinNum);
             } else {
               readData = data;
-              return _this.self.emit('digitalRead', data);
+              return _this.emit('digitalRead', data);
             }
           });
         }, interval);
       };
 
       DigitalPin.prototype.setHigh = function() {
-        return this.self.digitalWrite(1);
+        return this.digitalWrite(1);
       };
 
       DigitalPin.prototype.setLow = function() {
-        return this.self.digitalWrite(0);
+        return this.digitalWrite(0);
       };
 
       DigitalPin.prototype.toggle = function() {
         if (this.status === 'low') {
-          return this.self.setHigh();
+          return this.setHigh();
         } else {
-          return this.self.setLow();
+          return this.setLow();
         }
       };
 
@@ -126,7 +125,7 @@
         var _this = this;
         return FS.writeFile(this._exportPath(), "" + this.pinNum, function(err) {
           if (err) {
-            return _this.self.emit('error', 'Error while creating pin files');
+            return _this.emit('error', 'Error while creating pin files');
           } else {
             return _this._openPin();
           }
@@ -134,15 +133,15 @@
       };
 
       DigitalPin.prototype._openPin = function() {
-        this.self._setMode(this.mode, true);
+        this._setMode(this.mode, true);
-        return this.self.emit('open');
+        return this.emit('open');
       };
 
       DigitalPin.prototype._closeCallback = function(err) {
         if (err) {
-          return this.self.emit('error', 'Error while closing pin files');
+          return this.emit('error', 'Error while closing pin files');
         } else {
-          return this.self.emit('close', this.pinNum);
+          return this.emit('close', this.pinNum);
         }
       };
 
@@ -151,6 +150,7 @@
         if (emitConnect == null) {
           emitConnect = false;
         }
+        this.mode = mode;
         if (mode === 'w') {
           return FS.writeFile(this._directionPath(), GPIO_DIRECTION_WRITE, function(err) {
             return _this._setModeCallback(err, emitConnect);
@@ -164,11 +164,11 @@
 
       DigitalPin.prototype._setModeCallback = function(err, emitConnect) {
         if (err) {
-          return this.self.emit('error', "Setting up pin direction failed");
+          return this.emit('error', "Setting up pin direction failed");
         } else {
           this.ready = true;
           if (emitConnect) {
-            return this.self.emit('connect', mode);
+            return this.emit('connect', this.mode);
           }
         }
       };

src/digital-pin.coffee

@@ -25,7 +25,6 @@ namespace 'Cylon.IO', ->
     LOW = 0
 
     constructor: (opts) ->
-      @self = this
       @pinNum = opts.pin
       @status = 'low'
       @ready = false
@@ -51,66 +50,67 @@ namespace 'Cylon.IO', ->
       @_closeCallback(false)
 
     digitalWrite: (value) ->
-      @self._setMode('w') unless @mode == 'w'
+      @_setMode('w') unless @mode == 'w'
       @status = if (value == 1) then 'high' else 'low'
 
       FS.writeFile(@_valuePath(), value, (err) =>
         if (err)
-          @self.emit('error', "Error occurred while writing value #{ value } to pin #{ @pinNum }")
+          @emit('error', "Error occurred while writing value #{ value } to pin #{ @pinNum }")
         else
-          @self.emit('digitalWrite', value)
+          @emit('digitalWrite', value)
       )
 
     # Reads the pin input every interval amount of time:
     # params:
     #   interval: amount in miliseconds
     digitalRead: (interval) ->
-      @self._setMode('r') unless @mode == 'r'
+      @_setMode('r') unless @mode == 'r'
       readData = null
 
       setInterval(() =>
         FS.readFile(@_valuePath(), (err, data) =>
           if err
-            @self.emit('error', "Error occurred while reading from pin #{ @pinNum }")
+            @emit('error', "Error occurred while reading from pin #{ @pinNum }")
           else
             readData = data
-            @self.emit('digitalRead', data)
+            @emit('digitalRead', data)
         )
       , interval)
 
     setHigh: ->
-      @self.digitalWrite(1)
+      @digitalWrite(1)
 
     setLow: ->
-      @self.digitalWrite(0)
+      @digitalWrite(0)
 
     toggle: ->
       if @status == 'low'
-        @self.setHigh()
+        @setHigh()
       else
-        @self.setLow()
+        @setLow()
 
     # Creates the GPIO file to read/write from
     _createGPIOPin: () ->
       FS.writeFile(@_exportPath(), "#{ @pinNum }", (err) =>
         if(err)
-          @self.emit('error', 'Error while creating pin files')
+          @emit('error', 'Error while creating pin files')
         else
           @_openPin()
       )
 
     _openPin: () ->
-      @self._setMode(@mode, true)
+      @_setMode(@mode, true)
-      @self.emit('open')
+      @emit('open')
 
     _closeCallback: (err) ->
       if(err)
-        @self.emit('error', 'Error while closing pin files')
+        @emit('error', 'Error while closing pin files')
       else
-        @self.emit('close', @pinNum)
+        @emit('close', @pinNum)
 
     # Sets the mode for the GPIO pin by writing the correct values to the pin reference files
     _setMode: (mode, emitConnect = false) ->
+      @mode = mode
       if mode == 'w'
         FS.writeFile(@_directionPath(), GPIO_DIRECTION_WRITE, (err) => @_setModeCallback(err, emitConnect) )
       else if mode =='r'
@@ -118,10 +118,10 @@ namespace 'Cylon.IO', ->
 
     _setModeCallback: (err, emitConnect) ->
       if (err)
-        @self.emit('error', "Setting up pin direction failed")
+        @emit('error', "Setting up pin direction failed")
       else
         @ready = true
-        @self.emit('connect', mode) if emitConnect
+        @emit('connect', @mode) if emitConnect
 
     _directionPath: () ->
       "#{ @_pinPath() }/direction"