Adding interval reads to digitalRead.

dist/digital-pin.js

@@ -87,24 +87,28 @@
         });
       };
 
-      DigitalPin.prototype.digitalRead = function() {
-        var readData,
-          _this = this;
+      DigitalPin.prototype.digitalRead = function(interval) {
+        var readData;
         if (this.mode !== 'r') {
           this.self._setMode('r');
         }
         readData = null;
-        FS.readFile(this.pinFile, function(err, data) {
+        return setInterval(this._readFileCallback, interval);
+      };
+
+      DigitalPin.prototype._readFileCallback = function() {
+        var _this = this;
+        return FS.readFile(this.pinFile, function(err, data) {
+          var readData;
           if (err) {
             return _this.self.emit('error', "Error occurred while reading from pin " + _this.pinNum);
           } else {
             readData = data;
             console.log("Digital read VALUE ===>");
-            console.log(data);
+            console.log(data.toString());
             return _this.self.emit('digitalRead', data);
           }
         });
-        return readData;
       };
 
       DigitalPin.prototype._setMode = function(mode, emitConnect) {

examples/raspi_digitalread.coffee

@@ -12,6 +12,6 @@ Cylon.robot
     ]
 
   work: (my) ->
-    my.button.on 'push', -> my.led.toggle()
+    my.button.on 'push', console.log("Reading pin...")
 
 .start()

src/digital-pin.coffee

@@ -62,22 +62,23 @@ namespace 'Cylon.IO', ->
           @self.emit('digitalWrite', value)
       )
 
-    digitalRead: ->
+    digitalRead: (interval) ->
       @self._setMode('r') unless @mode == 'r'
       readData = null
 
+      setInterval(@_readFileCallback, interval)
+
+    _readFileCallback: ->
       FS.readFile(@pinFile, (err, data) =>
         if err
           @self.emit('error', "Error occurred while reading from pin #{ @pinNum }")
         else
           readData = data
           console.log("Digital read VALUE ===>")
-          console.log(data)
+          console.log(data.toString())
           @self.emit('digitalRead', data)
       )
 
-      readData
-
     # Sets the mode for the GPIO pin by writing the correct values to the pin reference files
     _setMode: (mode, emitConnect = false) ->
       if mode == 'w'