added sensor JSON docs

Signed-off-by: Budanov <daniil.budanov@intel.com>
Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>

src/wheelencoder/wheelencoder.json

@@ -0,0 +1,46 @@
+{    
+    "Library": "wheelencoder",
+    "Description": "Wheel Encoder Library",
+    "Sensor Class":
+    {
+        "WheelEncoder":
+        {
+            "Brief": "Wheel Encoder",
+            "Description": "Wheel encoders use non-contact methods to give rotation information. This sensor was developed for the DFRobot Wheel Encoder, though it could be used for any counting time-based task. When you instantiate a class of this type, the gpio pin specified is connected to an interrupt. Whenever a low to high transition occurs on the gpio pin, the internal counter is incremented by one. This class also includes a millisecond counter, so that you can correlate the number of counts to a time period for calculating an RPM or other value as needed.",
+            "Known As": ["Wheel Encoder"],
+            "Categories": ["other"],
+            "Connections": ["gpio"],
+            "Project Type": ["prototyping"],
+            "Manufacturers": ["dfrobot"],
+            "Kits": ["DFRobot 3PA", "DFRobot 4WD"],
+            "Image": "wheelencoder.jpg",
+            "Examples":
+ 			{
+                "Python": ["wheelencoder.py"],
+                "Node.js": ["wheelencoder.js"],
+                "C++": ["wheelencoder.cxx"],
+                "C": ["wheelencoder.c"]
+            },
+            "Specifications":
+            {
+                "Vdd": {"unit": "v", "constant" : 5},
+                "Itotal" : {"unit": "mA", "high": 20},
+                "Resolution": {"unit": "ppr", "constant" : 20}
+            },
+            "Platforms":
+            {
+                "Intel Joule Module":
+                {
+                    "Notes": [""],
+                    "Images": [""]
+                }
+            },
+            "Urls" :
+            {
+                "Product Pages": ["https://www.dfrobot.com/product-98.html"],
+                "Datasheets": ["https://www.dfrobot.com/wiki/index.php/Wheel_Encoders_for_DFRobot_3PA_and_4WD_Rovers_(SKU:SEN0038)"],
+                "Schematics": ["http://www.dfrobot.com/wiki/images/b/b9/FIT0029_Encoder_Schematics.png"]
+            }
+        }
+    }
+}