rgbringcoder: Initial implementation.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/javascript/rgbringcoder.js

@@ -0,0 +1,98 @@
+/*jslint node:true, vars:true, bitwise:true, unparam:true */
+/*jshint unused:true */
+
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+var ringcoderObj = require('jsupm_rgbringcoder');
+
+// There are a lot of pins to hook up.  These pins are valid for the
+// Edison board, but may need to be adjusted for other platforms.
+
+// In order:
+// enable      - 4
+// latch       - 10
+// clear       - 11
+// clock       - 2
+// data        - 9
+// switch      - 7
+
+// red pwm     - 3
+// green pwm   - 5
+// blue pwm    - 6
+
+// encA        - 12
+// encB        - 13
+var ringCoder = new ringcoderObj.RGBRingCoder(4, 10, 11, 2, 9, 7, 12, 13, 3, 
+                                              5, 6);
+
+var spin = 0x0001;
+var oldState = false;
+var oldPos = 0;
+
+// Lets go green
+ringCoder.setRGBLED(0.99, 0.01, 0.99);
+
+setInterval(function()
+{
+    // you spin me round...
+    if ((spin & 0xffff) == 0)
+        spin = 0x0001;
+    
+    ringCoder.setRingLEDS(spin);
+    spin <<= 1;
+    
+    // check button state
+    var bstate = ringCoder.getButtonState();
+    if (bstate != oldState)
+    {
+        console.log("Button state changed from " + oldState + " to "
+            + bstate);
+        oldState = bstate;
+    }
+    
+    // check encoder position
+    var epos = ringCoder.getEncoderPosition();
+    if (epos != oldPos)
+    {
+        console.log("Encoder position changed from " + oldPos + " to "
+            + epos);
+        oldPos = epos;
+    }
+}, 100);
+
+
+// exit on ^C
+process.on('SIGINT', function()
+{
+    ringCoder = null;
+    ringcoderObj.cleanUp();
+    ringcoderObj = null;
+    console.log("Exiting.");
+    process.exit(0);
+});
+
+
+
+