Rotary: Added C source

Added C source for rotary angle sensor

    * Renamed all files from groverrotary to rotary
    * Replaced all instances of groverrotary with rotary
    * Added C source for rotary angle sensor
    * Updated all CMake files

Signed-off-by: Sisinty Sasmita Patra <sisinty.s.patra@intel.com>

examples/c++/rotary.cxx

@@ -0,0 +1,57 @@
+/*
+ * Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
+ * Copyright (c) 2014 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.
+ */
+
+#include <unistd.h>
+#include <iostream>
+#include <iomanip>
+#include "grove.hpp"
+
+using namespace std;
+
+int main ()
+{
+//! [Interesting]
+    // Instantiate a rotary sensor on analog pin A0
+    upm::Rotary* knob = new upm::Rotary(0);
+
+    // Print sensor name to confirm it initialized properly
+    cout << knob->name() << endl;
+
+    while(true) {
+        float abs_value = knob->abs_value(); // Absolute raw value
+        float abs_deg = knob->abs_deg();     // Absolute degrees
+        float abs_rad = knob->abs_rad();     // Absolute radians
+        float rel_value = knob->rel_value(); // Relative raw value
+        float rel_deg = knob->rel_deg();     // Relative degrees
+        float rel_rad = knob->rel_rad();     // Relative radians
+
+        fprintf(stdout, "Absolute: %4d raw %5.2f deg = %3.2f rad Relative: %4d raw %5.2f deg %3.2f rad\n",
+                (int16_t)abs_value, abs_deg, abs_rad, (int16_t)rel_value, rel_deg, rel_rad);
+
+        usleep(2500000); // Sleep for 2.5s
+    }
+//! [Interesting]
+    delete knob;
+    return 0;
+}