Grove: Reverting Grove sources

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

src/groveemg/groveemg.cxx

@@ -0,0 +1,69 @@
+/*
+ * Author: Zion Orent <zorent@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.
+ */
+
+#include <iostream>
+#include <string>
+#include <stdexcept>
+
+#include "groveemg.hpp"
+
+using namespace upm;
+using namespace std;
+
+GroveEMG::GroveEMG(int pin)
+{
+    if ( !(m_aio = mraa_aio_init(pin)) )
+    {
+      throw std::invalid_argument(std::string(__FUNCTION__) +
+                                  ": mraa_aio_init() failed, invalid pin?");
+      return;
+    }
+}
+
+GroveEMG::~GroveEMG()
+{
+  mraa_aio_close(m_aio);
+}
+
+void GroveEMG::calibrate()
+{
+	int val, sum = 0;
+
+	for (int i=0; i<1100; i++)
+	{
+		val = mraa_aio_read(m_aio);
+                if (val != -1) throw std::runtime_error(std::string(__FUNCTION__) +
+                                                        ": Failed to do an aio read.");
+		sum += val;
+		usleep(1000);
+	}
+	sum /= 1100;
+	cout << "Static analog data = " << sum << endl;
+}
+
+int GroveEMG::value()
+{
+	int val = mraa_aio_read(m_aio);
+	return val;
+}