guvas12d: Initial implementation

jrvandr: removing unnecessary mraa_init()

This module implements support for the Grove UV sensor (guvas12d).

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: John Van Drasek <john.r.van.drasek@intel.com>

src/guvas12d/CMakeLists.txt

@@ -0,0 +1,5 @@
+set (libname "guvas12d")
+set (libdescription "upm guvas12d UV sensor module")
+set (module_src ${libname}.cxx)
+set (module_h ${libname}.h)
+upm_module_init()

src/guvas12d/guvas12d.cxx

@@ -0,0 +1,62 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.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 <iostream>
+
+#include "guvas12d.h"
+
+using namespace upm;
+using namespace std;
+
+GUVAS12D::GUVAS12D(int pin)
+{
+  if ( !(m_aio = mraa_aio_init(pin)) )
+    {
+      cerr << __FUNCTION__ << ": mraa_aio_init() failed" << endl;
+      return;
+    }
+}
+
+GUVAS12D::~GUVAS12D()
+{
+  mraa_aio_close(m_aio);
+}
+
+float GUVAS12D::value(float aref, unsigned int samples)
+{
+  int val;
+  unsigned long sum = 0;
+
+  for (int i=0; i<samples; i++)
+    {
+      val = mraa_aio_read(m_aio);
+      sum += val;
+      usleep(2000);
+    }
+
+  sum = sum / samples;
+  float volts = (float)sum * aref / 1024.0;
+
+  return volts;
+}

src/guvas12d/guvas12d.h

@@ -0,0 +1,65 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.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.
+ */
+#pragma once
+
+#include <string>
+#include <mraa/aio.h>
+
+namespace upm {
+
+  /**
+   * @brief C++ API for the GUVAS12D UV sensor module
+   *
+   * UPM module for the GUVAS12D UV Sensor
+   *
+   * @ingroup grove analog
+   * @snippet guvas12d.cxx Interesting
+   */
+  class GUVAS12D {
+  public:
+    /**
+     * GUVAS12D sensor constructor
+     *
+     * @param pin analog pin to use
+     */
+    GUVAS12D(int pin);
+    /**
+     * GUVAS12D Destructor
+     */
+    ~GUVAS12D();
+    /**
+     * Get the averaged voltage value from the sensor
+     *
+     * @param aref the reference voltage in use (5.0 or 3.3 usually)
+     * @param samples number of samples to average over
+     * @return the averaged voltage reading
+     */
+    float value(float aref, unsigned int samples);
+
+  private:
+    mraa_aio_context m_aio;
+  };
+}
+
+

src/guvas12d/jsupm_guvas12d.i

@@ -0,0 +1,8 @@
+%module jsupm_guvas12d
+%include "../upm.i"
+
+%{
+    #include "guvas12d.h"
+%}
+
+%include "guvas12d.h"

src/guvas12d/pyupm_guvas12d.i

@@ -0,0 +1,9 @@
+%module pyupm_guvas12d
+%include "../upm.i"
+
+%feature("autodoc", "3");
+
+%include "guvas12d.h"
+%{
+    #include "guvas12d.h"
+%}