flex: initial implementation

Implements the flex analog sensor.  See
http://bildr.org/2012/11/flex-sensor-arduino/
for wiring instructions.

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

src/flex/CMakeLists.txt

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

src/flex/flex.cxx

@@ -0,0 +1,49 @@
+/*
+ * 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 "flex.h"
+
+using namespace upm;
+using namespace std;
+
+Flex::Flex(int pin)
+{
+  if ( !(m_aio = mraa_aio_init(pin)) )
+    {
+      cerr << __FUNCTION__ << ": mraa_aio_init() failed" << endl;
+      return;
+    }
+}
+
+Flex::~Flex()
+{
+  mraa_aio_close(m_aio);
+}
+
+int Flex::value()
+{
+  return mraa_aio_read(m_aio);
+}

src/flex/flex.h

@@ -0,0 +1,71 @@
+/*
+ * 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.
+ */
+#pragma once
+
+#include <string>
+#include <mraa/aio.h>
+
+namespace upm {
+
+  /**
+   * @brief UPM module for the Spectra Symbol Flex sensor
+   * @defgroup flex libupm-flex
+   * @ingroup sparkfun analog flex
+   */
+
+  /**
+   * @sensor flex
+   * @library flex
+   * @name Spectra Symbol Flex sensor
+   * @category flex
+   * @manufacturer sparkfun
+   * @connection analog
+   *
+   * @brief C++ API for the Spectra Symbol Flex sensor
+   *
+   * @snippet flex.cxx Interesting
+   */
+  class Flex {
+  public:
+    /**
+     * Flex sensor constructor
+     *
+     * @param pin analog pin to use
+     */
+    Flex(int pin);
+    /**
+     * Flex Destructor
+     */
+    ~Flex();
+    /**
+     * @return the analog flex value
+     */
+    int value();
+
+  private:
+    mraa_aio_context m_aio;
+  };
+}
+
+

src/flex/jsupm_flex.i

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+%module jsupm_flex
+%include "../upm.i"
+
+%{
+    #include "flex.h"
+%}
+
+%include "flex.h"

src/flex/pyupm_flex.i

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