ldt0028: Added support for LDT0-028 PZT film-based sensors

Signed-off-by: Sarah Knepper <sarah.knepper@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/ldt0028/ldt0028.h

@@ -0,0 +1,78 @@
+/*
+ * Author: Sarah Knepper <sarah.knepper@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.
+ */
+#pragma once
+
+#include <string>
+#include <mraa/aio.h>
+
+namespace upm {
+
+/**
+ * @brief LDT0-028 Piezo Vibration sensor library
+ * @defgroup ldt0028 libupm-ldt0028
+ */
+
+/**
+ * @brief C++ API for LDT0-028 PZT film-based sensors,
+ * such as the Grove Piezo Vibration sensor
+ *
+ * This file defines the LDT0028 C++ interface for libupm-ldt0028
+ *
+ * @ingroup ldt0028 aio
+ * @snippet ldt0028.cxx Interesting
+ */
+class LDT0028 {
+    public:
+        /**
+         * LDT0028 Piezo Vibration sensor constructor
+         *
+         * @param pin AIO pin where sensor is connected
+         */
+        LDT0028(unsigned int pin);
+
+        /**
+         * LDT0028 destructor
+         */
+        ~LDT0028();
+
+        /**
+         * Return name of this sensor
+         *
+         * @return the name of this sensor
+         */
+        std::string name();
+
+        /**
+         * Return one sample from this sensor
+         *
+         * @return one value from this sensor
+         */
+        int getSample();
+
+    protected:
+        std::string         m_name; //!< name of this sensor
+        mraa_aio_context    m_pin;  //!< AIO pin
+};
+
+}