yg1006: add C driver and example, C++ wraps C driver

Signed-off-by: Jon Trulson <jtrulson@ics.com>

src/yg1006/yg1006.h

@@ -0,0 +1,74 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2016 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 <stdlib.h>
+#include <stdio.h>
+#include <upm.h>
+#include <mraa/gpio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    /**
+     * @brief YG1006 Flame Sensor
+     *
+     *   UPM module for the YG1006 flame sensor. It detects a flame or any
+     *   other light source in the 760-1,100 nm wavelength range.
+     *
+     * @snippet yg1006.cxx Interesting
+     */
+
+    /**
+     * Device context
+     */
+    typedef struct _yg1006_context {
+        mraa_gpio_context        gpio;
+    } *yg1006_context;
+
+    /**
+     * YG1006 initializer
+     *
+     * @param pin Digital pin to use
+     * @return an initialized device context on success, NULL on error.
+     */
+    yg1006_context yg1006_init(unsigned int pin);
+
+    /**
+     * YG1006 close function
+     */
+    void yg1006_close(yg1006_context dev);
+
+    /**
+     * Determines whether a flame has been detected
+     *
+     * @return true if a flame or another comparable light source has
+     * been detected
+     */
+    bool yg1006_flame_detected(const yg1006_context dev);
+
+#ifdef __cplusplus
+}
+#endif