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

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

examples/c/CMakeLists.txt

@@ -120,6 +120,7 @@ add_example (ds18b20)
 add_example (dfrec)
 add_example (sht1x)
 add_example (water)
+add_example (yg1006)
 
 # Custom examples
 add_custom_example (nmea_gps_i2c-example-c nmea_gps_i2c.c nmea_gps)

examples/c/yg1006.c

@@ -0,0 +1,70 @@
+/*
+ * 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.
+ */
+
+#include <unistd.h>
+#include <signal.h>
+
+#include "yg1006.h"
+#include "upm_utilities.h"
+
+int shouldRun = true;
+
+void sig_handler(int signo)
+{
+  if (signo == SIGINT)
+    shouldRun = false;
+}
+
+
+int main ()
+{
+    signal(SIGINT, sig_handler);
+
+//! [Interesting]
+    // Instantiate a YG1006 sensor on digital pin D2
+    yg1006_context sensor = yg1006_init(2);
+
+    if (!sensor)
+    {
+        printf("yg1006_init() failed.\n");
+        return(1);
+    }
+
+    while (shouldRun)
+    {
+        if (yg1006_flame_detected(sensor))
+            printf("Flame detected.\n");
+        else
+            printf("No flame detected.\n");
+
+        upm_delay(1);
+    }
+//! [Interesting]
+
+    printf("Exiting...\n");
+
+    yg1006_close(sensor);
+
+    return 0;
+}