mraa: add common hpp

* Wraps some of the C functions that libmraa has into the mraa namespace
* Not included in swig bindings as of yet

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>

api/mraa.hpp

@@ -24,7 +24,7 @@
 
 #pragma once
 
-#include "mraa/common.h"
+#include "mraa/common.hpp"
 #include "mraa/pwm.hpp"
 #include "mraa/aio.hpp"
 #include "mraa/gpio.hpp"

api/mraa/common.hpp

@@ -0,0 +1,95 @@
+/*
+ * Author: Thomas Ingleby <thomas.c.ingleby@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 "common.h"
+#include <string>
+
+namespace mraa {
+
+/**
+ * @brief C++ API to common functions of MRAA
+ *
+ * This file defines the C++ interface for libmraa common functions
+ */
+
+/**
+ * Get libmraa version.
+ *
+ * @return libmraa version (e.g. v0.4.0-20-gb408207)
+*/
+std::string getVersion()
+{
+    std::string ret = mraa_get_version();
+    return ret;
+}
+
+/**
+  * This function attempts to set the mraa process to a given priority and the
+ * scheduler to SCHED_RR. Highest * priority is typically 99 and minimum is 0.
+ * This function * will set to MAX if * priority is > MAX. Function will return
+ * -1 on failure.
+ *
+ * @param priority Value from typically 0 to 99
+ * @return The priority value set
+*/
+int setPriority(const unsigned int priority)
+{
+    return mraa_set_priority(priority);
+}
+
+/**
+ * Get platform type, board must be initialised.
+ *
+ * @return mraa_platform_t Platform type enum
+ */
+mraa_platform_t getPlatformType()
+{
+    return mraa_get_platform_type();
+}
+
+/**
+ * Print a textual representation of the mraa_result_t
+ *
+ * @param result the result to print
+ */
+void printError(mraa_result_t result)
+{
+    mraa_result_print(result);
+}
+
+/**
+ * Checks if a pin is able to use the passed in mode.
+ *
+ * @param pin Physical Pin to be checked.
+ * @param mode the mode to be tested.
+ * @return boolean if the mode is supported, 0=false.
+ */
+bool pinModeTest(int pin, mraa_pinmodes_t mode)
+{
+    return (bool) mraa_pin_mode_test(pin,mode);
+}
+
+}