local parameter handler wip

bsp_q7s/memory/LocalParameterHandler.h

@@ -0,0 +1,66 @@
+#ifndef BSP_Q7S_MEMORY_LOCALPARAMETERHANDLER_H_
+#define BSP_Q7S_MEMORY_LOCALPARAMETERHANDLER_H_
+
+#include <string>
+
+#include <mission/memory/NVMParameterBase.h>
+#include <mission/memory/SdCardMountedIF.h>
+
+/**
+ * @brief	Class to handle persistent parameters
+ *
+ * @details Use the insertValue function to add parameters
+ */
+class LocalParameterHandler : public NVMParameterBase {
+ public:
+	/**
+	 * @brief	Constructor
+	 *
+	 * @param sdRelativeName	Absolute name of json file relative to mount
+	 * 												directory	of SD card. E.g. conf/example.json
+	 * @param sdcMan	Pointer to SD card manager
+	 */
+  LocalParameterHandler(std::string sdRelativeName, SdCardMountedIF* sdcMan);
+  virtual ~LocalParameterHandler();
+
+  /**
+   * @brief Will initialize the local parameter handler
+   *
+   * @return OK if successful, otherwise error return value
+   */
+  ReturnValue_t initialize();
+
+  /**
+   * @brief Function to add parameter to json file
+   *
+   * @param key	The string to identify the parameter
+   * @param value	The value to set for this parameter
+   *
+   * @return OK if successful, otherwise error return value
+   *
+   * @details The function will add the parameter only if it is not already
+   * 					present in the json file
+   */
+  template<typename T> ReturnValue_t addParameter(std::string key, T value);
+
+ private:
+
+  // Name relative to mount point of SD card where parameters will be stored
+  std::string sdRelativeName;
+
+  SdCardMountedIF* sdcMan;
+};
+
+template<typename T> inline ReturnValue_t LocalParameterHandler::addParameter(std::string key, T value) {
+	ReturnValue_t result = insertValue(key, value);
+	if (result != returnvalue::OK) {
+		return result;
+	}
+	result = writeJsonFile();
+	if (result != returnvalue::OK) {
+		return result;
+	}
+	return returnvalue::OK;
+}
+
+#endif /* BSP_Q7S_MEMORY_LOCALPARAMETERHANDLER_H_ */