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107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
#ifndef BSP_Q7S_MEMORY_LOCALPARAMETERHANDLER_H_
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#define BSP_Q7S_MEMORY_LOCALPARAMETERHANDLER_H_
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#include <mission/memory/NVMParameterBase.h>
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#include <mission/memory/SdCardMountedIF.h>
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#include <string>
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/**
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* @brief Class to handle persistent parameters
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*
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*/
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class LocalParameterHandler : public NVMParameterBase {
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public:
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static constexpr uint8_t INTERFACE_ID = CLASS_ID::LOCAL_PARAM_HANDLER;
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static constexpr ReturnValue_t SD_NOT_READY = returnvalue::makeCode(INTERFACE_ID, 0);
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/**
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* @brief Constructor
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*
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* @param sdRelativeName Absolute name of json file relative to mount
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* directory of SD card.
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* E.g. conf/example.json
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* @param sdcMan Pointer to SD card manager
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*/
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LocalParameterHandler(std::string sdRelativeName, SdCardMountedIF* sdcMan);
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virtual ~LocalParameterHandler();
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/**
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* @brief Will initialize the local parameter handler
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*
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* @return OK if successful, otherwise error return value
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*/
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ReturnValue_t initialize();
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/**
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* @brief Function to add parameter to json file. If the json file does
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* not yet exist it will be created here.
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*
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* @param key The string to identify the parameter
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* @param value The value to set for this parameter
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*
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* @return OK if successful, otherwise error return value
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*
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* @details The function will add the parameter only if it is not already
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* present in the json file
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*/
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template <typename T>
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ReturnValue_t addParameter(std::string key, T value);
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/**
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* @brief Function will update a parameter which already exists in the json
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* file
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*
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* @param key The unique string to identify the parameter to update
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* @param value The new new value to set
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*
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* @return OK if successful, otherwise error return value
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*/
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template <typename T>
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ReturnValue_t updateParameter(std::string key, T value);
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private:
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// Name relative to mount point of SD card where parameters will be stored
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std::string sdRelativeName;
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SdCardMountedIF* sdcMan;
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virtual ReturnValue_t writeJsonFile();
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/**
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* @brief This function sets the name of the json file dependent on the
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* currently active SD card
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*
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* @return OK if successful, otherwise error return value
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*/
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ReturnValue_t updateFullName();
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};
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template <typename T>
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inline ReturnValue_t LocalParameterHandler::addParameter(std::string key, T value) {
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ReturnValue_t result = insertValue(key, value);
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if (result != returnvalue::OK) {
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return result;
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}
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result = writeJsonFile();
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if (result != returnvalue::OK) {
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return result;
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}
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return returnvalue::OK;
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}
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template <typename T>
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inline ReturnValue_t LocalParameterHandler::updateParameter(std::string key, T value) {
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ReturnValue_t result = setValue(key, value);
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if (result != returnvalue::OK) {
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return result;
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}
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result = writeJsonFile();
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if (result != returnvalue::OK) {
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return result;
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}
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return returnvalue::OK;
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}
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#endif /* BSP_Q7S_MEMORY_LOCALPARAMETERHANDLER_H_ */
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