91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
#ifndef TMTCPACKET_PUS_TCPACKETSTORED_H_
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#define TMTCPACKET_PUS_TCPACKETSTORED_H_
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#include "TcPacketStoredIF.h"
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#include "../../../storagemanager/StorageManagerIF.h"
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/**
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* This class generates a ECSS PUS Telecommand packet within a given
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* intermediate storage.
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* As most packets are passed between tasks with the help of a storage
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* anyway, it seems logical to create a Packet-In-Storage access class
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* which saves the user almost all storage handling operation.
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* Packets can both be newly created with the class and be "linked" to
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* packets in a store with the help of a storeAddress.
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* @ingroup tmtcpackets
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*/
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class TcPacketStoredBase: public TcPacketStoredIF {
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public:
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/**
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* This is a default constructor which does not set the data pointer to initialize
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* with an empty cached store address
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*/
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TcPacketStoredBase();
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/**
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* Constructor to set to an existing store address.
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* @param setAddress
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*/
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TcPacketStoredBase(store_address_t setAddress);
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/**
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* Another constructor to create a TcPacket from a raw packet stream.
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* Takes the data and adds it unchecked to the TcStore.
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* @param data Pointer to the complete TC Space Packet.
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* @param Size size of the packet.
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*/
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TcPacketStoredBase(const uint8_t* data, uint32_t size);
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virtual~ TcPacketStoredBase();
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/**
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* Getter function for the raw data.
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* @param dataPtr [out] Pointer to the data pointer to set
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* @param dataSize [out] Address of size to set.
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* @return -@c RETURN_OK if data was retrieved successfully.
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*/
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ReturnValue_t getData(const uint8_t ** dataPtr, size_t* dataSize) override;
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void setStoreAddress(store_address_t setAddress) override;
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store_address_t getStoreAddress() override;
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/**
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* With this call, the packet is deleted.
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* It removes itself from the store and sets its data pointer to NULL.
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* @return returncode from deleting the data.
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*/
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virtual ReturnValue_t deletePacket() = 0;
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/**
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* This method performs a size check.
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* It reads the stored size and compares it with the size entered in the
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* packet header. This class is the optimal place for such a check as it
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* has access to both the header data and the store.
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* @return true if size is correct, false if packet is not registered in
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* store or size is incorrect.
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*/
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virtual bool isSizeCorrect() = 0;
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protected:
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/**
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* This is a pointer to the store all instances of the class use.
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* If the store is not yet set (i.e. @c store is NULL), every constructor
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* call tries to set it and throws an error message in case of failures.
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* The default store is objects::TC_STORE.
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*/
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static StorageManagerIF* store;
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/**
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* The address where the packet data of the object instance is stored.
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*/
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store_address_t storeAddress;
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/**
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* A helper method to check if a store is assigned to the class.
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* If not, the method tries to retrieve the store from the global
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* ObjectManager.
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* @return @li @c true if the store is linked or could be created.
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* @li @c false otherwise.
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*/
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bool checkAndSetStore();
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};
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#endif /* TMTCPACKET_PUS_TcPacketStoredBase_H_ */
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