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66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
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MemoryCard - a slightly more friendly wrapper for sdfatlib
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This library aims to expose a subset of SD card functionality
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in the form of a higher level "wrapper" object.
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License: GNU General Public License V3
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(Because sdfatlib is licensed with this.)
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(C) Copyright 2010 SparkFun Electronics
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*/
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#ifndef __MEMORY_CARD_DEVICE_H__
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#define __MEMORY_CARD_DEVICE_H__
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#include <WProgram.h>
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#include <SdFat.h>
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class MemoryCardDevice {
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private:
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// These are required for initialisation and use of sdfatlib
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Sd2Card card;
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SdVolume volume;
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SdFile root;
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public:
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// This needs to be called to set up the connection to the memory card
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// before other methods are used.
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void begin();
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// Open the specified file/directory with the supplied mode (e.g. read or
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// write, etc). Once opened the file can be accessed via the
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// `MemoryCard.file` field which is a standard `sdfatlib` file object.
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boolean open(char *filename, boolean write = false, boolean append = true);
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// Close an opened file object.
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boolean close();
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// Methods to determine if the requested file path exists.
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boolean exists(char *filepath);
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boolean exists(char *filepath, SdFile& parentDir);
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// Create the requested directory heirarchy--if intermediate directories
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// do not exist they will be created.
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boolean makeDir(char *filepath);
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// At the moment this is how a developer interacts with a file they've
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// opened. It's unclear whether it would be better to make
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// `MemoryCard` provide a `Stream` interface instead.
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SdFile file; // TODO: Don't make this public?
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// This is used to determine the mode used to open a file
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// it's here because it's the easiest place to pass the
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// information through the directory walking function. But
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// it's probably not the best place for it.
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// It shouldn't be set directly--it is set via the parameters to `open`.
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int fileOpenMode; // TODO: Don't make this public?
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};
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#endif
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