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Add source code of the firmware for the IO Board

Pawel Jablonski authored on 05/06/2023 17:01:27
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fw/src/fs.h
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+/*
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+ * Author: Pawel Jablonski
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+ * E-mail: pj@xirx.net
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+ * WWW: xirx.net
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+ * GIT: git.xirx.net
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+ *
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+ * License: You can use this code however you like
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+ * but leave information about the original author.
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+ * Code is free for non-commercial and commercial use.
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+ */
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+
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+#ifndef _FS_H
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+#define _FS_H
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+
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+#include "type.h"
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+
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+#define FS_NAME_MAX_LENGTH 12 //!< Maximum name length of the file
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+#define FS_PATH_MAX_LENGTH ((FS_NAME_MAX_LENGTH * 2) + 1) //!< Maximum path length to the file
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+
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+#define FS_BLOCK_SIZE 256 //!<  Virtual block size available to address by communication bus between motherboard and CPU
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+
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+#define FS_DIR_ENTRY_SIZE 16 //!< Size of the header with information about file
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+#define FS_DIR_SIZE_FIELD_SIZE 2 //!< Size of the size field in the header
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+#define FS_DIR_MAX_QUANTITY 64 //!< Maximum quantity of files in directory
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+
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+//! This struct contains a name of the file
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+struct FSName
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+{
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+	unsigned char data[FS_NAME_MAX_LENGTH + 1]; //!< Name of the file
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+};
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+
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+//! This struct contains a size of the file
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+struct FSSize
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+{
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+	unsigned char low; //!< Lower byte of the size
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+	unsigned char high; //!< Higher byte of the size
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+};
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+
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+//! This struct contains virtual block data
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+struct FSBlock
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+{
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+	unsigned char data[FS_BLOCK_SIZE]; //!< Virtual block data
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+};
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+
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+void fsInit(void);
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+
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+bool fsOpen(const char *dirName, const struct FSName *fileName, struct FSSize *size);
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+bool fsList(const char *dirName, struct FSSize *size);
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+
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+void fsReadBlock(struct FSBlock *block, int number);
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+
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+#endif