39 lines
958 B
C
39 lines
958 B
C
#ifndef _FAT16_H
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#define _FAT16_H
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#include <types.h>
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#define FAT16_MAX_FILENAME 256
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#define FAT16_ATTR_DIRECTORY 0x10
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typedef struct {
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uint8_t drive;
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uint32_t fat_start;
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uint32_t root_dir_start;
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uint32_t data_start;
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uint16_t bytes_per_sector;
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uint8_t sectors_per_cluster;
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uint16_t root_entry_count;
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uint32_t current_dir_cluster;
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} fat16_t;
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typedef struct {
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char name[FAT16_MAX_FILENAME];
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uint8_t attr;
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uint32_t cluster;
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uint32_t size;
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} fat16_dir_entry_t;
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int32_t fat16_init(uint8_t drive);
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uint32_t cluster_to_lba(uint16_t cluster);
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uint16_t fat16_get_fat_entry(uint16_t cluster);
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uint16_t fat16_alloc_cluster(void);
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int32_t fat16_list_dir(fat16_dir_entry_t* entries, size_t max_entries);
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int32_t fat16_change_dir(const char* dirname);
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int32_t fat16_read_file(const char* filename, void* buffer, size_t max_size);
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int32_t fat16_write_file(const char* filename, const void* data, size_t size);
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#endif
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