53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#ifndef _FAT32_H
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#define _FAT32_H
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#include <stdint.h>
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#include <stdio.h>
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void fat32_init();
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extern uint32_t root_cluster;
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extern uint16_t fat_start_sector;
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extern uint32_t data_start_sector;
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extern uint32_t fat_size;
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extern uint8_t* sd_buf;
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extern uint8_t sectors_per_cluster;
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struct fat32_directory_entry {
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char file_name[8];
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char file_ext[3];
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uint8_t attr1;
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uint8_t attr2;
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uint8_t create_time_10ms;
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uint16_t create_time;
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uint16_t create_date;
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uint16_t access_date;
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uint16_t cluster_high;
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uint16_t modified_time;
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uint16_t modified_date;
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uint16_t cluster_low;
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uint32_t file_size;
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};
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struct lfn_entry {
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uint8_t sequence_number;
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uint16_t name_0[5];
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uint8_t attributes;
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uint8_t type;
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uint8_t checksum;
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uint16_t name_1[6];
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uint16_t cluster_low;
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uint16_t name_2[2];
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};
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int8_t fat32_get_cluster_by_name(const char* name, struct fat32_directory_entry* dentry);
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int8_t fat32_read_cluster(uint32_t cluster, void* buf);
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uint32_t fat32_next_cluster(uint32_t cluster);
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int8_t fat32_file_open(const char* filename);
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int8_t fat32_file_read(int8_t fd, void* buf, size_t nbytes);
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int8_t fat32_file_write(int8_t fd, const void* buf, size_t nbytes);
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int8_t fat32_file_close(int8_t fd);
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#endif
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