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This commit is contained in:
Kamil Kowalczyk
2026-04-24 01:54:48 +02:00
parent 34f7809a2d
commit c8fb575bdd
208 changed files with 6310 additions and 6339 deletions
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84
libu/libfat.c
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@@ -8,9 +8,9 @@
#include <string.h>
#include <system.h>
static void translate (size_t fs_block, size_t fs_block_count, size_t fs_block_size,
size_t device_sector_size, size_t* out_phys_sector,
size_t* out_sector_count) {
static void translate(size_t fs_block, size_t fs_block_count, size_t fs_block_size,
size_t device_sector_size, size_t* out_phys_sector,
size_t* out_sector_count) {
size_t ratio = fs_block_size / device_sector_size;
if (out_phys_sector != NULL)
@@ -20,7 +20,33 @@ static void translate (size_t fs_block, size_t fs_block_count, size_t fs_block_s
*out_sector_count = fs_block_count * ratio;
}
static int fat_diskio_read (struct fatfs_ctx* ctx, uint32_t sector, uint8_t* buffer,
static int fat_diskio_read(struct fatfs_ctx* ctx, uint32_t sector, uint8_t* buffer,
uint32_t sector_count) {
(void)ctx;
int ret;
size_t sector_size;
size_t phys_sector, phys_sector_count;
if (sector_count == 0)
return 0;
if ((ret = device_do(ctx->device_name, XDRV_GET_SECTOR_SIZE, &sector_size, NULL, NULL, NULL)) < 0)
return 0;
translate(sector, sector_count, FAT_SECTOR_SIZE, sector_size, &phys_sector, &phys_sector_count);
if ((ret = device_do(ctx->device_name, XDRV_READ, &phys_sector, &phys_sector_count, buffer,
NULL)) < 0)
return 0;
if (ctx->update_cb != NULL)
ctx->update_cb(phys_sector, phys_sector_count);
return 1;
}
static int fat_diskio_write(struct fatfs_ctx* ctx, uint32_t sector, uint8_t* buffer,
uint32_t sector_count) {
(void)ctx;
@@ -31,61 +57,33 @@ static int fat_diskio_read (struct fatfs_ctx* ctx, uint32_t sector, uint8_t* buf
if (sector_count == 0)
return 0;
if ((ret = device_do (ctx->device_name, XDRV_GET_SECTOR_SIZE, &sector_size, NULL, NULL, NULL)) <
0)
if ((ret = device_do(ctx->device_name, XDRV_GET_SECTOR_SIZE, &sector_size, NULL, NULL, NULL)) < 0)
return 0;
translate (sector, sector_count, FAT_SECTOR_SIZE, sector_size, &phys_sector, &phys_sector_count);
translate(sector, sector_count, FAT_SECTOR_SIZE, sector_size, &phys_sector, &phys_sector_count);
if ((ret = device_do (ctx->device_name, XDRV_READ, &phys_sector, &phys_sector_count, buffer,
NULL)) < 0)
if ((ret = device_do(ctx->device_name, XDRV_WRITE, &phys_sector, &phys_sector_count, buffer,
NULL)) < 0)
return 0;
if (ctx->update_cb != NULL)
ctx->update_cb (phys_sector, phys_sector_count);
ctx->update_cb(phys_sector, phys_sector_count);
return 1;
}
static int fat_diskio_write (struct fatfs_ctx* ctx, uint32_t sector, uint8_t* buffer,
uint32_t sector_count) {
(void)ctx;
int ret;
size_t sector_size;
size_t phys_sector, phys_sector_count;
if (sector_count == 0)
return 0;
if ((ret = device_do (ctx->device_name, XDRV_GET_SECTOR_SIZE, &sector_size, NULL, NULL, NULL)) <
0)
return 0;
translate (sector, sector_count, FAT_SECTOR_SIZE, sector_size, &phys_sector, &phys_sector_count);
if ((ret = device_do (ctx->device_name, XDRV_WRITE, &phys_sector, &phys_sector_count, buffer,
NULL)) < 0)
return 0;
if (ctx->update_cb != NULL)
ctx->update_cb (phys_sector, phys_sector_count);
return 1;
}
int fat_format_drive (struct fatfs_ctx* ctx, const char* device_key, int fs_type) {
memcpy (ctx->device_name, device_key, strlen (device_key));
int fat_format_drive(struct fatfs_ctx* ctx, const char* device_key, int fs_type) {
memcpy(ctx->device_name, device_key, strlen(device_key));
int r = -1;
size_t total_size = 0;
if ((r = device_do (device_key, XDRV_GET_SIZE, &total_size, NULL, NULL, NULL)) < 0)
if ((r = device_do(device_key, XDRV_GET_SIZE, &total_size, NULL, NULL, NULL)) < 0)
return r;
size_t sectors = ((total_size + FAT_SECTOR_SIZE) / FAT_SECTOR_SIZE);
fl_init (ctx);
fl_init(ctx);
ctx->_fs.disk_io.read_media = &fat_diskio_read;
ctx->_fs.disk_io.write_media = &fat_diskio_write;
@@ -93,10 +91,10 @@ int fat_format_drive (struct fatfs_ctx* ctx, const char* device_key, int fs_type
switch (fs_type) {
case FS_FAT16:
r = fatfs_format_fat16 (ctx, &ctx->_fs, sectors, "mop3 fat16");
r = fatfs_format_fat16(ctx, &ctx->_fs, sectors, "mop3 fat16");
break;
case FS_FAT32:
r = fatfs_format_fat32 (ctx, &ctx->_fs, sectors, "mop3 fat32");
r = fatfs_format_fat32(ctx, &ctx->_fs, sectors, "mop3 fat32");
break;
default:
break;