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Look through files without trying too hard

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This commit is contained in:
Byron Lathi
2023-12-05 08:08:20 -08:00
parent 2859055f98
commit 946234381d
4 changed files with 32 additions and 8 deletions
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25
sw/kernel/filesystems/fat32_c.c
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@@ -1,19 +1,23 @@
#include "fat32.h"
#include <devices/sd_card.h>
#include <conio.h>
#include <stdint.h>
#include <string.h>
uint8_t fat32_read_cluster(uint32_t cluster, void* buf) {
int8_t fat32_read_cluster(uint32_t cluster, void* buf) {
uint8_t error;
uint32_t addr = (cluster - 2) + data_start_sector;
SD_readSingleBlock(addr, buf, &error);
return error;
}
uint8_t fat32_get_cluster_by_name(char* name, struct fat32_directory_entry* dentry) {
int8_t fat32_get_cluster_by_name(char* name, struct fat32_directory_entry* dentry) {
struct fat32_directory_entry* local_entry;
int i = 0;
cprintf("Sectors per cluster: %hhx\n", sectors_per_cluster);
fat32_read_cluster(root_cluster, sd_buf);
for (i = 0; i < 16; i++){
local_entry = sd_buf + i*32;
@@ -21,6 +25,19 @@ uint8_t fat32_get_cluster_by_name(char* name, struct fat32_directory_entry* dent
continue;
}
cprintf("Name: %.11s\n", local_entry->file_name, local_entry->file_ext);
cprintf("attr1: %x\n", local_entry->attr1);
if (!strncmp(local_entry->file_name, name, 11)) {
i = -1;
break;
}
}
if (i != -1) {
cprintf("Failed to find file.\n");
return -1;
}
cprintf("Found file!\n");
cprintf("attr1: %x\n", local_entry->attr1);
cprintf("cluster: %x %x\n", local_entry->cluster_high, local_entry->cluster_low);
cprintf("File Size: %lx\n", local_entry->file_size);
}