Description
I've setup my file system as follow:
#include <stdio.h>
#include <string.h>
#include <hardware/clocks.h>
#include <hardware/flash.h>
#include <pico/filesystem.h>
#include <pico/filesystem/blockdevice/flash.h>
#include <pico/filesystem/blockdevice/sd.h>
#include <pico/filesystem/filesystem/fat.h>
#include <pico/filesystem/filesystem/littlefs.h>
#include <pico/btstack_flash_bank.h>
bool fs_init(void)
{
// Don't overwrite btstack storage
size_t eof = PICO_FLASH_BANK_STORAGE_OFFSET;
size_t size = FLASH_SECTOR_SIZE * 10u;
blockdevice_t *flash = blockdevice_flash_create(eof-size, size);
filesystem_t *lfs = filesystem_littlefs_create(500, 16);
int err = fs_mount("/", lfs, flash);
if (err!=0)
{
printf("Formatting FS\n");
fs_format(lfs,flash);
err = fs_mount("/", lfs, flash);
}
printf("fs_mount: %d :%s\n", err, fs_strerror(err));
return true;
}Then I'm doing some basic tests and printing some of that file stats:
// Setup our file system
fs_init();
// Test our file system
struct stat stats;
auto fileName = "/HELLO.TXT";
if (stat(fileName, &stats) == 0)
{
printf("File size / block / blocks: %d / %d / %d\n",stats.st_size, stats.st_blksize, stats.st_blocks);
// File exists
FILE * f = fopen (fileName, "rb");
char content[64];
fread(content,1,stats.st_size,f);
fclose(f);
printf("File content: %s\n",content);
}
else
{
// File does not exists yet
FILE *fp = fopen(fileName, "w");
fprintf(fp, "Hello World!\n");
fclose(fp);
}Here is the output I get:
File size / block / blocks: 13 / 536885040 / 268614845
File content: Hello World!
Block size and block don't make sense to me. Could it be they are not correct?