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#include <fs_util.h>
#include <ff.h>
#include <stdint.h>
#include <string.h>
FATFS FatFs; /* File system object for logical drive */
FS_USAGE FsUsage;
int fs_info(FATFS *fs)
{
memcpy(fs, &FatFs, sizeof(FATFS));
return 0;
}
int fs_usage(FATFS *fs, FS_USAGE *fs_usage)
{
FRESULT res;
DWORD tot_clust, fre_clust, sec_size;
res = f_getfree("/", &fre_clust, &fs);
if(res != FR_OK)
return -res;
// sectore size = sectors per cluster * sector size
#if FF_MAX_SS == FF_MIN_SS
sec_size = fs->csize * FF_MAX_SS;
#else
sec_size = fs->csize * fs.ssize;
#endif
// total/free sectors * sectore size
tot_clust = fs->n_fatent - 2;
fs_usage->total = tot_clust * sec_size; //FatFs.ssize;
fs_usage->free = fre_clust * sec_size; //FatFs.ssize;
return 0;
}
int fs_read_file(char * filename, void * data, int len){
FIL file;
UINT readbytes;
int res;
res=f_open(&file, filename, FA_OPEN_EXISTING|FA_READ);
if(res){
return -1;
};
res = f_read(&file, data, len, &readbytes);
if(res){
return -1;
};
f_close(&file);
return readbytes;
}
int fs_read_text_file(char * filename, char * data, int len){
int readbytes;
if(len<1) return -1;
readbytes=fs_read_file(filename,data,len-1);
if(readbytes<0){
data[0]=0;
return readbytes;
};
data[readbytes]=0;
while(readbytes>0 && data[readbytes-1]<0x20){
data[--readbytes]=0;
};
return readbytes;
}
int fs_write_file(char * filename, const void * data, int len){
FIL file;
UINT writebytes;
int res;
res=f_open(&file, filename, FA_CREATE_ALWAYS|FA_WRITE);
if(res){
return -res;
};
res = f_write(&file, data, len, &writebytes);
if(res){
return -res;
};
f_close(&file);
return writebytes;
}
int fs_get_file_size(char * filename){
FILINFO finfo;
int res;
/// XXX: Untested
res=f_stat(filename, &finfo);
if(res){
return -1;
}
return finfo.fsize;
}