bool SDCardFile::open(bool create) {
if (!exists) {
if (create) {
SDCardEntry parentDir(dir);
if (!parentDir.exists)
return false;
fat_dir_struct *dd = fat_open_dir(SDCard.fs, &parentDir.dir_entry);
if (!fat_create_file(dd, name, &dir_entry)
&& strcmp(name, dir_entry.long_name)) {
fat_close_dir(dd);
return false;
}
fat_close_dir(dd);
} else {
return false;
}
}
fd = fat_open_file(SDCard.fs, &dir_entry);
if (fd != NULL)
return true;
else
return false;
}
struct fat_file_struct* open_file_in_dir(struct fat_fs_struct* fs, struct fat_dir_struct* dd, const char* name)
{
struct fat_dir_entry_struct file_entry;
if(!find_file_in_dir(fs, dd, name, &file_entry))
return 0;
return fat_open_file(fs, &file_entry);
}
struct fat_file_struct* FatFsClass::open(const char *file_name)
{
struct fat_dir_entry_struct directory;
if(find_file_in_dir(file_name, &directory)){
return fat_open_file(_fs, &directory);
}
return 0;
}
bool openFile(const char* name, struct fat_file_struct** file)
{
struct fat_dir_entry_struct fileEntry;
if(!findFileInDir(name, &fileEntry))
{
return false;
}
*file = fat_open_file(fs, &fileEntry);
return true;
}
uint8_t open_file_in_dir(struct fat_fs_struct* fs, struct fat_dir_struct* dd, const char* name,
File *file)
{
struct fat_dir_entry_struct file_entry;
if(!find_file_in_dir(fs, dd, name, &file_entry))
{
//Serial.println("File not found");
return 0;
}
*file = fat_open_file(fs, &file_entry);
return 1;
}
void load_rom(file_descr_t *entry)
{
file_t file;
int i;
DWORD size;
console_clear();
console_puts("Loading ");
for (i=0; i<8; i++) {
console_putc(entry->name[i]);
}
console_putc('.');
for (i=8; i<11; i++) {
console_putc(entry->name[i]);
}
console_puts("\n\n");
fat_open_file(&file, entry->cluster);
size = 0;
while (1) {
UBYTE* data;
if ((size&0x3fff)==0) {
// switch page 1
*((UBYTE*)0xffff) = (size>>14)&0xff;
}
// write to page 2
data = 0x8000+(size&0x3fff);
data = fat_load_file_sector(&file,data);
if (data==0) {
console_puts("Error while reading file\n");
} else if (data==FAT_EOF) {
console_gotoxy(0,2);
return;
} else {
// process data
size += 0x200;
if ((size)%16384 == 0)
console_puts(".");
//console_gotoxy(0,3);
//console_print_dword(size);
//console_puts(" bytes loaded");
}
}
int syscall_file_open(char *filename, int mode)
{
return fat_open_file(filename, mode);
}