static void FileExistsExample()
{
FILINFO fno = new FILINFO();
res = Ff.Current.f_stat("/sub1/File2.txt", ref fno);
switch (res)
{
case Ff.FRESULT.FR_OK:
Debug.WriteLine($"Size: {fno.fsize}");
Debug.WriteLine(String.Format("Timestamp: {0}/{1}/{2}, {3}:{4}",
(fno.fdate >> 9) + 1980, fno.fdate >> 5 & 15, fno.fdate & 31,
fno.ftime >> 11, fno.ftime >> 5 & 63));
Debug.WriteLine(String.Format("Attributes: {0}{1}{2}{3}{4}",
(fno.fattrib & AM_DIR) > 0 ? 'D' : '-',
(fno.fattrib & AM_RDO) > 0 ? 'R' : '-',
(fno.fattrib & AM_HID) > 0 ? 'H' : '-',
(fno.fattrib & AM_SYS) > 0 ? 'S' : '-',
(fno.fattrib & AM_ARC) > 0 ? 'A' : '-'));
break;
case Ff.FRESULT.FR_NO_FILE:
Debug.WriteLine("File does not exist");
break;
default:
Debug.WriteLine($"An error occured. {res.ToString()}");
break;
}
}
static void MountDrive()
{
res = Ff.Current.f_mount(ref fs, "", 1); /* Give a work area to the default drive */
res.ThrowIfError();
Debug.WriteLine("Drive successfully mounted");
}
static void DeleteFileExample()
{
res = Ff.Current.f_unlink("/sub1/File2.txt"); /* Give a work area to the default drive */
res.ThrowIfError();
Debug.WriteLine("File successfully deleted");
}
static void RenameFileExample()
{
/* Rename an object in the default drive */
res = Ff.Current.f_rename("/sub1/File1.txt", "/sub1/File2.txt");
res.ThrowIfError();
Debug.WriteLine("File successfully renamed");
}
static void ListDirectoryExample()
{
res = Ff.Current.f_mount(ref fs, "", 1);
res.ThrowIfError();
res = Scan_Files("/");
res.ThrowIfError();
Debug.WriteLine("Directories successfully listed");
}
static void ReadFileExample()
{
if (Ff.Current.f_open(ref Fil, "/sub1/File1.txt", FA_READ) == Ff.FRESULT.FR_OK)
{ /* Create a file */
var newPayload = new byte[5000];
res = Ff.Current.f_read(ref Fil, ref newPayload, 5000, ref bw); /* Read data from file */
res.ThrowIfError();
var msg = Encoding.UTF8.GetString(newPayload, 0, (int)bw);
Debug.WriteLine($"{msg}");
res = Ff.Current.f_close(ref Fil); /* Close the file */
res.ThrowIfError();
}
Debug.WriteLine("File successfully read");
}
static void CreateFileExample()
{
if ((res = Ff.Current.f_open(ref Fil, "/sub1/File1.txt", FA_WRITE | FA_CREATE_ALWAYS)) == Ff.FRESULT.FR_OK)
{ /* Create a file */
Random rnd = new Random();
var payload = $"File contents is: It works ({rnd.Next()})!".ToByteArray();
res = Ff.Current.f_write(ref Fil, payload, (uint)payload.Length, ref bw); /* Write data to the file */
res.ThrowIfError();
res = Ff.Current.f_close(ref Fil); /* Close the file */
res.ThrowIfError();
}
else
{
res.ThrowIfError();
}
Debug.WriteLine("File successfully created");
}
private static FRESULT Scan_Files(string path)
{
FRESULT res;
FILINFO fno = new FILINFO();
DIR dir = new DIR();
byte[] buff = new byte[256];
buff = path.ToNullTerminatedByteArray();
res = Ff.Current.f_opendir(ref dir, buff); /* Open the directory */
if (res == FRESULT.FR_OK)
{
for (; ;)
{
res = Ff.Current.f_readdir(ref dir, ref fno); /* Read a directory item */
if (res != FRESULT.FR_OK || fno.fname[0] == 0)
{
break; /* Break on error or end of dir */
}
if ((fno.fattrib & AM_DIR) > 0 && !((fno.fattrib & AM_SYS) > 0 || (fno.fattrib & AM_HID) > 0))
{
/* It is a directory */
var newpath = path + "/" + fno.fname.ToStringNullTerminationRemoved();
Debug.WriteLine($"Directory: {path}/{fno.fname.ToStringNullTerminationRemoved()}");
res = Scan_Files(newpath); /* Enter the directory */
if (res != FRESULT.FR_OK)
{
break;
}
}
else
{
/* It is a file. */
Debug.WriteLine($"File: {path}/{fno.fname.ToStringNullTerminationRemoved()}");
}
}
Ff.Current.f_closedir(ref dir);
}
return(res);
}
static void GetFreeSpaceExample()
{
uint fre_clust = 0;
uint fre_sect, tot_sect;
/* Get volume information and free clusters of drive 1 */
res = Ff.Current.f_getfree("0:", ref fre_clust, ref fs);
if (res != FRESULT.FR_OK)
{
Debug.WriteLine($"An error occured. {res.ToString()}");
return;
}
;
/* Get total sectors and free sectors */
tot_sect = (fs.n_fatent - 2) * fs.csize;
fre_sect = fre_clust * fs.csize;
/* Print the free space (assuming 512 bytes/sector) */
Debug.WriteLine(String.Format("{0} KB total drive space\n{1} KB available", tot_sect / 2, fre_sect / 2));
}
static void CreateDirectoriesExample()
{
res = Ff.Current.f_mkdir("sub1");
if (res != FRESULT.FR_EXIST)
{
res.ThrowIfError();
}
res = Ff.Current.f_mkdir("sub1/sub2");
if (res != FRESULT.FR_EXIST)
{
res.ThrowIfError();
}
res = Ff.Current.f_mkdir("sub1/sub2/sub3");
if (res != FRESULT.FR_EXIST)
{
res.ThrowIfError();
}
Debug.WriteLine("Directories successfully created");
}
public static void ThrowIfError(this FRESULT res)
{
string msg;
if (res != FRESULT.FR_OK)
{
switch (res)
{
case FRESULT.FR_OK:
msg = "FRESULT.FR_OK";
break;
case FRESULT.FR_DISK_ERR:
msg = "FRESULT.FR_DISK_ERR";
break;
case FRESULT.FR_INT_ERR:
msg = "FRESULT.FR_INT_ERR";
break;
case FRESULT.FR_NOT_READY:
msg = "FRESULT.FR_NOT_READY";
break;
case FRESULT.FR_NO_FILE:
msg = "FRESULT.FR_NO_FILE";
break;
case FRESULT.FR_NO_PATH:
msg = "FRESULT.FR_NO_PATH";
break;
case FRESULT.FR_INVALID_NAME:
msg = "FRESULT.FR_INVALID_NAME";
break;
case FRESULT.FR_DENIED:
msg = "FRESULT.FR_DENIED";
break;
case FRESULT.FR_EXIST:
msg = "FRESULT.FR_EXIST";
break;
case FRESULT.FR_INVALID_OBJECT:
msg = "FRESULT.FR_INVALID_OBJECT";
break;
case FRESULT.FR_WRITE_PROTECTED:
msg = "FRESULT.FR_WRITE_PROTECTED";
break;
case FRESULT.FR_INVALID_DRIVE:
msg = "FRESULT.FR_INVALID_DRIVE";
break;
case FRESULT.FR_NOT_ENABLED:
msg = "FRESULT.FR_NOT_ENABLED";
break;
case FRESULT.FR_NO_FILESYSTEM:
msg = "FRESULT.FR_NO_FILESYSTEM";
break;
case FRESULT.FR_MKFS_ABORTED:
msg = "FRESULT.FR_MKFS_ABORTED";
break;
case FRESULT.FR_TIMEOUT:
msg = "FRESULT.FR_TIMEOUT";
break;
case FRESULT.FR_LOCKED:
msg = "FRESULT.FR_LOCKED";
break;
case FRESULT.FR_NOT_ENOUGH_CORE:
msg = "FRESULT.FR_NOT_ENOUGH_CORE";
break;
case FRESULT.FR_TOO_MANY_OPEN_FILES:
msg = "FRESULT.FR_TOO_MANY_OPEN_FILES";
break;
case FRESULT.FR_INVALID_PARAMETER:
msg = "FRESULT.FR_INVALID_PARAMETER";
break;
default:
msg = "FRESULT.UNDEFINED";
break;
}
throw new ApplicationException($"Error: {msg}");
}
}
