Added long filename support.

Marlin/Marlin.pde

@@ -1810,5 +1810,3 @@ void setPwmFrequency(uint8_t pin, int val)
   }
 }
 #endif
-
-

Marlin/Sd2Card.cpp

@@ -369,7 +369,6 @@ bool Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
  *
  * \param[in] blockNumber Logical block to be read.
  * \param[out] dst Pointer to the location that will receive the data.
-
  * \return The value one, true, is returned for success and
  * the value zero, false, is returned for failure.
  */
@@ -639,5 +638,4 @@ bool Sd2Card::writeStop() {
   return false;
 }
 
-
 #endif

Marlin/SdBaseFile.cpp

@@ -867,7 +867,7 @@ bool SdBaseFile::openParent(SdBaseFile* dir) {
   }
   // search for parent in '../..'
   do {
-    if (file.readDir(&entry) != 32) goto fail;
+    if (file.readDir(&entry, NULL) != 32) goto fail;
     c = entry.firstClusterLow;
     c |= (uint32_t)entry.firstClusterHigh << 16;
   } while (c != cluster);
@@ -1108,11 +1108,17 @@ int16_t SdBaseFile::read(void* buf, uint16_t nbyte) {
  * readDir() called before a directory has been opened, this is not
  * a directory file or an I/O error occurred.
  */
-int8_t SdBaseFile::readDir(dir_t* dir) {
+int8_t SdBaseFile::readDir(dir_t* dir, char* longFilename) {
   int16_t n;
   // if not a directory file or miss-positioned return an error
   if (!isDir() || (0X1F & curPosition_)) return -1;
   
+  //If we have a longFilename buffer, mark it as invalid. If we find a long filename it will be filled automaticly.
+  if (longFilename != NULL)
+  {
+  	longFilename[0] = '\0';
+  }
+
   while (1) {
     n = read(dir, sizeof(dir_t));
     if (n != sizeof(dir_t)) return n == 0 ? 0 : -1;
@@ -1120,6 +1126,34 @@ int8_t SdBaseFile::readDir(dir_t* dir) {
     if (dir->name[0] == DIR_NAME_FREE) return 0;
     // skip empty entries and entry for .  and ..
     if (dir->name[0] == DIR_NAME_DELETED || dir->name[0] == '.') continue;
+    //Fill the long filename if we have a long filename entry,
+	// long filename entries are stored before the actual filename.
+	if (DIR_IS_LONG_NAME(dir) && longFilename != NULL)
+    {
+    	vfat_t *VFAT = (vfat_t*)dir;
+		//Sanity check the VFAT entry. The first cluster is always set to zero. And th esequence number should be higher then 0
+    	if (VFAT->firstClusterLow == 0 && (VFAT->sequenceNumber & 0x1F) > 0 && (VFAT->sequenceNumber & 0x1F) <= MAX_VFAT_ENTRIES)
+    	{
+			//TODO: Store the filename checksum to verify if a none-long filename aware system modified the file table.
+    		n = ((VFAT->sequenceNumber & 0x1F) - 1) * 13;
+			longFilename[n+0] = VFAT->name1[0];
+			longFilename[n+1] = VFAT->name1[1];
+			longFilename[n+2] = VFAT->name1[2];
+			longFilename[n+3] = VFAT->name1[3];
+			longFilename[n+4] = VFAT->name1[4];
+			longFilename[n+5] = VFAT->name2[0];
+			longFilename[n+6] = VFAT->name2[1];
+			longFilename[n+7] = VFAT->name2[2];
+			longFilename[n+8] = VFAT->name2[3];
+			longFilename[n+9] = VFAT->name2[4];
+			longFilename[n+10] = VFAT->name2[5];
+			longFilename[n+11] = VFAT->name3[0];
+			longFilename[n+12] = VFAT->name3[1];
+			//If this VFAT entry is the last one, add a NUL terminator at the end of the string
+			if (VFAT->sequenceNumber & 0x40)
+				longFilename[n+13] = '\0';
+		}
+    }
     // return if normal file or subdirectory
     if (DIR_IS_FILE_OR_SUBDIR(dir)) return n;
   }

Marlin/SdBaseFile.h

@@ -283,7 +283,7 @@ class SdBaseFile {
   bool printName();
   int16_t read();
   int16_t read(void* buf, uint16_t nbyte);
-  int8_t readDir(dir_t* dir);
+  int8_t readDir(dir_t* dir, char* longFilename);
   static bool remove(SdBaseFile* dirFile, const char* path);
   bool remove();
   /** Set the file's current position to zero. */
@@ -455,7 +455,7 @@ class SdBaseFile {
    * \param[out] dir The dir_t struct that will receive the data.
    * \return bytes read for success zero for eof or -1 for failure.
    */
-  int8_t readDir(dir_t& dir) {return readDir(&dir);}  // NOLINT
+  int8_t readDir(dir_t& dir, char* longFilename) {return readDir(&dir, longFilename);}  // NOLINT
   /** \deprecated Use:
    * static uint8_t remove(SdBaseFile* dirFile, const char* path);
    * \param[in] dirFile The directory that contains the file.

Marlin/SdFatConfig.h

@@ -108,6 +108,13 @@ uint8_t const SOFT_SPI_SCK_PIN = 13;
  * a pure virtual function is called.
  */
 #define USE_CXA_PURE_VIRTUAL 1
+/**
+ * Defines for long (vfat) filenames
+ */
+/** Number of VFAT entries used. Every entry has 13 UTF-16 characters */
+#define MAX_VFAT_ENTRIES (2)
+/** Total size of the buffer used to store the long filenames */
+#define LONG_FILENAME_LENGTH (13*MAX_VFAT_ENTRIES+1)
 #endif  // SdFatConfig_h
 
 

Marlin/SdFatStructs.h

@@ -22,6 +22,8 @@
 
 #ifndef SdFatStructs_h
 #define SdFatStructs_h
+
+#define PACKED __attribute__((__packed__))
 /**
  * \file
  * \brief FAT file structures
@@ -95,7 +97,7 @@ struct partitionTable {
   uint32_t firstSector;
            /** Length of the partition, in blocks. */
   uint32_t totalSectors;
-};
+} PACKED;
 /** Type name for partitionTable */
 typedef struct partitionTable part_t;
 //------------------------------------------------------------------------------
@@ -119,7 +121,7 @@ struct masterBootRecord {
   uint8_t  mbrSig0;
            /** Second MBR signature byte. Must be 0XAA */
   uint8_t  mbrSig1;
-};
+} PACKED;
 /** Type name for masterBootRecord */
 typedef struct masterBootRecord mbr_t;
 //------------------------------------------------------------------------------
@@ -247,7 +249,7 @@ struct fat_boot {
   uint8_t  bootSectorSig0;
            /** must be 0XAA */
   uint8_t  bootSectorSig1;
-};
+} PACKED;
 /** Type name for FAT Boot Sector */
 typedef struct fat_boot fat_boot_t;
 //------------------------------------------------------------------------------
@@ -401,7 +403,7 @@ struct fat32_boot {
   uint8_t  bootSectorSig0;
            /** must be 0XAA */
   uint8_t  bootSectorSig1;
-};
+} PACKED;
 /** Type name for FAT32 Boot Sector */
 typedef struct fat32_boot fat32_boot_t;
 //------------------------------------------------------------------------------
@@ -441,7 +443,7 @@ struct fat32_fsinfo {
   uint8_t  reserved2[12];
            /** must be 0X00, 0X00, 0X55, 0XAA */
   uint8_t  tailSignature[4];
-};
+} PACKED;
 /** Type name for FAT32 FSINFO Sector */
 typedef struct fat32_fsinfo fat32_fsinfo_t;
 //------------------------------------------------------------------------------
@@ -539,12 +541,46 @@ struct directoryEntry {
   uint16_t firstClusterLow;
            /** 32-bit unsigned holding this file's size in bytes. */
   uint32_t fileSize;
-};
+} PACKED;
+/**
+ * \struct directoryVFATEntry
+ * \brief VFAT long filename directory entry
+ *
+ * directoryVFATEntries are found in the same list as normal directoryEntry.
+ * But have the attribute field set to DIR_ATT_LONG_NAME.
+ * 
+ * Long filenames are saved in multiple directoryVFATEntries.
+ * Each entry containing 13 UTF-16 characters.
+ */
+struct directoryVFATEntry {
+  /**
+   * Sequence number. Consists of 2 parts:
+   *  bit 6:   indicates first long filename block for the next file
+   *  bit 0-4: the position of this long filename block (first block is 1)
+   */
+  uint8_t  sequenceNumber;
+  /** First set of UTF-16 characters */
+  uint16_t name1[5];//UTF-16
+  /** attributes (at the same location as in directoryEntry), always 0x0F */
+  uint8_t  attributes;
+  /** Reserved for use by Windows NT. Always 0. */
+  uint8_t  reservedNT;
+  /** Checksum of the short 8.3 filename, can be used to checked if the file system as modified by a not-long-filename aware implementation. */
+  uint8_t  checksum;
+  /** Second set of UTF-16 characters */
+  uint16_t name2[6];//UTF-16
+  /** firstClusterLow is always zero for longFilenames */
+  uint16_t firstClusterLow;
+  /** Third set of UTF-16 characters */
+  uint16_t name3[2];//UTF-16
+} PACKED;
 //------------------------------------------------------------------------------
 // Definitions for directory entries
 //
 /** Type name for directoryEntry */
 typedef struct directoryEntry dir_t;
+/** Type name for directoryVFATEntry */
+typedef struct directoryVFATEntry vfat_t;
 /** escape for name[0] = 0XE5 */
 uint8_t const DIR_NAME_0XE5 = 0X05;
 /** name[0] value for entry that is free after being "deleted" */

Marlin/cardreader.cpp

@@ -51,7 +51,7 @@ void  CardReader::lsDive(const char *prepend,SdFile parent)
   dir_t p;
  uint8_t cnt=0;
  
-  while (parent.readDir(p) > 0)
+  while (parent.readDir(p, longFilename) > 0)
   {
     if( DIR_IS_SUBDIR(&p) && lsAction!=LS_Count && lsAction!=LS_GetFilename) // hence LS_SerialPrint
     {
@@ -429,16 +429,16 @@ void CardReader::checkautostart(bool force)
   
   char autoname[30];
   sprintf(autoname,"auto%i.g",lastnr);
-  for(int8_t i=0;i<(int)strlen(autoname);i++)
+  for(int8_t i=0;i<(int8_t)strlen(autoname);i++)
     autoname[i]=tolower(autoname[i]);
   dir_t p;
 
   root.rewind();
   
   bool found=false;
-  while (root.readDir(p) > 0) 
+  while (root.readDir(p, NULL) > 0) 
   {
-    for(int8_t i=0;i<(int)strlen((char*)p.name);i++)
+    for(int8_t i=0;i<(int8_t)strlen((char*)p.name);i++)
     p.name[i]=tolower(p.name[i]);
     //Serial.print((char*)p.name);
     //Serial.print(" ");

Marlin/cardreader.h

@@ -45,7 +45,8 @@ public:
   bool saving;
   bool sdprinting ;  
   bool cardOK ;
-  char filename[12];
+  char filename[13];
+  char longFilename[LONG_FILENAME_LENGTH];
   bool filenameIsDir;
   int lastnr; //last number of the autostart;
 private:

Marlin/ultralcd.pde

@@ -2304,7 +2304,15 @@ void MainMenu::showSD()
           //Serial.print("Filenr:");Serial.println(i-2);
           lcd.setCursor(0,line);lcdprintPGM(" ");
           if(card.filenameIsDir) lcd.print("\005");
-          lcd.print(card.filename);
+          if (card.longFilename[0])
+          {
+            card.longFilename[LCD_WIDTH-1] = '\0';
+            lcd.print(card.longFilename);
+          }
+          else
+          {
+            lcd.print(card.filename);
+          }
         }
         if((activeline==line) && CLICKED)
         {
@@ -2329,7 +2337,15 @@ void MainMenu::showSD()
             enquecommand("M24");
             beep(); 
             status=Main_Status;
-            lcd_status(card.filename);
+            if (card.longFilename[0])
+            {
+              card.longFilename[LCD_WIDTH-1] = '\0';
+              lcd_status(card.longFilename);
+            }
+            else
+            {
+              lcd_status(card.filename);
+            }
           }
         } 
       }