Feature/sdcard fatfs support

FatFs_Module/src/00readme.txt

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+FatFs Module Source Files R0.10a                      (C)ChaN, 2014
+
+
+FILES
+
+  ffconf.h   Configuration file for FatFs module.
+  ff.h       Common include file for FatFs and application module.
+  ff.c       FatFs module.
+  diskio.h   Common include file for FatFs and disk I/O module.
+  diskio.c   An example of glue function to attach existing disk I/O module to FatFs.
+  integer.h  Integer type definitions for FatFs.
+  option     Optional external functions.
+
+  Low level disk I/O module is not included in this archive because the FatFs
+  module is only a generic file system layer and not depend on any specific
+  storage device. You have to provide a low level disk I/O module that written
+  to control your storage device.
+
+
+
+AGREEMENTS
+
+ FatFs module is an open source software to implement FAT file system to
+ small embedded systems. This is a free software and is opened for education,
+ research and commercial developments under license policy of following trems.
+
+  Copyright (C) 2014, ChaN, all right reserved.
+
+ * The FatFs module is a free software and there is NO WARRANTY.
+ * No restriction on use. You can use, modify and redistribute it for
+   personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
+ * Redistributions of source code must retain the above copyright notice.
+
+
+
+REVISION HISTORY
+
+  Feb 26, 2006  R0.00  Prototype
+
+  Apr 29, 2006  R0.01  First release.
+
+  Jun 01, 2006  R0.02  Added FAT12.
+                       Removed unbuffered mode.
+                       Fixed a problem on small (<32M) patition.
+
+  Jun 10, 2006  R0.02a Added a configuration option _FS_MINIMUM.
+
+  Sep 22, 2006  R0.03  Added f_rename.
+                       Changed option _FS_MINIMUM to _FS_MINIMIZE.
+
+  Dec 11, 2006  R0.03a Improved cluster scan algolithm to write files fast.
+                       Fixed f_mkdir creates incorrect directory on FAT32.
+
+  Feb 04, 2007  R0.04  Supported multiple drive system. (FatFs)
+                       Changed some APIs for multiple drive system.
+                       Added f_mkfs. (FatFs)
+                       Added _USE_FAT32 option. (Tiny-FatFs)
+
+  Apr 01, 2007  R0.04a Supported multiple partitions on a plysical drive. (FatFs)
+                       Fixed an endian sensitive code in f_mkfs. (FatFs)
+                       Added a capability of extending the file size to f_lseek.
+                       Added minimization level 3.
+                       Fixed a problem that can collapse a sector when recreate an
+                       existing file in any sub-directory at non FAT32 cfg. (Tiny-FatFs)
+
+  May 05, 2007  R0.04b Added _USE_NTFLAG option.
+                       Added FSInfo support.
+                       Fixed some problems corresponds to FAT32. (Tiny-FatFs)
+                       Fixed DBCS name can result FR_INVALID_NAME.
+                       Fixed short seek (0 < ofs <= csize) collapses the file object.
+
+  Aug 25, 2007  R0.05  Changed arguments of f_read, f_write.
+                       Changed arguments of f_mkfs. (FatFs)
+                       Fixed f_mkfs on FAT32 creates incorrect FSInfo. (FatFs)
+                       Fixed f_mkdir on FAT32 creates incorrect directory. (FatFs)
+
+  Feb 03, 2008  R0.05a Added f_truncate().
+                       Added f_utime().
+                       Fixed off by one error at FAT sub-type determination.
+                       Fixed btr in f_read() can be mistruncated.
+                       Fixed cached sector is not flushed when create and close without write.
+
+  Apr 01, 2008  R0.06  Added f_forward(). (Tiny-FatFs)
+                       Added string functions: fputc(), fputs(), fprintf() and fgets().
+                       Improved performance of f_lseek() on move to the same or following cluster.
+
+  Apr 01, 2009, R0.07  Merged Tiny-FatFs as a buffer configuration option.
+                       Added long file name support.
+                       Added multiple code page support.
+                       Added re-entrancy for multitask operation.
+                       Added auto cluster size selection to f_mkfs().
+                       Added rewind option to f_readdir().
+                       Changed result code of critical errors.
+                       Renamed string functions to avoid name collision.
+
+  Apr 14, 2009, R0.07a Separated out OS dependent code on reentrant cfg.
+                       Added multiple sector size support.
+
+  Jun 21, 2009, R0.07c Fixed f_unlink() may return FR_OK on error.
+                       Fixed wrong cache control in f_lseek().
+                       Added relative path feature.
+                       Added f_chdir().
+                       Added f_chdrive().
+                       Added proper case conversion for extended characters.
+
+  Nov 03, 2009 R0.07e  Separated out configuration options from ff.h to ffconf.h.
+                       Added a configuration option, _LFN_UNICODE.
+                       Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
+                       Fixed name matching error on the 13 char boundary.
+                       Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
+
+  May 15, 2010, R0.08  Added a memory configuration option. (_USE_LFN)
+                       Added file lock feature. (_FS_SHARE)
+                       Added fast seek feature. (_USE_FASTSEEK)
+                       Changed some types on the API, XCHAR->TCHAR.
+                       Changed fname member in the FILINFO structure on Unicode cfg.
+                       String functions support UTF-8 encoding files on Unicode cfg.
+
+  Aug 16,'10 R0.08a    Added f_getcwd(). (_FS_RPATH = 2)
+                       Added sector erase feature. (_USE_ERASE)
+                       Moved file lock semaphore table from fs object to the bss.
+                       Fixed a wrong directory entry is created on non-LFN cfg when the given name contains ';'.
+                       Fixed f_mkfs() creates wrong FAT32 volume.
+
+  Jan 15,'11 R0.08b    Fast seek feature is also applied to f_read() and f_write().
+                       f_lseek() reports required table size on creating CLMP.
+                       Extended format syntax of f_printf function.
+                       Ignores duplicated directory separators in given path names.
+
+  Sep 06,'11 R0.09     f_mkfs() supports multiple partition to finish the multiple partition feature.
+                       Added f_fdisk(). (_MULTI_PARTITION = 2)
+
+  Aug 27,'12 R0.09a    Fixed assertion failure due to OS/2 EA on FAT12/16.
+                       Changed f_open() and f_opendir() reject null object pointer to avoid crash.
+                       Changed option name _FS_SHARE to _FS_LOCK.
+
+  Jan 23,'13 R0.09b    Added f_getlabel() and f_setlabel(). (_USE_LABEL)
+
+  Oct 02,'13 R0.10     Added selection of character encoding on the file. (_STRF_ENCODE)
+                       Added f_closedir().
+                       Added forced full FAT scan for f_getfree(). (_FS_NOFSINFO)
+                       Added forced mount feature with changes of f_mount().
+                       Improved behavior of volume auto detection.
+                       Improved write throughput of f_puts() and f_printf().
+                       Changed argument of f_chdrive(), f_mkfs(), disk_read() and disk_write().
+                       Fixed f_write() can be truncated when the file size is close to 4GB.
+                       Fixed f_open(), f_mkdir() and f_setlabel() can return incorrect error code.
+
+  Jan 15,'14 R0.10a    Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID)
+                       Added a configuration option of minimum sector size. (_MIN_SS)
+                       2nd argument of f_rename() can have a drive number and it will be ignored.
+                       Fixed f_mount() with forced mount fails when drive number is >= 1.
+                       Fixed f_close() invalidates the file object without volume lock.
+                       Fixed f_closedir() returns but the volume lock is left acquired.
+                       Fixed creation of an entry with LFN fails on too many SFN collisions.

FatFs_Module/src/build.mk

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+# This file is a makefile included from the top level makefile which
+# defines the sources built for the target.
+
+# Define the prefix to this directory. 
+# Note: The name must be unique within this build and should be
+#       based on the root of the project
+TARGET_FATFS_PATH = FatFs_Module
+TARGET_FATFS_SRC_PATH = $(TARGET_FATFS_PATH)/src
+
+# Add to all objects built for this target
+INCLUDE_DIRS += $(TARGET_FATFS_SRC_PATH)
+
+# C source files included in this build.
+CSRC += $(TARGET_FATFS_SRC_PATH)/diskio.c
+CSRC += $(TARGET_FATFS_SRC_PATH)/ff.c
+
+# C++ source files included in this build.
+CPPSRC +=
+
+# ASM source files included in this build.
+ASRC +=
+

FatFs_Module/src/diskio.c

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+/*-----------------------------------------------------------------------*/
+/* Low level disk I/O module for FatFs                                   */
+/*-----------------------------------------------------------------------*/
+
+#include "diskio.h"		/* FatFs lower layer API */
+#include "sdcard_spi.h" /* SD Card - SPI support */
+
+/* Definitions of physical drive number for each media */
+#define SD_SPI_DISK		0
+
+// Private variables
+SD_CardInfo SDCardInfo;
+
+/*-----------------------------------------------------------------------*/
+/* Inidialize a Drive                                                    */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS disk_initialize (
+	BYTE pdrv				/* Physical drive nmuber (0..) */
+)
+{
+	DSTATUS stat;
+	SD_Error status;
+
+	switch (pdrv) {
+	case SD_SPI_DISK :
+		status = SD_Init();
+
+		if (status == SD_RESPONSE_NO_ERROR)
+		{
+			/* Read CSD/CID MSD registers */
+			status = SD_GetCardInfo(&SDCardInfo);
+		}
+
+		if (status == SD_RESPONSE_NO_ERROR)
+			stat = 0x00;
+		else
+			stat = STA_NOINIT;
+
+		return stat;
+	}
+
+	return STA_NOINIT;
+}
+
+/*-----------------------------------------------------------------------*/
+/* Get Disk Status                                                       */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS disk_status (
+	BYTE pdrv		/* Physical drive nmuber (0..) */
+)
+{
+	DSTATUS stat;
+	SD_Error status;
+
+	switch (pdrv) {
+	case SD_SPI_DISK :
+		status = SD_GetCardInfo(&SDCardInfo);
+
+		if (status == SD_RESPONSE_NO_ERROR)
+			stat = 0x00;
+		else
+			stat = STA_NOINIT;
+
+		return stat;
+	}
+
+	return STA_NOINIT;
+}
+
+/*-----------------------------------------------------------------------*/
+/* Read Sector(s)                                                        */
+/*-----------------------------------------------------------------------*/
+
+DRESULT disk_read (
+	BYTE pdrv,		/* Physical drive nmuber (0..) */
+	BYTE *buff,		/* Data buffer to store read data */
+	DWORD sector,	/* Sector address (LBA) */
+	UINT count		/* Number of sectors to read (1..128) */
+)
+{
+	DRESULT res;
+	SD_Error status;
+
+	switch (pdrv) {
+	case SD_SPI_DISK :
+		if (count == 1)
+			status = SD_ReadBlock((uint8_t*)buff, sector << 9, 512);
+		else
+			status = SD_ReadMultiBlocks((uint8_t*)buff, sector << 9, 512, count);
+
+		if(status == SD_RESPONSE_NO_ERROR)
+			res = RES_OK;
+		else
+			res = RES_ERROR;
+
+		return res;
+	}
+
+	return RES_PARERR;
+}
+
+/*-----------------------------------------------------------------------*/
+/* Write Sector(s)                                                       */
+/*-----------------------------------------------------------------------*/
+
+#if _USE_WRITE
+DRESULT disk_write (
+	BYTE pdrv,			/* Physical drive nmuber (0..) */
+	const BYTE *buff,	/* Data to be written */
+	DWORD sector,		/* Sector address (LBA) */
+	UINT count			/* Number of sectors to write (1..128) */
+)
+{
+	DRESULT res;
+	SD_Error status;
+
+	switch (pdrv) {
+	case SD_SPI_DISK :
+		if (count == 1)
+			status = SD_WriteBlock((uint8_t*)buff, sector << 9, 512);
+		else
+			status = SD_WriteMultiBlocks((uint8_t*)buff, sector << 9, 512, count);
+
+		if(status == SD_RESPONSE_NO_ERROR)
+			res = RES_OK;
+		else
+			res = RES_ERROR;
+
+		return res;
+	}
+
+	return RES_PARERR;
+}
+#endif
+
+/*-----------------------------------------------------------------------*/
+/* Miscellaneous Functions                                               */
+/*-----------------------------------------------------------------------*/
+
+#if _USE_IOCTL
+DRESULT disk_ioctl (
+	BYTE pdrv,		/* Physical drive nmuber (0..) */
+	BYTE cmd,		/* Control code */
+	void *buff		/* Buffer to send/receive control data */
+)
+{
+	DRESULT res;
+
+	switch (pdrv) {
+	case SD_SPI_DISK :
+		switch (cmd) {
+		case CTRL_SYNC :            /* Make sure that no pending write process */
+			// no synchronization to do
+			res = RES_OK;
+			break;
+
+		case GET_SECTOR_SIZE :      /* Get R/W sector size (WORD) */
+			*(WORD*)buff = 512;
+			res = RES_OK;
+			break;
+
+		case GET_SECTOR_COUNT :     /* Get number of sectors on the disk (DWORD) */
+			*(DWORD*)buff = SDCardInfo.CardCapacity / 512;
+			res = RES_OK;
+			break;
+
+		case GET_BLOCK_SIZE :       /* Get erase block size in unit of sector (DWORD) */
+			*(DWORD*)buff = 512;
+			res = RES_OK;
+			break;
+		}
+
+		return res;
+	}
+
+	return RES_PARERR;
+}
+#endif