Revision 0:1596b8644523, committed 2012-11-19

Comitter:

TickTock

Date:

Mon Nov 19 04:44:11 2012 +0000

Child:

1:9dcd70c32180

Commit message:

Initial revision - just getting hw up and running

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DebounceIn.lib	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,1 @@
+DebounceIn#427f15966f54

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FatFileSystem/FATDirHandle.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,29 @@
+/* Copyright 2008 ARM Limited. All rights reserved. */
+
+#ifndef MBED_FATDIRHANDLE_H
+#define MBED_FATDIRHANDLE_H
+
+#include "DirHandle.h"
+#include "ff.h"
+
+namespace mbed {
+
+class FATDirHandle : public DirHandle {
+
+ public:
+    FATDirHandle(const FATFS_DIR &the_dir);
+    virtual int closedir();
+    virtual struct dirent *readdir();
+    virtual void rewinddir();
+    virtual off_t telldir();
+    virtual void seekdir(off_t location);
+
+ private:
+    FATFS_DIR dir;
+    struct dirent cur_entry;
+
+};
+
+}
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FatFileSystem/FATFileHandle.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,33 @@
+/* mbed Microcontroller Library - FATFileHandle
+ * Copyright (c) 2008, sford
+ */
+
+#ifndef MBED_FATFILEHANDLE_H
+#define MBED_FATFILEHANDLE_H
+
+#include "FileHandle.h"
+#include "ff.h"
+
+namespace mbed {
+
+class FATFileHandle : public FileHandle {
+public:
+
+    FATFileHandle(FIL fh);
+    virtual int close();
+    virtual ssize_t write(const void* buffer, size_t length);
+    virtual ssize_t read(void* buffer, size_t length);
+    virtual int isatty();
+    virtual off_t lseek(off_t position, int whence);
+    virtual int fsync();
+    virtual off_t flen();
+
+protected:
+
+    FIL _fh;
+
+};
+
+}
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FatFileSystem/FATFileSystem.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,61 @@
+/* mbed Microcontroller Library - FATFileSystem
+ * Copyright (c) 2008, sford
+ */
+
+/* Library: FATFileSystem.h
+ * A library of stuff to make a fat filesystem on top of a block device
+ */
+
+#ifndef MBED_FATFILESYSTEM_H
+#define MBED_FATFILESYSTEM_H
+
+#ifndef FFSDEBUG_ENABLED
+#define FFSDEBUG_ENABLED 0
+#endif
+
+#if FFSDEBUG_ENABLED
+#define FFSDEBUG(FMT, ...) printf(FMT, ##__VA_ARGS__)
+#else
+#define FFSDEBUG(FMT, ...)
+#endif
+
+#include "FileSystemLike.h"
+#include "FileHandle.h"
+#include "ff.h"
+#include "diskio.h"
+
+namespace mbed {
+/* Class: FATFileSystem
+ * The class itself
+ */
+class FATFileSystem : public FileSystemLike {
+public:
+
+    FATFileSystem(const char* n);
+    virtual ~FATFileSystem();
+    
+    /* Function: open
+       * open a file on the filesystem. never called directly
+       */
+    virtual FileHandle *open(const char* name, int flags);
+    virtual int remove(const char *filename);
+    virtual int format();
+        virtual DirHandle *opendir(const char *name);
+        virtual int mkdir(const char *name, mode_t mode);
+    
+    FATFS _fs;                                // Work area (file system object) for logical drive    
+    static FATFileSystem *_ffs[_DRIVES];    // FATFileSystem objects, as parallel to FatFs drives array
+    int _fsid;
+    
+    virtual int disk_initialize() { return 0; }
+    virtual int disk_status() { return 0; }
+    virtual int disk_read(char *buffer, int sector) = 0;
+    virtual int disk_write(const char *buffer, int sector) = 0;
+    virtual int disk_sync() { return 0; }
+    virtual int disk_sectors() = 0;
+     
+};
+    
+}
+
+#endif

Binary file FatFileSystem/LPC1768/FATFileSystem.ar has changed

Binary file FatFileSystem/LPC2368/FATFileSystem.ar has changed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FatFileSystem/diskio.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,76 @@
+/*-----------------------------------------------------------------------
+/  Low level disk interface modlue include file  R0.06   (C)ChaN, 2007
+/-----------------------------------------------------------------------*/
+
+#ifndef _DISKIO
+
+#define _READONLY    0    /* 1: Read-only mode */
+#define _USE_IOCTL    1
+
+#include "integer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Status of Disk Functions */
+typedef BYTE    DSTATUS;
+
+/* Results of Disk Functions */
+typedef enum {
+    RES_OK = 0,        /* 0: Successful */
+    RES_ERROR,        /* 1: R/W Error */
+    RES_WRPRT,        /* 2: Write Protected */
+    RES_NOTRDY,        /* 3: Not Ready */
+    RES_PARERR        /* 4: Invalid Parameter */
+} DRESULT;
+
+
+/*---------------------------------------*/
+/* Prototypes for disk control functions */
+
+DSTATUS disk_initialize (BYTE);
+DSTATUS disk_status (BYTE);
+DRESULT disk_read (BYTE, BYTE*, DWORD, BYTE);
+#if    _READONLY == 0
+DRESULT disk_write (BYTE, const BYTE*, DWORD, BYTE);
+#endif
+DRESULT disk_ioctl (BYTE, BYTE, void*);
+void    disk_timerproc (void);
+
+#ifdef __cplusplus
+};
+#endif
+
+
+/* Disk Status Bits (DSTATUS) */
+
+#define STA_NOINIT        0x01    /* Drive not initialized */
+#define STA_NODISK        0x02    /* No medium in the drive */
+#define STA_PROTECT        0x04    /* Write protected */
+
+
+/* Command code for disk_ioctrl() */
+
+/* Generic command */
+#define CTRL_SYNC            0    /* Mandatory for read/write configuration */
+#define GET_SECTOR_COUNT    1    /* Mandatory for only f_mkfs() */
+#define GET_SECTOR_SIZE        2
+#define GET_BLOCK_SIZE        3    /* Mandatory for only f_mkfs() */
+#define CTRL_POWER            4
+#define CTRL_LOCK            5
+#define CTRL_EJECT            6
+/* MMC/SDC command */
+#define MMC_GET_TYPE        10
+#define MMC_GET_CSD            11
+#define MMC_GET_CID            12
+#define MMC_GET_OCR            13
+#define MMC_GET_SDSTAT        14
+/* ATA/CF command */
+#define ATA_GET_REV            20
+#define ATA_GET_MODEL        21
+#define ATA_GET_SN            22
+
+
+#define _DISKIO
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FatFileSystem/ff.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,344 @@
+/*--------------------------------------------------------------------------/
+/  FatFs - FAT file system module include file  R0.06        (C)ChaN, 2008
+/---------------------------------------------------------------------------/
+/ FatFs module is an experimenal project to implement FAT file system to
+/ cheap microcontrollers. This is a free software and is opened for education,
+/ research and development under license policy of following trems.
+/
+/  Copyright (C) 2008, ChaN, all right reserved.
+/
+/ * The FatFs module is a free software and there is no warranty.
+/ * You can use, modify and/or redistribute it for personal, non-profit or
+/   commercial use without any restriction under your responsibility.
+/ * Redistributions of source code must retain the above copyright notice.
+/
+/---------------------------------------------------------------------------*/
+
+#ifndef _FATFS
+
+#define _MCU_ENDIAN        2
+/* The _MCU_ENDIAN defines which access method is used to the FAT structure.
+/  1: Enable word access.
+/  2: Disable word access and use byte-by-byte access instead.
+/  When the architectural byte order of the MCU is big-endian and/or address
+/  miss-aligned access results incorrect behavior, the _MCU_ENDIAN must be set to 2.
+/  If it is not the case, it can also be set to 1 for good code efficiency. */
+
+#define _FS_READONLY    0
+/* Setting _FS_READONLY to 1 defines read only configuration. This removes
+/  writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename,
+/  f_truncate and useless f_getfree. */
+
+#define _FS_MINIMIZE    0
+/* The _FS_MINIMIZE option defines minimization level to remove some functions.
+/  0: Full function.
+/  1: f_stat, f_getfree, f_unlink, f_mkdir, f_chmod, f_truncate and f_rename are removed.
+/  2: f_opendir and f_readdir are removed in addition to level 1.
+/  3: f_lseek is removed in addition to level 2. */
+
+#define    _USE_STRFUNC    0
+/* To enable string functions, set _USE_STRFUNC to 1 or 2. */
+
+#define    _USE_MKFS    1
+/* When _USE_MKFS is set to 1 and _FS_READONLY is set to 0, f_mkfs function is
+/  enabled. */
+
+#define _DRIVES        4
+/* Number of logical drives to be used. This affects the size of internal table. */
+
+#define    _MULTI_PARTITION    0
+/* When _MULTI_PARTITION is set to 0, each logical drive is bound to same
+/  physical drive number and can mount only 1st primaly partition. When it is
+/  set to 1, each logical drive can mount a partition listed in Drives[]. */
+
+#define _USE_FSINFO    0
+/* To enable FSInfo support on FAT32 volume, set _USE_FSINFO to 1. */
+
+#define    _USE_SJIS    1
+/* When _USE_SJIS is set to 1, Shift-JIS code transparency is enabled, otherwise
+/  only US-ASCII(7bit) code can be accepted as file/directory name. */
+
+#define    _USE_NTFLAG    1
+/* When _USE_NTFLAG is set to 1, upper/lower case of the file name is preserved.
+/  Note that the files are always accessed in case insensitive. */
+
+
+#include "integer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Definitions corresponds to multiple sector size (not tested) */
+#define    S_MAX_SIZ    512U            /* Do not change */
+#if S_MAX_SIZ > 512U
+#define    SS(fs)    ((fs)->s_size)
+#else
+#define    SS(fs)    512U
+#endif
+
+
+/* File system object structure */
+typedef struct _FATFS {
+    WORD    id;                /* File system mount ID */
+    WORD    n_rootdir;        /* Number of root directory entries */
+    DWORD    winsect;        /* Current sector appearing in the win[] */
+    DWORD    sects_fat;        /* Sectors per fat */
+    DWORD    max_clust;        /* Maximum cluster# + 1 */
+    DWORD    fatbase;        /* FAT start sector */
+    DWORD    dirbase;        /* Root directory start sector (cluster# for FAT32) */
+    DWORD    database;        /* Data start sector */
+#if !_FS_READONLY
+    DWORD    last_clust;        /* Last allocated cluster */
+    DWORD    free_clust;        /* Number of free clusters */
+#if _USE_FSINFO
+    DWORD    fsi_sector;        /* fsinfo sector */
+    BYTE    fsi_flag;        /* fsinfo dirty flag (1:must be written back) */
+    BYTE    pad2;
+#endif
+#endif
+    BYTE    fs_type;        /* FAT sub type */
+    BYTE    csize;            /* Number of sectors per cluster */
+#if S_MAX_SIZ > 512U
+    WORD    s_size;            /* Sector size */
+#endif
+    BYTE    n_fats;            /* Number of FAT copies */
+    BYTE    drive;            /* Physical drive number */
+    BYTE    winflag;        /* win[] dirty flag (1:must be written back) */
+    BYTE    pad1;
+    BYTE    win[S_MAX_SIZ];    /* Disk access window for Directory/FAT */
+} FATFS;
+
+
+/* Directory object structure */
+typedef struct _DIR {
+    WORD    id;            /* Owner file system mount ID */
+    WORD    index;        /* Current index */
+    FATFS*    fs;            /* Pointer to the owner file system object */
+    DWORD    sclust;        /* Start cluster */
+    DWORD    clust;        /* Current cluster */
+    DWORD    sect;        /* Current sector */
+} FATFS_DIR;
+
+
+/* File object structure */
+typedef struct _FIL {
+    WORD    id;                /* Owner file system mount ID */
+    BYTE    flag;            /* File status flags */
+    BYTE    csect;            /* Sector address in the cluster */
+    FATFS*    fs;                /* Pointer to the owner file system object */
+    DWORD    fptr;            /* File R/W pointer */
+    DWORD    fsize;            /* File size */
+    DWORD    org_clust;        /* File start cluster */
+    DWORD    curr_clust;        /* Current cluster */
+    DWORD    curr_sect;        /* Current sector */
+#if _FS_READONLY == 0
+    DWORD    dir_sect;        /* Sector containing the directory entry */
+    BYTE*    dir_ptr;        /* Ponter to the directory entry in the window */
+#endif
+    BYTE    buffer[S_MAX_SIZ];    /* File R/W buffer */
+} FIL;
+
+
+/* File status structure */
+typedef struct _FILINFO {
+    DWORD fsize;            /* Size */
+    WORD fdate;                /* Date */
+    WORD ftime;                /* Time */
+    BYTE fattrib;            /* Attribute */
+    char fname[8+1+3+1];    /* Name (8.3 format) */
+} FILINFO;
+
+
+
+/* Definitions corresponds to multi partition */
+
+#if _MULTI_PARTITION != 0    /* Multiple partition cfg */
+
+typedef struct _PARTITION {
+    BYTE pd;    /* Physical drive # (0-255) */
+    BYTE pt;    /* Partition # (0-3) */
+} PARTITION;
+extern
+const PARTITION Drives[];            /* Logical drive# to physical location conversion table */
+#define LD2PD(drv) (Drives[drv].pd)    /* Get physical drive# */
+#define LD2PT(drv) (Drives[drv].pt)    /* Get partition# */
+
+#else                        /* Single partition cfg */
+
+#define LD2PD(drv) (drv)        /* Physical drive# is equal to logical drive# */
+#define LD2PT(drv) 0            /* Always mounts the 1st partition */
+
+#endif
+
+
+/* File function return code (FRESULT) */
+
+typedef enum {
+    FR_OK = 0,            /* 0 */
+    FR_NOT_READY,        /* 1 */
+    FR_NO_FILE,            /* 2 */
+    FR_NO_PATH,            /* 3 */
+    FR_INVALID_NAME,    /* 4 */
+    FR_INVALID_DRIVE,    /* 5 */
+    FR_DENIED,            /* 6 */
+    FR_EXIST,            /* 7 */
+    FR_RW_ERROR,        /* 8 */
+    FR_WRITE_PROTECTED,    /* 9 */
+    FR_NOT_ENABLED,        /* 10 */
+    FR_NO_FILESYSTEM,    /* 11 */
+    FR_INVALID_OBJECT,    /* 12 */
+    FR_MKFS_ABORTED        /* 13 */
+} FRESULT;
+
+
+
+/*-----------------------------------------------------*/
+/* FatFs module application interface                  */
+
+FRESULT f_mount (BYTE, FATFS*);                        /* Mount/Unmount a logical drive */
+FRESULT f_open (FIL*, const char*, BYTE);            /* Open or create a file */
+FRESULT f_read (FIL*, void*, UINT, UINT*);            /* Read data from a file */
+FRESULT f_write (FIL*, const void*, UINT, UINT*);    /* Write data to a file */
+FRESULT f_lseek (FIL*, DWORD);                        /* Move file pointer of a file object */
+FRESULT f_close (FIL*);                                /* Close an open file object */
+FRESULT f_opendir (FATFS_DIR*, const char*);                /* Open an existing directory */
+FRESULT f_readdir (FATFS_DIR*, FILINFO*);                    /* Read a directory item */
+FRESULT f_stat (const char*, FILINFO*);                /* Get file status */
+FRESULT f_getfree (const char*, DWORD*, FATFS**);    /* Get number of free clusters on the drive */
+FRESULT f_truncate (FIL*);                            /* Truncate file */
+FRESULT f_sync (FIL*);                                /* Flush cached data of a writing file */
+FRESULT f_unlink (const char*);                        /* Delete an existing file or directory */
+FRESULT    f_mkdir (const char*);                        /* Create a new directory */
+FRESULT f_chmod (const char*, BYTE, BYTE);            /* Change file/dir attriburte */
+FRESULT f_utime (const char*, const FILINFO*);        /* Change file/dir timestamp */
+FRESULT f_rename (const char*, const char*);        /* Rename/Move a file or directory */
+FRESULT f_mkfs (BYTE, BYTE, WORD);                    /* Create a file system on the drive */
+#if _USE_STRFUNC
+#define feof(fp) ((fp)->fptr == (fp)->fsize)
+#define EOF -1
+int fputc (int, FIL*);                                /* Put a character to the file */
+int fputs (const char*, FIL*);                        /* Put a string to the file */
+int fprintf (FIL*, const char*, ...);                /* Put a formatted string to the file */
+char* fgets (char*, int, FIL*);                        /* Get a string from the file */
+#endif
+
+/* User defined function to give a current time to fatfs module */
+
+DWORD get_fattime (void);    /* 31-25: Year(0-127 org.1980), 24-21: Month(1-12), 20-16: Day(1-31) */
+                            /* 15-11: Hour(0-23), 10-5: Minute(0-59), 4-0: Second(0-29 *2) */
+
+
+
+/* File access control and file status flags (FIL.flag) */
+
+#define    FA_READ                0x01
+#define    FA_OPEN_EXISTING    0x00
+#if _FS_READONLY == 0
+#define    FA_WRITE            0x02
+#define    FA_CREATE_NEW        0x04
+#define    FA_CREATE_ALWAYS    0x08
+#define    FA_OPEN_ALWAYS        0x10
+#define FA__WRITTEN            0x20
+#define FA__DIRTY            0x40
+#endif
+#define FA__ERROR            0x80
+
+
+/* FAT sub type (FATFS.fs_type) */
+
+#define FS_FAT12    1
+#define FS_FAT16    2
+#define FS_FAT32    3
+
+
+/* File attribute bits for directory entry */
+
+#define    AM_RDO    0x01    /* Read only */
+#define    AM_HID    0x02    /* Hidden */
+#define    AM_SYS    0x04    /* System */
+#define    AM_VOL    0x08    /* Volume label */
+#define AM_LFN    0x0F    /* LFN entry */
+#define AM_DIR    0x10    /* Directory */
+#define AM_ARC    0x20    /* Archive */
+
+
+
+/* Offset of FAT structure members */
+
+#define BS_jmpBoot            0
+#define BS_OEMName            3
+#define BPB_BytsPerSec        11
+#define BPB_SecPerClus        13
+#define BPB_RsvdSecCnt        14
+#define BPB_NumFATs            16
+#define BPB_RootEntCnt        17
+#define BPB_TotSec16        19
+#define BPB_Media            21
+#define BPB_FATSz16            22
+#define BPB_SecPerTrk        24
+#define BPB_NumHeads        26
+#define BPB_HiddSec            28
+#define BPB_TotSec32        32
+#define BS_55AA                510
+
+#define BS_DrvNum            36
+#define BS_BootSig            38
+#define BS_VolID            39
+#define BS_VolLab            43
+#define BS_FilSysType        54
+
+#define BPB_FATSz32            36
+#define BPB_ExtFlags        40
+#define BPB_FSVer            42
+#define BPB_RootClus        44
+#define BPB_FSInfo            48
+#define BPB_BkBootSec        50
+#define BS_DrvNum32            64
+#define BS_BootSig32        66
+#define BS_VolID32            67
+#define BS_VolLab32            71
+#define BS_FilSysType32        82
+
+#define    FSI_LeadSig            0
+#define    FSI_StrucSig        484
+#define    FSI_Free_Count        488
+#define    FSI_Nxt_Free        492
+
+#define MBR_Table            446
+
+#define    DIR_Name            0
+#define    DIR_Attr            11
+#define    DIR_NTres            12
+#define    DIR_CrtTime            14
+#define    DIR_CrtDate            16
+#define    DIR_FstClusHI        20
+#define    DIR_WrtTime            22
+#define    DIR_WrtDate            24
+#define    DIR_FstClusLO        26
+#define    DIR_FileSize        28
+
+
+
+/* Multi-byte word access macros  */
+
+#if _MCU_ENDIAN == 1    /* Use word access */
+#define    LD_WORD(ptr)        (WORD)(*(WORD*)(BYTE*)(ptr))
+#define    LD_DWORD(ptr)        (DWORD)(*(DWORD*)(BYTE*)(ptr))
+#define    ST_WORD(ptr,val)    *(WORD*)(BYTE*)(ptr)=(WORD)(val)
+#define    ST_DWORD(ptr,val)    *(DWORD*)(BYTE*)(ptr)=(DWORD)(val)
+#elif _MCU_ENDIAN == 2    /* Use byte-by-byte access */
+#define    LD_WORD(ptr)        (WORD)(((WORD)*(volatile BYTE*)((ptr)+1)<<8)|(WORD)*(volatile BYTE*)(ptr))
+#define    LD_DWORD(ptr)        (DWORD)(((DWORD)*(volatile BYTE*)((ptr)+3)<<24)|((DWORD)*(volatile BYTE*)((ptr)+2)<<16)|((WORD)*(volatile BYTE*)((ptr)+1)<<8)|*(volatile BYTE*)(ptr))
+#define    ST_WORD(ptr,val)    *(volatile BYTE*)(ptr)=(BYTE)(val); *(volatile BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8)
+#define    ST_DWORD(ptr,val)    *(volatile BYTE*)(ptr)=(BYTE)(val); *(volatile BYTE*)((ptr)+1)=(BYTE)((WORD)(val)>>8); *(volatile BYTE*)((ptr)+2)=(BYTE)((DWORD)(val)>>16); *(volatile BYTE*)((ptr)+3)=(BYTE)((DWORD)(val)>>24)
+#else
+#error Do not forget to set _MCU_ENDIAN properly!
+#endif
+
+#ifdef __cplusplus
+};
+#endif
+
+#define _FATFS
+#endif /* _FATFS */

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FatFileSystem/integer.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,30 @@
+/*-------------------------------------------*/
+/* Integer type definitions for FatFs module */
+/*-------------------------------------------*/
+
+#ifndef _INTEGER
+
+/* These types must be 16-bit, 32-bit or larger integer */
+typedef int                INT;
+typedef unsigned int    UINT;
+
+/* These types must be 8-bit integer */
+typedef signed char        CHAR;
+typedef unsigned char    UCHAR;
+typedef unsigned char    BYTE;
+
+/* These types must be 16-bit integer */
+typedef short            SHORT;
+typedef unsigned short    USHORT;
+typedef unsigned short    WORD;
+
+/* These types must be 32-bit integer */
+typedef long            LONG;
+typedef unsigned long    ULONG;
+typedef unsigned long    DWORD;
+
+/* Boolean type */
+typedef enum { FALSE = 0, TRUE } BOOL;
+
+#define _INTEGER
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDFileSystem.cpp	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,441 @@
+/* mbed Microcontroller Library - SDFileSystem
+ * Copyright (c) 2008-2009, sford
+ */
+ 
+// VERY DRAFT CODE! Needs serious rework/refactoring 
+ 
+/* Introduction
+ * ------------
+ * SD and MMC cards support a number of interfaces, but common to them all
+ * is one based on SPI. This is the one I'm implmenting because it means
+ * it is much more portable even though not so performant, and we already 
+ * have the mbed SPI Interface!
+ *
+ * The main reference I'm using is Chapter 7, "SPI Mode" of: 
+ *  http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
+ *
+ * SPI Startup
+ * -----------
+ * The SD card powers up in SD mode. The SPI interface mode is selected by
+ * asserting CS low and sending the reset command (CMD0). The card will 
+ * respond with a (R1) response.
+ *
+ * CMD8 is optionally sent to determine the voltage range supported, and 
+ * indirectly determine whether it is a version 1.x SD/non-SD card or 
+ * version 2.x. I'll just ignore this for now.
+ *
+ * ACMD41 is repeatedly issued to initialise the card, until "in idle"
+ * (bit 0) of the R1 response goes to '0', indicating it is initialised.
+ *
+ * You should also indicate whether the host supports High Capicity cards,
+ * and check whether the card is high capacity - i'll also ignore this
+ *
+ * SPI Protocol
+ * ------------
+ * The SD SPI protocol is based on transactions made up of 8-bit words, with
+ * the host starting every bus transaction by asserting the CS signal low. The
+ * card always responds to commands, data blocks and errors.
+ * 
+ * The protocol supports a CRC, but by default it is off (except for the 
+ * first reset CMD0, where the CRC can just be pre-calculated, and CMD8)
+ * I'll leave the CRC off I think! 
+ * 
+ * Standard capacity cards have variable data block sizes, whereas High 
+ * Capacity cards fix the size of data block to 512 bytes. I'll therefore
+ * just always use the Standard Capacity cards with a block size of 512 bytes.
+ * This is set with CMD16.
+ *
+ * You can read and write single blocks (CMD17, CMD25) or multiple blocks 
+ * (CMD18, CMD25). For simplicity, I'll just use single block accesses. When
+ * the card gets a read command, it responds with a response token, and then 
+ * a data token or an error.
+ * 
+ * SPI Command Format
+ * ------------------
+ * Commands are 6-bytes long, containing the command, 32-bit argument, and CRC.
+ *
+ * +---------------+------------+------------+-----------+----------+--------------+
+ * | 01 | cmd[5:0] | arg[31:24] | arg[23:16] | arg[15:8] | arg[7:0] | crc[6:0] | 1 |
+ * +---------------+------------+------------+-----------+----------+--------------+
+ *
+ * As I'm not using CRC, I can fix that byte to what is needed for CMD0 (0x95)
+ *
+ * All Application Specific commands shall be preceded with APP_CMD (CMD55).
+ *
+ * SPI Response Format
+ * -------------------
+ * The main response format (R1) is a status byte (normally zero). Key flags:
+ *  idle - 1 if the card is in an idle state/initialising 
+ *  cmd  - 1 if an illegal command code was detected
+ *
+ *    +-------------------------------------------------+
+ * R1 | 0 | arg | addr | seq | crc | cmd | erase | idle |
+ *    +-------------------------------------------------+
+ *
+ * R1b is the same, except it is followed by a busy signal (zeros) until
+ * the first non-zero byte when it is ready again.
+ *
+ * Data Response Token
+ * -------------------
+ * Every data block written to the card is acknowledged by a byte 
+ * response token
+ *
+ * +----------------------+
+ * | xxx | 0 | status | 1 |
+ * +----------------------+
+ *              010 - OK!
+ *              101 - CRC Error
+ *              110 - Write Error
+ *
+ * Single Block Read and Write
+ * ---------------------------
+ *
+ * Block transfers have a byte header, followed by the data, followed
+ * by a 16-bit CRC. In our case, the data will always be 512 bytes.
+ *  
+ * +------+---------+---------+- -  - -+---------+-----------+----------+
+ * | 0xFE | data[0] | data[1] |        | data[n] | crc[15:8] | crc[7:0] | 
+ * +------+---------+---------+- -  - -+---------+-----------+----------+
+ */
+ 
+#include "SDFileSystem.h"
+
+#define SD_COMMAND_TIMEOUT 5000
+
+SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name) :
+  FATFileSystem(name), _spi(mosi, miso, sclk), _cs(cs) {
+      _cs = 1; 
+}
+
+#define R1_IDLE_STATE           (1 << 0)
+#define R1_ERASE_RESET          (1 << 1)
+#define R1_ILLEGAL_COMMAND      (1 << 2)
+#define R1_COM_CRC_ERROR        (1 << 3)
+#define R1_ERASE_SEQUENCE_ERROR (1 << 4)
+#define R1_ADDRESS_ERROR        (1 << 5)
+#define R1_PARAMETER_ERROR      (1 << 6)
+
+// Types
+//  - v1.x Standard Capacity
+//  - v2.x Standard Capacity
+//  - v2.x High Capacity
+//  - Not recognised as an SD Card
+
+#define SDCARD_FAIL 0
+#define SDCARD_V1   1
+#define SDCARD_V2   2
+#define SDCARD_V2HC 3
+
+int SDFileSystem::initialise_card() {
+    // Set to 100kHz for initialisation, and clock card with cs = 1
+    _spi.frequency(100000); 
+    _cs = 1;
+    for(int i=0; i<16; i++) {   
+        _spi.write(0xFF);
+    }
+
+    // send CMD0, should return with all zeros except IDLE STATE set (bit 0)
+    if(_cmd(0, 0) != R1_IDLE_STATE) { 
+        fprintf(stderr, "No disk, or could not put SD card in to SPI idle state\n");
+        return SDCARD_FAIL;
+    }
+
+    // send CMD8 to determine whther it is ver 2.x
+    int r = _cmd8();
+    if(r == R1_IDLE_STATE) {
+        return initialise_card_v2();
+    } else if(r == (R1_IDLE_STATE | R1_ILLEGAL_COMMAND)) {
+        return initialise_card_v1();
+    } else {
+        fprintf(stderr, "Not in idle state after sending CMD8 (not an SD card?)\n");
+        return SDCARD_FAIL;
+    }
+}
+
+int SDFileSystem::initialise_card_v1() {
+    for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
+        _cmd(55, 0); 
+        if(_cmd(41, 0) == 0) { 
+            return SDCARD_V1;
+        }
+    }
+
+    fprintf(stderr, "Timeout waiting for v1.x card\n");
+    return SDCARD_FAIL;
+}
+
+int SDFileSystem::initialise_card_v2() {
+    
+    for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
+        _cmd(55, 0); 
+        if(_cmd(41, 0) == 0) { 
+            _cmd58();
+            return SDCARD_V2;
+        }
+    }
+
+    fprintf(stderr, "Timeout waiting for v2.x card\n");
+    return SDCARD_FAIL;
+}
+
+int SDFileSystem::disk_initialize() {
+
+    int i = initialise_card();
+//    printf("init card = %d\n", i);
+//    printf("OK\n");
+
+    _sectors = _sd_sectors();
+
+    // Set block length to 512 (CMD16)
+    if(_cmd(16, 512) != 0) {
+        fprintf(stderr, "Set 512-byte block timed out\n");
+        return 1;
+    }
+        
+    _spi.frequency(1000000); // Set to 1MHz for data transfer
+    return 0;
+}
+
+int SDFileSystem::disk_write(const char *buffer, int block_number) {
+    // set write address for single block (CMD24)
+    if(_cmd(24, block_number * 512) != 0) {
+        return 1;
+    }
+
+    // send the data block
+    _write(buffer, 512);    
+    return 0;    
+}
+
+int SDFileSystem::disk_read(char *buffer, int block_number) {        
+    // set read address for single block (CMD17)
+    if(_cmd(17, block_number * 512) != 0) {
+        return 1;
+    }
+    
+    // receive the data
+    _read(buffer, 512);
+    return 0;
+}
+
+int SDFileSystem::disk_status() { return 0; }
+int SDFileSystem::disk_sync() { return 0; }
+int SDFileSystem::disk_sectors() { return _sectors; }
+
+// PRIVATE FUNCTIONS
+
+int SDFileSystem::_cmd(int cmd, int arg) {
+    _cs = 0; 
+
+    // send a command
+    _spi.write(0x40 | cmd);
+    _spi.write(arg >> 24);
+    _spi.write(arg >> 16);
+    _spi.write(arg >> 8);
+    _spi.write(arg >> 0);
+    _spi.write(0x95);
+
+    // wait for the repsonse (response[7] == 0)
+    for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
+        int response = _spi.write(0xFF);
+        if(!(response & 0x80)) {
+            _cs = 1;
+            _spi.write(0xFF);
+            return response;
+        }
+    }
+    _cs = 1;
+    _spi.write(0xFF);
+    return -1; // timeout
+}
+int SDFileSystem::_cmdx(int cmd, int arg) {
+    _cs = 0; 
+
+    // send a command
+    _spi.write(0x40 | cmd);
+    _spi.write(arg >> 24);
+    _spi.write(arg >> 16);
+    _spi.write(arg >> 8);
+    _spi.write(arg >> 0);
+    _spi.write(0x95);
+
+    // wait for the repsonse (response[7] == 0)
+    for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
+        int response = _spi.write(0xFF);
+        if(!(response & 0x80)) {
+            return response;
+        }
+    }
+    _cs = 1;
+    _spi.write(0xFF);
+    return -1; // timeout
+}
+
+
+int SDFileSystem::_cmd58() {
+    _cs = 0; 
+    int arg = 0;
+    
+    // send a command
+    _spi.write(0x40 | 58);
+    _spi.write(arg >> 24);
+    _spi.write(arg >> 16);
+    _spi.write(arg >> 8);
+    _spi.write(arg >> 0);
+    _spi.write(0x95);
+
+    // wait for the repsonse (response[7] == 0)
+    for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
+        int response = _spi.write(0xFF);
+        if(!(response & 0x80)) {
+            int ocr = _spi.write(0xFF) << 24;
+            ocr |= _spi.write(0xFF) << 16;
+            ocr |= _spi.write(0xFF) << 8;
+            ocr |= _spi.write(0xFF) << 0;
+//            printf("OCR = 0x%08X\n", ocr);
+            _cs = 1;
+            _spi.write(0xFF);
+            return response;
+        }
+    }
+    _cs = 1;
+    _spi.write(0xFF);
+    return -1; // timeout
+}
+
+int SDFileSystem::_cmd8() {
+    _cs = 0; 
+    
+    // send a command
+    _spi.write(0x40 | 8); // CMD8
+    _spi.write(0x00);     // reserved
+    _spi.write(0x00);     // reserved
+    _spi.write(0x01);     // 3.3v
+    _spi.write(0xAA);     // check pattern
+    _spi.write(0x87);     // crc
+
+    // wait for the repsonse (response[7] == 0)
+    for(int i=0; i<SD_COMMAND_TIMEOUT * 1000; i++) {
+        char response[5];
+        response[0] = _spi.write(0xFF);
+        if(!(response[0] & 0x80)) {
+                for(int j=1; j<5; j++) {
+                    response[i] = _spi.write(0xFF);
+                }
+                _cs = 1;
+                _spi.write(0xFF);
+                return response[0];
+        }
+    }
+    _cs = 1;
+    _spi.write(0xFF);
+    return -1; // timeout
+}
+
+int SDFileSystem::_read(char *buffer, int length) {
+    _cs = 0;
+
+    // read until start byte (0xFF)
+    while(_spi.write(0xFF) != 0xFE);
+
+    // read data
+    for(int i=0; i<length; i++) {
+        buffer[i] = _spi.write(0xFF);
+    }
+    _spi.write(0xFF); // checksum
+    _spi.write(0xFF);
+
+    _cs = 1;    
+    _spi.write(0xFF);
+    return 0;
+}
+
+int SDFileSystem::_write(const char *buffer, int length) {
+    _cs = 0;
+    
+    // indicate start of block
+    _spi.write(0xFE);
+    
+    // write the data
+    for(int i=0; i<length; i++) {
+        _spi.write(buffer[i]);
+    }
+    
+    // write the checksum
+    _spi.write(0xFF); 
+    _spi.write(0xFF);
+
+    // check the repsonse token
+    if((_spi.write(0xFF) & 0x1F) != 0x05) {
+        _cs = 1;
+        _spi.write(0xFF);        
+        return 1;
+    }
+
+    // wait for write to finish
+    while(_spi.write(0xFF) == 0);
+
+    _cs = 1; 
+    _spi.write(0xFF);
+    return 0;
+}
+
+static int ext_bits(char *data, int msb, int lsb) {
+    int bits = 0;
+    int size = 1 + msb - lsb; 
+    for(int i=0; i<size; i++) {
+        int position = lsb + i;
+        int byte = 15 - (position >> 3);
+        int bit = position & 0x7;
+        int value = (data[byte] >> bit) & 1;
+        bits |= value << i;
+    }
+    return bits;
+}
+
+int SDFileSystem::_sd_sectors() {
+
+    // CMD9, Response R2 (R1 byte + 16-byte block read)
+    if(_cmdx(9, 0) != 0) {
+        fprintf(stderr, "Didn't get a response from the disk\n");
+        return 0;
+    }
+    
+    char csd[16];    
+    if(_read(csd, 16) != 0) {
+        fprintf(stderr, "Couldn't read csd response from disk\n");
+        return 0;
+    }
+
+    // csd_structure : csd[127:126]
+    // c_size        : csd[73:62]
+    // c_size_mult   : csd[49:47]
+    // read_bl_len   : csd[83:80] - the *maximum* read block length
+
+    int csd_structure = ext_bits(csd, 127, 126);
+    int c_size = ext_bits(csd, 73, 62);
+    int c_size_mult = ext_bits(csd, 49, 47);
+    int read_bl_len = ext_bits(csd, 83, 80);
+
+//    printf("CSD_STRUCT = %d\n", csd_structure);
+    
+    if(csd_structure != 0) {
+        fprintf(stderr, "This disk tastes funny! I only know about type 0 CSD structures\n");
+        return 0;
+    }
+             
+    // memory capacity = BLOCKNR * BLOCK_LEN
+    // where
+    //  BLOCKNR = (C_SIZE+1) * MULT
+    //  MULT = 2^(C_SIZE_MULT+2) (C_SIZE_MULT < 8)
+    //  BLOCK_LEN = 2^READ_BL_LEN, (READ_BL_LEN < 12)         
+                            
+    int block_len = 1 << read_bl_len;
+    int mult = 1 << (c_size_mult + 2);
+    int blocknr = (c_size + 1) * mult;
+    int capacity = blocknr * block_len;
+        
+    int blocks = capacity / 512;
+        
+    return blocks;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDFileSystem.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,66 @@
+/* mbed Microcontroller Library - SDFileSystem
+ * Copyright (c) 2008-2009, sford
+ */
+ 
+// VERY DRAFT CODE!!! 
+
+#ifndef SDFILESYSTEM_H
+#define SDFILESYSTEM_H
+
+#include "mbed.h"
+#include "FATFileSystem.h"
+
+/* Class: SDFileSystem
+ *  Access the filesystem on an SD Card using SPI
+ *
+ * Example:
+ * > SDFileSystem sd(p5, p6, p7, p12, "sd");
+ * > 
+ * > int main() {
+ * >     FILE *fp = fopen("/sd/myfile.txt", "w");
+ * >     fprintf(fp, "Hello World!\n");
+ * >     fclose(fp);
+ * > }
+ */
+class SDFileSystem : public FATFileSystem {
+public:
+
+    /* Constructor: SDFileSystem
+     *  Create the File System for accessing an SD Card using SPI
+     *
+     * Variables:
+     *  mosi - SPI mosi pin connected to SD Card
+     *  miso - SPI miso pin conencted to SD Card
+     *  sclk - SPI sclk pin connected to SD Card
+     *  cs   - DigitalOut pin used as SD Card chip select
+   *  name - The name used to access the filesystem
+     */
+    SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
+    virtual int disk_initialize();
+    virtual int disk_write(const char *buffer, int block_number);
+    virtual int disk_read(char *buffer, int block_number);    
+    virtual int disk_status();
+    virtual int disk_sync();
+    virtual int disk_sectors();
+
+protected:
+
+    int _cmd(int cmd, int arg);
+    int _cmdx(int cmd, int arg);
+    int _cmd8();
+    int _cmd58();
+    int initialise_card();
+    int initialise_card_v1();
+    int initialise_card_v2();
+    
+    
+    int _read(char *buffer, int length);
+    int _write(const char *buffer, int length);
+    int _sd_sectors();
+    int _sectors;
+    
+    SPI _spi;
+    DigitalOut _cs;     
+};
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD.lib	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,1 @@
+TextLCD#27620595ebc5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/beep.lib	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/dreschpe/code/beep/#d8e14429a95f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/log.h	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,4 @@
+#define LOGFILE "/sd/canary.log"
+extern bool LogCreated;
+void Log (char *message);
+void LogErr (char *message);
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,157 @@
+#include "mbed.h"
+#include "CAN.h"
+#include "TextLCD.h"
+#include "SDFileSystem.h"
+#include "DebounceIn.h"
+#include "log.h"
+#include "beep.h"
+
+//VP230
+//1:D   8:RS
+//2:GND 7:CANH
+//3:VCC 6:CANL
+//4:R   5:Vref
+
+//LPC1768
+//1:    VSS
+//2:        NC:VIN
+//3:        NC:VB
+//4:        NC:nR
+//5:    SPI:MOSI   -->  6:SDRAM:DI
+//6:    SPI:MISO   -->  2:SDRAM:DO
+//7:    SPI:SCLK   -->  4:SDRAM:SCLK
+//8:    CS         -->  7:SDRAM:CS
+//9:    CAN1:TX    -->  1:CAN1:D
+//10:   CAN1:RX    -->  4:CAN1:R
+//11:   RS         -->  4:LCD:RS
+//12:   E          -->  6:LCD:E
+//13:   D4         -->  11:LCD:D4
+//14:   D5         -->  12:LCD:D5
+//15:   D6         -->  13:LCD:D6
+//16:   D7         -->  14:LCD:D7
+//17:   CD         -->  1:SDRAM:CD
+//18:       NC:Ain
+//19:   PB2
+//20:   PB1
+//21:   Spkr+
+//22:       NC:pwm
+//23:       NC:pwm
+//24:       NC:pwm
+//25:       NC:pwm
+//26:       NC:pwm
+//27:   CAN1:Sleep -->  8:CAN1:RS
+//28:   CAN2:Sleep -->  8:CAN2:RS
+//29:   CAN2:RX    -->  4:CAN2:R
+//30:   CAN2:TX    -->  1:CAN2:D
+//31:       NC:USB_D+
+//32:       NC:USB_D-
+//33:       NC:Eth_TD+
+//34:       NC:Eth_TD-
+//35:       NC:Eth_RD+
+//36:       NC:Eth_RD-
+//37:       NC:IF+
+//38:       NC:IF-
+//39:       NC:5Vout
+//40:   VCC3.3
+
+Beep buzzer(p21);
+DigitalIn  CD( p17 ); 
+DigitalIn  PB1( p20 ); 
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name)
+TextLCD lcd(p11, p12, p13, p14, p15, p16); // rs, e, d0-d3 (RW to GND)
+Ticker ticker;
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+CAN can1(p9, p10);      // CAN1 uses pins 9 and 10 (tx, rx)
+CAN can2(p30, p29);     // CAN2 uses pins 30 and 29 (tx, rx)
+bool LogCreated = false;
+char logMsg[64];
+
+char counter = 0;
+//DigitalOut can1_SleepMode(p11);     // Use pin 11 to control the sleep mode of can1
+//DigitalOut can2_SleepMode(p28);     // Use pin 28 to control the sleep mode of can2
+Serial pc(USBTX, USBRX); // tx, rx   default settings (9600 8N1)
+
+void Log (char *message)
+{
+    FILE *file;
+
+    if (!LogCreated) {
+        file = fopen(LOGFILE, "w");
+        LogCreated = true;
+    }
+    else
+        file = fopen(LOGFILE, "a");
+
+    if (file == NULL) {
+        if (LogCreated)
+            LogCreated = false;
+        return;
+    }
+    else
+    {
+        fputs(message, file);
+        //fprintf(file, message);
+        fclose(file);
+    }
+
+    if (file)
+        fclose(file);
+}
+
+
+void send() {
+    if(can1.write(CANMessage(0x350, &counter, 1))) {
+        counter++;
+        pc.printf("Message %d sent\n", counter);
+        lcd.printf("sent: %d  \n", counter);
+        if(LogCreated) {
+            if((PB1==0)||(CD==0)){
+                LogCreated=false;
+                pc.printf("Stopping log\n", counter);
+            }else{
+                sprintf(logMsg, "sent: %d \n", counter);
+                Log(logMsg);
+                pc.printf("Message logged\n");
+                buzzer.beep(800,0.025);              }
+        }
+    } 
+    led1 = !led1;
+}
+ 
+void recieve1() {
+    static CANMessage msg1;
+    can1.read(msg1);
+    pc.printf("Can1 Message received: %d\n", msg1.data[0]);
+    lcd.printf("Can1 rxd: %d\n", msg1.data[0]);
+    led2 = !led2;
+}
+void recieve2() {
+    static CANMessage msg2;
+    can2.read(msg2);
+    pc.printf("Can2 Message received: %d\n", msg2.data[0]);
+    lcd.printf("Can2 rxd: %d\n", msg2.data[0]);
+    led3 = !led3;
+}
+
+int main() {
+    pc.baud(115200);        // change serial interface to pc to 115200, 8N1
+    can1.frequency(100000);
+    can2.frequency(100000);
+    //can1_SleepMode = 0;         // Turn off Sleep Mode
+    //can2_SleepMode = 0;         // Turn off Sleep Mode
+    CD.mode(PullUp) ; //SDRAM Chip Detect
+    PB1.mode(PullUp) ; //Pushbutton 1
+    ticker.attach(&send, 1);
+    can1.attach(&recieve1);
+    can2.attach(&recieve2);
+    if(CD == 1) {
+        pc.printf("Starting Can Log\n");
+        Log("Starting Can Log\n");
+        } 
+    else {
+        pc.printf("No SDRAM Inserted.\n");
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Nov 19 04:44:11 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/e2ed12d17f06
\ No newline at end of file