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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Create a file and write into mmc is OK But ????? |
 Posted: Mon Apr 25, 2011 1:48 pm |
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|
Hello Friends.
I'm sorry to speak English first.
I know created the file into the MMC but the data file is missing characters inside the EVENTS.LOG and is the space between characters.
I do not know where I'm wrong. Waiting for your help.
Would you look at Codes
My main Code:
| Code: |
#include <18F4620.h>
#include <string.h>
#include <MMC_SPI_FAT32.h>
#fuses HS,NOWDT,NOPROTECT,BROWNOUT,NOLVP,NOCPD
#use delay(clock=10000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8)
#include "2x16_4x20_LCD.c"
#include "MMC_SPI_FAT32.c"
void main(){
delay_ms(1000);
char f,gfilename[12];
char msg[100];
// setup();
lcd_init();
LCD_gotoxy(1,1);
printf(lcd_putc,"MMC CONTROL");
if(MMCInit() == MMC_OK) {
LCD_gotoxy(1,1);
printf(lcd_putc,"MMC init OK\n");
delay_ms(1000);
InitFAT();
LCD_gotoxy(1,2);
printf(lcd_putc,"FAT init OK\n");
delay_ms(1000);
printf(lcd_putc,"\f");
strcpy(gfilename,"EVENTS.LOG");
f = fopen(gfilename,'a'); // open EVENTS.LOG for append
if (f & MMC_ERROR)
{
printf(lcd_putc,"Couldn't open file!");
if(f == MMC_NO_CARD_INSERTED)
printf(lcd_putc,"Please, insert MMC!");
else if(f == MMC_MAX_FILES_REACHED)
printf(lcd_putc,"ops.. =)");
}
else
{
printf(lcd_putc,"\f");
LCD_gotoxy(1,1);
printf(lcd_putc,"START Writing");
strcpy(msg,"System Start :)");
fputstring(msg,f);
LCD_gotoxy(1,2);
printf(lcd_putc,msg);
delay_ms(10);
fclose(f);
delay_ms(1000);
printf(lcd_putc,"\f");
LCD_gotoxy(1,1);
printf(lcd_putc,"Writing completed");
}
}
}
//+++++++++++++++++++++++++++++++++++++++++++++++++++
|
MMC_SPI_FAT32.c
| Code: |
// If you want to use software SPI keep this line uncommented
// If you want to use hardware SPI comment this line..
// Software SPI are slower, but you can use any clock and data
// pins that you want..
#define MMC_SPI_SOFTWARE
// Change the port to whatever port you are going to use
#use FAST_IO(C)
// Change this to set the right tris for your pins
#define SET_MMC_TRIS() set_tris_C(0x10) // 0b0001000 1=input,0=output
// Change these pins to whatever pins you are using
#define ChipSel pin_C2 // Chip-Select pin
#define ChipClk pin_C3 // SPI-Clock pin
#define ChipDout pin_C5 // SPI-Data out pin
#define ChipDin pin_C4 // SPI-Data in pin
#ifdef MMC_SPI_SOFTWARE
// You can also specify a baud-rate in the line below, if not the fastest possible speed will be used.
// For me that was 800kHz on a 18F4550 with 48MHz external clock
#USE SPI(MASTER, SAMPLE_RISE, MSB_FIRST, IDLE=1, DI=ChipDin, DO=ChipDout, CLK=ChipClk, BITS=8, STREAM=MMC_SPI)
#define MMC_Xfer(a) SPI_Xfer(MMC_SPI,a)
#else
// If MMC_SPI_SOFTWARE isn't defined (se above) these variables are used, you should check if they
// matches your target device, but for most pic's they should do
#byte SSPBUF = 0xFC9
#byte SSPSTAT = 0xFC7
#byte SSPCON1 = 0xFC6
#bit BF = SSPSTAT.0
#endif
#ifdef ENABLE_FILELISTNG
#include <STDLIBM.H> // used for malloc and free functions
#endif
int32 FATTable[128];
int32 gFirstEmptyCluster;
FAT32Vars gFAT32Vars;
diskinforec DiskInfo;
FILE gFiles[MAXFILES];
// Time stores the date and time, this is used when writing and/or creating files
TimeRecord Time;
#ifdef ENABLE_FILELISTNG
// Set the maximum number of files/dirs to be listed by Listfile()
#define MAX_FILE_LIST 10
// Variables used by InitList(), ListFiles(), NextPage() and SetPage()
ListPos StartList;
ListPos CurrentList;
BOOLEAN changeList; // Do not use this; it is only used by SetPage() and ListFiles() and Initialized by InitFAT()
// The result of ListFiles() function..
LongFileName FileList[MAX_FILE_LIST];
#endif
#byte MMCAddressL = gFAT32Vars
#byte MMCAddressH = gFAT32Vars+1
#byte MMCAddressHL = gFAT32Vars+2
#byte MMCAddressHH = gFAT32Vars+3
#byte gStartSectorL = gFAT32Vars+8
#byte gStartSectorH = gFAT32Vars+9
#byte gStartSectorHL = gFAT32Vars+10
// You should check that these values matches your pic device
// but for most devices they should be correct
#define FSR0L *0xFE9
#define POSTINC0 *0xFEE
// A bunch of error codes
#define MMC_OK 0
#define MMC_ERROR 0x80
#define MMC_INVALID_FILE 0x88
#define MMC_MAX_FILES_REACHED 0x90
#define MMC_NO_CARD_INSERTED 0x98
#define MMC_TIME_OUT 0xA0
#define MMC_INVALID_RESPONSE 0xA8
#define MMC_NOT_FOUND 0xB0
#define MMC_INVALID_CLUSTER 0xB8
#define MMC_END_OF_DIR 0xC0
#define MMC_INVALID_POSITION 0xC8
// I don't like having constants in the code... yeah, I do have some anyway ;)
#define END_OF_DIR 17
#define DIRENTRYS_PER_SECTOR 16
#define CHARACTERS_IN_LONG_FILENAMES 13
// If you want to have a cardinserted sens-pin, define CardInserted to a input, like:
// #define CardInserted !input(PIN_XX)
// MMC Card have two GND pins, pull one up with a resistor (10K or somwthing like that) to Vcc
// and connect to desired pin
#define CardInserted() 1
// Looks a bit nicer in the code
#define MMC_Select() output_low(ChipSel)
#define MMC_Deselect() output_high(ChipSel)
// Below this, there should be no need to change anything
char IsSelfDir(char *be)
{
if (be[0] == '.' && be[1] == '.')
return 0xFF;
else
return 0;
}
void MMCOut(char indata)
{
#ifdef MMC_SPI_SOFTWARE
MMC_Xfer(indata);
#else
char i;
SSPBUF=indata;
while (!BF);
i = SSPBUF;
#endif
}
void MMC8Clock()
{
#ifdef MMC_SPI_SOFTWARE
MMC_Xfer(0xFF);
#else
char i;
SSPBUF=0xFF;
while (!BF);
i = SSPBUF;
#endif
}
char MMCIn()
{
#ifdef MMC_SPI_SOFTWARE
return MMC_Xfer(0xFF);
#else
char i;
SSPBUF=0xFF;
while (!BF);
i = SSPBUF;
return i;
#endif
}
MMCResponse MMCInit()
{
char response,iii,errcnt;
if (!CardInserted())
return MMC_NO_CARD_INSERTED;
SET_MMC_TRIS(); // Set input/output
restart_wdt();
MMC_Deselect();
#ifndef MMC_SPI_SOFTWARE
bit_clear(SSPCON1,5); // Disables serial port and configures these pins as I/O port pins
SSPCON1 = 0x30; // modify this number to change SPI clock rate
// Enables serial port and configures SCK, SDO, SDI and SS as serial port pins
// Idle state for clock is a high level
// 0000 = SPI Master mode, clock = FOSC/4
SSPSTAT = 0; // Only bit 6,7 are writable
// 0 = Input data sampled at middle of data output time
// 0 = Transmit occurs on transition from Idle to active clock state
#endif
iii = 10;
errcnt = 100;
do
{
MMCOut(0xFF);
} while (--iii);
delay_us(1000);
MMC_Select(); // if the /CS line of the MMC is low during CMD0,(below), the card enters SPI-mode
MMCOut(0x40); // CMD0
MMCOut(0x00);
MMCOut(0x00);
MMCOut(0x00);
MMCOut(0x00);
MMCOut(0x95); // CRC
MMC8Clock();
response = MMCIn();
MMC_Deselect();
do
{
delay_us(1000);
//output_low(ChipClk);
MMC_Select();
MMCOut(0x41); // CMD1
MMCOut(0x00);
MMCOut(0x00);
MMCOut(0x00);
MMCOut(0x00);
MMCOut(0x01);
MMC8Clock();
response = MMCIn();
MMC_Deselect();
MMC8Clock();
errcnt--;
} while (response && errcnt);
if(response == 0)
return MMC_OK;
else
return MMC_TIME_OUT;
}
// "Packed" Date:
// +-------+------------+-------+-----+
// | BITS | 15:9 | 8:5 | 4:0 |
// | VALUE |Year – 1980 | Month | Day |
// +-------+------------+-------+-----+
int16 GetCurrentDOSDate()
{
int16 retval;
retval = Time.Year - 1980;
retval <<= 9;
retval |= ((int16)Time.Month << 5);
retval |= (int16)Time.Day;
return retval;
}
// "Packed" Time:
// +-------+-------+--------+----------+
// | BITS | 15:11 | 10:5 | 4:0 |
// | VALUE | Hour | Minute | Second/2 |
// +-------+-------+--------+----------+
int16 GetCurrentDOSTime()
{
int16 retval;
retval = Time.Hour;
retval <<= 11;
retval |= ((int16)Time.Minute << 5);
retval |= (int16)Time.Second >> 1;
return retval;
}
// Function: Reads a sector from MMC
MMCResponse ReadSector(int32 sector, char *hova)
{
char errs,response;
char cnt2,cnt3;
#byte sectorL = sector
#byte sectorH = sector+1
#byte sectorHL = sector+2
if (!CardInserted())
return MMC_NO_CARD_INSERTED;
Disable_interrupts(GLOBAL);
Restart_wdt();
MMCAddressL = 0;
MMCAddressH = sectorL;
MMCAddressHL = sectorH;
MMCAddressHH = sectorHL;
gFAT32Vars.MMCAddress <<= 1;
MMC_Select();
MMCOut(0x51);
MMCOut(MMCAddressHH);
MMCOut(MMCAddressHL);
MMCOut(MMCAddressH & 0xFE);
MMCOut(0);
MMCOut(0x01);
errs = 8;
do
{
response = MMCIn();
} while (--errs && response==0xFF);
errs = 50;
do
{
response = MMCIn();
if (response == 0xFE)
break;
delay_ms(1);
} while (--errs);
FSR0L = (int16)hova; // *0xFE9
cnt3 = 2;
cnt2 = 0;
do
{
do
{
#ifdef MMC_SPI_SOFTWARE
POSTINC0 = MMC_Xfer(0xFF); // *0xFEE
#else
SSPBUF=0xFF; // Writes 0xFF on SPI
while(!BF); // Wait until Transmitted/Received
POSTINC0 = SSPBUF; // Read the received byte and place it in adress oxFEE
#endif
} while (--cnt2);
} while (--cnt3);
response = MMCIn();
response = MMCIn();
MMC_Deselect();
Enable_interrupts(GLOBAL);
return MMC_OK;
}
// Writes a sector to MMC
MMCResponse WriteSector(int32 sector, char *honnan)
{
char errs,response;
char cnt2,cnt3;
#byte sectorL = sector
#byte sectorH = sector+1
#byte sectorHL = sector+2
if (!CardInserted())
return MMC_NO_CARD_INSERTED;
Disable_interrupts(GLOBAL);
Restart_wdt();
MMCAddressL = 0;
MMCAddressH = sectorL;
MMCAddressHL = sectorH;
MMCAddressHH = sectorHL;
gFAT32Vars.MMCAddress <<= 1;
response = 0;
//output_low(ChipClk);
MMC_Select();
MMCOut(0x58);
MMCOut(MMCAddressHH);
MMCOut(MMCAddressHL);
MMCOut(MMCAddressH & 0xFE);
MMCOut(0);
MMCOut(0x01);
MMC8Clock();
errs = 8;
do
{
response = MMCIn();
} while (--errs && response==0xFF);
if (response)
{
MMC_Deselect();
//output_high(ChipClk);
MMC8Clock();
Enable_interrupts(GLOBAL);
return MMC_INVALID_RESPONSE;
}
MMC8Clock();
MMCOut(0xFE);
FSR0L = (int16)honnan; // *0xFE9
cnt3 = 2;
cnt2 = 0;
do
{
do
{
#ifdef MMC_SPI_SOFTWARE
MMC_Xfer(POSTINC0); // *0xFEE
#else
SSPBUF=POSTINC0; // Write the byte on address oxFEE to SPI
while (!BF);
dummy= SSPBUFF ; dummy read to clear status bits
#endif
} while (--cnt2);
} while (--cnt3);
MMCOut(0x00);
MMCOut(0x01);
response = MMCIn();
response ^= 0xE5; // Bitwise exclusive or assignment operator, x^=y, is the same as x=x^y
if (response)
{
goto endwr3;
}
do
{
response = MMCIn();
} while (response == 0);
response = 0;
endwr3:
MMC_Deselect();
//output_high(ChipClk);
MMC8Clock();
Enable_interrupts(GLOBAL);
return MMC_OK;
}
// Function: Initializes the FAT system
void InitFAT()
{
int32 actsector;
char i;
gFirstEmptyCluster = 0;
gFAT32Vars.gStartSector = 0;
ReadSector(gFAT32Vars.gStartSector,gFiles[MAXFILES-1].IOpuffer);
if (gFiles[MAXFILES-1].IOpuffer[0] != 0xEB)
{
gStartSectorL = gFiles[MAXFILES-1].IOpuffer[0x1C6];
gStartSectorH = gFiles[MAXFILES-1].IOpuffer[0x1C7];
gStartSectorHL = gFiles[MAXFILES-1].IOpuffer[0x1C8];
ReadSector(gFAT32Vars.gStartSector,gFiles[MAXFILES-1].IOpuffer);
}
memcpy(&DiskInfo,gFiles[MAXFILES-1].IOpuffer,sizeof(DiskInfo));
actsector = gFAT32Vars.gStartSector+DiskInfo.Reserved1;
ReadSector(actsector,FATTable);
gFAT32Vars.FATstartidx = 0;
gFAT32Vars.gFirstDataSector = gFAT32Vars.gStartSector + DiskInfo.FATCopies*DiskInfo.hSectorsPerFat+DiskInfo.Reserved1 - 2;
for (i=0;i<MAXFILES;i++)
{
gFiles[i].Free = TRUE;
}
#ifdef ENABLE_FILELISTNG
// Code for initializing file-listing
for(i=0;i<MAX_FILE_LIST;i++)
FileList[i].name = NULL;
changeList = TRUE;
#endif
// MMC_Debug("-FATInit ");
}
int32 GetNextCluster(int32 curcluster)
{
int32 actsector;
int32 clpage;
char clpos;
clpage = curcluster >> 7;
clpos = curcluster & 0x7F;
if (clpage != gFAT32Vars.FATstartidx) // read in the requested page
{
actsector = gFAT32Vars.gStartSector+DiskInfo.Reserved1 + clpage;
ReadSector(actsector,FATTable);
gFAT32Vars.FATstartidx = clpage;
}
return (FATTable[clpos]);
}
void SetClusterEntry(int32 curcluster,int32 value)
{
int32 actsector;
int32 clpage;
char clpos;
clpage = curcluster >> 7;
clpos = curcluster & 0x7F;
actsector = gFAT32Vars.gStartSector+DiskInfo.Reserved1 + clpage;
if (clpage != gFAT32Vars.FATstartidx)
{
ReadSector(actsector,FATTable);
gFAT32Vars.FATstartidx = clpage;
}
FATTable[clpos] = value;
WriteSector(actsector,FATTable);
actsector += DiskInfo.hSectorsPerFat;
WriteSector(actsector,FATTable);
}
void ClearClusterEntry(int32 curcluster)
{
int32 actsector;
int32 clpage;
char clpos;
clpage = curcluster >> 7;
clpos = curcluster & 0x7F;
if (clpage != gFAT32Vars.FATstartidx)
{
actsector = gFAT32Vars.gStartSector+DiskInfo.Reserved1 + gFAT32Vars.FATstartidx;
WriteSector(actsector,FATTable);
actsector += DiskInfo.hSectorsPerFat;
WriteSector(actsector,FATTable);
actsector = gFAT32Vars.gStartSector+DiskInfo.Reserved1 + clpage;
ReadSector(actsector,FATTable);
gFAT32Vars.FATstartidx = clpage;
}
FATTable[clpos] = 0;
}
int32 FindFirstFreeCluster()
{
int32 i,st,actsector,retval;
char j;
st = gFirstEmptyCluster;
for (i=st;i<DiskInfo.hSectorsPerFat;i++)
{
if (i != gFAT32Vars.FATstartidx)
{
actsector = gFAT32Vars.gStartSector+DiskInfo.Reserved1 + i;
ReadSector(actsector,FATTable);
gFAT32Vars.FATstartidx = gFirstEmptyCluster = i;
}
for (j=0;j<128;j++)
{
if (FATTable[j] == 0)
{
retval = i;
retval <<= 7;
retval |= j;
return retval;
}
}
}
return 0x0FFFFFFF;
}
// Function: Converts a dir-entry to a 8.3 filename
void ConvertFilename(DIR *beDir,char *name)
{
char i,j,c;
j = 0;
name[0] = 0;
for (i=0;i<8;i++)
{
c = beDir->sName[i];
if (c == ' ')
break;
name[j++] = c;
}
for (i=0;i<3;i++)
{
c = beDir->spam[i];
if (c == ' ' || c == 0)
break;
if (!i)
name[j++] = '.';
name[j++] = c;
}
name[j++] = 0;
}
// Function: Converts a dir-entry to a (part of a) long filename.
// One dir-entry can hold 13 unicode characters
void ConvertLongFilename(DIR *beDir,char *name)
{
char i,j,c;
j = 0;
name[0] = 0;
for (i=1;i<11;i+=2)
{
c = (char)(*(((char*)beDir)+i));
if (c == 0x00 || c == 0xFF)
break;
name[j++] = c;
}
if(c!=0x00 && c!= 0xFF)
{
for (i=14;i<26;i+=2)
{
c = (char)(*(((char*)beDir)+i));;
if (c == 0 || c == 0xFF)
break;
name[j++] = c;
}
if(c!=0x00 && c != 0xFF)
{
for (i=28;i<31;i+=2)
{
c = (char)(*(((char*)beDir)+i));
if (c == 0 || c == 0xFF)
break;
name[j++] = c;
}
}
}
name[j++] = 0;
}
void GetDOSName(DIR *pDir, char *fname)
{
char i,j,leng,c,toext;
toext = FALSE;
j = 0;
leng = strlen(fname);
for (i=0;i<8;i++)
pDir->sName[i] = ' ';
for (i=0;i<3;i++)
pDir->spam[i] = ' ';
for (i=0;i<leng;i++)
{
c = fname[i];
c = toupper(c);
if (c == '.')
{
toext = TRUE;
continue;
}
if (toext)
pDir->spam[j++] = c;
else
pDir->sName[i] = c;
}
}
// Function: Sets the file f to root dir
MMCResponse ReadRootDirectory(char fil)
{
int32 actsector;
if (fil > (MAXFILES-1))
return MMC_INVALID_FILE;
actsector = gFAT32Vars.gStartSector + DiskInfo.FATCopies*DiskInfo.hSectorsPerFat+DiskInfo.Reserved1;
ReadSector(actsector,gFiles[fil].IOpuffer);
gFAT32Vars.gDirEntrySector = actsector;
gFiles[fil].dirSector = actsector;
gFiles[fil].dirIdx = 0;
memcpy(&(gFiles[fil].DirEntry),gFiles[fil].IOpuffer,32);
gFiles[fil].CurrentCluster = DiskInfo.hRootStartCluster;
return MMC_OK;
}
// Funciton: Finds a file
char FindDirEntry(char *fname,char f)
{
DIR *pDir;
int16 i;
char filename[16];
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
{
return FALSE;
}
gFAT32Vars.gFirstEmptyDirEntry = 0xFF;
gFAT32Vars.gFirstDirEntryCluster = 0x0FFFFFFF;
do
{
pDir = (DIR*)(gFiles[f].IOpuffer);
for (i=0;i<DIRENTRYS_PER_SECTOR;i++)
{
if ((pDir->sName[0] == 0xE5 || pDir->sName[0] == 0) && gFAT32Vars.gFirstEmptyDirEntry == 0xFF) // store first free
{
gFAT32Vars.gFirstEmptyDirEntry = i;
gFAT32Vars.gFirstDirEntryCluster = gFiles[f].CurrentCluster;
}
if (pDir->sName[0] == 0)
{
return FALSE;
}
ConvertFilename(pDir,filename);
if (!strcmp(filename,fname))
{
memcpy(&(gFiles[f].DirEntry),pDir,32);
gFiles[f].dirIdx = i;
gFAT32Vars.gDirEntryIdx = i;
return TRUE;
}
pDir++;
}
nextcluster = GetNextCluster(gFiles[f].CurrentCluster);
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFAT32Vars.gDirEntrySector = actsector;
gFiles[f].dirSector = actsector;
gFiles[f].CurrentCluster = nextcluster;
}
} while (nextcluster != 0x0FFFFFFF && nextcluster != 0);
return FALSE;
}
// Function: Assign a filenumber(f) and open the directory
// where the file are and return the filename.
char* TryFile(char *fname, char *f)
{
char i,leng;
char *filename;
*f = 0xFF;
for (i=0;i<MAXFILES;i++)
{
if (gFiles[i].Free)
{
*f = i;
break;
}
}
if (*f == 0xFF)
{
return 0;
}
ReadRootDirectory(*f);
filename = fname;
leng = strlen(fname);
for (i=0;i<leng;i++)
{
if (fname[i] == '/')
{
fname[i] = 0;
if (!cwd(filename,*f))
{
gFiles[*f].Free = TRUE;
return 0;
}
filename = fname+i+1;
}
}
return filename;
}
void strfill(char *dest,char *source,int position)
{
char *d;
for(d=dest+position; *source!=0; d++, source++)
{
*d = *source;
}
}
// Parameters: path, the path to the directory you
// want to view
// Function : Initializes file/dir listing
// Examples:
// strcpy(path,""); // the "path" to the root directory
// f = InitList(path);
// ...
// strcpy(path,"DIR3/DIR32/");
// f = InitList(path);
// if(InitList == MMC_OK)
// {
// res = Listfiles(f);
// CloseList(f);
// }
#ifdef ENABLE_FILELISTNG
MMCResponse InitList(char *path)
{
char f;
if(TryFile(path,&f) == 0)
{
return MMC_NOT_FOUND;
}
gFiles[f].Free = FALSE;
StartList.dirSector = gFiles[f].dirSector;
StartList.CurrentCluster = gFiles[f].CurrentCluster;
StartList.dirIdx = 0;
CurrentList.dirSector = gFiles[f].dirSector;
CurrentList.CurrentCluster = gFiles[f].CurrentCluster;
CurrentList.dirIdx = 0;
return f;
}
// Function: Lists a part (aka page) of the files in the directory
// specified by InitList()
// Returns : The number of files/dirs that were listed
int8 ListFiles(char f)
{
DIR *pDir;
char filename[(CHARACTERS_IN_LONG_FILENAMES+1)]; // should be enough with 13+1
char i,u,fni,len;
BOOLEAN isLongFileName = FALSE;
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
return 0;
if(changeList)
{
FreeList();
}
if((gFiles[f].CurrentCluster != CurrentList.CurrentCluster) || (gFiles[f].dirSector != CurrentList.dirSector))
{
gFiles[f].dirSector = CurrentList.dirSector;
gFiles[f].CurrentCluster = CurrentList.CurrentCluster;
ReadSector(gFiles[f].dirSector,gFiles[f].IOpuffer);
}
gFiles[f].dirIdx = CurrentList.dirIdx;
u=0;
do
{
pDir = (DIR*)(&(gFiles[f].IOpuffer[32*(int16)gFiles[f].dirIdx]));
for (i=gFiles[f].dirIdx;i<DIRENTRYS_PER_SECTOR;i++) // loop throu all direntrys in the sector
{
if ((pDir->sName[0] != 0xE5 && pDir->sName[0] != 0)) // if file/dir isn't deleted and isn't the end of the directory
{
if(pDir->bAttr != 0x0F) // Normal filename (8.3)
{
if(isLongFilename) // If this is the short version of the long filename, just save the number
{
if(changeList)
{
FileList[u].shortName = malloc(13); // 8.3 = 8chars + '.' + 3chars + 0x00
FileList[u].isLong = TRUE;
ConvertFilename(pDir,filename);
strcpy(FileList[u].shortName,filename); // copy the 8.3 name of the file
}
u++;
isLongFilename = FALSE;
if(u == MAX_FILE_LIST)
{
gFiles[f].dirIdx = i+1;
return u;
}
}
else // normal 8.3 filename
{
if(changeList)
{
ConvertFilename(pDir,filename);
FileList[u].name = malloc(strlen(filename)+1); // +1 for char 0x00
strcpy(FileList[u].name,filename);
FileList[u].shortName = FileList[u].name; // point to same string
FileList[u].isLong = FALSE;
if(pDir->bAttr & 0x10) // is directory
FileList[u].isDir = TRUE;
else
FileList[u].isDir = FALSE;
}
u++;
if(u == MAX_FILE_LIST)
{
gFiles[f].dirIdx = i+1;
return u;
}
}
}
else if((pDir->bAttr & 0x0F) == 0x0F) // If it is a long filename entry
{
fni = (pDir->sName[0] & 0x3F); // Filename Index
if((pDir->sName[0] & 0x40)) // First LongFilename entry, the last characters of a long filename
{
if(changeList)
{
ConvertLongFilename(pDir,filename);
len = strlen(filename)+CHARACTERS_IN_LONG_FILENAMES*(fni-1); // Length of the long filename
FileList[u].name = malloc(len+1);// number of chars in this strinng + 13 in each other long filname entry
FileList[u].name[len] = 0x00; // set last char to 0
strfill(FileList[u].name,filename,(fni-1)*CHARACTERS_IN_LONG_FILENAMES); //Fills the name from position (fni-1)*13
if(pDir->bAttr & 0x10) // is directory
FileList[u].isDir = TRUE;
else
FileList[u].isDir = FALSE;
}
isLongFilename = TRUE;
}
else if((pDir->sName[0] & 0x80) == 0) // If it is a long filname, but not deleted
{
if(isLongfilename && changeList)
{
ConvertLongFilename(pDir,filename);
strfill(FileList[u].name,filename,(fni-1)*CHARACTERS_IN_LONG_FILENAMES); //Fills the name from position (fni-1)*13
}
else
printf(lcd_putc,"NoLongFileName!");
}
}
}
if (pDir->sName[0] == 0)
{
gFiles[f].dirIdx = END_OF_DIR;
return u;
}
pDir++;
}
nextcluster = GetNextCluster(gFiles[f].CurrentCluster);
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].dirSector = actsector;
gFiles[f].CurrentCluster = nextcluster;
gFiles[f].dirIdx = 0;
}
} while (nextcluster != 0x0FFFFFFF && nextcluster != 0);
gFiles[f].dirIdx = END_OF_DIR;
return u;
}
// Function: Go to next page in the file/dir list
// Returns : MMCResponse
MMCResponse NextPage(char f)
{
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
CurrentList.dirSector = gFiles[f].dirSector;
CurrentList.CurrentCluster = gFiles[f].CurrentCluster;
if(gFiles[f].dirIdx == DIRENTRYS_PER_SECTOR)
{
nextcluster = GetNextCluster(gFiles[f].CurrentCluster);
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
CurrentList.dirSector = actsector;
CurrentList.CurrentCluster = nextcluster;
CurrentList.dirIdx = 0;
return MMC_OK;
}
return MMC_INVALID_CLUSTER;
}
else if(gFiles[f].dirIdx == END_OF_DIR)
{
return MMC_END_OF_DIR; // Last file/dir have already been listed by ListFiles
}
else
{
CurrentList.dirIdx = gFiles[f].dirIdx;
}
return MMC_OK;
}
// Note: 0 = first page
MMCResponse SetPage(char f, int32 page)
{
int32 i;
MMCResponse res;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
CurrentList.dirSector = StartList.dirSector;
CurrentList.CurrentCluster = StartList.CurrentCluster;
CurrentList.dirIdx = StartList.dirIdx; // should always be 0
changeList = FALSE; // this tells the ListFiles function to not change the list, just loop through files
for(i=0;i<page;i++)
{
ListFiles(f);
res = NextPage(f);
if(res != MMC_OK)
{
changeList = TRUE;
return res;
}
}
changeList = TRUE;
return MMC_OK;
}
MMCResponse CloseList(char f)
{
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
gFiles[f].Free = TRUE;
return MMC_OK;
}
void FreeList()
{
int i;
for(i=0;i<MAX_FILE_LIST;i++)
{
if(FileList[i].isLong) // If it is a long filename, name and short name are different string
free(FileList[i].shortName); // then free both
else
FileList[i].shortName = NULL;
free(FileList[i].name); // else free ONLY name(they point to same string..)
}
}
#endif// ENABLE_FILELISTNG
// Function: Creates a file
MMCResponse fcreate(char f,char *fname)
{
DIR *pDir;
int32 actsector,actcl;
int16 i;
if (f > (MAXFILES-1))
{
return MMC_INVALID_FILE;
}
if (gFAT32Vars.gFirstDirEntryCluster == 0x0FFFFFFF)
{
// extend the directory file !!!
gFAT32Vars.gFirstDirEntryCluster = FindFirstFreeCluster();
gFAT32Vars.gFirstEmptyDirEntry = 0;
SetClusterEntry(gFiles[f].CurrentCluster,gFAT32Vars.gFirstDirEntryCluster);
SetClusterEntry(gFAT32Vars.gFirstDirEntryCluster,0x0FFFFFFF);
actsector = gFAT32Vars.gFirstDirEntryCluster + gFAT32Vars.gFirstDataSector;
for (i=0;i<512;i++)
gFiles[f].IOpuffer[i] = 0;
WriteSector(actsector,gFiles[f].IOpuffer);
}
actsector = gFAT32Vars.gFirstDirEntryCluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
pDir = (DIR*)(&(gFiles[f].IOpuffer[32*(int16)gFAT32Vars.gFirstEmptyDirEntry]));
gFiles[f].dirSector = actsector;
gFiles[f].dirIdx = gFAT32Vars.gFirstEmptyDirEntry;
GetDOSName(pDir,fname);
pDir->bAttr = 0;
actcl = FindFirstFreeCluster();
pDir->hCluster = actcl & 0xFFFF;
pDir->hClusterH = actcl >> 16;
SetClusterEntry(actcl,0x0FFFFFFF);
pDir->wSize = 0;
gFiles[f].position = 0;
pDir->hDate = GetCurrentDOSDate();
pDir->hTime = GetCurrentDOSTime();
WriteSector(actsector,gFiles[f].IOpuffer);
memcpy(&(gFiles[f].DirEntry),pDir,32);
return MMC_OK;
}
int32 ComposeCluster(char f)
{
int32 retval;
retval = gFiles[f].DirEntry.hClusterH;
retval <<= 16;
retval |= gFiles[f].DirEntry.hCluster;
return retval;
}
// Function: Opens a file with the specified mode
// Returns : A file handle or error code
MMCResponse fopen(char *fname, char mode)
{
char found;
char f;
int32 actsector,actcluster,nextcluster;
char *filename;
if (!CardInserted())
return MMC_NO_CARD_INSERTED;
filename = TryFile(fname,&f);
if (filename == 0)
{
return MMC_NOT_FOUND; // probebly invalid directory
}
found = FALSE;
found = FindDirEntry(filename,f);
if (!found)
{
if (mode == 'r')
{
gFiles[f].Free = TRUE;
return MMC_NOT_FOUND;
}
else
{
if (fcreate(f,filename) != MMC_OK)
return MMC_NOT_FOUND;
found = TRUE;
}
}
if (found)
{
gFiles[f].Free = FALSE;
gFiles[f].mode = mode;
if (mode == 'a')
{
gFiles[f].position = gFiles[f].DirEntry.wSize;
actcluster = ComposeCluster(f);
while (actcluster != 0x0FFFFFFF && nextcluster != 0)
{
nextcluster = GetNextCluster(actcluster);
if (nextcluster == 0x0FFFFFFF || nextcluster == 0)
break;
actcluster = nextcluster;
}
actsector = actcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].CurrentCluster = actcluster;
gFiles[f].posinsector = gFiles[f].position & 0x01FF;
if (gFiles[f].posinsector == 0 && gFiles[f].position != 0)
gFiles[f].posinsector = 512;
}
else
{
gFiles[f].position = 0;
actsector = ComposeCluster(f);
actsector += gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].CurrentCluster = ComposeCluster(f);
gFiles[f].posinsector = 0;
}
}
return f;
}
// Function: closes a open file and makes it avavible for a new file
MMCResponse fclose(char f)
{
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
if ((gFiles[f].mode == 'a') || (gFiles[f].mode == 'w'))
fflush(f);
gFiles[f].Free = TRUE;
return MMC_OK;
}
// Function: writes the chach to the MMC
MMCResponse fflush(char f)
{
int32 actsector;
DIR *pDir;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
actsector = gFiles[f].CurrentCluster + gFAT32Vars.gFirstDataSector;
WriteSector(actsector,gFiles[f].IOpuffer);
ReadSector(gFiles[f].dirSector,gFiles[f].IOpuffer);
pDir = (DIR*)(&(gFiles[f].IOpuffer[32*gFiles[f].dirIdx]));
if (gFiles[f].DirEntry.bAttr & 0x10) // if it is a directory
pDir->wSize = 0;
else
pDir->wSize = gFiles[f].position;
pDir->hDate = GetCurrentDOSDate();
pDir->hTime = GetCurrentDOSTime();
WriteSector(gFiles[f].dirSector,gFiles[f].IOpuffer);
ReadSector(actsector,gFiles[f].IOpuffer);
return MMC_OK;
}
// Function: Enter a specified directory
char cwd(char *fname, char f)
{
int32 actsector;
if (f > (MAXFILES-1))
{
return FALSE; // just in case of overaddressing
}
if (IsSelfDir(fname))
{
return TRUE; // already in Root dir
}
if (!FindDirEntry(fname,f))
{
return FALSE; // not found
}
actsector = ComposeCluster(f);
actsector += gFAT32Vars.gFirstDataSector; // read current dir
ReadSector(actsector,gFiles[f].IOpuffer);
gFAT32Vars.gDirEntrySector = actsector;
gFiles[f].dirSector = actsector;
gFiles[f].CurrentCluster = ComposeCluster(f);
return TRUE;
}
// Function: Put a char to the open file
MMCResponse fputch(char be, char f)
{
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
if (gFiles[f].posinsector == 512)
{
actsector = gFiles[f].CurrentCluster + gFAT32Vars.gFirstDataSector;
WriteSector(actsector,gFiles[f].IOpuffer);
nextcluster = FindFirstFreeCluster();
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
SetClusterEntry(gFiles[f].CurrentCluster,nextcluster);
SetClusterEntry(nextcluster,0x0FFFFFFF);
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].CurrentCluster = nextcluster;
gFiles[f].posinsector = 0;
}
}
gFiles[f].IOpuffer[gFiles[f].posinsector] = be;
gFiles[f].posinsector++;
gFiles[f].position++;
return MMC_OK;
}
// Function: Puts a string to the open file
MMCResponse fputstring(char *be, char f)
{
int16 leng,i;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
leng = strlen(be);
for (i=0;i<leng;i++)
fputch(be[i],f);
return MMC_OK;
}
// Function: Read a buffer from the open file
int16 fread(char *buffer, int16 leng, char f)
{
int16 i,retv;
char c,v;
if (f > (MAXFILES-1))
return 0;
retv = 0;
for (i=0;i<leng;i++)
{
v = fgetch(&c,f);
if (v == MMC_OK)
{
buffer[i] = c;
retv++;
}
else
break;
}
return retv;
}
// Function: Write a buffer to the open file
MMCResponse fwrite(char *buffer, int16 leng, char f)
{
int16 i;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
for (i=0;i<leng;i++)
fputch(buffer[i],f);
return MMC_OK;
}
// Function: Read a char from the open file
MMCResponse fgetch(char *ki,char f)
{
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
if (gFiles[f].position >= gFiles[f].DirEntry.wSize)
return MMC_INVALID_POSITION;
*ki = gFiles[f].IOpuffer[gFiles[f].posinsector];
gFiles[f].posinsector++;
gFiles[f].position++;
if (gFiles[f].posinsector == 512)
{
nextcluster = GetNextCluster(gFiles[f].CurrentCluster);
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].CurrentCluster = nextcluster;
gFiles[f].posinsector = 0;
}
}
return MMC_OK;
}
// Function: Removes a file
MMCResponse remove(char *fname)
{
char i,found;
char f;
DIR *pDir;
int32 nextcluster,currentcluster;
char *filename;
filename = TryFile(fname,&f);
if (filename == 0)
return MMC_NOT_FOUND;
found = FindDirEntry(filename,f);
if (!found)
{
gFiles[f].Free = TRUE;
return MMC_NOT_FOUND;
}
pDir = (DIR*)(&(gFiles[f].IOpuffer[32*(int16)gFAT32Vars.gDirEntryIdx]));
pDir->sName[0] = 0xE5;
for (i=1;i<8;i++)
pDir->sName[i] = ' ';
for (i=0;i<3;i++)
pDir->spam[i] = ' ';
WriteSector(gFAT32Vars.gDirEntrySector,gFiles[f].IOpuffer);
currentcluster = ComposeCluster(f);
while (currentcluster != 0x0FFFFFFF && nextcluster != 0)
{
nextcluster = GetNextCluster(currentcluster);
ClearClusterEntry(currentcluster);
currentcluster = nextcluster;
}
ClearClusterEntry(currentcluster);
SetClusterEntry(currentcluster,0);
currentcluster = gFAT32Vars.gStartSector+DiskInfo.Reserved1 + gFAT32Vars.FATstartidx;
WriteSector(currentcluster,FATTable);
currentcluster += DiskInfo.hSectorsPerFat;
WriteSector(currentcluster,FATTable);
gFiles[f].Free = TRUE;
return MMC_OK;
}
// Function: Gets the size of a file
MMCResponse getfsize(char *fname, int32 *fsiz)
{
char found;
char f;
DIR *pDir;
char *filename;
filename = TryFile(fname,&f);
if (filename == 0)
return MMC_NOT_FOUND;
found = FindDirEntry(filename,f);
if (!found)
{
gFiles[f].Free = TRUE;
return MMC_NOT_FOUND;
}
pDir = (DIR*)(&(gFiles[f].IOpuffer[32*(Int16)gFAT32Vars.gDirEntryIdx]));
gFiles[f].Free = TRUE;
*fsiz = pDir->wSize;
return MMC_OK;
}
|
MMC_SPI_FAT32.h
| Code: |
#define MAXFILES 1 // This define specifies the maximum number
// of simultaneously open files, more files
// requires more ram. The maximun number of
// this define is 8, this is because of my
// error handlig.. but that should be more
// then enough..
// This enable functions and variables needed for filelisting
// If you aren't going to use it, comment this line out to
// save some RAM
#define ENABLE_FILELISTNG
typedef struct _diskinforec
{
char hJumpCode[3];
char OEMName[8];
int16 hBytesPerSector;
char bSectorsPerCluster;
int16 Reserved1;
char FATCopies;
int16 hMaxRootEntries;
int16 hSectors;
char Descriptor;
int16 holdSectorsPerFat;
int16 hSectorsPerTrack;
int16 hNumberofHeads;
int32 hNumberofHidden;
int32 hNumberofSectors;
int32 hSectorsPerFat;
int16 hFlags;
int16 hFAT32Version;
int32 hRootStartCluster;
} diskinforec;
typedef struct _direntry
{
char sName[8];
char spam[3];
char bAttr;
char bReserved[8];
int16 hClusterH;
int16 hTime;
int16 hDate;
int16 hCluster;
int32 wSize;
} DIR;
typedef struct
{
char IOpuffer[512];
DIR DirEntry;
int32 CurrentCluster;
int16 posinsector;
int32 position;
int32 dirSector;
int8 dirIdx;
char mode;
BOOLEAN Free;
} FILE;
typedef struct
{
int32 MMCAddress;
int32 FATstartidx;
int32 gStartSector;
int32 gFirstDataSector;
int8 gDirEntryIdx;
int32 gDirEntrySector;
int8 gFirstEmptyDirEntry;
int32 gFirstDirEntryCluster;
} FAT32Vars;
typedef struct
{
unsigned long Year;
char Month;
char Day;
char Hour;
char Minute;
char Second;
} TimeRecord;
typedef struct
{
int32 dirSector;
int32 CurrentCluster;
int dirIdx;
} ListPos;
typedef struct
{
char *name;
char *shortName;
BOOLEAN isDir;
BOOLEAN isLong;
} LongFileName;
typedef char MMCResponse;
MMCResponse MMCInit();
MMCResponse ReadSector(int32 sector, char *hova);
MMCResponse WriteSector(int32 sector, char *honnan);
void InitFAT();
char FindDirEntry(char *fname, char f);
#ifdef ENABLE_FILELISTNG
MMCResponse InitList(char *path);
int8 ListFiles(char f);
MMCResponse NextPage(char f);
MMCResponse SetPage(char f, int32 page);
MMCResponse CloseList(char f);
void FreeList();
#endif
MMCResponse fopen(char *fname, char mode);
MMCResponse fclose(char f);
MMCResponse fflush(char f);
char cwd(char *fname, char f);
MMCResponse fputch(char be, char f);
MMCResponse fgetch(char *ki, char f);
MMCResponse fputstring(char *be, char f); // fputs is reserved in CCS C
int16 fread(char *buffer, int16 leng, char f);
MMCResponse fwrite(char *buffer, int16 leng, char f);
MMCResponse remove(char *fname);
MMCResponse getfsize(char *fname, int32 *fsiz);
|
Please help friends.
I know how to print the data exactly?  |
|
 |
andreluizeng
Joined: 04 Apr 2006
Posts: 117
Location: Brasil
|
|
| Posted: Thu Apr 28, 2011 7:29 am |
|
|
Please, put your string in a for loop and write char by char using fputch, and see if the problem still persists.
regards,
Andre
_________________
Andre |
|
|
thenorthstar
Joined: 06 Mar 2010
Posts: 24
|
|
| Posted: Thu Apr 28, 2011 11:58 pm |
|
|
Thank you for your response.
I got into the loop, but I'm having the same problem.
I looked at the following code from the library MMC_SPI_FAT32.c
My Main Code:
| Code: |
#include <18F4620.h>
#include <string.h>
#include <MMC_SPI_FAT32.h>
#fuses HS,NOWDT,NOPROTECT,BROWNOUT,NOLVP,NOCPD
#use delay(clock=10000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8)
#include "2x16_4x20_LCD.c"
#include "MMC_SPI_FAT32.c"
void main(){
delay_ms(100);
char f,gfilename[12],c;
char msg[100];
int cart;
int i=0;
cart=0;
lcd_init();
LCD_gotoxy(1,1);
printf(lcd_putc," MMC CONTROL ");
printf("\r\nMMC CONTROL\r\n");
while(true)
{ LCD_gotoxy(1,1);
printf(lcd_putc," MMC CONTROL ");
if(MMCInit() == MMC_OK) {
LCD_gotoxy(1,1);
printf(lcd_putc,"MMC init OK ");
printf("MMC init OK\r\n");
delay_ms(2000);
InitFAT();
LCD_gotoxy(1,2);
printf(lcd_putc,"FAT init OK");
printf("FAT init OK\r\n");
printf("Creating Files\r\n");
delay_ms(1000);
printf(lcd_putc,"\f");
strcpy(gfilename,"Sample.txt");
f = fopen(gfilename,'a');
printf("Created sample.txt\r\n");
delay_ms(1000);
if (f & MMC_ERROR)
{
printf(lcd_putc,"Couldn't open file!");
if(f == MMC_NO_CARD_INSERTED)
printf(lcd_putc,"Please, insert MMC!");
else if(f == MMC_MAX_FILES_REACHED)
printf(lcd_putc,"ops.. =)");
}
else
{
printf(lcd_putc,"\f");
LCD_gotoxy(1,1);
printf(lcd_putc,"Writing Began");
printf("Writing Began\r\n");
strcpy(msg,"Hello World");
fputstring(msg,f);
printf("Written data=");
printf(msg);
fclose(f);
delay_ms(100);
while (MMCInit() == MMC_OK)
{
int w;
w==1;
LCD_gotoxy(1,1);
printf(lcd_putc,"Writing Done");
printf("\r\nWriting Done");
while (MMCInit() == MMC_OK)
{
}
}
}
}//MMCInit
} //while
} //Main
//+++++++++++++++++++++++++++++++++++++++++++++++++++
|
I add the following code and in the data received from the serial port.
//=============================================
| Code: |
MMCResponse fputch(char be, char f)
{
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
if (gFiles[f].posinsector == 512)
{
actsector = gFiles[f].CurrentCluster + gFAT32Vars.gFirstDataSector;
WriteSector(actsector,gFiles[f].IOpuffer);
nextcluster = FindFirstFreeCluster();
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
SetClusterEntry(gFiles[f].CurrentCluster,nextcluster);
SetClusterEntry(nextcluster,0x0FFFFFFF);
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].CurrentCluster = nextcluster;
gFiles[f].posinsector = 0;
}
}
gFiles[f].IOpuffer[gFiles[f].posinsector] = be;
gFiles[f].posinsector++;
gFiles[f].position++;
printf("position=%lu\r\n",position); // Sent Serial Port
return MMC_OK;
} |
| Code: | gFiles[f].position++;
printf("position=%lu\r\n",position); // Sent Serial Port |
//=============================================
And
//=============================================
| Code: |
MMCResponse fputch(char be, char f)
{
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
if (gFiles[f].posinsector == 512)
{
actsector = gFiles[f].CurrentCluster + gFAT32Vars.gFirstDataSector;
WriteSector(actsector,gFiles[f].IOpuffer);
nextcluster = FindFirstFreeCluster();
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
SetClusterEntry(gFiles[f].CurrentCluster,nextcluster);
SetClusterEntry(nextcluster,0x0FFFFFFF);
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].CurrentCluster = nextcluster;
gFiles[f].posinsector = 0;
}
}
gFiles[f].IOpuffer[gFiles[f].posinsector] = be;
gFiles[f].posinsector++;
printf("posinsector=%lu\r\n",gFiles[f].posinsector); // Sent Serial Port
gFiles[f].position++;
return MMC_OK;
} |
| Code: | gFiles[f].posinsector++;
printf("posinsector=%lu\r\n",gFiles[f].posinsector); // Sent Serial Port |
//=============================================
And
//=============================================
| Code: |
MMCResponse fputch(char be, char f)
{
int32 nextcluster,actsector;
if (f > (MAXFILES-1))
return MMC_INVALID_FILE;
if (gFiles[f].posinsector == 512)
{
actsector = gFiles[f].CurrentCluster + gFAT32Vars.gFirstDataSector;
WriteSector(actsector,gFiles[f].IOpuffer);
nextcluster = FindFirstFreeCluster();
if (nextcluster != 0x0FFFFFFF && nextcluster != 0)
{
SetClusterEntry(gFiles[f].CurrentCluster,nextcluster);
SetClusterEntry(nextcluster,0x0FFFFFFF);
actsector = nextcluster + gFAT32Vars.gFirstDataSector;
ReadSector(actsector,gFiles[f].IOpuffer);
gFiles[f].CurrentCluster = nextcluster;
gFiles[f].posinsector = 0;
}
}
gFiles[f].IOpuffer[gFiles[f].posinsector] = be;
printf("posinsector=%c\r\n",gFiles[f].IOpuffer[gFiles[f].posinsector]);
gFiles[f].posinsector++;
gFiles[f].position++;
return MMC_OK;
}
|
| Code: | gFiles[f].IOpuffer[gFiles[f].posinsector] = be;
printf("posinsector=%c\r\n",gFiles[f].IOpuffer[gFiles[f].posinsector]); |
//=============================================
The data comes from the right, but the same problem continues
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andreluizeng
Joined: 04 Apr 2006
Posts: 117
Location: Brasil
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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Posted: Fri Apr 29, 2011 9:51 am |
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I am using 256 mb SD card and formatted in Windows 7 as 512 bytes.
I do not understand why is this happening.
Can you give me a working mmc code? please |
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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Posted: Sun May 01, 2011 8:26 am |
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| Please help me |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Mon May 02, 2011 6:00 am |
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The cause of your problem might have to do with the fact that your language is using 'special' characters. The early computer standards were developed by people who never considered other languages than English would be used...
Most likely the editor program you are using for writing your programs is set to UTF-16 encoding, this means that when you see _one_ character on the screen it will take _two_ bytes to store this character. Of these two bytes only one will be stored on the memory card, so what is written to the card is corrupted data.
Which Editor program are you using?
What happens when you change the Encoding setting to ANSI?
If this fails, then post the actual HEX data written on the card. Use a program like Winhex to read the data in hexadecimal format. |
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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Posted: Mon May 02, 2011 7:13 am |
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I'm using CCS PCWHD compiler v4.114, I could not find the settings to ANSI Encoding.
Do not use special characters for Trial. "Hello World" I have written only But not again will be mad
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Ttelmah
Joined: 11 Mar 2010
Posts: 19538
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| Posted: Mon May 02, 2011 10:02 am |
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He is not talking about the compiler, but your program being used to display the data from the disk file.
However I don't think this is the problem, if it was using 16bit encoding, you would see one output character for every two characters in the file. You are seeing the opposite.
Have you tried with the SPI hardware, rather than software?. It almost looks to me as if the program is generating 16 clocks for each character, rather than 8.
Best Wishes |
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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Posted: Mon May 02, 2011 11:57 pm |
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I tried again without making any changes in the program and the result is as follows.
my sending message:
| Code: | printf(lcd_putc,"\f");
LCD_gotoxy(1,1);
printf(lcd_putc,"Writing Began");
printf("Writing Began\r\n");
strcpy(msg,"Hello World");
fputstring(msg,f);
printf("Written data=%s",msg);
fclose(f);
delay_ms(100); |
But the SD card in the data of different
| Code: | | printf("Written data=%s",msg); |
msg in the data correctly but the wrong data in the file
| Code: | printf(lcd_putc,"\f");
LCD_gotoxy(1,1);
printf(lcd_putc,"Writing Began");
printf("Writing Began\r\n");
strcpy(msg,"Hello World");
fputstring(msg,f);
printf("Written data=%s",msg);
fclose(f);
delay_ms(100); |
And received data from serial port:
And I opened SAMPLE.txt and SD card with WinHex.:
should write a hello world but write hello only and leave a space between characters.
friends please help me
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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Posted: Thu May 05, 2011 12:32 am |
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| With an idea yet? |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19538
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| Posted: Thu May 05, 2011 4:25 am |
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Same comment as before:
Have you tried using hardware SPI, rather than software?.
Best Wishes |
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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Posted: Thu May 05, 2011 8:32 am |
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| Have not tried yet |
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thenorthstar
Joined: 06 Mar 2010
Posts: 24
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| Posted: Thu May 05, 2011 11:28 pm |
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I tried it but the result is the same with hardware SPI.
should write a hello world but it's write hello only
| Code: | strcpy(msg,"Hello World");
fputstring(msg,f); |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19538
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| Posted: Fri May 06, 2011 3:56 am |
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That is actually even stranger. You appear to no longer have the extra characters, and it has been converted to upper case!.....
Best Wishes |
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