[PIC] sd card, size of file

[yann75]

hi guys :-o

sbit Mmc_Chip_Select at LATA5_bit;
sbit Mmc_Chip_Select_Direction at TRISA5_bit;

void cr_dosier ()
{
unsigned int size;
unsigned short caract, i;

Mmc_Fat_Set_File_Date(2014, 08, 06, 15, 20, 30);
Mmc_Fat_Assign("test.TXT", 0x80); // Find existing file or create a new one 
Mmc_Fat_append();
Mmc_Fat_Write(" this is just a test ", 21); 
Mmc_Fat_Write("\r\n",2);

Mmc_Fat_reset(&size);
for (i=0; i < size; i++)
{
Mmc_Fat_read(&caract);
UART1_Write(caract);
}
UART1_Write(13);
}
void main()
{ 
while(1)
{
cr_dosier();
}
}

my project is recording data in sd card, i have create a file for testing, but after simulation the probleme that i can't store more than 10 lines. any one have an idea on how to increase the size of the file :smile: or i have to use the sectors !!!!
this is just a test
this is just a test
this is just a test
.
.
.
.
.
this is just a test // 10 times

 

[udayan92]

I think it might be happening because of the value allocated to the variable 'size'.What is the value assigned to 'size' in this program..?

 

[FvM]

Your post misses impotant informations:
- processor (apparently PIC16 or PC18)
- compiler
- SD card library

 

[yann75]

I think it might be happening because of the value allocated to the variable 'size'.What is the value assigned to 'size' in this program..?

hi udayan92; thanks for replay
size is variable int .

unsigned int size.

according to the help of mikroc : it said
size: buffer to store file size to. After file has been open for reading, its size is returned through this parameter.
i didn't give a value to size. juste declare it.

 

[yann75]

hi FvM; thanks for replay ;
PIC 18F4520
compiler MIKROC PRO
FAT16 MMC library