write sector on 128 mb card didn't work but on 32m it work

[Guest]

i use your function for write a sector to a mmc card.
on 32mb card it work but in the 128mb card it didn't.
it never free from busy flag.
could you please guide me?

unsigned char MMCWriteSector(unsigned long lba, char *s)
{
unsigned int i;
MMCCommand(24, (lba<<9));
if (MMCGet() == 0xff)
return 1;

for(i = 0 ; i < 100 ; i++)
SpiByte(0xff);

SpiByte(0xfe); // Send Start Byte

SpiByte(0xff);
SpiByte(0xff);
SpiByte(0xff); /* Read "data response byte" */

i = 0xffff;
while ((SpiByte(0xff) == 0x00) && (--i)); /* wait for write finish */
if (i == 0)
return 2; // Error
MMC_CS = 1;
return 0;
}

[TSchultz]

Unless the 128MB card has multiple <=32MB partitions it will have a FAT32 format, the 32MB card will have a FAT16 format.

[ckielstra]

One error is that your time-out is shorter than expected.

change

[lucky]

Have a look at Douglas Kennedy code in the CCS Code Libray:

http://www.ccsinfo.com/forum/viewtopic.php?t=21721
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Lucky
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