int main( void )
{
WDTCTL = WDTPW + WDTHOLD;
//Initialisation of the MMC/SD-card
while (status != 0) // if return in not NULL an error did occur and the
// MMC/SD-card will be initialized again
{
status = mmcInit();
timeout++;
if (timeout == 150) // Try 50 times till error
{
//printf ("No MMC/SD-card found!! %x\n", status);
break;
}
}
while ((mmcPing() != MMC_SUCCESS)); // Wait till card is inserted
// Read the Card Size from the CSD Register
cardSize = mmcReadCardSize();
// Clear Sectors on MMC
for (i = 0; i < 50; i++) buffer[i] = 1;
mmcWriteSector(0, buffer); // write a 50 Byte big block beginning at the (aligned) adress
for (i = 0; i < 50; i++) buffer[i] = 0;
mmcWriteSector(1, buffer); // write a 50 Byte big block beginning at the (aligned) adress
mmcReadSector(0, buffer); // read a size Byte big block beginning at the address.
for (i = 0; i < 50; i++) if(buffer[i] != 0) P1OUT |= 0x01;
mmcReadSector(1, buffer); // read a size Byte big block beginning at the address.
for (i = 0; i < 50; i++) if(buffer[i] != 0) P1OUT |= 0x02;
// Write Data to MMC
for (i = 0; i < 50; i++) buffer[i] = i;
mmcWriteSector(0, buffer); // write a 50 Byte big block beginning at the (aligned) adress
for (i = 0; i < 50; i++) buffer[i] = i+64;
mmcWriteSector(1, buffer); // write a 50 Byte big block beginning at the (aligned) adress
mmcReadSector(0, buffer); // read a size Byte big block beginning at the address.
for (i = 0; i < 50; i++) if(buffer[i] != (unsigned char)i) P1OUT |= 0x04;
mmcReadSector(1, buffer); // read a size Byte big block beginning at the address.
for (i = 0; i < 50; i++) if(buffer[i] != (unsigned char)(i+64)) P1OUT |= 0x08;
for (i = 0; i < 50; i++)
mmcReadSector(i, buffer); // read a size Byte big block beginning at the address.
mmcGoIdle(); // set MMC in Idle mode
while (1);
}
// Initialize MMC card
char mmcInit(void){
//raise CS and MOSI for 80 clock cycles
//SendByte(0xff) 10 times with CS high
//RAISE CS
int i;
mmcID = registerComm(&mmcConf);
resetUCB0(mmcID);
MMC_CS_CONFIG();
//initialization sequence on PowerUp
MMC_CS_HIGH();
for(i=0;i<=10;i++)
spiSendByte(DUMMY_CHAR);
return (mmcGoIdle());
}
