void if_spiInit(hwInterface *iface)
{
euint8 i;
__disable_interrupt();
UCB0CTL1 |= UCSWRST;
UCB0CTL0 = UCMSB + UCMST + UCSYNC; //+ UCCKPL+ UCCKPH;
// UCB0CTL0 = UCMSB + UCMST + UCSYNC + UCCKPL+ UCCKPH;
UCB0CTL1 |= 0xC0;
UCB0BR0 = 2;
UCB0BR1 = 0;
P3SEL |= 0x0E; //Primary peripheral
P3OUT |= (1<<DD_CS);
P3DIR |= (1<<DD_MOSI) | (1<<DD_SCK) | (1<<DD_CS);
UCB0CTL1 &= ~UCSWRST;
__enable_interrupt();
/* Send 10 spi commands with card not selected */
for(i=0;i<10;i++)
if_spiSend(iface,0xff);
/* Select card */
/* PORTB &= 0xFE; moved to interfaceInit to make clear
that card has to be selected before calling sd_init() */
P3OUT &= ~(1<<DD_CS);
}
esint8 sd_Init(hwInterface *iface)
{
euint32 retry;
euint8 n, resp, ty, ocr[4], cmd;
ty = 0;
/* Try to send command enter idle (CMD0) up to 100 times */
retry=100;
do {
resp = sd_Command(iface, CMD0, 0, 0);
} while( resp!=1 && retry-- );
if( resp != 1 ) {
if( resp == 0xff ){
return(-1);
}
else {
sd_Resp8bError( iface, resp );
return(-2);
}
}
DBG((TXT("Card identified as ")));
if ( sd_Command( iface, CMD8, 0, 0x01AA) == 1 ) {
/* SDHC */
for ( n=0; n<4; n++ ) {
ocr[n] = if_spiSend( iface, 0xff );
}
if ( ocr[2] == 0x01 && ocr[3] == 0xAA ) { /* The card can work at vdd range of 2.7-3.6V */
retry = LOOP_CNT_1000; /* should retry 1000ms */
do {
/* Wait for leaving idle state (ACMD41 with HCS bit) */
resp = sd_Command( iface, ACMD41, ((1UL << 30)>>16), 0 );
retry--;
} while ( retry && (resp != 0) );
if ( retry && sd_Command( iface, CMD58, 0, 0 ) == 0) { /* Check CCS bit in the OCR */
for ( n = 0; n < 4; n++ ) {
ocr[n] = if_spiSend( iface, 0xff );
}
ty = (ocr[0] & 0x40) ? 12 : 4;
if ( ty == 12 ) DBG((TXT("SDHC HighCap\n")));
if ( ty == 4 ) DBG((TXT("SDHC\n")));
}
}
}
void
if_spiInit(hwInterface *iface)
{
unsigned int i;
GPIOA->BSRR = GPIO_BSRR_BS4;
for(i=0;i<20;i++) {
if_spiSend(iface, 0xff);
}
GPIOA->BSRR = GPIO_BSRR_BR4;
}
void
if_spiInit(hwInterface *iface)
{
unsigned int i;
*AT91C_PIOA_SODR = AT91C_PA11_NPCS0;
*AT91C_PIOA_PER = AT91C_PA11_NPCS0;
for(i=0;i<20;i++) {
if_spiSend(iface, 0xff);
}
*AT91C_PIOA_PDR = AT91C_PA11_NPCS0;
}
void if_spiInit(hwInterface *iface)
{
euint8 i;
/* Unselect card */
PORTB |= 0x01;
/* Set as master, clock and chip select output */
DDR_SPI = (1<<DD_MOSI) | (1<<DD_SCK) | 1;
/* Enable SPI, master, set clock rate to fck/2 */
SPCR = (1<<SPE) | (1<<MSTR); /* fsck / 4 */
SPSR = 1; /* fsck / 2 */
/* Send 10 spi commands with card not selected */
for(i=0;i<10;i++)
if_spiSend(iface,0xff);
/* Select card */
PORTB &= 0xFE;
}
void if_spiUnselectDevice(hwInterface* file)
{
if_spiSend(file,0xff); /* release DO */
P3OUT |= (1<<DD_CS);
}