esint8 if_initInterface(hwInterface* file, eint8* opts)
{
euint32 sc;
if_spiInit(file); /* init at low speed */
if(sd_Init(file)<0) {
DBG((TXT("Card failed to init, breaking up...\n")));
return(-1);
}
if(sd_State(file)<0){
DBG((TXT("Card didn't return the ready state, breaking up...\n")));
return(-2);
}
// file->sectorCount=4; /* FIXME ASAP!! */
sd_getDriveSize(file, &sc);
file->sectorCount = sc/512;
if( (sc%512) != 0) {
file->sectorCount--;
}
DBG((TXT("Drive Size is %lu Bytes (%lu Sectors)\n"), sc, file->sectorCount));
/* increase speed after init */
#if ( HW_ENDPOINT_LPC2000_SPINUM == 1 )
SSPCR0 = ((8-1)<<0) | (0<<CPOL);
#endif
if_spiSetSpeed(SPI_PRESCALE_MIN);
// if_spiSetSpeed(100); /* debug - slower */
DBG((TXT("Init done...\n")));
return(0);
}
int8_t init_interface()
{
uint32_t sc;
if_spiInit(file); /* init at low speed */
if(sd_Init(file)<0) {
printf("Card failed to init, breaking up...\n\r");
return(-1);
}
if(sd_State(file)<0){
printf("Card didn't return the ready state, breaking up...\n\r");
return(-2);
}
// file->sectorCount=4; /* FIXME ASAP!! */
sd_getDriveSize(file, &sc);
file->sectorCount = sc/512;
if( (sc%512) != 0) {
file->sectorCount--;
}
printf("Drive Size is %d Bytes (%d sectors)\n\r ", sc, file->sectorCount);
if_spiSetSpeed(SPI_PRESCALE_MIN);
// if_spiSetSpeed(100); /* debug - slower */
printf("Init done...\n\r");
return 0;
}
void if_spiInit(hwInterface *iface)
{
euint8 i;
// setup GPIO
SPI_IODIR |= (1<<SPI_SCK_PIN)|(1<<SPI_MOSI_PIN)|(1<<SPI_SS_PIN);
SPI_IODIR &= ~(1<<SPI_MISO_PIN);
// set Chip-Select high - unselect card
UNSELECT_CARD();
// reset Pin-Functions
SPI_PINSEL &= ~( (3<<SPI_SCK_FUNCBIT) | (3<<SPI_MISO_FUNCBIT) |
(3<<SPI_MOSI_FUNCBIT) | (3<<SPI_SS_FUNCBIT) );
#if ( HW_ENDPOINT_LPC2000_SPINUM == 0 )
DBG((TXT("spiInit for SPI(0)\n")));
SPI_PINSEL |= ( (1<<SPI_SCK_FUNCBIT) | (1<<SPI_MISO_FUNCBIT) |
(1<<SPI_MOSI_FUNCBIT) );
// enable SPI-Master
S0SPCR = (1<<MSTR)|(0<<CPOL); // TODO: check CPOL
#endif
#if ( HW_ENDPOINT_LPC2000_SPINUM == 1 )
DBG((TXT("spiInit for SSP/SPI1\n")));
// setup Pin-Functions - keep automatic CS disabled during init
SPI_PINSEL |= ( (2<<SPI_SCK_FUNCBIT) | (2<<SPI_MISO_FUNCBIT) |
(2<<SPI_MOSI_FUNCBIT) | (0<<SPI_SS_FUNCBIT) );
// enable SPI-Master - slowest speed
SSPCR0 = ((8-1)<<0) | (0<<CPOL) | (0x20<<SCR); // (0xff<<SCR);
SSPCR1 = (1<<SSE);
#endif
// low speed during init
if_spiSetSpeed(254);
/* Send 20 spi commands with card not selected */
for(i=0;i<21;i++)
my_if_spiSend(iface,0xff);
#if ( HW_ENDPOINT_LPC2000_SPINUM == 0 )
// SPI0 does not offer automatic CS for slaves on LPC2138
// ( the SSEL-Pin is input-only )
// SELECT_CARD();
#endif
#if ( HW_ENDPOINT_LPC2000_SPINUM == 1 )
// enable automatic slave CS for SSP
SSPCR1 &= ~(1<<SSE); // disable interface
SPI_PINSEL |= ( (2<<SPI_SCK_FUNCBIT) | (2<<SPI_MISO_FUNCBIT) |
(2<<SPI_MOSI_FUNCBIT) | (2<<SPI_SS_FUNCBIT) );
SSPCR1 |= (1<<SSE); // enable interface
#endif
}
void if_spiInit(hwInterface *iface)
{
euint8 i;
SPI_Config();
MSD_CS_HIGH();
/* Send 20 spi commands with card not selected */
for(i=0;i<21;i++)
my_if_spiSend(iface,0xff);
/* Speed up */
if_spiSetSpeed(SPI_BaudRatePrescaler_2);
}
void if_spiInit(BYTE drive)
{
int i;
printf("spiInit for SPI(0)\n\r");
// Turn on the power
LPC_SC->PCONP |= (1<<8); // PCSPI
// Clock
LPC_SC->PCLKSEL0 &= ~(3<<16); // PCLK_SPI
LPC_SC->PCLKSEL0 |= (1<<16); // PCLK_periph = CCLK
// setup GPIO
LPC_GPIO0->FIODIR |= (1 << SPI_SCK_PIN) | (1 << SPI_MOSI_PIN) | (1 << SPI_SSEL_PIN);
LPC_GPIO0->FIODIR &= ~(1 << SPI_MISO_PIN);
//// reset Pin-Functions
// P0.15 set to SCK
LPC_PINCON->PINSEL0 &= ~SPI_SCK_FUNCMASK;
LPC_PINCON->PINSEL0 |= SPI_SCK_FUNCBIT;
// P0.16, P0.17, P0.18 set to SSEL,MISI, MOSI
SPI_PINSEL &= ~(SPI_MOSI_FUNCMASK | SPI_MISO_FUNCMASK | SPI_SSEL_FUNCMASK);
SPI_PINSEL |= (SPI_MOSI_FUNCBIT | SPI_MISO_FUNCBIT | SPI_SSEL_FUNCBIT);
// enable SPI-Master
LPC_SPI->SPCR = (1 << MSTR) | (0 << CPOL); // TODO: check CPOL
UNSELECT_CARD();
// Code for GPIO setup
/* Switch the SSI TX line to a GPIO and drive it high too. */
// P0.18 back to GPIO
LPC_PINCON->PINSEL1 &= ~(SPI_MOSI_FUNCMASK);
LPC_GPIO0->FIODIR |= (1<<SPI_MOSI_PIN);
LPC_GPIO0->FIOSET = (1<<SPI_MOSI_PIN);
// low speed during init
if_spiSetSpeed(254);
/* Send 20 spi commands with card not selected */
for(i=0;i<21;i++)
my_if_spiSend(file, 0xff);
// P0.18 back to SPI
LPC_PINCON->PINSEL1 |= (SPI_MOSI_FUNCBIT);
}
