/**
* \brief Configures spi in spi_mode with respect to state
*/
static void _ConfigureSpi( uint8_t state )
{
uint32_t mode = SPI_MR_MSTR ;
uint32_t csr0 ;
/* spi in slave mode */
if ( state == STATE_UM_SS )
{
mode &= (uint32_t) (~(SPI_MR_MSTR)) ;
}
csr0 = SPI_CSR_BITS_8_BIT | SPI_CSR_DLYBS(0xFF) ;
/* spi clock */
if ( state == STATE_US_SM )
{
csr0 |= ((BOARD_MCK/USART_SPI_CLK) << 8 ) ;
}
/* configure SPI mode */
SPI_Configure( SPI, ID_SPI, mode ) ;
NVIC_EnableIRQ( SPI_IRQn ) ;
/* configure SPI csr0*/
SPI_ConfigureNPCS( SPI, 0, csr0 ) ;
SPI_Enable( SPI ) ;
}
/**
* \brief Initialization of the SPI for communication with ADS7843 component.
*/
extern void ADS7843_Initialize( void )
{
volatile uint32_t uDummy;
/* Configure pins */
PIO_Configure(pinsSPI, PIO_LISTSIZE(pinsSPI));
PIO_Configure(pinBusy, PIO_LISTSIZE(pinBusy));
SPI_Configure(BOARD_TSC_SPI_BASE,
BOARD_TSC_SPI_ID,
SPI_MR_MSTR | SPI_MR_MODFDIS | SPI_PCS(BOARD_TSC_NPCS) /* Value of the SPI configuration register. */
);
SPI_ConfigureNPCS(BOARD_TSC_SPI_BASE, BOARD_TSC_NPCS,
SPI_CSR_NCPHA | SPI_CSR_DLYBS(DELAY_BEFORE_SPCK) |
SPI_CSR_DLYBCT(DELAY_BETWEEN_CONS_COM) | SPI_CSR_SCBR(0xC8) );
SPI_Enable(BOARD_TSC_SPI_BASE);
for (uDummy=0; uDummy<100000; uDummy++);
uDummy = REG_SPI_SR;
uDummy = REG_SPI_RDR;
SendCommand(CMD_ENABLE_PENIRQ);
}
void ledsInit(void){
uint8_t i;
//init SPI
SPI_Configure(SPI0, ID_SPI0, SPI_MR_MSTR | SPI_MR_MODFDIS | SPI_MR_PCS(0));
SPI_ConfigureNPCS(SPI0, 0 , SPI_CSR_NCPHA | SPI_CSR_BITS_12_BIT | SPI_CSR_SCBR(3) | SPI_CSR_DLYBS(2) | SPI_CSR_DLYBCT(0)); //30MHz spi speed
SPI_Enable(SPI0);
SPI0->SPI_IDR = 0xFFFFFFFF;
NVIC_EnableIRQ(SPI0_IRQn);
//init pins: SPI
gpioSetFun(MISO, GPIO_FUNC_A);
gpioSetFun(MOSI, GPIO_FUNC_A);
gpioSetFun(SCLK, GPIO_FUNC_A);
//init pins: debug LED
gpioSetFun(DBGLED, GPIO_FUNC_GPIO);
gpioSetDir(DBGLED, 0);
gpioSetVal(DBGLED, 0);
//init pins: latch
gpioSetFun(XLAT, GPIO_FUNC_GPIO);
gpioSetDir(XLAT, 0);
gpioSetVal(XLAT, 0);
//init pins: blanking
for(i = 0; i < sizeof(blanks); i++){
gpioSetFun(blanks[i], GPIO_FUNC_GPIO);
gpioSetDir(blanks[i], 0);
gpioSetVal(blanks[i], 1);
}
periodicAdd(ledUpdate, 0, 4);
}
