void soundInit( void ) {
AT91F_PIO_CfgPeriph(AT91C_BASE_PIOA, SPI_PERIPH, 0x0); //Sets the output lines required for the SPI.
AT91F_SPI_CfgPMC(); // Enables the SPI periphial clock.
AT91F_SPI_CfgMode (AT91C_BASE_SPI, SPI_MODE); //Sets the SPI's mode.
AT91F_SPI_CfgCs(AT91C_BASE_SPI, 0, CS_REG); // Sets the clients settings.
AT91F_SPI_Enable(AT91C_BASE_SPI); // Enables the SPI.
}
void poti_init(void)
{
AT91F_SPI_CfgPMC();
AT91F_PIO_CfgPeriph(AT91C_BASE_PIOA,
AT91C_PA13_MOSI | AT91C_PA14_SPCK, 0);
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC_PIO_SS2_DT_THRESH);
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, OPENPICC_PIO_SS2_DT_THRESH);
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPICC_PIO_nSLAVE_RESET);
poti_reset();
#if 0
AT91F_AIC_ConfigureIt(AT91C_BASE_AIC, AT91C_ID_SPI,
OPENPCD_IRQ_PRIO_SPI,
AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL, &spi_irq);
AT91G_AIC_EnableIt(AT9C_BASE_AIC, AT91C_ID_SPI);
#endif
AT91F_SPI_CfgMode(spi, AT91C_SPI_MSTR |
AT91C_SPI_PS_FIXED | AT91C_SPI_MODFDIS);
/* CPOL = 0, NCPHA = 1, CSAAT = 0, BITS = 0000, SCBR = 13 (3.69MHz),
* DLYBS = 6 (125nS), DLYBCT = 0 */
AT91F_SPI_CfgCs(spi, 0, AT91C_SPI_BITS_8 | AT91C_SPI_NCPHA |
(13 << 8) | (6 << 16));
AT91F_SPI_Enable(spi);
}
