u_int spi_buff[5000];

void test(void)
{
u_int b;
u_short a;

AT91C_BASE_PMC->PMC_PCER = (0x01 << AT91C_ID_TC0);

// Wave mode, MCK/8, UP mode with automatic trigger on RC Compare
AT91C_BASE_TCB->TCB_TC0.TC_CMR = AT91C_TC_CLKS_TIMER_DIV2_CLOCK | AT91C_TC_WAVESEL_UP | AT91C_TC_CPCSTOP | AT91C_TC_WAVE;
AT91C_BASE_TCB->TCB_TC0.TC_RC = 0xffff;
AT91C_BASE_TCB->TCB_TC0.TC_CCR = AT91C_TC_CLKEN;
AT91C_BASE_TCB->TCB_TC0.TC_CCR = AT91C_TC_SWTRG;

spi0_ini();
for(b = 0; b < 5000; b++)
spi_buff[b] = (0x07 << 0x10) | 0x55;
AT91C_BASE_SPI0->SPI_TPR = (u_int)spi_buff;
AT91C_BASE_SPI0->SPI_TCR = 5000;
AT91C_BASE_SPI0->SPI_RPR = (u_int)spi_buff;
AT91C_BASE_SPI0->SPI_RCR = 5000;

dprintf("bla-bla\r\n");

AT91C_BASE_SPI0->SPI_PTCR = AT91C_PDC_TXTEN | AT91C_PDC_RXTEN;

a = AT91C_BASE_TCB->TCB_TC0.TC_CV;
b = 0x100;
do
{
__asm
{
nop; nop; nop; nop; nop; nop; nop; nop;
nop; nop; nop; nop; nop; nop; nop; nop;
nop; nop; nop; nop; nop; nop; nop; nop;
nop; nop; nop; nop; nop; nop; nop; nop;
nop; nop; nop; nop; nop; nop; nop; nop;
nop; nop; nop; nop; nop; nop; nop; nop;
nop; nop; nop; nop; nop; nop; nop; nop;
nop; nop; nop; nop; nop; nop; nop; nop;
}
} while(--b );
a = AT91C_BASE_TCB->TCB_TC0.TC_CV - a;
dprintf("t=%d\r\n", a);

while(0x01);
}

void spi0_ini(void)
{
AT91C_BASE_SYS->PIOA_BSR = SPI0_CS1 | SPI0_CS2 | SPI0_CS3;
AT91C_BASE_SYS->PIOA_ASR = SPI0_CS0 | SPI0_MISO | SPI0_MOSI | SPI0_SPCK;
AT91C_BASE_SYS->PIOA_PDR = SPI0_CS1 | SPI0_CS2 | SPI0_CS3 | SPI0_CS0 | SPI0_MISO | SPI0_MOSI | SPI0_SPCK;

AT91C_BASE_PMC->PMC_PCER = (0x01 << AT91C_ID_SPI0);

AT91C_BASE_SPI0->SPI_CR = AT91C_SPI_SPIEN;
AT91C_BASE_SPI0->SPI_MR = AT91C_SPI_MODFDIS | AT91C_SPI_PS | AT91C_SPI_MSTR; // Master, Variable mode

AT91C_BASE_SPI0->SPI_CSR[0x03] = (0x01 << 0x08) | (0x00 << 0x04)
| AT91C_SPI_NCPHA | AT91C_SPI_CPOL; // Dummy: SPI Mode 2, MCK, 8 bits
}