void c6747_spi_init()
{
Uint32 spidat1;
SPI_SPIGCR0=0;
C6747_wait(0xff);
SPI_SPIGCR0=1;
SPI_SPIGCR1=0
|(0<<24)
|(0<<16)
|(1<<1)
|(1<<0);
// spidat1=0
// |(0<<28)
// |(0<<24)
// |(2<<16)// CSRN [only CS0 enabled]
// |(0<<0);
spidat1=0
|(0<<28)
|(0<<24)
|(0<<16)// CSRN [only CS0 enabled]
|(0<<0);
SPI_SPIDAT1=spidat1;
SPI_SPIDEF=0
// |(1<<1)
|(1<<0); //define the state of the SPIx_SCS[n] pins when no transmissions are performed.
SPI_SPIFMT0=0
|(0<<20) //most significant bit is shifted our first
|(0<<17)
|(1<<16) //mode 1——数据在第一个SPIx_CLK的上升沿之前的半个周期输出；在SPIx_CLK的上升沿锁存
|(3<<8) //SPIclk=25*30/2/2/4
|(8<<0); //SPI data word length 8bits
SPI_SPIDELAY=0
|(18<<24)
|(18<<16);
SPI_SPIINT=0
|(0<<16)
|(0<<8)
|(0<<6)
|(1<<4);//enables interrupt on the error
SPI_SPILVL=0
|(0<<8) //Receive interrupt is mapped to interrupt line INT1 it is 1;(reserved)
|(0<<6) //Receive overrun interrupt is mapped to interrupt line INT1 it is 1;(reserved)
|(0<<4);//Bit error interrupt is mapped to the interrupt the INT1 if it is 1;(reserved)
SPI_SPIPC0=0
|(1<<11)
|(1<<10)
|(1<<9)
|(0<<8)
|(1<<0);
// SPI_SPIPC1=0
// |(1<<11)
// |(1<<10)
// |(1<<9)
// |(0<<8)
// |(1<<0);
SPI_SPIGCR1|=(1<<24);
}
/************************************************************************** *
* *
* C6747_waitusec( usec ) * *
* Wait in a software loop for 'x' microseconds *
* *
* ************************************************************************ */
void C6747_waitusec( Uint32 usec )
{
C6747_wait( usec * 3 );
}
