与模拟SPI不同的就这两个函数：
bool SPI_WriteData(unsigned char val)
{
unsigned char temp;
UCB1TXBUF=val;
while (!(UCB1IFG&UCTXIFG));
while (!(UCB1IFG&UCRXIFG));
temp=UCB1RXBUF;
return TRUE;
}
unsigned char SPI_ReadData(void)
{
unsigned char val;
UCB1TXBUF=0x00;
while (!(UCB1IFG&UCTXIFG));
while (!(UCB1IFG&UCRXIFG));
val=UCB1RXBUF;
return val;
}
spi初始化函数：
void SPIFlash_Init(void)
{
//P4.3,2,1 option select
unsigned int temp;
P4DIR |=BIT0;//;//P4.0 P4.1 P4.3 output
P4OUT|=BIT0;//CS=H
UCB1CTL1 |=UCSWRST;//SPI enable
UCB1CTL0 =0X29;
UCB1CTL1 &= ~(UCSSEL_3);
UCB1CTL1 |=0X40;
UCB1STAT &=0x01;
UCB1BR0 =0x04;
UCB1BR1 =0x00;
P4SEL |=(BIT1+BIT2+BIT3);//04.1 p4.2 p4.3 SCK SI SO
P4DIR |=(BIT1+BIT3);//P4.0 P4.1 P4.3 output
P4DIR &=~BIT2; //p4.2 input
UCB1CTL1 &=~UCSWRST;//SPI enable
__delay_cycles(100);
}
郁闷。430啊，问ti的技术，不尿。郁闷
