现在手头上有个项目，CPU是LPC2103，他的SPI0用作从机，主机则是CS5571，此时CS5571的时钟16MHz，可是只要LPC2103采用SPI中断方式程序就死机，我采用是前后台程序。
对SPI采用查询方式时，程序是能够正常工作的，不知是怎么回事，望大家帮看看，是错在那了！
感谢！
SPI初始化：
INT8U SPI0SInit(void)
{
INT16U stemp;
INT32U ltemp;
//SPI0 引脚定义
ltemp = PINSEL0;
ltemp &= 0xffff00ff;//0xffff0cff;
ltemp |= 0x00004500;//0x00005100; //SSEL,MOSI,SCK
PINSEL0 = ltemp;
stemp = S0PCR;
stemp &= 0xf003;
stemp |= 0x0084; //0x0004;0x0084
S0PCR = stemp;
return TRUE;
}
SPI中断
void SPI0_Exception(void)
{
INT16U stemp;
INT8U temp;
OS_ENTER_CRITICAL();
temp = S0PSR;
if((temp&0x10)!=0) { //模式错误
stemp = S0PCR;
stemp &= 0xf003;
stemp |= 0x0084; //0x0004;
S0PCR = stemp;
}
if((temp&0x40)!=0) { //写冲突
stemp = S0PDR;
}
if((temp&0x80)!=0) { //SPI 传输完成标志
SPIData = S0PDR;
}
S0PINT = 0x01;
VICVectAddr = 0; // 通知中断控制器中断结束
OS_EXIT_CRITICAL();
}
void VICInit(void)
{
extern void IRQ_Handler(void);
extern void Timer0_Handler(void);
extern void SPI0_Exception(void);
extern void UART0_Handler(void);
// extern void UART1_Handler(void);
// extern void EINT0_Handler(void);
extern void Timer1_Handler(void);
VICIntEnClr = 0xffffffff;
VICDefVectAddr = (uint32)IRQ_Handler;
VICVectAddr1 = (uint32)Timer0_Handler;
VICVectCntl1 = (0x20 | 4);
VICIntEnable = 1 << 4;
VICVectAddr10 = (INT32U)SPI0_Exception;
VICVectCntl10 = (0x20 | 10);
VICIntEnable = 1 << 10;
VICVectAddr2 = (INT32U)UART0_Handler;
VICVectCntl2 = (0x20 | 6);
VICIntEnable = 1 << 6;
// VICVectAddr2 = (INT32U)UART1_Handler;
// VICVectCntl2 = (0x20 | 7);
// VICIntEnable = 1 << 7;
// VICVectAddr4 = (INT32U)EINT0_Handler;
// VICVectCntl4 = (0x20 | 14);
//VICIntEnable = 1 << 14;
VICVectAddr3 = (uint32)Timer1_Handler;
VICVectCntl3 = (0x20 | 5);
VICIntEnable = 1 << 5;
}
相关链接:http://www.honestar.com/product/datasheet/CIRRUS/CIRRUS/CS5571_A5.pdf |
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