EX_INTERRUPT_HANDLER(SPI_ISR)
{
int i=0;
  
    *pSIC_IMASK &= ~0x00002000;//spi 写0 屏蔽中断  
      
        while(!(*pSPI_STAT&0x20));
  

            buffer[i++]=*pSPI_RDBR;
              

      if(buffer[i]==0xc0)
           {
          // count++;
            }
            count++;
    

  *pSIC_IMASK |= 0x00002000;//spi 写1 使能spi中断
      
    }
    
}
中断函数里 count 和buffer为全局变量 然后在主函数打印每次+1

void Init_SPI_Interrupts(void)
{

// configure interrupt
*pSIC_IAR0 = *pSIC_IAR0 & 0xffffffff | 0x00000000;
  *pSIC_IAR1 = *pSIC_IAR1 & 0xf00fffff | 0x00400000; //

    *pSIC_IAR2 = *pSIC_IAR2 & 0xffffffff | 0x00000000;
              
      register_handler(ik_ivg11, SPI_ISR); //dma5中断五 spi中断

  
     *pIMASK |=0x00001000;
    *pSIC_IMASK |= 0x00002000; // SPI interrupt enabled
  

}
中断初始化函数

int main( void )
{
/* Begin adding your custom code here */

int flag=1;
    int i;
    unsigned char temp = 0;

Set_PLL(16,3);
Init_EBIU();

   Init_SPI_Interrupts();

  
  Drv_config_to_slave();
    Drv_SPI_enable();
    memset(buffer,0,1024);
       Drv_Config_slave_read();  
    

    while(flag)
    {
     printf("count is %x\n",count);
    
    
    }
    
    
return 0;
}

主函数    主设备发送十几字节  从设备为啥只进一次中断、？？？？