#include        "c5416.h"
#include        "TMS320.H"
#include        "c54fir.h"
#include        "test.dat"     
unsigned int rrdy,xrdy;
unsigned int data_buffer;

void cpu_init()          /*初始化DSP*/
{
   asm(" ssbx intm");
   PMST=0xe8;     
   SWWSR=0x7fff;
   SWCR=0x0000;
   IMR=0; 
   IFR=0xff;   
}
 
void delay()              /*WAIT*/
{
   asm(" STM #0008h, AR0"); 
   asm(" RPT *AR0"); 		
   asm(" NOP");
}    		

void mcbsp_init()
{      
   SPSA1=SPCR11;
   SPSD1=0x0000;
   SPSA1=SPCR21;
   SPSD1=0x0200;
   SPSA1=PCR1;        
   SPSD1=0x000c;            /*PCR1=000CH*/
   SPSA1=SPCR11;
   SPSD1=0x0000;
   SPSA1=SPCR21;
   SPSD1=0x0000;
   SPSA1=RCR11;
   SPSD1=0x0040;            /*RCR1=0040H*/
   SPSA1=RCR21;
   SPSD1=0x0004;            /*RCR2=0004H*/
   SPSA1=XCR11;
   SPSD1=0x0040;            /*XCR1=0040H*/
   SPSA1=XCR21;
   SPSD1=0x0004;            /*XCR2=0004H*/
   delay();  
   DMPREC=DMPREC&0xff3f;    /*BRINT,BXINT*/
   DXR11=0;                 
   /*啟動(dòng)MCBSp串口*/
   SPSA1=SPCR11;
   SPSD1=0x0001;            
   SPSA1=SPCR21;
   SPSD1=0x0201;
   delay();
}

void aic_init()
{ 
   IMR=IMR|0x030;
   IFR=0xffff;                    
   DXR11=0x0001;            /*DIN的LSB為1，與AD50二次通訊*/
   xrdy=0;  
   while(!xrdy)           
   {
     SPSA1=SPCR21;
     xrdy=(SPSD1&0x0002)>>1; 
   }
        
   DXR11=0x010c;            /*設(shè)置Control1寄存器*/                     
   xrdy=0;
   while(!xrdy)           
   {
     SPSA1=SPCR21;
     xrdy=(SPSD1&0x0002)>>1;
   }
        

   DXR11=0x0001;            /*DIN的LSB為1，與AD50二次通訊*/
   xrdy=0;  
   while(!xrdy)           
   {
     SPSA1=SPCR21;
     xrdy=(SPSD1&0x0002)>>1; 
   }
        
   DXR11=0x0280;            /*設(shè)置Control1寄存器*/                     
   xrdy=0;
   while(!xrdy)           
   {
     SPSA1=SPCR21;
     xrdy=(SPSD1&0x0002)>>1;
   }                             
                                                  
                                                                                            
   DXR11=0x0001;           /*DIN的LSB為1，與AD50二次通訊*/
   xrdy=0;
   while(!xrdy)           
   {
     SPSA1=SPCR21;
     xrdy=(SPSD1&0x0002)>>1;
   } 
       
   DXR11=0x0405;            /*設(shè)置Control4寄存器*/
   xrdy=0;
   while(!xrdy)           
   {
     SPSA1=SPCR21;
     xrdy=(SPSD1&0x0002)>>1;
   }     
   asm(" rsbx intm"); 
   DXR11=DRR11;             /*傳送一個(gè)啞元，結(jié)束操作*/  
}
int i=0x0;
main()
{
   cpu_init(); 
   dptr=p;
   for(i=0;i<32;i++)p[i]=0;
   mcbsp_init(); 
   aic_init();
   for(;;)
   {}          
} 

interrupt void brint0_int()
{  data_buffer=DRR11;
   DXR11=data_buffer&0xfffe;
   x[i]=data_buffer;
   i++;
   if(i==256)
   {
   fir( x, y, r, &dptr, 31, 256);
   i=0x0;
   }

} 

interrupt void bxint0_int()
{

   asm(" rsbx xf");	
}