seven1.c

用C语言编写的SPI串行接口的DSp源程序

#include "REGISTER.H"
int  GPR0,GPR3;
int  j=0,ACC=0;
int    *PTR;
void  main()
{ GPR3=0X0000;
  PTR=(int *)0X0200;					
 asm(" SETC INTM");					

 asm(" CLRC SXM");
 asm(" CLRC OVM");
 asm(" CLRC CNF");
 *WDCR=0X006F;						
 *SCSR1=0X0020;						

SPI_INIT:
 *SPICCR=0X000F;						
 *SPICTL=0X0002;						
 *SPIBRR=0X0002;						
 *MCRB=0X003C;						
 *SPICCR=0X008F;				
       for(j=0;j<5;j++)
   {  
       while(1)
       {ACC=*SPISTS;
        ACC=ACC|0X0040;
         if(*SPISTS==ACC)		
       break;                         
       }
       ACC=*SPIRXBUF;        	
       *(PTR+j)=ACC; 
   }   
   while(1)
   {;}

}