c6xad.c

DSP6000开发板QuickStartpdf文档

/*****************************************************************************/
/*  (C) Copyright 2001 by Wintech Inc. Write by pacificxu                    */
/*  All rights reserved                                                      */
/*****************************************************************************/


	#define EMIF_GCTL       0x01800000
	#define EMIF_CE1        0x01800004
	#define EMIF_CE0        0x01800008
	#define EMIF_CE2        0x01800010
	#define EMIF_CE3        0x01800014
	#define EMIF_SDRAMCTL   0x01800018
	#define EMIF_SDRAMREF   0x0180001c
    
	#define nAddrADTest     0x3380000
        #define DU_RAM_STADDR	0x1400000
 main()
{
/***********************************************************
 * Edit values below to conform to your specifications
 * The following assumes the EVM6x memory configuration
 ***********************************************************/
            
long B0,tim1;            
        /* OK for 133, 160 MHK CPU clock rate */
        *(int *)EMIF_GCTL = 0x3060;

        /* CE1 */
        *(int *)EMIF_CE1 = 0x0b300a23;

        /* CE0 SBSRAM */
        *(int *)EMIF_CE0 = 0x40;

        /* CE2 and CE3 SDRAM */
        *(int *)EMIF_CE2 = 0x30;
        *(int *)EMIF_CE3 = 0x0b300a23;

        /* 133 MHz, use 0x7227000 for 160 MHz */
        *(int *)EMIF_SDRAMCTL = 0x7116000;

        /* 133 MHz, use 0x4e1 for 160 MHz */
        *(int *)EMIF_SDRAMREF = 0x410;      
        
        /*start AD    */           
       	*(int *)nAddrADTest = 0x1f;
       	
        for (tim1=0;tim1<0x3000;tim1++)    
        {
         asm("	NOP");
        }
            

        /*end AD    */               	  
       	*(int *)nAddrADTest = 0x0;    
       	 
       	 B0=0;
       	 
     while (B0<0x2000)
	 {
	  *(int *)(0x400000+B0)=((*(int*)(DU_RAM_STADDR+B0) & 0xFFF)<<20)/0x100000;
	  *(int *)(0x404000+B0)=((*(int *)(DU_RAM_STADDR+B0)>>16 & 0xFFF)<<20)/0x100000;

	  B0=B0+4;
	 }                                      
    
                          
}