www.pudn.com > writemac.rar > dm643_flash_write.c

/* 
 *  Copyright 2003 by Spectrum Digital Incorporated. 
 *  All rights reserved. Property of Spectrum Digital Incorporated. 
 */ 
 
/* 
 *  ======== dm643_flash_write.c ======== 
 *  DM643_FLASH_write() implementation 
 */ 
 
#include  
#include  
 
#include  
#include  
 
/* Write data to a data range in Flash */ 
void DM643_FLASH_write(Uint32 src, Uint32 dst, Uint32 length) 
{ 
    Uint8 *psrc, *pdst; 
    Uint32 i; 
 
    /* Establish source and destination */ 
    psrc = (Uint8 *)src; 
    pdst = (Uint8 *)dst;  
    for (i = 0; i < length; i++) 
    { 
        // Program one 8-bit word 
        *((Uint8 *)DM643_FLASH_BASE) = 0xaa; 
        *((Uint8 *)DM643_FLASH_BASE) = 0x55; 
        *((Uint8 *)DM643_FLASH_BASE) = 0xa0; 
        *pdst = *psrc; 
         
        // Wait for operation to complete 
        while(1) 
            if (*pdst == *psrc) 
                break; 
                 
        pdst++; 
        psrc++; 
    } 
     
    /* Put back in read mode */ 
    *((Uint16 *)DM643_FLASH_BASE) = 0xf0;     
}