link.h

这是单板上DPRAM的驱动程序

#ifndef _LINK_H
#define _LINK_H

#define SDB_LINK 110000
#define LINK_DATA_BUF_LEN   4 /* must be multiple of 4 */

typedef struct tagLinkBufStruct
{  
    struct tagLinkBufStruct *Next;
    ULONG Length;
    UCHAR Data[LINK_DATA_BUF_LEN];
}LinkBufStruct; 

typedef struct tagLinkStruct
{
    LinkBufStruct *Head;
    LinkBufStruct *Tail;
    ULONG Number;
}LinkStruct;

void LinkInit(LinkStruct *link);
void LinkAppendBuf(LinkStruct *link, LinkBufStruct *buf);
LinkBufStruct *LinkGetBuf(LinkStruct *link);
#define LinkNumber(link) ((link)->Number)

#endif