ring.h

mc51单片机对rtl8019编程,实现ethernet的收发控制.

/*********************************************************
** FILE:
**	ring.h
** DESCRIPTION:
**	Define the data structure and operation for ring.
** NOTES:
**	Copyright(c) 2002 Luo Cheng , All rights reserved.
** HISTORY:
**	Version 	Date		Author
** 	1.0		2002/10/17	Luo Cheng	
**
*********************************************************/
#ifndef RING_H
#define RING_H

#include "types.h"

typedef struct {
	Uint16 	read,write,block_number;
	Uint16 	reserved :4;
	Uint16 	count :12;
	Uint16	element_number;
	Uint16	*pbuffer;
}ring_struc;
	
void ring_init(ring_struc *ring,void *pmem,Uint16 max_element_number,Uint8 max_block_number);
Bool ring_read(ring_struc *ring,void *pmem);
Bool ring_write(ring_struc *ring,void *pmem);

#endif