fifobuffer.h

来自「这是一个基于c8051F060的示波器程序」· C头文件 代码 · 共 48 行

#ifndef   DIS_BUFFER_H
#define   DIS_BUFFER_H

#define   DMA_BLOCK_SIZE 64
#define   POOL_BLOCK_NUM 5
//#define   POOL_SIZE      DMA_BLOCK_SIZE*POOL_BLOCK_NUM
#define   data_type    xdata   

typedef unsigned int    u16;
typedef unsigned char   u8;


//define buffer
typedef  struct tag_node Node;
struct tag_node
{
    u16   buffer[DMA_BLOCK_SIZE];    
	u8    len;
    struct tag_node *next;
};

//define POOL
typedef struct tag_pool POOL;
struct tag_pool
{
		Node  pool[POOL_BLOCK_NUM];
		u8   header;
		u8   tailer;
		u8   curlen;
};


extern Node* FIFOHeader;
extern Node* FIFOTailer;
extern POOL  data_type DMAPool;


//functions 
extern  u8 InsertBuffer(u16 *p,  u8 len );
extern  u8 ReadBuffer(u16 *p,  u16 len );
//extern  u8 DestroyBuffer(void);      

extern  Node* _k_malloc_();
extern  u8 _free_(Node *p );
extern  void InitPOOL(void);
extern  void InitFIFOBuffer(void);
#endif