#ifndef DRIVER_BUFFER_H_
#define DRIVER_BUFFER_H_

//引入標準的bool變量定義
#include <stdbool.h>

#ifndef NULL
#define NULL 0
#endif

#define DATA_TYPE unsigned char

typedef struct T_DBuffer
{
	DATA_TYPE *front;
	DATA_TYPE *rear;
	DATA_TYPE *head;
	DATA_TYPE *end;
	unsigned int length;	//current number of elements
	unsigned int size;    //max size of the buffer
}DBuffer;

bool DBuffer_Create(DBuffer *DBuf /*driver buffer pointer*/, DATA_TYPE *Buf /*buffer*/, unsigned int BufSize /*size of buffer*/);
bool DBuffer_Write(DBuffer *DBuf /*driver buffer*/, DATA_TYPE Data /*data to write*/);
bool DBuffer_Read(DBuffer *DBuf  /*driver buffer*/, DATA_TYPE *Data /*data address to store*/);
void DBuffer_Flush(DBuffer *DBuf);	//flush the buffer

#endif /*DRIVER_BUFFER_H_*/