?? obj_buffer.h
字號:
//*----------------------------------------------------------------------------
//* ATMEL Microcontroller Software Support - ROUSSET -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name : drv_buffer.h
//* Object : Application pipe interface
//*
//* 1.0 20/06/01 : ODi Creation
//*----------------------------------------------------------------------------
#ifndef obj_buffer_h
#define obj_buffer_h
// Return values
#define AT91C_BUFFER_SUCCESS 0
#define AT91C_BUFFER_ERROR_SHIFT 16
#define AT91C_BUFFER_ERROR (0x0F << AT91C_BUFFER_ERROR_SHIFT)
#define AT91C_BUFFER_OVERFLOW (0x01 << AT91C_BUFFER_ERROR_SHIFT)
#define AT91C_BUFFER_UNDERRUN (0x02 << AT91C_BUFFER_ERROR_SHIFT)
typedef unsigned int AT91S_BufferStatus;
struct _AT91S_Pipe;
// This structure is a virtual object of a buffer
typedef struct _AT91S_Buffer
{
struct _AT91S_Pipe *pPipe;
void *pChild;
// Functions invoked by the pipe
AT91S_BufferStatus (*SetRdBuffer) (struct _AT91S_Buffer *pSBuffer, char *pBuffer, unsigned int Size);
AT91S_BufferStatus (*SetWrBuffer) (struct _AT91S_Buffer *pSBuffer, char const *pBuffer, unsigned int Size);
AT91S_BufferStatus (*RstRdBuffer) (struct _AT91S_Buffer *pSBuffer);
AT91S_BufferStatus (*RstWrBuffer) (struct _AT91S_Buffer *pSBuffer);
char (*MsgWritten) (struct _AT91S_Buffer *pSBuffer, char const *pBuffer);
char (*MsgRead) (struct _AT91S_Buffer *pSBuffer, char const *pBuffer);
// Functions invoked by the peripheral
AT91S_BufferStatus (*GetWrBuffer) (struct _AT91S_Buffer *pSBuffer, char const **pData, unsigned int *pSize);
AT91S_BufferStatus (*GetRdBuffer) (struct _AT91S_Buffer *pSBuffer, char **pData, unsigned int *pSize);
AT91S_BufferStatus (*EmptyWrBuffer) (struct _AT91S_Buffer *pSBuffer, unsigned int size);
AT91S_BufferStatus (*FillRdBuffer) (struct _AT91S_Buffer *pSBuffer, unsigned int size);
char (*IsWrEmpty) (struct _AT91S_Buffer *pSBuffer);
char (*IsRdFull) (struct _AT91S_Buffer *pSBuffer);
} AT91S_Buffer, *AT91PS_Buffer;
typedef AT91S_BufferStatus (*AT91PF_BufferSetRd) (AT91PS_Buffer, char*, unsigned int);
typedef AT91S_BufferStatus (*AT91PF_BufferSetWr) (AT91PS_Buffer, char const *, unsigned int);
typedef AT91S_BufferStatus (*AT91PF_BufferRstRd) (AT91PS_Buffer);
typedef AT91S_BufferStatus (*AT91PF_BufferRstWr) (AT91PS_Buffer);
typedef char (*AT91PF_BufferMsgWritten) (AT91PS_Buffer, char const *);
typedef char (*AT91PF_BufferMsgRead) (AT91PS_Buffer, char const *);
typedef AT91S_BufferStatus (*AT91PF_BufferGetWr) (AT91PS_Buffer, char *const*, unsigned int *);
typedef AT91S_BufferStatus (*AT91PF_BufferGetRd) (AT91PS_Buffer, char **, unsigned int *);
typedef AT91S_BufferStatus (*AT91PF_BufferEmptyWr) (AT91PS_Buffer, unsigned int);
typedef AT91S_BufferStatus (*AT91PF_BufferFillRd) (AT91PS_Buffer, unsigned int);
typedef char (*AT91S_BufferIsWrEmpty) (struct _AT91S_Buffer *pSBuffer);
typedef char (*AT91S_BufferIsRdFull) (struct _AT91S_Buffer *pSBuffer);
#endif
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