dfusimplebuffer.c

at91rm9200 的rom程序

//*----------------------------------------------------------------------------
//*      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           : DfuSimpleBuffer.c
//* Object              : Low level functions to manage simple buffer for Dfu
//*
//* 1.0 23/03/01 	    : Creation
//*----------------------------------------------------------------------------

#include <stdio.h>
#include "appli\includes\StructDfu.h"
#include "appli\includes\main.h"

#define	MAX_SIZE_PDC	(64*1024)

#if DFU_ENABLE
//*----------------------------------------------------------------------------
//* Function Name       : SetOutSimpleBuffer()
//* Object              : 
//* Input Parameters    : 
//* Output Parameters   : 
//*----------------------------------------------------------------------------
unsigned int SetOutSimpleBuffer(SBuffer *pBuffer, char const *Buffer, const unsigned int Size)
{	
	Simple_Buffer *SimpleBuffer;	
	SimpleBuffer = (Simple_Buffer *)(pBuffer->SRamBuffer);
	SimpleBuffer->pBufferOut = (char *)Buffer;
	SimpleBuffer->SizeWrite = Size;
}


//*----------------------------------------------------------------------------
//* Function Name       : SetInSimpleBuffer()
//* Object              : 
//* Input Parameters    : 
//* Output Parameters   : 
//*----------------------------------------------------------------------------
unsigned int SetInSimpleBuffer(SBuffer *pBuffer, const char *Buffer, const unsigned int Size)
{
	Simple_Buffer *SimpleBuffer;	
	SimpleBuffer = (Simple_Buffer *)(pBuffer->SRamBuffer);
	SimpleBuffer->SizeRead = Size;
	SimpleBuffer->pBufferIn = (char *)Buffer;
}


//*----------------------------------------------------------------------------
//* Function Name       : IsSimpleBufferFull()
//* Object              : 
//* Input Parameters    : 
//* Output Parameters   : 
//*----------------------------------------------------------------------------
char IsSimpleBufferFull(SBuffer *pBuffer)
{
	Simple_Buffer *SimpleBuffer;
	SimpleBuffer = (Simple_Buffer *)(pBuffer->SRamBuffer);
	if (SimpleBuffer->SizeRead > 0)	
		return BUFFER_NOT_FULL;
	return BUFFER_FULL;
}


//*----------------------------------------------------------------------------
//* Function Name       : IsSimpleBufferEmpty()
//* Object              : 
//* Input Parameters    : 
//* Output Parameters   : return 
//*----------------------------------------------------------------------------
char IsSimpleBufferEmpty(SBuffer *pBuffer)
{
	Simple_Buffer *SimpleBuffer;
	SimpleBuffer = (Simple_Buffer *)(pBuffer->SRamBuffer);
	if (SimpleBuffer->SizeWrite > 0)	
		return BUFFER_NOT_EMPTY;
	return BUFFER_EMPTY;
}


//*----------------------------------------------------------------------------
//* Function Name       : ReadSimpleBuffer()
//* Object              : 
//* Input Parameters    : 
//* Output Parameters   : 
//*----------------------------------------------------------------------------
char *ReadSimpleBuffer(SBuffer *pBuffer, unsigned int *Size)
{
	Simple_Buffer *SimpleBuffer;
	SimpleBuffer = (Simple_Buffer *)(pBuffer->SRamBuffer);
	*Size = SimpleBuffer->SizeWrite;
	return ((char *)SimpleBuffer->pBufferOut);
}


//*----------------------------------------------------------------------------
//* Function Name       : WriteSimpleBuffer()
//* Object              : 
//* Input Parameters    : 
//* Output Parameters   : 
//*----------------------------------------------------------------------------
char *WriteSimpleBuffer(SBuffer *pBuffer, unsigned int *Size)
{
	Simple_Buffer *SimpleBuffer;
	SimpleBuffer = (Simple_Buffer *)(pBuffer->SRamBuffer);
	*Size = SimpleBuffer->SizeRead;
	return ((char *)SimpleBuffer->pBufferIn);
}


//*----------------------------------------------------------------------------
//* Function Name       : Free()
//* Object              : 
//* Input Parameters    : 
//* Output Parameters   : 
//*----------------------------------------------------------------------------
void FreeSimpleBuffer(SBuffer *pBuffer, const unsigned int Size, unsigned int TransfertDirection)
{
	Simple_Buffer *SimpleBuffer;
	SimpleBuffer = (Simple_Buffer *)(pBuffer->SRamBuffer);
	if (TransfertDirection == 0)
	{
		//* Read 
		SimpleBuffer->SizeRead -= Size;
	}
	else
	{	
		//* Write
		SimpleBuffer->SizeWrite -= Size;
		SimpleBuffer->pBufferOut += Size;
	}
}
#endif