FIFO.c File Reference

FIFO container source file. More...

#include "FIFO.h"

Go to the source code of this file.

Functions
tBoolean	FIFO_isBufferFull (unsigned int *pulRead, unsigned int *pulWrite, unsigned int ulSize)
tBoolean	FIFO_isBufferEmpty (unsigned int *pulRead, unsigned int *pulWrite)
unsigned int	FIFO_getBufferCount (unsigned int *pulRead, unsigned int *pulWrite, unsigned int ulSize)

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Detailed Description

FIFO container source file.

This file contains the definations of the basic functions of the FIFO data stucture.

Definition in file FIFO.c.

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Function Documentation

unsigned int FIFO_getBufferCount	(	unsigned int *	pulRead,
		unsigned int *	pulWrite,
		unsigned int	ulSize
	)

Parameters:

pulRead
pulWrite
ulSize

Returns:

Definition at line 37 of file FIFO.c.

{
    return ( ( *pulWrite >= *pulRead ) ? ( *pulWrite - *pulRead ) : ( ulSize - ( *pulRead - *pulWrite ) ) );
}

tBoolean FIFO_isBufferEmpty	(	unsigned int *	pulRead,
		unsigned int *	pulWrite
	)

Parameters:

pulRead
pulWrite

Returns:

Definition at line 28 of file FIFO.c.

{
    // if the number of the read characters are the same as the written the fifo is empty
    return ( ( *pulWrite  == *pulRead ) ? 1 : 0 );
}

tBoolean FIFO_isBufferFull	(	unsigned int *	pulRead,
		unsigned int *	pulWrite,
		unsigned int	ulSize
	)

Parameters:

pulRead
pulWrite
ulSize

Returns:

Definition at line 19 of file FIFO.c.

{
    //  if the writing pointer catch up the read pointer the fifo is full
    return ( ( ( ( *pulWrite + 1 ) % ulSize ) == *pulRead ) ? 1 : 0 );
}