FIFO.h File Reference

Provides Functions to initialize FIFO, uses index implementation and macro. More...

#include "startup.h"
#include "cpu_vars.h"

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Macros
#define	AddIndexFifo(NAME, SIZE, TYPE, SUCCESS, FAIL)
#define	AddPointerFifo(NAME, SIZE, TYPE, SUCCESS, FAIL)

Detailed Description

Provides Functions to initialize FIFO, uses index implementation and macro.

Author

Valvano

Date

2/04/2019

Definition in file FIFO.h.

Macro Definition Documentation

AddIndexFifo

#define AddIndexFifo	(		NAME,
			SIZE,
			TYPE,
			SUCCESS,
			FAIL
	)

Value:

uint32_t volatile NAME ## PutI;    \
uint32_t volatile NAME ## GetI;    \
TYPE static NAME ## Fifo [SIZE];        \
void NAME ## Fifo_Init(void){ long sr;  \
  sr = StartCritical();                 \
  NAME ## PutI = NAME ## GetI = 0;      \
  EndCritical(sr);                      \
}                                       \
int NAME ## Fifo_Put (TYPE data){       \
  if(( NAME ## PutI - NAME ## GetI ) & ~(SIZE-1)){  \
    return(FAIL);      \
  }                    \
  NAME ## Fifo[ NAME ## PutI &(SIZE-1)] = data; \
  NAME ## PutI ## ++;  \
  return(SUCCESS);     \
}                      \
int NAME ## Fifo_Get (TYPE *datapt){  \
  if( NAME ## PutI == NAME ## GetI ){ \
    return(FAIL);      \
  }                    \
  *datapt = NAME ## Fifo[ NAME ## GetI &(SIZE-1)];  \
  NAME ## GetI ## ++;  \
  return(SUCCESS);     \
}                      \
unsigned short NAME ## Fifo_Size (void){  \
 return ((unsigned short)( NAME ## PutI - NAME ## GetI ));  \
}

Definition at line 38 of file FIFO.h.

AddPointerFifo

#define AddPointerFifo	(		NAME,
			SIZE,
			TYPE,
			SUCCESS,
			FAIL
	)

Definition at line 72 of file FIFO.h.