speeduino/speeduino/table2d.h

/*
This file is used for everything related to maps/tables including their definition, functions etc
*/
#ifndef TABLE_H
#define TABLE_H

#include "globals.h"

#define SIZE_SIGNED_BYTE    4
#define SIZE_BYTE           8
#define SIZE_INT            16

/*
The 2D table can contain either 8-bit (byte) or 16-bit (int) values
The valueSize variable should be set to either 8 or 16 to indicate this BEFORE the table is used
*/
struct table2D {
  //Used 5414 RAM with original version
  byte valueSize;
  byte axisSize;
  byte xSize;

  void *values;
  void *axisX;

  //int16_t *values16;
  //int16_t *axisX16;

  //Store the last X and Y coordinates in the table. This is used to make the next check faster
  int16_t lastXMax;
  int16_t lastXMin;

  //Store the last input and output for caching
  int16_t lastInput;
  int16_t lastOutput;
  byte cacheTime; //Tracks when the last cache value was set so it can expire after x seconds. A timeout is required to pickup when a tuning value is changed, otherwise the old cached value will continue to be returned as the X value isn't changing. 
};

int16_t table2D_getAxisValue(struct table2D *fromTable, byte X_in);
int16_t table2D_getRawValue(struct table2D *fromTable, byte X_index);

int table2D_getValue(struct table2D *fromTable, int X_in);

#endif // TABLE_H