/*
//setup limits 4x3 array with default values
static char limits[4][3] = 	
		{30, 100, 120, 
		 30, 100, 120, 
		 30, 100, 120, 
		 30, 100, 120};
*/


//setup 3 4x1 for calibration variables		 
static char max[4] = {101,101,101,101};
static char min[4] = {99,99,99,99};
static char neutral[4] = {100,100,100,100};

//setup 4x1 array for raw potentiometer values
static char raw[4];		

//functions
void a2d_init(void);
char a2d_convert(char channel);
void a2d_find_boundary(void);
void a2d_find_neutral(void);
void a2d_scale_all(char stick[]);
void a2d_convert_all(void);
void a2d_calibrate(void);
void init_keys_io(void);