/* Microchip Technology Inc. and its subsidiaries.  You may use this software 
 * and any derivatives exclusively with Microchip products. 
 * 
 * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS".  NO WARRANTIES, WHETHER 
 * EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED 
 * WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A 
 * PARTICULAR PURPOSE, OR ITS INTERACTION WITH MICROCHIP PRODUCTS, COMBINATION 
 * WITH ANY OTHER PRODUCTS, OR USE IN ANY APPLICATION. 
 *
 * IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, 
 * INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND 
 * WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS 
 * BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE.  TO THE 
 * FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS 
 * IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF 
 * ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
 *
 * MICROCHIP PROVIDES THIS SOFTWARE CONDITIONALLY UPON YOUR ACCEPTANCE OF THESE 
 * TERMS. 
 */

/* 
 * File:   
 * Author: 
 * Comments:
 * Revision history: 
 */

// This is a guard condition so that contents of this file are not included
// more than once.  
#ifndef XPT2046_H
#define	XPT2046_H

#include <xc.h> // include processor files - each processor file is guarded.  
#include <stdint.h>
#include <stdbool.h>



#define CAL_MARGIN              0  
#define CTRL_LO_DFR             0x03
#define CTRL_LO_SER             0x04
#define CTRL_HI_X               0x90
#define CTRL_HI_Y               0xD0
#define ADC_MAX                 0x0fff // 12 bits

typedef enum {
    ROT0, ROT90, ROT180, ROT270
} rotation_t;


typedef enum {
    MODE_SER, MODE_DFR
} adc_ref_t;


extern int32_t _cal_dx, _cal_dy, _cal_dvi, _cal_dvj;
extern uint16_t _cal_vi1, _cal_vj1;
extern uint16_t t_width, t_height;
extern rotation_t _rot;

void begin(uint16_t width, uint16_t height);

void setRotationTouch(rotation_t rot);
// Calibration needs to be done with no rotation, on both display and touch drivers
void getCalibrationPoints(uint16_t *x1, uint16_t *y1, uint16_t *x2, uint16_t *y2);
void getPosition(uint16_t *x, uint16_t *y, adc_ref_t mode, uint8_t max_samples);
void getRaw(uint16_t *vi, uint16_t *vj, adc_ref_t mode, uint8_t max_samples);
void setCalibration(uint16_t vi1, uint16_t vj1, uint16_t vi2, uint16_t vj2);
uint16_t _readLoop(uint8_t ctrl, uint8_t max_samples);
bool isTouching();
void powerDown();


/* FOR 10 offset
 * 
 * setCalibration(1863, 457, 263, 1650);
 * setCalibration(1890, 385, 240, 1632);
 * 
 **/

/*FOR 5 offset
 * (1919,336,210,1646)
 * setCalibration(1920, 340, 210, 1650);
 */


/*For 0 offset
 * setCalibration(1943, 320, 171, 1695);
 * setCalibration(1952, 325, 176, 1696);
 */
#endif	/* XPT2046_H */

/**********************************************************************/