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/*
 * The Clear BSD License
 * Copyright (c) 2016, Freescale Semiconductor, Inc.
 * Copyright 2016-2017 NXP
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted (subject to the limitations in the disclaimer below) provided
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 *   of conditions and the following disclaimer.
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 * o Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
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 *   software without specific prior written permission.
 *
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 */

#ifndef _FSL_FT5406_H_
#define _FSL_FT5406_H_

#include "fsl_common.h"
#include "fsl_i2c.h"

/*!
 * @addtogroup ft5406
 * @{
 */

/*******************************************************************************
 * Definitions
 ******************************************************************************/

/*! @brief FT5406 I2C address. */
#define FT5406_I2C_ADDRESS (0x38)

/*! @brief FT5406 maximum number of simultaneously detected touches. */
#define FT5406_MAX_TOUCHES (5U)

/*! @brief FT5406 register address where touch data begin. */
#define FT5406_TOUCH_DATA_SUBADDR (1)

/*! @brief FT5406 raw touch data length. */
#define FT5406_TOUCH_DATA_LEN (0x20)

typedef enum _touch_event
{
    kTouch_Down = 0,    /*!< The state changed to touched. */
    kTouch_Up = 1,      /*!< The state changed to not touched. */
    kTouch_Contact = 2, /*!< There is a continuous touch being detected. */
    kTouch_Reserved = 3 /*!< No touch information available. */
} touch_event_t;

typedef struct _touch_point
{
    touch_event_t TOUCH_EVENT; /*!< Indicates the state or event of the touch point. */
    uint8_t TOUCH_ID; /*!< Id of the touch point. This numeric value stays constant between down and up event. */
    uint16_t TOUCH_X; /*!< X coordinate of the touch point */
    uint16_t TOUCH_Y; /*!< Y coordinate of the touch point */
} touch_point_t;

typedef struct _ft5406_handle
{
    I2C_Type *base;
    i2c_master_transfer_t xfer;
    uint8_t touch_buf[FT5406_TOUCH_DATA_LEN];
} ft5406_handle_t;

status_t FT5406_Init(ft5406_handle_t *handle, I2C_Type *base);

status_t FT5406_Denit(ft5406_handle_t *handle);

status_t FT5406_GetSingleTouch(ft5406_handle_t *handle, touch_event_t *touch_event, int *touch_x, int *touch_y);

status_t FT5406_GetMultiTouch(ft5406_handle_t *handle, int *touch_count, touch_point_t touch_array[FT5406_MAX_TOUCHES]);

#endif