/**
 * @file HX8357.h
 *
 * Roughly based on the Adafruit_HX8357_Library
 *
 * This library should work with:
 * Adafruit 3.5" TFT 320x480 + Touchscreen Breakout
 *    http://www.adafruit.com/products/2050
 *
 * Adafruit TFT FeatherWing - 3.5" 480x320 Touchscreen for Feathers 
 *    https://www.adafruit.com/product/3651
 *
 */

#ifndef HX8357_H
#define HX8357_H

#ifdef __cplusplus
extern "C" {
#endif

/*********************
 *      INCLUDES
 *********************/
#include <stdbool.h>
#include <stdint.h>

#include "lvgl/lvgl.h"

 /*********************
 *      DEFINES
 *********************/
#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
#define HX8357_DC   CONFIG_LVGL_DISP_PIN_DC
#define HX8357_RST  CONFIG_LVGL_DISP_PIN_RST
#define HX8357_BCKL CONFIG_LVGL_DISP_PIN_BCKL

#define HX8357_ENABLE_BACKLIGHT_CONTROL CONFIG_LVGL_ENABLE_BACKLIGHT_CONTROL

#if CONFIG_LVGL_BACKLIGHT_ACTIVE_LVL
  #define HX8357_BCKL_ACTIVE_LVL 1
#else
  #define HX8357_BCKL_ACTIVE_LVL 0
#endif

// if text/images are backwards, try setting this to 1
#define HX8357_INVERT_DISPLAY CONFIG_LVGL_INVERT_DISPLAY


/*******************
 * HX8357B/D REGS
*********************/
#define HX8357D                    0xD  ///< Our internal const for D type
#define HX8357B                    0xB  ///< Our internal const for B type

#define HX8357_TFTWIDTH            320  ///< 320 pixels wide
#define HX8357_TFTHEIGHT           480  ///< 480 pixels tall

#define HX8357_NOP                0x00  ///< No op
#define HX8357_SWRESET            0x01  ///< software reset
#define HX8357_RDDID              0x04  ///< Read ID
#define HX8357_RDDST              0x09  ///< (unknown)

#define HX8357_RDPOWMODE          0x0A  ///< Read power mode Read power mode
#define HX8357_RDMADCTL           0x0B  ///< Read MADCTL
#define HX8357_RDCOLMOD           0x0C  ///< Column entry mode
#define HX8357_RDDIM              0x0D  ///< Read display image mode
#define HX8357_RDDSDR             0x0F  ///< Read dosplay signal mode

#define HX8357_SLPIN              0x10  ///< Enter sleep mode
#define HX8357_SLPOUT             0x11  ///< Exit sleep mode
#define HX8357B_PTLON             0x12  ///< Partial mode on
#define HX8357B_NORON             0x13  ///< Normal mode

#define HX8357_INVOFF             0x20  ///< Turn off invert
#define HX8357_INVON              0x21  ///< Turn on invert
#define HX8357_DISPOFF            0x28  ///< Display on
#define HX8357_DISPON             0x29  ///< Display off

#define HX8357_CASET              0x2A  ///< Column addr set
#define HX8357_PASET              0x2B  ///< Page addr set
#define HX8357_RAMWR              0x2C  ///< Write VRAM
#define HX8357_RAMRD              0x2E  ///< Read VRAm

#define HX8357B_PTLAR             0x30  ///< (unknown)
#define HX8357_TEON               0x35  ///< Tear enable on
#define HX8357_TEARLINE           0x44  ///< (unknown)
#define HX8357_MADCTL             0x36  ///< Memory access control
#define HX8357_COLMOD             0x3A  ///< Color mode

#define HX8357_SETOSC             0xB0  ///< Set oscillator
#define HX8357_SETPWR1            0xB1  ///< Set power control
#define HX8357B_SETDISPLAY        0xB2  ///< Set display mode
#define HX8357_SETRGB             0xB3  ///< Set RGB interface
#define HX8357D_SETCOM            0xB6  ///< Set VCOM voltage

#define HX8357B_SETDISPMODE       0xB4  ///< Set display mode
#define HX8357D_SETCYC            0xB4  ///< Set display cycle reg
#define HX8357B_SETOTP            0xB7  ///< Set OTP memory
#define HX8357D_SETC              0xB9  ///< Enable extension command

#define HX8357B_SET_PANEL_DRIVING 0xC0  ///< Set panel drive mode
#define HX8357D_SETSTBA           0xC0  ///< Set source option
#define HX8357B_SETDGC            0xC1  ///< Set DGC settings
#define HX8357B_SETID             0xC3  ///< Set ID
#define HX8357B_SETDDB            0xC4  ///< Set DDB
#define HX8357B_SETDISPLAYFRAME   0xC5  ///< Set display frame
#define HX8357B_GAMMASET          0xC8  ///< Set Gamma correction
#define HX8357B_SETCABC           0xC9  ///< Set CABC
#define HX8357_SETPANEL           0xCC  ///< Set Panel

#define HX8357B_SETPOWER          0xD0  ///< Set power control
#define HX8357B_SETVCOM           0xD1  ///< Set VCOM
#define HX8357B_SETPWRNORMAL      0xD2  ///< Set power normal

#define HX8357B_RDID1             0xDA  ///< Read ID #1
#define HX8357B_RDID2             0xDB  ///< Read ID #2
#define HX8357B_RDID3             0xDC  ///< Read ID #3
#define HX8357B_RDID4             0xDD  ///< Read ID #4

#define HX8357D_SETGAMMA          0xE0  ///< Set Gamma

#define HX8357B_SETGAMMA          0xC8 ///< Set Gamma
#define HX8357B_SETPANELRELATED   0xE9 ///< Set panel related

 /**********************
 *      TYPEDEFS
 **********************/

/**********************
 * GLOBAL PROTOTYPES
 **********************/

void hx8357_init(uint8_t displayType);
void hx8357_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map);
void hx8357_enable_backlight(bool backlight);
void hx8357_set_rotation(uint8_t r);

/**********************
 *      MACROS
 **********************/

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /*HX8357_H*/