/*
 * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
 * Copyright (c) 2014 Intel Corporation.
 *
 * Credits to Adafruit.
 * Based on Adafruit ST7735 library, see original license in license.txt file.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#pragma once

#include <string>
#include <mraa/aio.h>
#include <mraa/gpio.h>
#include <mraa/spi.h>
#include <gfx.h>

#define INITR_GREENTAB      0x0
#define INITR_REDTAB        0x1
#define INITR_BLACKTAB      0x2

#define ST7735_TFTWIDTH     128
#define ST7735_TFTHEIGHT    160

#define ST7735_NOP          0x00
#define ST7735_SWRESET      0x01
#define ST7735_RDDID        0x04
#define ST7735_RDDST        0x09

#define ST7735_SLPIN        0x10
#define ST7735_SLPOUT       0x11
#define ST7735_PTLON        0x12
#define ST7735_NORON        0x13

#define ST7735_INVOFF       0x20
#define ST7735_INVON        0x21
#define ST7735_DISPOFF      0x28
#define ST7735_DISPON       0x29
#define ST7735_CASET        0x2A
#define ST7735_RASET        0x2B
#define ST7735_RAMWR        0x2C
#define ST7735_RAMRD        0x2E

#define ST7735_PTLAR        0x30
#define ST7735_COLMOD       0x3A
#define ST7735_MADCTL       0x36

#define ST7735_FRMCTR1      0xB1
#define ST7735_FRMCTR2      0xB2
#define ST7735_FRMCTR3      0xB3
#define ST7735_INVCTR       0xB4
#define ST7735_DISSET5      0xB6

#define ST7735_PWCTR1       0xC0
#define ST7735_PWCTR2       0xC1
#define ST7735_PWCTR3       0xC2
#define ST7735_PWCTR4       0xC3
#define ST7735_PWCTR5       0xC4
#define ST7735_VMCTR1       0xC5

#define ST7735_RDID1        0xDA
#define ST7735_RDID2        0xDB
#define ST7735_RDID3        0xDC
#define ST7735_RDID4        0xDD

#define ST7735_PWCTR6       0xFC

#define ST7735_GMCTRP1      0xE0
#define ST7735_GMCTRN1      0xE1

// Color definitions
#define ST7735_BLACK        0x0000
#define ST7735_BLUE         0x001F
#define ST7735_RED          0xF800
#define ST7735_GREEN        0x07E0
#define ST7735_CYAN         0x07FF
#define ST7735_MAGENTA      0xF81F
#define ST7735_YELLOW       0xFFE0
#define ST7735_WHITE        0xFFFF

#define HIGH                1
#define LOW                 0

#define DELAY               0x80

namespace upm {

static const uint8_t Bcmd[] = {
    // Initialization commands for 7735B screens
      18,                     // 18 commands in list:
    ST7735_SWRESET,   DELAY,  //  1: Software reset, no args, w/delay
      50,                     //     50 ms delay
    ST7735_SLPOUT ,   DELAY,  //  2: Out of sleep mode, no args, w/delay
      255,                    //     255 = 500 ms delay
    ST7735_COLMOD , 1+DELAY,  //  3: Set color mode, 1 arg + delay:
      0x05,                   //     16-bit color
      10,                     //     10 ms delay
    ST7735_FRMCTR1, 3+DELAY,  //  4: Frame rate control, 3 args + delay:
      0x00,                   //     fastest refresh
      0x06,                   //     6 lines front porch
      0x03,                   //     3 lines back porch
      10,                     //     10 ms delay
    ST7735_MADCTL , 1      ,  //  5: Memory access ctrl (directions), 1 arg:
      0x08,                   //     Row addr/col addr, bottom to top refresh
    ST7735_DISSET5, 2      ,  //  6: Display settings #5, 2 args, no delay:
      0x15,                   //     1 clk cycle nonoverlap, 2 cycle gate
                              //     rise, 3 cycle osc equalize
      0x02,                   //     Fix on VTL
    ST7735_INVCTR , 1      ,  //  7: Display inversion control, 1 arg:
      0x0,                    //     Line inversion
    ST7735_PWCTR1 , 2+DELAY,  //  8: Power control, 2 args + delay:
      0x02,                   //     GVDD = 4.7V
      0x70,                   //     1.0uA
      10,                     //     10 ms delay
    ST7735_PWCTR2 , 1      ,  //  9: Power control, 1 arg, no delay:
      0x05,                   //     VGH = 14.7V, VGL = -7.35V
    ST7735_PWCTR3 , 2      ,  // 10: Power control, 2 args, no delay:
      0x01,                   //     Opamp current small
      0x02,                   //     Boost frequency
    ST7735_VMCTR1 , 2+DELAY,  // 11: Power control, 2 args + delay:
      0x3C,                   //     VCOMH = 4V
      0x38,                   //     VCOML = -1.1V
      10,                     //     10 ms delay
    ST7735_PWCTR6 , 2      ,  // 12: Power control, 2 args, no delay:
      0x11, 0x15,
    ST7735_GMCTRP1,16      ,  // 13: Magical unicorn dust, 16 args, no delay:
      0x09, 0x16, 0x09, 0x20, //     (seriously though, not sure what
      0x21, 0x1B, 0x13, 0x19, //      these config values represent)
      0x17, 0x15, 0x1E, 0x2B,
      0x04, 0x05, 0x02, 0x0E,
    ST7735_GMCTRN1,16+DELAY,  // 14: Sparkles and rainbows, 16 args + delay:
      0x0B, 0x14, 0x08, 0x1E, //     (ditto)
      0x22, 0x1D, 0x18, 0x1E,
      0x1B, 0x1A, 0x24, 0x2B,
      0x06, 0x06, 0x02, 0x0F,
      10,                     //     10 ms delay
    ST7735_CASET  , 4      ,  // 15: Column addr set, 4 args, no delay:
      0x00, 0x02,             //     XSTART = 2
      0x00, 0x81,             //     XEND = 129
    ST7735_RASET  , 4      ,  // 16: Row addr set, 4 args, no delay:
      0x00, 0x02,             //     XSTART = 1
      0x00, 0x81,             //     XEND = 160
    ST7735_NORON  ,   DELAY,  // 17: Normal display on, no args, w/delay
      10,                     //     10 ms delay
    ST7735_DISPON ,   DELAY,  // 18: Main screen turn on, no args, w/delay
      255 },                  //     255 = 500 ms delay

  Rcmd1[] = {                 // Init for 7735R, part 1 (red or green tab)
      15,                     // 15 commands in list:
    ST7735_SWRESET,   DELAY,  //  1: Software reset, 0 args, w/delay
      150,                    //     150 ms delay
    ST7735_SLPOUT ,   DELAY,  //  2: Out of sleep mode, 0 args, w/delay
      255,                    //     500 ms delay
    ST7735_FRMCTR1, 3      ,  //  3: Frame rate ctrl - normal mode, 3 args:
      0x01, 0x2C, 0x2D,       //     Rate = fosc/(1x2+40) * (LINE+2C+2D)
    ST7735_FRMCTR2, 3      ,  //  4: Frame rate control - idle mode, 3 args:
      0x01, 0x2C, 0x2D,       //     Rate = fosc/(1x2+40) * (LINE+2C+2D)
    ST7735_FRMCTR3, 6      ,  //  5: Frame rate ctrl - partial mode, 6 args:
      0x01, 0x2C, 0x2D,       //     Dot inversion mode
      0x01, 0x2C, 0x2D,       //     Line inversion mode
    ST7735_INVCTR , 1      ,  //  6: Display inversion ctrl, 1 arg, no delay:
      0x07,                   //     No inversion
    ST7735_PWCTR1 , 3      ,  //  7: Power control, 3 args, no delay:
      0xA2,
      0x02,                   //     -4.6V
      0x84,                   //     AUTO mode
    ST7735_PWCTR2 , 1      ,  //  8: Power control, 1 arg, no delay:
      0xC5,                   //     VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
    ST7735_PWCTR3 , 2      ,  //  9: Power control, 2 args, no delay:
      0x0A,                   //     Opamp current small
      0x00,                   //     Boost frequency
    ST7735_PWCTR4 , 2      ,  // 10: Power control, 2 args, no delay:
      0x8A,                   //     BCLK/2, Opamp current small & Medium low
      0x2A,
    ST7735_PWCTR5 , 2      ,  // 11: Power control, 2 args, no delay:
      0x8A, 0xEE,
    ST7735_VMCTR1 , 1      ,  // 12: Power control, 1 arg, no delay:
      0x0E,
    ST7735_INVOFF , 0      ,  // 13: Don't invert display, no args, no delay
    ST7735_MADCTL , 1      ,  // 14: Memory access control (directions), 1 arg:
      0xC8,                   //     row addr/col addr, bottom to top refresh
    ST7735_COLMOD , 1      ,  // 15: set color mode, 1 arg, no delay:
      0x05 },                 //     16-bit color

  Rcmd2green[] = {            // Init for 7735R, part 2 (green tab only)
      2,                      //  2 commands in list:
    ST7735_CASET  , 4      ,  //  1: Column addr set, 4 args, no delay:
      0x00, 0x02,             //     XSTART = 0
      0x00, 0x7F+0x02,        //     XEND = 127
    ST7735_RASET  , 4      ,  //  2: Row addr set, 4 args, no delay:
      0x00, 0x01,             //     XSTART = 0
      0x00, 0x9F+0x01 },      //     XEND = 159
  Rcmd2red[] = {              // Init for 7735R, part 2 (red tab only)
      2,                      //  2 commands in list:
    ST7735_CASET  , 4      ,  //  1: Column addr set, 4 args, no delay:
      0x00, 0x00,             //     XSTART = 0
      0x00, 0x7F,             //     XEND = 127
    ST7735_RASET  , 4      ,  //  2: Row addr set, 4 args, no delay:
      0x00, 0x00,             //     XSTART = 0
      0x00, 0x9F },           //     XEND = 159

  Rcmd3[] = {                 // Init for 7735R, part 3 (red or green tab)
      4,                      //  4 commands in list:
    ST7735_GMCTRP1, 16      , //  1: Magical unicorn dust, 16 args, no delay:
      0x02, 0x1c, 0x07, 0x12,
      0x37, 0x32, 0x29, 0x2d,
      0x29, 0x25, 0x2B, 0x39,
      0x00, 0x01, 0x03, 0x10,
    ST7735_GMCTRN1, 16      , //  2: Sparkles and rainbows, 16 args, no delay:
      0x03, 0x1d, 0x07, 0x06,
      0x2E, 0x2C, 0x29, 0x2D,
      0x2E, 0x2E, 0x37, 0x3F,
      0x00, 0x00, 0x02, 0x10,
    ST7735_NORON  ,    DELAY, //  3: Normal display on, no args, w/delay
      10,                     //     10 ms delay
    ST7735_DISPON ,    DELAY, //  4: Main screen turn on, no args w/delay
      100 };                  //     100 ms delay

#define swap(a, b) { int16_t t = a; a = b; b = t; }

const unsigned char font[] = {
    0x00, 0x00, 0x00, 0x00, 0x00,
    0x3E, 0x5B, 0x4F, 0x5B, 0x3E,
    0x3E, 0x6B, 0x4F, 0x6B, 0x3E,
    0x1C, 0x3E, 0x7C, 0x3E, 0x1C,
    0x18, 0x3C, 0x7E, 0x3C, 0x18,
    0x1C, 0x57, 0x7D, 0x57, 0x1C,
    0x1C, 0x5E, 0x7F, 0x5E, 0x1C,
    0x00, 0x18, 0x3C, 0x18, 0x00,
    0xFF, 0xE7, 0xC3, 0xE7, 0xFF,
    0x00, 0x18, 0x24, 0x18, 0x00,
    0xFF, 0xE7, 0xDB, 0xE7, 0xFF,
    0x30, 0x48, 0x3A, 0x06, 0x0E,
    0x26, 0x29, 0x79, 0x29, 0x26,
    0x40, 0x7F, 0x05, 0x05, 0x07,
    0x40, 0x7F, 0x05, 0x25, 0x3F,
    0x5A, 0x3C, 0xE7, 0x3C, 0x5A,
    0x7F, 0x3E, 0x1C, 0x1C, 0x08,
    0x08, 0x1C, 0x1C, 0x3E, 0x7F,
    0x14, 0x22, 0x7F, 0x22, 0x14,
    0x5F, 0x5F, 0x00, 0x5F, 0x5F,
    0x06, 0x09, 0x7F, 0x01, 0x7F,
    0x00, 0x66, 0x89, 0x95, 0x6A,
    0x60, 0x60, 0x60, 0x60, 0x60,
    0x94, 0xA2, 0xFF, 0xA2, 0x94,
    0x08, 0x04, 0x7E, 0x04, 0x08,
    0x10, 0x20, 0x7E, 0x20, 0x10,
    0x08, 0x08, 0x2A, 0x1C, 0x08,
    0x08, 0x1C, 0x2A, 0x08, 0x08,
    0x1E, 0x10, 0x10, 0x10, 0x10,
    0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
    0x30, 0x38, 0x3E, 0x38, 0x30,
    0x06, 0x0E, 0x3E, 0x0E, 0x06,
    0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x5F, 0x00, 0x00,
    0x00, 0x07, 0x00, 0x07, 0x00,
    0x14, 0x7F, 0x14, 0x7F, 0x14,
    0x24, 0x2A, 0x7F, 0x2A, 0x12,
    0x23, 0x13, 0x08, 0x64, 0x62,
    0x36, 0x49, 0x56, 0x20, 0x50,
    0x00, 0x08, 0x07, 0x03, 0x00,
    0x00, 0x1C, 0x22, 0x41, 0x00,
    0x00, 0x41, 0x22, 0x1C, 0x00,
    0x2A, 0x1C, 0x7F, 0x1C, 0x2A,
    0x08, 0x08, 0x3E, 0x08, 0x08,
    0x00, 0x80, 0x70, 0x30, 0x00,
    0x08, 0x08, 0x08, 0x08, 0x08,
    0x00, 0x00, 0x60, 0x60, 0x00,
    0x20, 0x10, 0x08, 0x04, 0x02,
    0x3E, 0x51, 0x49, 0x45, 0x3E,
    0x00, 0x42, 0x7F, 0x40, 0x00,
    0x72, 0x49, 0x49, 0x49, 0x46,
    0x21, 0x41, 0x49, 0x4D, 0x33,
    0x18, 0x14, 0x12, 0x7F, 0x10,
    0x27, 0x45, 0x45, 0x45, 0x39,
    0x3C, 0x4A, 0x49, 0x49, 0x31,
    0x41, 0x21, 0x11, 0x09, 0x07,
    0x36, 0x49, 0x49, 0x49, 0x36,
    0x46, 0x49, 0x49, 0x29, 0x1E,
    0x00, 0x00, 0x14, 0x00, 0x00,
    0x00, 0x40, 0x34, 0x00, 0x00,
    0x00, 0x08, 0x14, 0x22, 0x41,
    0x14, 0x14, 0x14, 0x14, 0x14,
    0x00, 0x41, 0x22, 0x14, 0x08,
    0x02, 0x01, 0x59, 0x09, 0x06,
    0x3E, 0x41, 0x5D, 0x59, 0x4E,
    0x7C, 0x12, 0x11, 0x12, 0x7C,
    0x7F, 0x49, 0x49, 0x49, 0x36,
    0x3E, 0x41, 0x41, 0x41, 0x22,
    0x7F, 0x41, 0x41, 0x41, 0x3E,
    0x7F, 0x49, 0x49, 0x49, 0x41,
    0x7F, 0x09, 0x09, 0x09, 0x01,
    0x3E, 0x41, 0x41, 0x51, 0x73,
    0x7F, 0x08, 0x08, 0x08, 0x7F,
    0x00, 0x41, 0x7F, 0x41, 0x00,
    0x20, 0x40, 0x41, 0x3F, 0x01,
    0x7F, 0x08, 0x14, 0x22, 0x41,
    0x7F, 0x40, 0x40, 0x40, 0x40,
    0x7F, 0x02, 0x1C, 0x02, 0x7F,
    0x7F, 0x04, 0x08, 0x10, 0x7F,
    0x3E, 0x41, 0x41, 0x41, 0x3E,
    0x7F, 0x09, 0x09, 0x09, 0x06,
    0x3E, 0x41, 0x51, 0x21, 0x5E,
    0x7F, 0x09, 0x19, 0x29, 0x46,
    0x26, 0x49, 0x49, 0x49, 0x32,
    0x03, 0x01, 0x7F, 0x01, 0x03,
    0x3F, 0x40, 0x40, 0x40, 0x3F,
    0x1F, 0x20, 0x40, 0x20, 0x1F,
    0x3F, 0x40, 0x38, 0x40, 0x3F,
    0x63, 0x14, 0x08, 0x14, 0x63,
    0x03, 0x04, 0x78, 0x04, 0x03,
    0x61, 0x59, 0x49, 0x4D, 0x43,
    0x00, 0x7F, 0x41, 0x41, 0x41,
    0x02, 0x04, 0x08, 0x10, 0x20,
    0x00, 0x41, 0x41, 0x41, 0x7F,
    0x04, 0x02, 0x01, 0x02, 0x04,
    0x40, 0x40, 0x40, 0x40, 0x40,
    0x00, 0x03, 0x07, 0x08, 0x00,
    0x20, 0x54, 0x54, 0x78, 0x40,
    0x7F, 0x28, 0x44, 0x44, 0x38,
    0x38, 0x44, 0x44, 0x44, 0x28,
    0x38, 0x44, 0x44, 0x28, 0x7F,
    0x38, 0x54, 0x54, 0x54, 0x18,
    0x00, 0x08, 0x7E, 0x09, 0x02,
    0x18, 0xA4, 0xA4, 0x9C, 0x78,
    0x7F, 0x08, 0x04, 0x04, 0x78,
    0x00, 0x44, 0x7D, 0x40, 0x00,
    0x20, 0x40, 0x40, 0x3D, 0x00,
    0x7F, 0x10, 0x28, 0x44, 0x00,
    0x00, 0x41, 0x7F, 0x40, 0x00,
    0x7C, 0x04, 0x78, 0x04, 0x78,
    0x7C, 0x08, 0x04, 0x04, 0x78,
    0x38, 0x44, 0x44, 0x44, 0x38,
    0xFC, 0x18, 0x24, 0x24, 0x18,
    0x18, 0x24, 0x24, 0x18, 0xFC,
    0x7C, 0x08, 0x04, 0x04, 0x08,
    0x48, 0x54, 0x54, 0x54, 0x24,
    0x04, 0x04, 0x3F, 0x44, 0x24,
    0x3C, 0x40, 0x40, 0x20, 0x7C,
    0x1C, 0x20, 0x40, 0x20, 0x1C,
    0x3C, 0x40, 0x30, 0x40, 0x3C,
    0x44, 0x28, 0x10, 0x28, 0x44,
    0x4C, 0x90, 0x90, 0x90, 0x7C,
    0x44, 0x64, 0x54, 0x4C, 0x44,
    0x00, 0x08, 0x36, 0x41, 0x00,
    0x00, 0x00, 0x77, 0x00, 0x00,
    0x00, 0x41, 0x36, 0x08, 0x00,
    0x02, 0x01, 0x02, 0x04, 0x02,
    0x3C, 0x26, 0x23, 0x26, 0x3C,
    0x1E, 0xA1, 0xA1, 0x61, 0x12,
    0x3A, 0x40, 0x40, 0x20, 0x7A,
    0x38, 0x54, 0x54, 0x55, 0x59,
    0x21, 0x55, 0x55, 0x79, 0x41,
    0x21, 0x54, 0x54, 0x78, 0x41,
    0x21, 0x55, 0x54, 0x78, 0x40,
    0x20, 0x54, 0x55, 0x79, 0x40,
    0x0C, 0x1E, 0x52, 0x72, 0x12,
    0x39, 0x55, 0x55, 0x55, 0x59,
    0x39, 0x54, 0x54, 0x54, 0x59,
    0x39, 0x55, 0x54, 0x54, 0x58,
    0x00, 0x00, 0x45, 0x7C, 0x41,
    0x00, 0x02, 0x45, 0x7D, 0x42,
    0x00, 0x01, 0x45, 0x7C, 0x40,
    0xF0, 0x29, 0x24, 0x29, 0xF0,
    0xF0, 0x28, 0x25, 0x28, 0xF0,
    0x7C, 0x54, 0x55, 0x45, 0x00,
    0x20, 0x54, 0x54, 0x7C, 0x54,
    0x7C, 0x0A, 0x09, 0x7F, 0x49,
    0x32, 0x49, 0x49, 0x49, 0x32,
    0x32, 0x48, 0x48, 0x48, 0x32,
    0x32, 0x4A, 0x48, 0x48, 0x30,
    0x3A, 0x41, 0x41, 0x21, 0x7A,
    0x3A, 0x42, 0x40, 0x20, 0x78,
    0x00, 0x9D, 0xA0, 0xA0, 0x7D,
    0x39, 0x44, 0x44, 0x44, 0x39,
    0x3D, 0x40, 0x40, 0x40, 0x3D,
    0x3C, 0x24, 0xFF, 0x24, 0x24,
    0x48, 0x7E, 0x49, 0x43, 0x66,
    0x2B, 0x2F, 0xFC, 0x2F, 0x2B,
    0xFF, 0x09, 0x29, 0xF6, 0x20,
    0xC0, 0x88, 0x7E, 0x09, 0x03,
    0x20, 0x54, 0x54, 0x79, 0x41,
    0x00, 0x00, 0x44, 0x7D, 0x41,
    0x30, 0x48, 0x48, 0x4A, 0x32,
    0x38, 0x40, 0x40, 0x22, 0x7A,
    0x00, 0x7A, 0x0A, 0x0A, 0x72,
    0x7D, 0x0D, 0x19, 0x31, 0x7D,
    0x26, 0x29, 0x29, 0x2F, 0x28,
    0x26, 0x29, 0x29, 0x29, 0x26,
    0x30, 0x48, 0x4D, 0x40, 0x20,
    0x38, 0x08, 0x08, 0x08, 0x08,
    0x08, 0x08, 0x08, 0x08, 0x38,
    0x2F, 0x10, 0xC8, 0xAC, 0xBA,
    0x2F, 0x10, 0x28, 0x34, 0xFA,
    0x00, 0x00, 0x7B, 0x00, 0x00,
    0x08, 0x14, 0x2A, 0x14, 0x22,
    0x22, 0x14, 0x2A, 0x14, 0x08,
    0xAA, 0x00, 0x55, 0x00, 0xAA,
    0xAA, 0x55, 0xAA, 0x55, 0xAA,
    0x00, 0x00, 0x00, 0xFF, 0x00,
    0x10, 0x10, 0x10, 0xFF, 0x00,
    0x14, 0x14, 0x14, 0xFF, 0x00,
    0x10, 0x10, 0xFF, 0x00, 0xFF,
    0x10, 0x10, 0xF0, 0x10, 0xF0,
    0x14, 0x14, 0x14, 0xFC, 0x00,
    0x14, 0x14, 0xF7, 0x00, 0xFF,
    0x00, 0x00, 0xFF, 0x00, 0xFF,
    0x14, 0x14, 0xF4, 0x04, 0xFC,
    0x14, 0x14, 0x17, 0x10, 0x1F,
    0x10, 0x10, 0x1F, 0x10, 0x1F,
    0x14, 0x14, 0x14, 0x1F, 0x00,
    0x10, 0x10, 0x10, 0xF0, 0x00,
    0x00, 0x00, 0x00, 0x1F, 0x10,
    0x10, 0x10, 0x10, 0x1F, 0x10,
    0x10, 0x10, 0x10, 0xF0, 0x10,
    0x00, 0x00, 0x00, 0xFF, 0x10,
    0x10, 0x10, 0x10, 0x10, 0x10,
    0x10, 0x10, 0x10, 0xFF, 0x10,
    0x00, 0x00, 0x00, 0xFF, 0x14,
    0x00, 0x00, 0xFF, 0x00, 0xFF,
    0x00, 0x00, 0x1F, 0x10, 0x17,
    0x00, 0x00, 0xFC, 0x04, 0xF4,
    0x14, 0x14, 0x17, 0x10, 0x17,
    0x14, 0x14, 0xF4, 0x04, 0xF4,
    0x00, 0x00, 0xFF, 0x00, 0xF7,
    0x14, 0x14, 0x14, 0x14, 0x14,
    0x14, 0x14, 0xF7, 0x00, 0xF7,
    0x14, 0x14, 0x14, 0x17, 0x14,
    0x10, 0x10, 0x1F, 0x10, 0x1F,
    0x14, 0x14, 0x14, 0xF4, 0x14,
    0x10, 0x10, 0xF0, 0x10, 0xF0,
    0x00, 0x00, 0x1F, 0x10, 0x1F,
    0x00, 0x00, 0x00, 0x1F, 0x14,
    0x00, 0x00, 0x00, 0xFC, 0x14,
    0x00, 0x00, 0xF0, 0x10, 0xF0,
    0x10, 0x10, 0xFF, 0x10, 0xFF,
    0x14, 0x14, 0x14, 0xFF, 0x14,
    0x10, 0x10, 0x10, 0x1F, 0x00,
    0x00, 0x00, 0x00, 0xF0, 0x10,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
    0xFF, 0xFF, 0xFF, 0x00, 0x00,
    0x00, 0x00, 0x00, 0xFF, 0xFF,
    0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
    0x38, 0x44, 0x44, 0x38, 0x44,
    0x7C, 0x2A, 0x2A, 0x3E, 0x14,
    0x7E, 0x02, 0x02, 0x06, 0x06,
    0x02, 0x7E, 0x02, 0x7E, 0x02,
    0x63, 0x55, 0x49, 0x41, 0x63,
    0x38, 0x44, 0x44, 0x3C, 0x04,
    0x40, 0x7E, 0x20, 0x1E, 0x20,
    0x06, 0x02, 0x7E, 0x02, 0x02,
    0x99, 0xA5, 0xE7, 0xA5, 0x99,
    0x1C, 0x2A, 0x49, 0x2A, 0x1C,
    0x4C, 0x72, 0x01, 0x72, 0x4C,
    0x30, 0x4A, 0x4D, 0x4D, 0x30,
    0x30, 0x48, 0x78, 0x48, 0x30,
    0xBC, 0x62, 0x5A, 0x46, 0x3D,
    0x3E, 0x49, 0x49, 0x49, 0x00,
    0x7E, 0x01, 0x01, 0x01, 0x7E,
    0x2A, 0x2A, 0x2A, 0x2A, 0x2A,
    0x44, 0x44, 0x5F, 0x44, 0x44,
    0x40, 0x51, 0x4A, 0x44, 0x40,
    0x40, 0x44, 0x4A, 0x51, 0x40,
    0x00, 0x00, 0xFF, 0x01, 0x03,
    0xE0, 0x80, 0xFF, 0x00, 0x00,
    0x08, 0x08, 0x6B, 0x6B, 0x08,
    0x36, 0x12, 0x36, 0x24, 0x36,
    0x06, 0x0F, 0x09, 0x0F, 0x06,
    0x00, 0x00, 0x18, 0x18, 0x00,
    0x00, 0x00, 0x10, 0x10, 0x00,
    0x30, 0x40, 0xFF, 0x01, 0x01,
    0x00, 0x1F, 0x01, 0x01, 0x1E,
    0x00, 0x19, 0x1D, 0x17, 0x12,
    0x00, 0x3C, 0x3C, 0x3C, 0x3C,
    0x00, 0x00, 0x00, 0x00, 0x00
};

/**
 * @brief C++ API for the st7735 lcd display library
 *
 *   This file defines the C++ interface for ST7735 display library
 *
 * @defgroup st7735 libupm-st7735
 * @ingroup adafruit spi display
 */
/**
 * @library st7735
 * @sensor st7735
 * @comname LCD display
 * @type display
 * @man adafruit
 * @web http://www.adafruit.com/product/358
 * @con spi
 *
 * @brief C++ API for the st7735 lcd display library
 * 
 *   This file defines the C++ interface for ST7735 display library
 *
 * @snippet st7735.cxx Interesting
 */
class ST7735 : public GFX {
    public:
        /**
         * Instanciates a ST7735 object
         *
         * @param csLCD LCD chip select pin
         * @param cSD SD card chip select pin
         * @param rs data/command pin
         * @param rst reset pin
         */
        ST7735 (uint8_t csLCD, uint8_t cSD, uint8_t rs, uint8_t rst);

        /**
         * ST7735 object destructor
         */
        ~ST7735 ();

        /**
         * Return name of the component
         */
        std::string name()
        {
            return m_name;
        }

        /**
         * Initialize the modules GPIOs
         */
        void initModule ();

        /**
         * Configure the chip via SPI interface
         */
        void configModule ();

        /**
         * Send command to SPI bus (rs must be LOW)
         *
         * @param value command number
         */
        void write (uint8_t value);

        /**
         * Send data to SPI bus (rs must be HIGH)
         *
         * @param value command number
         */
        void data (uint8_t value);

        /**
         * Execute set of commands and data
         *
         * @param addr pointer to start of the commands/data section
         */
        void executeCMDList (const uint8_t *addr);

        /**
         * Set the window size inside the screen where the pixels data
         * will be written.
         *
         * @param x0 first coordinate
         * @param y0 first coordinate
         * @param x1 second coordinate
         * @param y1 second coordinate
         */
        void setAddrWindow (uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1);

        /**
         * Send pixel collor (RGB) to the chip.
         *
         * @param x axis on horizontal scale
         * @param y axis on vertical scale
         * @param color rgb (16bit) color (R[0-4], G[5-10], B[11-15])
         */
        void drawPixel (int16_t x, int16_t y, uint16_t color);

        /**
         * Copy the buffer to the chip via SPI interface.
         */
        void refresh ();

        /**
         * LCD chip select LOW.
         */
        mraa_result_t lcdCSOn ();

        /**
         * LCD chip select HIGH.
         */
        mraa_result_t lcdCSOff ();

        /**
         * CD card chip select LOW.
         */
        mraa_result_t sdCSOn ();

        /**
         * CD card select HIGH.
         */
        mraa_result_t sdCSOff ();

        /**
         * Data select HIGH.
         */
        mraa_result_t rsHIGH ();

        /**
         * Data select LOW.
         */
        mraa_result_t rsLOW ();

        uint8_t m_map[160 * 128 * 2]; /**< Screens buffer */
    private:
        mraa_spi_context      m_spi;
        uint8_t              m_csLCD;
        uint8_t              m_cSD;
        uint8_t              m_rST;
        uint8_t              m_rS;

        mraa_gpio_context     m_csLCDPinCtx;
        mraa_gpio_context     m_cSDPinCtx;
        mraa_gpio_context     m_rSTPinCtx;
        mraa_gpio_context     m_rSPinCtx;

        uint8_t              m_spiBuffer[32];

        std::string          m_name;
};

}
