text: /*
   * 
   * HIGH SPEED LOW LEVEL DISPLAY FUNCTIONS USING DIRECT TRANSFER MODE
   *
  */
  
  #ifndef _TFTSPI_H_
  #define _TFTSPI_H_
  
  #include "tftspi.h"
  #include "spi_master_lobo.h"
  #include "sdkconfig.h"
  #include "stmpe610.h"
  #include "driver/gpio.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #define TOUCH_TYPE_NONE		0
  #define TOUCH_TYPE_XPT2046	1
  #define TOUCH_TYPE_STMPE610	2
  
  #define TP_CALX_XPT2046		7472920
  #define TP_CALY_XPT2046		122224794
  
  #define TP_CALX_STMPE610	21368532
  #define TP_CALY_STMPE610	11800144
  
  // === Screen orientation constants ===
  #define PORTRAIT	0
  #define LANDSCAPE	1
  #define PORTRAIT_FLIP	2
  #define LANDSCAPE_FLIP	3
  
  #define DISP_TYPE_ILI9341	0
  #define DISP_TYPE_ILI9488	1
  #define DISP_TYPE_ST7789V	2
  #define DISP_TYPE_ST7735	3
  #define DISP_TYPE_ST7735R	4
  #define DISP_TYPE_ST7735B	5
  #define DISP_TYPE_ST7735G	6
  #define DISP_TYPE_ST7735S	7
  #define DISP_TYPE_MAX		8
  
  #define CONFIG_EXAMPLE_DISPLAY_TYPE 4
  
  #if CONFIG_EXAMPLE_DISPLAY_TYPE == 1
  
  // ** Set the correct configuration for ESP32-WROVER-KIT v3
  // --------------------------------------------------------
  #define DEFAULT_DISP_TYPE           DISP_TYPE_ST7789V
  #define DEFAULT_TFT_DISPLAY_WIDTH   240
  #define DEFAULT_TFT_DISPLAY_HEIGHT  320
  #define DISP_COLOR_BITS_24          0x66
  #define DEFAULT_GAMMA_CURVE         0
  #define DEFAULT_SPI_CLOCK           26000000
  #define TFT_INVERT_ROTATION         0
  #define TFT_INVERT_ROTATION1        1
  #define TFT_RGB_BGR                 0x00
  
  #define USE_TOUCH	TOUCH_TYPE_NONE
  
  #define PIN_NUM_MISO 25		// SPI MISO
  #define PIN_NUM_MOSI 23		// SPI MOSI
  #define PIN_NUM_CLK  19		// SPI CLOCK pin
  #define PIN_NUM_CS   22		// Display CS pin
  #define PIN_NUM_DC   21		// Display command/data pin
  #define PIN_NUM_TCS   0		// Touch screen CS pin
  
  #define PIN_NUM_RST  18  	// GPIO used for RESET control
  #define PIN_NUM_BCKL  5     // GPIO used for backlight control
  #define PIN_BCKL_ON   0     // GPIO value for backlight ON
  #define PIN_BCKL_OFF  1     // GPIO value for backlight OFF
  // --------------------------------------------------------
  
  #elif CONFIG_EXAMPLE_DISPLAY_TYPE == 2
  
  // ** Set the correct configuration for Adafruit TFT Feather
  // ---------------------------------------------------------
  #define DEFAULT_DISP_TYPE   DISP_TYPE_ILI9341
  #define DEFAULT_TFT_DISPLAY_WIDTH   240
  #define DEFAULT_TFT_DISPLAY_HEIGHT  320
  #define DISP_COLOR_BITS_24          0x66
  #define DEFAULT_GAMMA_CURVE         0
  #define DEFAULT_SPI_CLOCK           26000000
  #define TFT_INVERT_ROTATION         0
  #define TFT_INVERT_ROTATION1        0
  #define TFT_RGB_BGR                 0x08
  
  #define USE_TOUCH                   TOUCH_TYPE_STMPE610
  
  #define PIN_NUM_MISO 19		// SPI MISO
  #define PIN_NUM_MOSI 18		// SPI MOSI
  #define PIN_NUM_CLK  5		// SPI CLOCK pin
  #define PIN_NUM_CS   15		// Display CS pin
  #define PIN_NUM_DC   33		// Display command/data pin
  #define PIN_NUM_TCS  32		// Touch screen CS pin (NOT used if USE_TOUCH=0)
  
  #define PIN_NUM_RST  0  	// GPIO used for RESET control (#16)
  #define PIN_NUM_BCKL 0  	// GPIO used for backlight control
  #define PIN_BCKL_ON  0  	// GPIO value for backlight ON
  #define PIN_BCKL_OFF 1  	// GPIO value for backlight OFF
  // ---------------------------------------------------------
  
  #elif CONFIG_EXAMPLE_DISPLAY_TYPE == 3
  
  // ** Set the correct configuration for M5Stack TFT
  // ---------------------------------------------------------
  #define DEFAULT_DISP_TYPE   DISP_TYPE_ILI9341
  #define DEFAULT_TFT_DISPLAY_WIDTH   320
  #define DEFAULT_TFT_DISPLAY_HEIGHT  240
  #define DISP_COLOR_BITS_24          0x66
  #define DEFAULT_GAMMA_CURVE         0
  #define DEFAULT_SPI_CLOCK           26000000
  #define TFT_INVERT_ROTATION         0
  #define TFT_INVERT_ROTATION1        1
  #define TFT_INVERT_ROTATION2        0
  #define TFT_RGB_BGR                 0x08
  
  #define USE_TOUCH                   TOUCH_TYPE_NONE
  
  #define PIN_NUM_MISO 19		// SPI MISO
  #define PIN_NUM_MOSI 23		// SPI MOSI
  #define PIN_NUM_CLK  18		// SPI CLOCK pin
  #define PIN_NUM_CS   14		// Display CS pin
  #define PIN_NUM_DC   27		// Display command/data pin
  #define PIN_NUM_TCS  0		// Touch screen CS pin (NOT used if USE_TOUCH=0)
  
  #define PIN_NUM_RST  33  	// GPIO used for RESET control (#16)
  #define PIN_NUM_BCKL 32  	// GPIO used for backlight control
  #define PIN_BCKL_ON  1  	// GPIO value for backlight ON
  #define PIN_BCKL_OFF 0  	// GPIO value for backlight OFF
  // ---------------------------------------------------------
  
  #elif CONFIG_EXAMPLE_DISPLAY_TYPE == 4
  
  // ** Set the correct configuration for M5StickC TFT
  // ---------------------------------------------------------
  #define DEFAULT_DISP_TYPE DISP_TYPE_ST7735S
  #define DEFAULT_TFT_DISPLAY_WIDTH   80
  #define DEFAULT_TFT_DISPLAY_HEIGHT  160
  #define DISP_COLOR_BITS_24          0x66
  #define DEFAULT_GAMMA_CURVE         0
  #define DEFAULT_SPI_CLOCK           26000000
  #define TFT_INVERT_ROTATION         0
  #define TFT_INVERT_ROTATION1        1
  #define TFT_INVERT_ROTATION2        1
  #define TFT_RGB_BGR                 0x08
  
  #define USE_TOUCH                   TOUCH_TYPE_NONE
  
  #define PIN_NUM_MISO -1		// SPI MISO
  #define PIN_NUM_MOSI 15		// SPI MOSI
  #define PIN_NUM_CLK  13		// SPI CLOCK pin
  #define PIN_NUM_CS   5		// Display CS pin
  #define PIN_NUM_DC   23		// Display command/data pin
  #define PIN_NUM_TCS  0		// Touch screen CS pin (NOT used if USE_TOUCH=0)
  
  #define PIN_NUM_RST  18  	// GPIO used for RESET control (#16)
  #define PIN_NUM_BCKL 0  	// GPIO used for backlight control
  #define PIN_BCKL_ON  1  	// GPIO value for backlight ON
  #define PIN_BCKL_OFF 0  	// GPIO value for backlight OFF
  
  #else
  
  // Configuration for other boards, set the correct values for the display used
  //----------------------------------------------------------------------------
  #define DISP_COLOR_BITS_24	0x66
  //#define DISP_COLOR_BITS_16	0x55  // Do not use!
  
  // #############################################
  // ### Set to 1 for some displays,           ###
  //     for example the one on ESP-WROWER-KIT ###
  // #############################################
  #define TFT_INVERT_ROTATION 0
  #define TFT_INVERT_ROTATION1 0
  
  // ################################################
  // ### SET TO 0X00 FOR DISPLAYS WITH RGB MATRIX ###
  // ### SET TO 0X08 FOR DISPLAYS WITH BGR MATRIX ###
  // ### For ESP-WROWER-KIT set to 0x00           ###
  // ################################################
  #define TFT_RGB_BGR 0x08
  
  // ##############################################################
  // ### Define ESP32 SPI pins to which the display is attached ###
  // ##############################################################
  
  // The pins configured here are the native spi pins for HSPI interface
  // Any other valid pin combination can be used
  #define PIN_NUM_MISO 19		// SPI MISO
  #define PIN_NUM_MOSI 23		// SPI MOSI
  #define PIN_NUM_CLK  18		// SPI CLOCK pin
  #define PIN_NUM_CS   14		// Display CS pin
  #define PIN_NUM_DC   27		// Display command/data pin
  #define PIN_NUM_TCS  25		// Touch screen CS pin (NOT used if USE_TOUCH=0)
  
  // --------------------------------------------------------------
  // ** Set Reset and Backlight pins to 0 if not used !
  // ** If you want to use them, set them to some valid GPIO number
  #define PIN_NUM_RST  33  	// GPIO used for RESET control
  
  #define PIN_NUM_BCKL 32  	// GPIO used for backlight control
  #define PIN_BCKL_ON  0  	// GPIO value for backlight ON
  #define PIN_BCKL_OFF 1  	// GPIO value for backlight OFF
  // --------------------------------------------------------------
  
  // #######################################################
  // Set this to 1 if you want to use touch screen functions
  // #######################################################
  #define USE_TOUCH	TOUCH_TYPE_NONE
  // #######################################################
  
  // #######################################################################
  // Default display width (smaller dimension) and height (larger dimension)
  // #######################################################################
  #define DEFAULT_TFT_DISPLAY_WIDTH  240
  #define DEFAULT_TFT_DISPLAY_HEIGHT 320
  // #######################################################################
  
  #define DEFAULT_GAMMA_CURVE 0
  #define DEFAULT_SPI_CLOCK   26000000
  #define DEFAULT_DISP_TYPE   DISP_TYPE_ILI9341
  //----------------------------------------------------------------------------
  
  #endif  // CONFIG_EXAMPLE_ESP_WROVER_KIT
  
  
  // ##############################################################
  // #### Global variables                                     ####
  // ##############################################################
  
  // ==== Converts colors to grayscale if 1 =======================
  extern uint8_t gray_scale;
  
  // ==== Spi clock for reading data from display memory in Hz ====
  extern uint32_t max_rdclock;
  
  // ==== Display dimensions in pixels ============================
  extern int _width;
  extern int _height;
  
  // ==== Display type, DISP_TYPE_ILI9488 or DISP_TYPE_ILI9341 ====
  extern uint8_t tft_disp_type;
  
  // ==== Spi device handles for display and touch screen =========
  extern spi_lobo_device_handle_t disp_spi;
  extern spi_lobo_device_handle_t ts_spi;
  
  // ##############################################################
  
  // 24-bit color type structure
  typedef struct __attribute__((__packed__)) {
  //typedef struct {
  	uint8_t r;
  	uint8_t g;
  	uint8_t b;
  } color_t ;
  
  // ==== Display commands constants ====
  #define TFT_INVOFF     0x20
  #define TFT_INVONN     0x21
  #define TFT_DISPOFF    0x28
  #define TFT_DISPON     0x29
  #define TFT_MADCTL	   0x36
  #define TFT_PTLAR 	   0x30
  #define TFT_ENTRYM 	   0xB7
  
  #define TFT_CMD_NOP			0x00
  #define TFT_CMD_SWRESET		0x01
  #define TFT_CMD_RDDID		0x04
  #define TFT_CMD_RDDST		0x09
  
  #define TFT_CMD_SLPIN		0x10
  #define TFT_CMD_SLPOUT		0x11
  #define TFT_CMD_PTLON		0x12
  #define TFT_CMD_NORON		0x13
  
  #define TFT_CMD_RDMODE		0x0A
  #define TFT_CMD_RDMADCTL	0x0B
  #define TFT_CMD_RDPIXFMT	0x0C
  #define TFT_CMD_RDIMGFMT	0x0D
  #define TFT_CMD_RDSELFDIAG  0x0F
  
  #define TFT_CMD_GAMMASET	0x26
  
  #define TFT_CMD_FRMCTR1		0xB1
  #define TFT_CMD_FRMCTR2		0xB2
  #define TFT_CMD_FRMCTR3		0xB3
  #define TFT_CMD_INVCTR		0xB4
  #define TFT_CMD_DFUNCTR		0xB6
  
  #define TFT_CMD_PWCTR1		0xC0
  #define TFT_CMD_PWCTR2		0xC1
  #define TFT_CMD_PWCTR3		0xC2
  #define TFT_CMD_PWCTR4		0xC3
  #define TFT_CMD_PWCTR5		0xC4
  #define TFT_CMD_VMCTR1		0xC5
  #define TFT_CMD_VMCTR2		0xC7
  
  #define TFT_CMD_RDID1		0xDA
  #define TFT_CMD_RDID2		0xDB
  #define TFT_CMD_RDID3		0xDC
  #define TFT_CMD_RDID4		0xDD
  
  #define TFT_CMD_GMCTRP1		0xE0
  #define TFT_CMD_GMCTRN1		0xE1
  
  #define TFT_CMD_POWERA		0xCB
  #define TFT_CMD_POWERB		0xCF
  #define TFT_CMD_POWER_SEQ	0xED
  #define TFT_CMD_DTCA		0xE8
  #define TFT_CMD_DTCB		0xEA
  #define TFT_CMD_PRC			0xF7
  #define TFT_CMD_3GAMMA_EN	0xF2
  
  #define ST_CMD_VCOMS       0xBB
  #define ST_CMD_FRCTRL2      0xC6
  #define ST_CMD_PWCTR1		0xD0
  
  #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_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_PWCTR6  0xFC
  #define ST7735_GMCTRP1 0xE0
  #define ST7735_GMCTRN1 0xE1
  
  #define MADCTL_MY  0x80
  #define MADCTL_MX  0x40
  #define MADCTL_MV  0x20
  #define MADCTL_ML  0x10
  #define MADCTL_MH  0x04
  
  #define TFT_CASET		0x2A
  #define TFT_PASET		0x2B
  #define TFT_RAMWR		0x2C
  #define TFT_RAMRD		0x2E
  #define TFT_CMD_PIXFMT	0x3A
  
  #define TFT_CMD_DELAY	0x80
  
  
  // Initialization sequence for ILI7749
  // ====================================
  static const uint8_t ST7789V_init[] = {
  #if PIN_NUM_RST
    15,                   					        // 15 commands in list
  #else
    16,                   					        // 16 commands in list
    TFT_CMD_SWRESET, TFT_CMD_DELAY,					//  1: Software reset, no args, w/delay
    200,												//     200 ms delay
  #endif
    TFT_CMD_FRMCTR2, 5, 0x0c, 0x0c, 0x00, 0x33, 0x33,
    TFT_ENTRYM, 1, 0x45,
    ST_CMD_VCOMS, 1, 0x2B,
    TFT_CMD_PWCTR1, 1, 0x2C,
    TFT_CMD_PWCTR3, 2, 0x01, 0xff,
    TFT_CMD_PWCTR4, 1, 0x11,
    TFT_CMD_PWCTR5, 1, 0x20,
    ST_CMD_FRCTRL2, 1, 0x0f,
    ST_CMD_PWCTR1, 2, 0xA4, 0xA1,
    TFT_CMD_GMCTRP1, 14, 0xD0, 0x00, 0x05, 0x0E, 0x15, 0x0D, 0x37, 0x43, 0x47, 0x09, 0x15, 0x12, 0x16, 0x19,
    TFT_CMD_GMCTRN1, 14, 0xD0, 0x00, 0x05, 0x0D, 0x0C, 0x06, 0x2D, 0x44, 0x40, 0x0E, 0x1C, 0x18, 0x16, 0x19,
    TFT_MADCTL, 1, (MADCTL_MX | TFT_RGB_BGR),			// Memory Access Control (orientation)
    TFT_CMD_PIXFMT, 1, DISP_COLOR_BITS_24,            // *** INTERFACE PIXEL FORMAT: 0x66 -> 18 bit; 0x55 -> 16 bit
    TFT_CMD_SLPOUT, TFT_CMD_DELAY, 120,				//  Sleep out,	//  120 ms delay
    TFT_DISPON, TFT_CMD_DELAY, 120,
  };
  
  // Initialization sequence for ILI7341
  // ====================================
  static const uint8_t ILI9341_init[] = {
  #if PIN_NUM_RST
    23,                   					        // 24 commands in list
  #else
    24,                   					        // 24 commands in list
    TFT_CMD_SWRESET, TFT_CMD_DELAY,					//  1: Software reset, no args, w/delay
    250,												//     200 ms delay
  #endif
    TFT_CMD_POWERA, 5, 0x39, 0x2C, 0x00, 0x34, 0x02,
    TFT_CMD_POWERB, 3, 0x00, 0XC1, 0X30,
    0xEF, 3, 0x03, 0x80, 0x02,
    TFT_CMD_DTCA, 3, 0x85, 0x00, 0x78,
    TFT_CMD_DTCB, 2, 0x00, 0x00,
    TFT_CMD_POWER_SEQ, 4, 0x64, 0x03, 0X12, 0X81,
    TFT_CMD_PRC, 1, 0x20,
    TFT_CMD_PWCTR1, 1, 0x23,							//Power control VRH[5:0]
    TFT_CMD_PWCTR2, 1, 0x10,							//Power control SAP[2:0];BT[3:0]
    TFT_CMD_VMCTR1, 2, 0x3e, 0x28,					//VCM control
    TFT_CMD_VMCTR2, 1, 0x86,							//VCM control2
    TFT_MADCTL, 1,									// Memory Access Control (orientation)
    (MADCTL_MX | TFT_RGB_BGR),
    // *** INTERFACE PIXEL FORMAT: 0x66 -> 18 bit; 0x55 -> 16 bit
    TFT_CMD_PIXFMT, 1, DISP_COLOR_BITS_24,
    TFT_INVOFF, 0,
    TFT_CMD_FRMCTR1, 2, 0x00, 0x18,
    TFT_CMD_DFUNCTR, 4, 0x08, 0x82, 0x27, 0x00,		// Display Function Control
    TFT_PTLAR, 4, 0x00, 0x00, 0x01, 0x3F,
    TFT_CMD_3GAMMA_EN, 1, 0x00,						// 3Gamma Function: Disable (0x02), Enable (0x03)
    TFT_CMD_GAMMASET, 1, 0x01,						//Gamma curve selected (0x01, 0x02, 0x04, 0x08)
    TFT_CMD_GMCTRP1, 15,   							//Positive Gamma Correction
    0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00,
    TFT_CMD_GMCTRN1, 15,   							//Negative Gamma Correction
    0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F,
    TFT_CMD_SLPOUT, TFT_CMD_DELAY,					//  Sleep out
    200,			 									//  120 ms delay
    TFT_DISPON, TFT_CMD_DELAY, 200,
  };
  
  // Initialization sequence for ILI9488
  // ====================================
  static const uint8_t ILI9488_init[] = {
  #if PIN_NUM_RST
    17,                   					        // 17 commands in list
  #else
    18,                   					        // 18 commands in list
    TFT_CMD_SWRESET, TFT_CMD_DELAY,					//  1: Software reset, no args, w/delay
    200,												//     200 ms delay
  #endif
    0xE0, 15, 0x00, 0x03, 0x09, 0x08, 0x16, 0x0A, 0x3F, 0x78, 0x4C, 0x09, 0x0A, 0x08, 0x16, 0x1A, 0x0F,
    0xE1, 15,	0x00, 0x16, 0x19, 0x03, 0x0F, 0x05, 0x32, 0x45, 0x46, 0x04, 0x0E, 0x0D, 0x35, 0x37, 0x0F,
    0xC0, 2,   //Power Control 1
  	0x17,    //Vreg1out
  	0x15,    //Verg2out
  
    0xC1, 1,   //Power Control 2
  	0x41,    //VGH,VGL
  
    0xC5, 3,   //Power Control 3
  	0x00,
  	0x12,    //Vcom
  	0x80,
  
  #if TFT_INVERT_ROTATION
    TFT_MADCTL, 1, (MADCTL_MV | TFT_RGB_BGR),			// Memory Access Control (orientation), set to portrait
  #else
    TFT_MADCTL, 1, (MADCTL_MX | TFT_RGB_BGR),			// Memory Access Control (orientation), set to portrait
  #endif
  
    // *** INTERFACE PIXEL FORMAT: 0x66 -> 18 bit;
    TFT_CMD_PIXFMT, 1, DISP_COLOR_BITS_24,
  
    0xB0, 1,   // Interface Mode Control
  	0x00,    // 0x80: SDO NOT USE; 0x00 USE SDO
  
    0xB1, 1,   //Frame rate
  	0xA0,    //60Hz
  
    0xB4, 1,   //Display Inversion Control
  	0x02,    //2-dot
  
    0xB6, 2,   //Display Function Control  RGB/MCU Interface Control
  	0x02,    //MCU
  	0x02,    //Source,Gate scan direction
  
    0xE9, 1,   // Set Image Function
  	0x00,    // Disable 24 bit data
  
    0x53, 1,   // Write CTRL Display Value
  	0x28,    // BCTRL && DD on
  
    0x51, 1,   // Write Display Brightness Value
  	0x7F,    //
  
    0xF7, 4,   // Adjust Control
  	0xA9,
  	0x51,
  	0x2C,
  	0x02,    // D7 stream, loose
  
  
    0x11, TFT_CMD_DELAY,  //Exit Sleep
      120,
    0x29, 0,      //Display on
  
  };
  
  
  // Initialization commands for 7735B screens
  // ------------------------------------
  static const uint8_t STP7735_init[] = {
  #if PIN_NUM_RST
    16,                       // 17 commands in list
  #else
    17,						// 18 commands in list:
    ST7735_SLPOUT,   TFT_CMD_DELAY,	//  2: Out of sleep mode, no args, w/delay
    255,			           			//     255 = 500 ms delay
  #endif
    TFT_CMD_PIXFMT, 1+TFT_CMD_DELAY,	//  3: Set color mode, 1 arg + delay:
    0x06, 							//     18-bit color 6-6-6 color format
    10,	          					//     10 ms delay
    ST7735_FRMCTR1, 3+TFT_CMD_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
    TFT_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+TFT_CMD_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+TFT_CMD_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+TFT_CMD_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
    TFT_CASET  , 4      , 	// 15: Column addr set, 4 args, no delay:
    0x00, 0x02,				//     XSTART = 2
    0x00, 0x81,				//     XEND = 129
    TFT_PASET  , 4      , 	// 16: Row addr set, 4 args, no delay:
    0x00, 0x02,				//     XSTART = 1
    0x00, 0x81,				//     XEND = 160
    ST7735_NORON  ,   TFT_CMD_DELAY,	// 17: Normal display on, no args, w/delay
    10,						//     10 ms delay
    TFT_DISPON ,   TFT_CMD_DELAY,  	// 18: Main screen turn on, no args, w/delay
    255						//     255 = 500 ms delay
  };
  
  
  // Init for 7735R, part 1 (red or green tab)
  // --------------------------------------
  static const uint8_t  STP7735R_init[] = {
  // #if PIN_NUM_RST
  //   14,                       // 14 commands in list
  // #else
    15,						// 15 commands in list:
    ST7735_SWRESET,   TFT_CMD_DELAY,	//  1: Software reset, 0 args, w/delay
    150,						//     150 ms delay
  // #endif
    ST7735_SLPOUT ,   TFT_CMD_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,
    #if (DEFAULT_DISP_TYPE == DISP_TYPE_ST7735S)
    TFT_INVONN , 0      ,		// 13: Don't invert display, no args, no delay
    #else
    TFT_INVOFF , 0      ,		// 13: Don't invert display, no args, no delay
    #endif
    TFT_MADCTL , 1      ,		// 14: Memory access control (directions), 1 arg:
    0xC8,						//     row addr/col addr, bottom to top refresh, RGB order
    TFT_CMD_PIXFMT , 1+TFT_CMD_DELAY,	//  15: Set color mode, 1 arg + delay:
    0x06,								//      18-bit color 6-6-6 color format
    10						//     10 ms delay
  };
  
  // Init for 7735R, part 2 (green tab only)
  // ---------------------------------------
  static const uint8_t Rcmd2green[] = {
    2,						//  2 commands in list:
    TFT_CASET  , 4      ,		//  1: Column addr set, 4 args, no delay:
    0x00, 0x02,				//     XSTART = 0
    0x00, 0x7F+0x02,			//     XEND = 129
    TFT_PASET  , 4      ,	    //  2: Row addr set, 4 args, no delay:
    0x00, 0x01,				//     XSTART = 0
    0x00, 0x9F+0x01			//     XEND = 160
  };
  
  // Init for 7735R, part 2 (red tab only)
  // -------------------------------------
  static const uint8_t Rcmd2red[] = {
    2,						//  2 commands in list:
    TFT_CASET  , 4      ,	    //  1: Column addr set, 4 args, no delay:
    0x00, 0x00,				//     XSTART = 0
    0x00, 0x7F,				//     XEND = 127
    TFT_PASET  , 4      ,	    //  2: Row addr set, 4 args, no delay:
    0x00, 0x00,				//     XSTART = 0
    0x00, 0x9F				//     XEND = 159
  };
  
  // Init for 7735R, part 3 (red or green tab)
  // -----------------------------------------
  static const uint8_t Rcmd3[] = {
    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  ,    TFT_CMD_DELAY,	//  3: Normal display on, no args, w/delay
    10,						//     10 ms delay
    TFT_DISPON ,    TFT_CMD_DELAY,	//  4: Main screen turn on, no args w/delay
    100						//     100 ms delay
  };
  
  // ==== Public functions =========================================================
  
  // == Low level functions; usually not used directly ==
  esp_err_t wait_trans_finish(uint8_t free_line);
  void disp_spi_transfer_cmd(int8_t cmd);
  void disp_spi_transfer_cmd_data(int8_t cmd, uint8_t *data, uint32_t len);
  void drawPixel(int16_t x, int16_t y, color_t color, uint8_t sel);
  void send_data(int x1, int y1, int x2, int y2, uint32_t len, color_t *buf);
  void TFT_pushColorRep(int x1, int y1, int x2, int y2, color_t data, uint32_t len);
  int read_data(int x1, int y1, int x2, int y2, int len, uint8_t *buf, uint8_t set_sp);
  color_t readPixel(int16_t x, int16_t y);
  int touch_get_data(uint8_t type);
  
  
  // Deactivate display's CS line
  //========================
  esp_err_t disp_deselect();
  
  // Activate display's CS line and configure SPI interface if necessary
  //======================
  esp_err_t disp_select();
  
  
  // Find maximum spi clock for successful read from display RAM
  // ** Must be used AFTER the display is initialized **
  //======================
  uint32_t find_rd_speed();
  
  
  // Change the screen rotation.
  // Input: m new rotation value (0 to 3)
  //=================================
  void _tft_setRotation(uint8_t rot);
  
  // Initialize all pins used by display driver
  // ** MUST be executed before SPI interface initialization
  //=================
  void TFT_PinsInit();
  
  // Perform display initialization sequence
  // Sets orientation to landscape; clears the screen
  // * All pins must be configured
  // * SPI interface must already be setup
  // * 'tft_disp_type', 'COLOR_BITS', '_width', '_height' variables must be set
  //======================
  void TFT_display_init();
  
  //===================
  void stmpe610_Init();
  
  //============================================================
  int stmpe610_get_touch(uint16_t *x, uint16_t *y, uint16_t *z);
  
  //========================
  uint32_t stmpe610_getID();
  
  // ===============================================================================
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif