File content as of revision 5:dad648238df3:

#ifndef TFT_22_ILI9225_h
#define TFT_22_ILI9225_h
#include "mbed.h"

#define FONT_LENGTH          0
#define FONT_HORZ            1
#define FONT_VERT            2
#define FONT_BYTES_VERT      3

#define ILI9225_CHARS_PER_LINE    36   

/* ILI9225 screen size */
#define ILI9225_LCD_WIDTH   176
#define ILI9225_LCD_HEIGHT  220

#define ILI9225_PORTRAIT_L  0   // SD card at the left side
#define ILI9225_LANDSCAPE_B 1   // SD card at the bottom side
#define ILI9225_PORTRAIT_R  2   // SD card at the right side
#define ILI9225_LANDSCAPE_T 3   // SD card at the top side

/* ILI9225 LCD Registers */
#define ILI9225_DRIVER_OUTPUT_CTRL      (0x01u)  // Driver Output Control
#define ILI9225_LCD_AC_DRIVING_CTRL     (0x02u)  // LCD AC Driving Control
#define ILI9225_ENTRY_MODE              (0x03u)  // Entry Mode
#define ILI9225_DISP_CTRL1              (0x07u)  // Display Control 1
#define ILI9225_BLANK_PERIOD_CTRL1      (0x08u)  // Blank Period Control
#define ILI9225_FRAME_CYCLE_CTRL        (0x0Bu)  // Frame Cycle Control
#define ILI9225_INTERFACE_CTRL          (0x0Cu)  // Interface Control
#define ILI9225_OSC_CTRL                (0x0Fu)  // Osc Control
#define ILI9225_POWER_CTRL1             (0x10u)  // Power Control 1
#define ILI9225_POWER_CTRL2             (0x11u)  // Power Control 2
#define ILI9225_POWER_CTRL3             (0x12u)  // Power Control 3
#define ILI9225_POWER_CTRL4             (0x13u)  // Power Control 4
#define ILI9225_POWER_CTRL5             (0x14u)  // Power Control 5
#define ILI9225_VCI_RECYCLING           (0x15u)  // VCI Recycling
#define ILI9225_RAM_ADDR_SET1           (0x20u)  // Horizontal GRAM Address Set
#define ILI9225_RAM_ADDR_SET2           (0x21u)  // Vertical GRAM Address Set
#define ILI9225_GRAM_DATA_REG           (0x22u)  // GRAM Data Register
#define ILI9225_GATE_SCAN_CTRL          (0x30u)  // Gate Scan Control Register
#define ILI9225_VERTICAL_SCROLL_CTRL1   (0x31u)  // Vertical Scroll Control 1 Register
#define ILI9225_VERTICAL_SCROLL_CTRL2   (0x32u)  // Vertical Scroll Control 2 Register
#define ILI9225_VERTICAL_SCROLL_CTRL3   (0x33u)  // Vertical Scroll Control 3 Register
#define ILI9225_PARTIAL_DRIVING_POS1    (0x34u)  // Partial Driving Position 1 Register
#define ILI9225_PARTIAL_DRIVING_POS2    (0x35u)  // Partial Driving Position 2 Register
#define ILI9225_HORIZONTAL_WINDOW_ADDR1 (0x36u)  // Horizontal Address Start Position
#define ILI9225_HORIZONTAL_WINDOW_ADDR2 (0x37u)  // Horizontal Address End Position
#define ILI9225_VERTICAL_WINDOW_ADDR1   (0x38u)  // Vertical Address Start Position
#define ILI9225_VERTICAL_WINDOW_ADDR2   (0x39u)  // Vertical Address End Position
#define ILI9225_GAMMA_CTRL1             (0x50u)  // Gamma Control 1
#define ILI9225_GAMMA_CTRL2             (0x51u)  // Gamma Control 2
#define ILI9225_GAMMA_CTRL3             (0x52u)  // Gamma Control 3
#define ILI9225_GAMMA_CTRL4             (0x53u)  // Gamma Control 4
#define ILI9225_GAMMA_CTRL5             (0x54u)  // Gamma Control 5
#define ILI9225_GAMMA_CTRL6             (0x55u)  // Gamma Control 6
#define ILI9225_GAMMA_CTRL7             (0x56u)  // Gamma Control 7
#define ILI9225_GAMMA_CTRL8             (0x57u)  // Gamma Control 8
#define ILI9225_GAMMA_CTRL9             (0x58u)  // Gamma Control 9
#define ILI9225_GAMMA_CTRL10            (0x59u)  // Gamma Control 10

#define ILI9225C_INVOFF  0x20
#define ILI9225C_INVON   0x21


/* RGB 24-bits color table definition (RGB888). */
#define RGB888_RGB565(color) ((((color) >> 19) & 0x1f) << 11) | ((((color) >> 10) & 0x3f) << 5) | (((color) >> 3) & 0x1f)

#define COLOR_BLACK          RGB888_RGB565(0x000000u)
#define COLOR_WHITE          RGB888_RGB565(0xFFFFFFu)
#define COLOR_BLUE           RGB888_RGB565(0x0000FFu)
#define COLOR_GREEN          RGB888_RGB565(0x00FF00u)
#define COLOR_RED            RGB888_RGB565(0xFF0000u)
#define COLOR_NAVY           RGB888_RGB565(0x000080u)
#define COLOR_DARKBLUE       RGB888_RGB565(0x00008Bu)
#define COLOR_DARKGREEN      RGB888_RGB565(0x006400u)
#define COLOR_DARKCYAN       RGB888_RGB565(0x008B8Bu)
#define COLOR_CYAN           RGB888_RGB565(0x00FFFFu)
#define COLOR_TURQUOISE      RGB888_RGB565(0x40E0D0u)
#define COLOR_INDIGO         RGB888_RGB565(0x4B0082u)
#define COLOR_DARKRED        RGB888_RGB565(0x800000u)
#define COLOR_OLIVE          RGB888_RGB565(0x808000u)
#define COLOR_GRAY           RGB888_RGB565(0x808080u)
#define COLOR_SKYBLUE        RGB888_RGB565(0x87CEEBu)
#define COLOR_BLUEVIOLET     RGB888_RGB565(0x8A2BE2u)
#define COLOR_LIGHTGREEN     RGB888_RGB565(0x90EE90u)
#define COLOR_DARKVIOLET     RGB888_RGB565(0x9400D3u)
#define COLOR_YELLOWGREEN    RGB888_RGB565(0x9ACD32u)
#define COLOR_BROWN          RGB888_RGB565(0xA52A2Au)
#define COLOR_DARKGRAY       RGB888_RGB565(0xA9A9A9u)
#define COLOR_SIENNA         RGB888_RGB565(0xA0522Du)
#define COLOR_LIGHTBLUE      RGB888_RGB565(0xADD8E6u)
#define COLOR_GREENYELLOW    RGB888_RGB565(0xADFF2Fu)
#define COLOR_SILVER         RGB888_RGB565(0xC0C0C0u)
#define COLOR_LIGHTGREY      RGB888_RGB565(0xD3D3D3u)
#define COLOR_LIGHTCYAN      RGB888_RGB565(0xE0FFFFu)
#define COLOR_VIOLET         RGB888_RGB565(0xEE82EEu)
#define COLOR_AZUR           RGB888_RGB565(0xF0FFFFu)
#define COLOR_BEIGE          RGB888_RGB565(0xF5F5DCu)
#define COLOR_MAGENTA        RGB888_RGB565(0xFF00FFu)
#define COLOR_TOMATO         RGB888_RGB565(0xFF6347u)
#define COLOR_GOLD           RGB888_RGB565(0xFFD700u)
#define COLOR_ORANGE         RGB888_RGB565(0xFFA500u)
#define COLOR_SNOW           RGB888_RGB565(0xFFFAFAu)
#define COLOR_YELLOW         RGB888_RGB565(0xFFFF00u)

/* Font defines */
#define FONT_HEADER_SIZE 4 // 1: pixel width of 1 font character, 2: pixel height, 
#define readFontByte(x) pgm_read_byte(&cfont.font[x])  

extern uint8_t Terminal6x8[];
extern uint8_t Terminal11x16[];
extern uint8_t Terminal12x16[];
extern uint8_t Trebuchet_MS16x21[];

struct _currentFont
{
    uint8_t* font;
    uint8_t width;
    uint8_t height;
    uint8_t offset;
    uint8_t numchars;
    uint8_t nbrows;
};

/// Main and core class
class TFT_22_ILI9225 : public Stream {

public:

    TFT_22_ILI9225(PinName sdi, PinName clk, PinName cs, PinName rs, PinName rst, PinName led, const char *name);
    //TFT_22_ILI9225(PinName RST, PinName RS, PinName CS, PinName LED);

    virtual bool claim (FILE *stream);

    /// Initialization
    void init(void);

    /// Clear the screen
    void cls(void);

    /// fill the screen with color:
    void fill(uint16_t color);

    /// Invert screen
    /// @param  flag true to invert, false for normal screen
    void invert(bool flag);

    /// Switch backlight on or off
    /// @param  flag true=on, false=off
    void setBacklight(double value);
    
    /// Switch backlight off
    void setBacklightOff(void);
    
    /// Switch backlight on
    void setBacklightOn(void);

    /// Switch display on or off
    /// @param  flag true=on, false=off
    void setDisplay(bool flag);

    /// Set orientation
    /// @param  orientation orientation, 0=portrait, 1=right rotated landscape, 2=reverse portrait, 3=left rotated landscape
    void setOrientation(uint8_t orientation);

    /// Get orientation
    /// @return orientation orientation, 0=portrait, 1=right rotated landscape, 2=reverse portrait, 3=left rotated landscape
    uint8_t getOrientation(void);

    /// Font size, x-axis
    /// @return horizontal size of current font, in pixels
    uint8_t fontX(void);

    /// Font size, y-axis
    /// @return vertical size of current font, in pixels
    uint8_t fontY(void);

    /// Screen size, x-axis
    /// @return horizontal size of the screen, in pixels
    /// @note   219 means 0..219 coordinates (decimal)
    uint16_t maxX(void);

    /// Screen size, x-axis
    /// @return horizontal size of the screen, in pixels
    /// @note   220 means 220 pixels and thus 0..219 coordinates (decimal)
    uint16_t width(void);

    /// Screen size, y-axis
    /// @return vertical size of the screen, in pixels
    /// @note   175 means 0..175 coordinates (decimal)
    uint16_t maxY(void);

    /// Screen size, y-axis
    /// @return vertical size of the screen, in pixels
    /// @note   176 means 176 pixels and thus 0..175 coordinates (decimal)
    uint16_t height(void);

    /// Draw circle
    /// @param  x0 center, point coordinate, x-axis
    /// @param  y0 center, point coordinate, y-axis
    /// @param  radius radius
    /// @param  color 16-bit color
    void circle(uint16_t x0, uint16_t y0, uint16_t radius, uint16_t color);

    /// Draw solid circle
    /// @param  x0 center, point coordinate, x-axis
    /// @param  y0 center, point coordinate, y-axis
    /// @param  radius radius
    /// @param  color 16-bit color
    void fillcircle(uint8_t x0, uint8_t y0, uint8_t radius, uint16_t color);

    /// Draw line, rectangle coordinates
    /// @param  x1 top left coordinate, x-axis
    /// @param  y1 top left coordinate, y-axis
    /// @param  x2 bottom right coordinate, x-axis
    /// @param  y2 bottom right coordinate, y-axis
    /// @param  color 16-bit color
    void line(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color);

    /// Draw rectangle, rectangle coordinates
    /// @param  x1 top left coordinate, x-axis
    /// @param  y1 top left coordinate, y-axis
    /// @param  x2 bottom right coordinate, x-axis
    /// @param  y2 bottom right coordinate, y-axis
    /// @param  color 16-bit color
    void rect(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color);

    /// Draw solid rectangle, rectangle coordinates
    /// @param  x1 top left coordinate, x-axis
    /// @param  y1 top left coordinate, y-axis
    /// @param  x2 bottom right coordinate, x-axis
    /// @param  y2 bottom right coordinate, y-axis
    /// @param  color 16-bit color
    void fillrect(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color);

    /// Draw pixel
    /// @param  x1 point coordinate, x-axis
    /// @param  y1 point coordinate, y-axis
    /// @param  color 16-bit color
    void pixel(uint16_t x1, uint16_t y1, uint16_t color);

    /// Calculate 16-bit color from 8-bit Red-Green-Blue components
    /// @param  red red component, 0x00..0xff
    /// @param  green green component, 0x00..0xff
    /// @param  blue blue component, 0x00..0xff
    /// @return 16-bit color
    uint16_t setColor(uint8_t red, uint8_t green, uint8_t blue);

    /// Calculate 8-bit Red-Green-Blue components from 16-bit color
    /// @param  rgb 16-bit color
    /// @param  red red component, 0x00..0xff
    /// @param  green green component, 0x00..0xff
    /// @param  blue blue component, 0x00..0xff
    void splitColor(uint16_t rgb, uint8_t &red, uint8_t &green, uint8_t &blue);

    /// Draw triangle, triangle coordinates
    /// @param  x1 corner 1 coordinate, x-axis
    /// @param  y1 corner 1 coordinate, y-axis
    /// @param  x2 corner 2 coordinate, x-axis
    /// @param  y2 corner 2 coordinate, y-axis
    /// @param  x3 corner 3 coordinate, x-axis
    /// @param  y3 corner 3 coordinate, y-axis
    /// @param  color 16-bit color
    void triangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t x3, uint16_t y3, uint16_t color);

    /// Draw solid triangle, triangle coordinates
    /// @param  x1 corner 1 coordinate, x-axis
    /// @param  y1 corner 1 coordinate, y-axis
    /// @param  x2 corner 2 coordinate, x-axis
    /// @param  y2 corner 2 coordinate, y-axis
    /// @param  x3 corner 3 coordinate, x-axis
    /// @param  y3 corner 3 coordinate, y-axis
    /// @param  color 16-bit color
    void filltriangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t x3, uint16_t y3, uint16_t color);

    /// Set current font
    /// @param  font Font name
    void setFont(uint8_t* font);

  /** put a char on the screen
   *
   * @param value char to print
   * @returns printed char
   *
   */
  virtual int putc(int value);

  /** draw a character on given position out of the active font to the TFT
   *
   * @param x x-position of char (top left) 
   * @param y y-position
   * @param c char to print
   *
   */    
    void character(int x, int y, int c);

    void foreground(uint16_t colour);

    void background(uint16_t colour);
    void locate(int x, int y);
    void gotoxy(int x, int y);
    void home(void);
    void linespacing(int line_spacing);
    
    /** calculate the max number of char in a line
     *
     * @returns max columns
     * depends on actual font size
     *
     */    
    virtual int columns(void);
    
    /** calculate the max number of columns
     *
     * @returns max column
     * depends on actual font size
     *
     */   
    virtual int rows(void);

    void unicode2ascii(char *uni_str, char *ascii_str); 
    void roundRectangle(int x0, int y0, int x1, int y1, int rad, bool fill, int color);

void window (unsigned int x, unsigned int y, unsigned int w, unsigned int h);


private:
    SPI spi;

    unsigned char* font;
    unsigned int char_x;
    unsigned int char_y;
    unsigned int char_line_spacing;

    // colours
    uint16_t _foreground;
    uint16_t _background;

    void _swap(uint16_t &a, uint16_t &b);
    void _setWindowMax(void);
    void _setWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
    void _orientCoordinates(uint16_t &x1, uint16_t &y1);
    void _writeRegister(uint16_t reg, uint16_t data);

    void _startData(void);
    void _endData(void);
    void _writeData(uint16_t data);
    void _writeCommand(uint8_t HI, uint8_t LO);

    float _brightness;

    uint16_t _maxX, _maxY;

    DigitalOut _rst;
    DigitalOut _rs;
    DigitalOut _cs;

    uint8_t _orientation;

    PwmOut _led;

    _currentFont cfont;

    // character location
    uint16_t _column;
    uint16_t _row;
    char *_path;

protected:
    //used by printf - supply a new _putc virtual function for the new device
    virtual int _putc(int c) {
        putc(c); //your new LCD put to print an ASCII character on LCD
        return 0;
    };
//assuming no reads from LCD
    virtual int _getc() {
        return -1;
    }

};

#endif