File content as of revision 36:9f5f86dfd44a:

/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
 * Copyright (c) 2007-2010, sford, http://mbed.org
 *               2013, v01: WH, Added LCD types, fixed LCD address issues, added Cursor and UDCs 
 *               2013, v02: WH, Added I2C and SPI bus interfaces
 *               2013, v03: WH, Added support for LCD40x4 which uses 2 controllers   
 *               2013, v04: WH, Added support for Display On/Off, improved 4bit bootprocess  
 *               2013, v05: WH, Added support for 8x2B, added some UDCs  
 *               2013, v06: WH, Added support for devices that use internal DC/DC converters 
 *               2013, v07: WH, Added support for backlight and include portdefinitions for LCD2004 Module from DFROBOT
 *               2014, v08: WH, Refactored in Base and Derived Classes to deal with mbed lib change regarding 'NC' defined DigitalOut pins
 *               2014, v09: WH/EO, Added Class for Native SPI controllers such as ST7032 
 *               2014, v10: WH, Added Class for Native I2C controllers such as ST7032i, Added support for MCP23008 I2C portexpander, Added support for Adafruit module  
 *               2014, v11: WH, Added support for native I2C controllers such as PCF21XX, Improved the _initCtrl() method to deal with differences between all supported controllers  
 *               2014, v12: WH, Added support for native I2C controller PCF2119 and native I2C/SPI controllers SSD1803, ST7036, added setContrast method (by JH1PJL) for supported devices (eg ST7032i) 
 *               2014, v13: WH, Added support for controllers US2066/SSD1311 (OLED), added setUDCBlink() method for supported devices (eg SSD1803), fixed issue in setPower() 
 *               2014, v14: WH, Added support for PT6314 (VFD), added setOrient() method for supported devices (eg SSD1803, US2066), added Double Height lines for supported devices, 
 *                              added 16 UDCs for supported devices (eg PCF2103), moved UDC defines to TextLCD_UDC file, added TextLCD_Config.h for feature and footprint settings.
 *               2014, v15: WH, Added AC780 support, added I2C expander modules, fixed setBacklight() for inverted logic modules. Fixed bug in LCD_SPI_N define 
 *               2014, v16: WH, Added ST7070 and KS0073 support, added setIcon(), clrIcon() and setInvert() method for supported devices  
 *
 * 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.
 */

#ifndef MBED_TEXTLCD_H
#define MBED_TEXTLCD_H

#include "mbed.h"
#include "TextLCD_Config.h"
#include "TextLCD_UDC.h"

/** A TextLCD interface for driving 4-bit HD44780-based LCDs
 *
 * Currently supports 8x1, 8x2, 12x3, 12x4, 16x1, 16x2, 16x3, 16x4, 20x2, 20x4, 24x1, 24x2, 24x4, 40x2 and 40x4 panels.
 * Interface options include direct mbed pins, I2C portexpander (PCF8474/PCF8574A or MCP23008) or SPI bus shiftregister (74595). 
 * Supports some controllers with native I2C or SPI interface. Supports some controllers that provide internal DC/DC converters for VLCD or VLED. 
 * Supports some controllers that feature programmable contrast control, powerdown, blinking UDCs and/or top/down orientation modes.
 *
 * @code
 * #include "mbed.h"
 * #include "TextLCD.h"
 * 
 * // I2C Communication
 * I2C i2c_lcd(p28,p27); // SDA, SCL
 *
 * // SPI Communication
 * SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK
 *
 * //TextLCD lcd(p15, p16, p17, p18, p19, p20);                          // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=HD44780
 * //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4);                    // SPI bus, 74595 expander, CS pin, LCD Type  
 * TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4);                    // I2C bus, PCF8574 Slaveaddress, LCD Type
 * //TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, Device Type (OLED)
 * //TextLCD_SPI_N lcd(&spi_lcd, p8, p9);                                // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032_3V3   
 * //TextLCD_I2C_N lcd(&i2c_lcd, ST7032_SA, TextLCD::LCD16x2, NC, TextLCD::ST7032_3V3);   // I2C bus, Slaveaddress, LCD Type, BL=NC, LCDTCtrl=ST7032_3V3  
 * //TextLCD_SPI_N_3_24 lcd(&spi_lcd, p8, TextLCD::LCD20x4D, NC, TextLCD::SSD1803_3V3);   // SPI bus, CS pin, LCDType=LCD20x4D, BL=NC, LCDTCtrl=SSD1803
 * //TextLCD_SPI_N_3_24 lcd(&spi_lcd, p8, TextLCD::LCD20x2, NC, TextLCD::US2066_3V3);     // SPI bus, CS pin, LCDType=LCD20x2, BL=NC, LCDTCtrl=US2066 (OLED)
 *
 * int main() {
 *   lcd.printf("Hello World!\n");
 * }
 * @endcode
 */

//The TextLCD_Config.h file selects hardware interface options to reduce memory footprint
//and provides Pin Defines for I2C PCF8574/PCF8574A or MCP23008 and SPI 74595 bus expander interfaces.
//The LCD and serial portexpanders should be wired accordingly. 

/* LCD Type information on Rows, Columns and Variant. This information is encoded in
 * an int and used for the LCDType enumerators in order to simplify code maintenance */
// Columns encoded in b7..b0
#define LCD_T_COL_MSK  0x000000FF
#define LCD_T_C6       0x00000006
#define LCD_T_C8       0x00000008
#define LCD_T_C10      0x0000000A
#define LCD_T_C12      0x0000000C
#define LCD_T_C16      0x00000010
#define LCD_T_C20      0x00000014
#define LCD_T_C24      0x00000018
#define LCD_T_C32      0x00000020
#define LCD_T_C40      0x00000028

// Rows encoded in b15..b8  
#define LCD_T_ROW_MSK  0x0000FF00
#define LCD_T_R1       0x00000100
#define LCD_T_R2       0x00000200
#define LCD_T_R3       0x00000300
#define LCD_T_R4       0x00000400
  
// Addressing mode encoded in b19..b16
#define LCD_T_ADR_MSK  0x000F0000
#define LCD_T_A        0x00000000  /*Mode A   Default 1, 2 or 4 line display                       */
#define LCD_T_B        0x00010000  /*Mode B,  Alternate 8x2 (actually 16x1 display)                */
#define LCD_T_C        0x00020000  /*Mode C,  Alternate 16x1 (actually 8x2 display)                */
#define LCD_T_D        0x00030000  /*Mode D,  Alternate 3 or 4 line display (12x4, 20x4, 24x4)     */
#define LCD_T_D1       0x00040000  /*Mode D1, Alternate 3 out of 4 line display (12x3, 20x3, 24x3) */
#define LCD_T_E        0x00050000  /*Mode E,  40x4 display (actually two 40x2)                     */
#define LCD_T_F        0x00060000  /*Mode F,  16x3 display (actually 24x2)                         */
#define LCD_T_G        0x00070000  /*Mode G,  16x3 display                                         */

/* LCD Ctrl information on interface support and features. This information is encoded in
 * an int and used for the LCDCtrl enumerators in order to simplify code maintenance */
// Interface encoded in b31..b24
#define LCD_C_BUS_MSK  0xFF000000
#define LCD_C_PAR      0x01000000  /*Parallel 4 or 8 bit data, E pin, RS pin, RW=GND            */
#define LCD_C_SPI3_8   0x02000000  /*SPI 3 line (MOSI, SCL, CS pins),  8 bits (Count Command initiates Data transfer) */
#define LCD_C_SPI3_9   0x04000000  /*SPI 3 line (MOSI, SCL, CS pins),  9 bits (RS + 8 Data)     */
#define LCD_C_SPI3_10  0x08000000  /*SPI 3 line (MOSI, SCL, CS pins), 10 bits (RS, RW + 8 Data) */
#define LCD_C_SPI3_16  0x10000000  /*SPI 3 line (MOSI, SCL, CS pins), 16 bits (RS, RW + 8 Data) */
#define LCD_C_SPI3_24  0x20000000  /*SPI 3 line (MOSI, SCL, CS pins), 24 bits (RS, RW + 8 Data) */
#define LCD_C_SPI4     0x40000000  /*SPI 4 line (MOSI, SCL, CS, RS pin), RS pin + 8 Data        */
#define LCD_C_I2C      0x80000000  /*I2C (SDA, SCL pin), 8 control bits (Co, RS, RW) + 8 Data   */
// Features encoded in b23..b16
#define LCD_C_FTR_MSK  0x00FF0000 
#define LCD_C_BST      0x00010000  /*Booster             */
#define LCD_C_CTR      0x00020000  /*Contrast Control    */
#define LCD_C_ICN      0x00040000  /*Icons               */
#define LCD_C_PDN      0x00080000  /*Power Down          */

/** A TextLCD interface for driving 4-bit HD44780-based LCDs
 *
 * @brief Currently supports 8x1, 8x2, 12x2, 12x3, 12x4, 16x1, 16x2, 16x3, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
 *        Interface options include direct mbed pins, I2C portexpander (PCF8474/PCF8574A or MCP23008) or SPI bus shiftregister (74595) and some native I2C or SPI devices 
 *
 */
class TextLCD_Base : public Stream {
//class TextLCD_Base{    

//Unfortunately this #define selection breaks Doxygen !!!
//#if (LCD_PRINTF == 1)
//class TextLCD_Base : public Stream {
//#else    
//class TextLCD_Base{    
//#endif

public:

    /** LCD panel format */
    // The commented out types exist but have not yet been tested with the library
    enum LCDType {
//        LCD6x1     = (LCD_T_A | LCD_T_C6 | LCD_T_R1),     /**<  6x1 LCD panel */          
//        LCD6x2     = (LCD_T_A | LCD_T_C6 | LCD_T_R2),     /**<  6x2 LCD panel */          
        LCD8x1     = (LCD_T_A | LCD_T_C8 | LCD_T_R1),     /**<  8x1 LCD panel */    
        LCD8x2     = (LCD_T_A | LCD_T_C8 | LCD_T_R2),     /**<  8x2 LCD panel */          
        LCD8x2B    = (LCD_T_D | LCD_T_C8 | LCD_T_R2),     /**<  8x2 LCD panel (actually 16x1) */                  
        LCD12x1    = (LCD_T_A | LCD_T_C12 | LCD_T_R1),    /**< 12x1 LCD panel */                          
        LCD12x2    = (LCD_T_A | LCD_T_C12 | LCD_T_R2),    /**< 12x2 LCD panel */                          
        LCD12x3D   = (LCD_T_D | LCD_T_C12 | LCD_T_R3),    /**< 12x3 LCD panel, special mode PCF21XX, KS0073 */                                  
        LCD12x3D1  = (LCD_T_D1 | LCD_T_C12 | LCD_T_R3),   /**< 12x3 LCD panel, special mode PCF21XX, KS0073 */                                          
//        LCD12x3G   = (LCD_T_G | LCD_T_C12 | LCD_T_R3),    /**< 12x3 LCD panel, special mode ST7036 */                                      
        LCD12x4    = (LCD_T_A | LCD_T_C12 | LCD_T_R4),    /**< 12x4 LCD panel */                  
        LCD12x4D   = (LCD_T_B | LCD_T_C12 | LCD_T_R4),    /**< 12x4 LCD panel, special mode PCF21XX, KS0073 */                                          
        LCD16x1    = (LCD_T_A | LCD_T_C16 | LCD_T_R1),    /**< 16x1 LCD panel */                  
        LCD16x1C   = (LCD_T_C | LCD_T_C16 | LCD_T_R1),    /**< 16x1 LCD panel (actually 8x2) */          
        LCD16x2    = (LCD_T_A | LCD_T_C16 | LCD_T_R2),    /**< 16x2 LCD panel (default) */
//        LCD16x2B   = (LCD_T_B | LCD_T_C16 | LCD_T_R2),    /**< 16x2 LCD panel, alternate addressing, wrong.. */
        LCD16x3D   = (LCD_T_D | LCD_T_C16 | LCD_T_R3),    /**< 16x3 LCD panel, special mode SSD1803 */                      
//        LCD16x3D1  = (LCD_T_D1 | LCD_T_C16 | LCD_T_R3),   /**< 16x3 LCD panel, special mode SSD1803 */                
        LCD16x3F   = (LCD_T_F | LCD_T_C16 | LCD_T_R3),    /**< 16x3 LCD panel (actually 24x2) */                
        LCD16x3G   = (LCD_T_G | LCD_T_C16 | LCD_T_R3),    /**< 16x3 LCD panel, special mode ST7036 */                              
        LCD16x4    = (LCD_T_A | LCD_T_C16 | LCD_T_R4),    /**< 16x4 LCD panel */        
//        LCD16x4D   = (LCD_T_D | LCD_T_C16 | LCD_T_R4),    /**< 16x4 LCD panel, special mode SSD1803 */                
        LCD20x1    = (LCD_T_A | LCD_T_C20 | LCD_T_R1),    /**< 20x1 LCD panel */
        LCD20x2    = (LCD_T_A | LCD_T_C20 | LCD_T_R2),    /**< 20x2 LCD panel */
//        LCD20x3    = (LCD_T_A | LCD_T_C20 | LCD_T_R3),    /**< 20x3 LCD panel */                        
//        LCD20x3D   = (LCD_T_D | LCD_T_C20 | LCD_T_R3),    /**< 20x3 LCD panel, special mode SSD1803 */                        
//        LCD20x3D1  = (LCD_T_D1 | LCD_T_C20 | LCD_T_R3),   /**< 20x3 LCD panel, special mode SSD1803 */                        
        LCD20x4    = (LCD_T_A | LCD_T_C20 | LCD_T_R4),    /**< 20x4 LCD panel */
        LCD20x4D   = (LCD_T_D | LCD_T_C20 | LCD_T_R4),    /**< 20x4 LCD panel, special mode SSD1803 */                        
        LCD24x1    = (LCD_T_A | LCD_T_C24 | LCD_T_R1),    /**< 24x1 LCD panel */        
        LCD24x2    = (LCD_T_A | LCD_T_C24 | LCD_T_R2),    /**< 24x2 LCD panel */        
//        LCD24x3D   = (LCD_T_D | LCD_T_C24 | LCD_T_R3),    /**< 24x3 LCD panel */                
//        LCD24x3D1  = (LCD_T_D | LCD_T_C24 | LCD_T_R3),    /**< 24x3 LCD panel */                        
        LCD24x4D   = (LCD_T_D | LCD_T_C24 | LCD_T_R4),    /**< 24x4 LCD panel, special mode KS0078 */                                                          
//        LCD32x1    = (LCD_T_A | LCD_T_C32 | LCD_T_R1),    /**< 32x1 LCD panel */
//        LCD32x1C   = (LCD_T_C | LCD_T_C32 | LCD_T_R1),    /**< 32x1 LCD panel (actually 16x2) */                                        
//        LCD32x2    = (LCD_T_A | LCD_T_C32 | LCD_T_R2),    /**< 32x2 LCD panel */                        
//        LCD32x4    = (LCD_T_A | LCD_T_C32 | LCD_T_R4),    /**< 32x4 LCD panel */                        
//        LCD40x1    = (LCD_T_A | LCD_T_C40 | LCD_T_R1),    /**< 40x1 LCD panel */                        
//        LCD40x1C   = (LCD_T_C | LCD_T_C40 | LCD_T_R1),    /**< 40x1 LCD panel (actually 20x2) */                        
        LCD40x2    = (LCD_T_A | LCD_T_C40 | LCD_T_R2),    /**< 40x2 LCD panel */                
        LCD40x4    = (LCD_T_E | LCD_T_C40 | LCD_T_R4)     /**< 40x4 LCD panel, Two controller version */                        
    };


    /** LCD Controller Device */
    enum LCDCtrl {
        HD44780     =  0 |  LCD_C_PAR,                                                                    /**<  HD44780 or full equivalent (default)         */    
        WS0010      =  1 | (LCD_C_PAR | LCD_C_SPI3_10 | LCD_C_PDN),                                       /**<  WS0010/RS0010 OLED Controller, 4/8 bit, SPI3 */    
        ST7036_3V3  =  2 | (LCD_C_PAR | LCD_C_SPI4    | LCD_C_I2C | LCD_C_BST | LCD_C_CTR),               /**<  ST7036  3V3 with Booster, 4/8 bit, SPI4, I2C */   
        ST7036_5V   =  3 | (LCD_C_PAR | LCD_C_SPI4    | LCD_C_I2C | LCD_C_BST | LCD_C_CTR),               /**<  ST7036  5V no Booster, 4/8 bit, SPI4, I2C    */   
        ST7032_3V3  =  4 | (LCD_C_PAR | LCD_C_SPI4    | LCD_C_I2C | LCD_C_BST | LCD_C_CTR),               /**<  ST7032  3V3 with Booster, 4/8 bit, SPI4, I2C */   
        ST7032_5V   =  5 | (LCD_C_PAR | LCD_C_SPI4    | LCD_C_I2C | LCD_C_CTR),                           /**<  ST7032  5V no Booster, 4/8 bit, SPI4, I2C    */           
        KS0078      =  6 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_PDN),                                       /**<  KS0078  24x4 support, 4/8 bit, SPI3          */                   
        PCF2103_3V3 =  7 | (LCD_C_PAR | LCD_C_I2C),                                                       /**<  PCF2103 3V3 no Booster, 4/8 bit, I2C         */                                   
        PCF2113_3V3 =  8 | (LCD_C_PAR | LCD_C_I2C     | LCD_C_BST | LCD_C_CTR),                           /**<  PCF2113 3V3 with Booster, 4/8 bit, I2C       */                           
        PCF2116_3V3 =  9 | (LCD_C_PAR | LCD_C_I2C     | LCD_C_BST),                                       /**<  PCF2116 3V3 with Booster, 4/8 bit, I2C       */                           
        PCF2116_5V  = 10 | (LCD_C_PAR | LCD_C_I2C),                                                       /**<  PCF2116 5V no Booster, 4/8 bit, I2C          */        
        PCF2119_3V3 = 11 | (LCD_C_PAR | LCD_C_I2C     | LCD_C_BST | LCD_C_CTR),                           /**<  PCF2119 3V3 with Booster, 4/8 bit, I2C       */                           
//        PCF2119_5V  = 12 | (LCD_C_PAR | LCD_C_I2C),                                                       /**<  PCF2119 5V no Booster, 4/8 bit, I2C          */
        AIP31068    = 13 | (LCD_C_SPI3_9  | LCD_C_I2C | LCD_C_BST),                                       /**<  AIP31068 I2C, SPI3                           */                           
        SSD1803_3V3 = 14 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR | LCD_C_PDN),   /**<  SSD1803 3V3 with Booster, 4/8 bit, I2C, SPI3 */
//        SSD1803_5V  = 15 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_BST | LCD_C_CTR | LCD_C_PDN),   /**<  SSD1803 3V3 with Booster, 4/8 bit, I2C, SPI3 */
        US2066_3V3  = 16 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_I2C | LCD_C_CTR | LCD_C_PDN),               /**<  US2066/SSD1311 3V3, 4/8 bit, I2C, SPI3 */
        PT6314      = 17 | (LCD_C_PAR | LCD_C_SPI3_16 | LCD_C_CTR),                                       /**<  PT6314  VFD, 4/8 bit, SPI3                   */
        AC780       = 18 | (LCD_C_PAR | LCD_C_SPI4 | LCD_C_I2C | LCD_C_PDN),                              /**<  AC780/KS0066i 4/8 bit, SPI, I2C              */
//        WS0012      = 19 | (LCD_C_PAR | LCD_C_SPI3_10 | LCD_C_I2C | LCD_C_PDN),                           /**<  WS0012 4/8 bit, SPI, I2C                     */
        ST7070      = 20 | (LCD_C_PAR | LCD_C_SPI3_8 | LCD_C_SPI4),                                       /**<  ST7070 4/8 bit, SPI3                         */
        KS0073      = 21 | (LCD_C_PAR | LCD_C_SPI3_24 | LCD_C_PDN)                                        /**<  KS0073 4/8 bit, SPI3                         */
    };


    /** LCD Cursor control */
    enum LCDCursor {
        CurOff_BlkOff = 0x00,  /**<  Cursor Off, Blinking Char Off */    
        CurOn_BlkOff  = 0x02,  /**<  Cursor On, Blinking Char Off */    
        CurOff_BlkOn  = 0x01,  /**<  Cursor Off, Blinking Char On */    
        CurOn_BlkOn   = 0x03   /**<  Cursor On, Blinking Char On */    
    };

    /** LCD Display control */
    enum LCDMode {
        DispOff = 0x00,  /**<  Display Off */    
        DispOn  = 0x04   /**<  Display On */            
    };

   /** LCD Backlight control */
    enum LCDBacklight {
        LightOff,        /**<  Backlight Off */    
        LightOn          /**<  Backlight On */            
    };

   /** LCD Blink control (UDC), supported for some Controllers */
    enum LCDBlink {
        BlinkOff,        /**<  Blink Off */    
        BlinkOn          /**<  Blink On  */            
    };

   /** LCD Orientation control, supported for some Controllers */
    enum LCDOrient {
        Top,             /**<  Top view */    
        Bottom           /**<  Upside down view */            
    };

   /** LCD BigFont control, supported for some Controllers */
    enum LCDBigFont {
        None,            /**<  no lines              */    
        TopLine,         /**<  1+2 line              */    
        CenterLine,      /**<  2+3 line              */    
        BottomLine,      /**<  2+3 line or 3+4 line  */
        TopBottomLine    /**<  1+2 line and 3+4 line */
    };


#if(LCD_PRINTF != 1)
   /** Write a character to the LCD
     *
     * @param c The character to write to the display
     */
   int putc(int c);

    /** Write a raw string to the LCD
     *
     * @param string text, may be followed by variables to emulate formatting the string.
     *                     However, printf formatting is NOT supported and variables will be ignored! 
     */
    int printf(const char* text, ...);
#else    
#if DOXYGEN_ONLY
    /** Write a character to the LCD
     *
     * @param c The character to write to the display
     */
    int putc(int c);

    /** Write a formatted string to the LCD
     *
     * @param format A printf-style format string, followed by the
     *               variables to use in formatting the string.
     */
    int printf(const char* format, ...);   
#endif
    
#endif    

    /** Locate cursor to a screen column and row
     *
     * @param column  The horizontal position from the left, indexed from 0
     * @param row     The vertical position from the top, indexed from 0
     */
    void locate(int column, int row);

    /** Return the memoryaddress of screen column and row location
     *
     * @param column  The horizontal position from the left, indexed from 0
     * @param row     The vertical position from the top, indexed from 0
     * @return        The memoryaddress of screen column and row location
     */
    int  getAddress(int column, int row);     
    
    /** Set the memoryaddress of screen column and row location
     *
     * @param column  The horizontal position from the left, indexed from 0
     * @param row     The vertical position from the top, indexed from 0
     */
    void setAddress(int column, int row);        

    /** Clear the screen and locate to 0,0
     */
    void cls();

    /** Return the number of rows
     *
     * @return  The number of rows
     */
    int rows();
    
    /** Return the number of columns
     *
     * @return  The number of columns
     */  
    int columns();  

    /** Set the Cursormode
     *
     * @param cursorMode  The Cursor mode (CurOff_BlkOff, CurOn_BlkOff, CurOff_BlkOn, CurOn_BlkOn)
     */
    void setCursor(LCDCursor cursorMode);     
    
    /** Set the Displaymode
     *
     * @param displayMode The Display mode (DispOff, DispOn)
     */
    void setMode(LCDMode displayMode);     

    /** Set the Backlight mode
     *
     *  @param backlightMode The Backlight mode (LightOff, LightOn)
     */
    void setBacklight(LCDBacklight backlightMode); 

    /** Set User Defined Characters (UDC)
     *
     * @param unsigned char c   The Index of the UDC (0..7) for HD44780 clones and (0..15) for some more advanced controllers
     * @param char *udc_data    The bitpatterns for the UDC (8 bytes of 5 significant bits for bitpattern and 3 bits for blinkmode (advanced types))       
     */
    void setUDC(unsigned char c, char *udc_data);

    /** Set UDC Blink and Icon blink
     * setUDCBlink method is supported by some compatible devices (eg SSD1803) 
     *
     * @param blinkMode The Blink mode (BlinkOff, BlinkOn)
     */
    void setUDCBlink(LCDBlink blinkMode);

    /** Set Contrast
     * setContrast method is supported by some compatible devices (eg ST7032i) that have onboard LCD voltage generation
     * Code imported from fork by JH1PJL
     *
     * @param unsigned char c   contrast data (6 significant bits, valid range 0..63, Value 0 will disable the Vgen)  
     * @return none
     */
    void setContrast(unsigned char c = LCD_DEF_CONTRAST);

    /** Set Power
     * setPower method is supported by some compatible devices (eg SSD1803) that have power down modes
     *
     * @param bool powerOn  Power on/off   
     * @return none
     */
    void setPower(bool powerOn = true);

    /** Set Orient
     * setOrient method is supported by some compatible devices (eg SSD1803, US2066) that have top/bottom view modes
     *
     * @param LCDOrient orient Orientation 
     * @return none
     */
    void setOrient(LCDOrient orient = Top);

    /** Set Big Font
     * setBigFont method is supported by some compatible devices (eg SSD1803, US2066) 
     *
     * @param lines  The selected Big Font lines (None, TopLine, CenterLine, BottomLine, TopBottomLine)
     *                                            Double height characters can be shown on lines 1+2, 2+3, 3+4 or 1+2 and 3+4
     *                                            Valid double height lines depend on the LCDs number of rows.
     */
    void setBigFont(LCDBigFont lines);

    /** Set Icons
    *
    * @param unsigned char idx   The Index of the icon pattern (0..15) for KS0073 and similar controllers
    *                            and Index (0..31) for PCF2103 and similar controllers  
    * @param unsigned char data  The bitpattern for the icons (6 lsb for KS0073 bitpattern (5 lsb for KS0078) and 2 msb for blinkmode)       
    *                            The bitpattern for the PCF2103 icons is 5 lsb (UDC 0..2) and 5 lsb for blinkmode (UDC 4..6)         
    */    
    void setIcon(unsigned char idx, unsigned char data);

    /** Clear Icons
     *
     * @param  none
     * @return none
     */
    //@TODO Add support for 40x4 dual controller       
    void clrIcon();

   /** Set Invert
     * setInvert method is supported by some compatible devices (eg KS0073) to swap between black and white 
     *
     * @param bool invertOn  Invert on/off   
     * @return none
     */
   //@TODO Add support for 40x4 dual controller  
   void setInvert(bool invertOn);

protected:

   /** LCD controller select, mainly used for LCD40x4
     */
    enum _LCDCtrl_Idx {
        _LCDCtrl_0,  /*<  Primary */    
        _LCDCtrl_1,  /*<  Secondary */            
    };

    /** LCD Datalength control to select between 4 or 8 bit data/commands, used for native Serial interface */
    enum _LCDDatalength {
        _LCD_DL_4 = 0x00,  /**<  Datalength 4 bit */    
        _LCD_DL_8 = 0x10   /**<  Datalength 8 bit */            
    };

    /** Create a TextLCD_Base interface
      * @brief Base class, can not be instantiated
      *
      * @param type  Sets the panel size/addressing mode (default = LCD16x2)
      * @param ctrl  LCD controller (default = HD44780)           
      */
    TextLCD_Base(LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);
    
    // Stream implementation functions
    virtual int _putc(int value);
    virtual int _getc();

/** Medium level initialisation method for LCD controller
  *  @param _LCDDatalength dl sets the datalength of data/commands
  *  @return none
  */
    void _init(_LCDDatalength dl = _LCD_DL_4);     

/** Low level initialisation method for LCD controller
  *   Set number of lines, fonttype, no cursor etc
  *   The controller is accessed in 4-bit parallel mode either directly via mbed pins or through I2C or SPI expander.
  *   Some controllers also support native I2C or SPI interfaces. 
  *
  *  @param _LCDDatalength dl sets the 4 or 8 bit datalength of data/commands. Required for some native serial modes.
  *  @return none  
  */
    void _initCtrl(_LCDDatalength dl = _LCD_DL_4);    

/** Low level character address set method
  */  
    int  _address(int column, int row);
    
/** Low level cursor enable or disable method
  */  
    void _setCursor(LCDCursor show);

/** Low level method to store user defined characters for current controller
  *
  * @param unsigned char c   The Index of the UDC (0..7) for HD44780 clones and (0..15) for some more advanced controllers 
  * @param char *udc_data    The bitpatterns for the UDC (8 bytes of 5 significant bits)     
  */     
    void _setUDC(unsigned char c, char *udc_data);   

/** Low level method to restore the cursortype and display mode for current controller
  */     
    void _setCursorAndDisplayMode(LCDMode displayMode, LCDCursor cursorType);       
    
/** Low level nibble write operation to LCD controller (serial or parallel)
  */
    void _writeNibble(int value);
   
/** Low level command byte write operation to LCD controller.
  * Methods resets the RS bit and provides the required timing for the command.
  */
    void _writeCommand(int command);
    
/** Low level data byte write operation to LCD controller (serial or parallel).
  * Methods sets the RS bit and provides the required timing for the data.
  */   
    void _writeData(int data);

/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value) = 0;

/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
  * Set the RS pin ( 0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value) = 0;  

/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value) = 0;
    
/** Pure Virtual Low level writes to LCD Bus (serial or parallel)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value) = 0;

/** Low level byte write operation to LCD controller (serial or parallel)
  * Depending on the RS pin this byte will be interpreted as data or command
  */
    virtual void _writeByte(int value);

//Display type
    LCDType _type;
    int _nr_cols;    
    int _nr_rows;    
    int _addr_mode;    
        
//Display mode
    LCDMode _currentMode;

//Controller type 
    LCDCtrl _ctrl;    

//Controller select, mainly used for LCD40x4 
    _LCDCtrl_Idx _ctrl_idx;    

// Cursor
    int _column;
    int _row;
    LCDCursor _currentCursor; 

// Function modes saved to allow switch between Instruction sets after initialisation time 
    int _function, _function_1, _function_x;

// Icon, Booster mode and contrast saved to allow contrast change at later time
// Only available for controllers with added features
    int _icon_power, _contrast;          
};

//--------- End TextLCD_Base -----------


//--------- Start TextLCD Bus -----------

/** Create a TextLCD interface for using regular mbed pins
  *
  */
class TextLCD : public TextLCD_Base {
public:    
    /** Create a TextLCD interface for using regular mbed pins
     *
     * @param rs    Instruction/data control line
     * @param e     Enable line (clock)
     * @param d4-d7 Data lines for using as a 4-bit interface
     * @param type  Sets the panel size/addressing mode (default = LCD16x2)
     * @param bl    Backlight control line (optional, default = NC)      
     * @param e2    Enable2 line (clock for second controller, LCD40x4 only)  
     * @param ctrl  LCD controller (default = HD44780)           
     */
    TextLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2, PinName bl = NC, PinName e2 = NC, LCDCtrl ctrl = HD44780);

   /** Destruct a TextLCD interface for using regular mbed pins
     *
     * @param  none
     * @return none
     */ 
    virtual ~TextLCD();

private:    

/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (parallel)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);


/** Regular mbed pins bus
  */
    DigitalOut _rs, _e;
    BusOut _d;
    
/** Optional Hardware pins for the Backlight and LCD40x4 device
  * Default PinName value is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins
  */
    DigitalOut *_bl, *_e2;       
};

//----------- End TextLCD ---------------


//--------- Start TextLCD_I2C -----------
#if(LCD_I2C == 1) /* I2C Expander PCF8574/MCP23008 */

/** Create a TextLCD interface using an I2C PCF8574 (or PCF8574A) or MCP23008 portexpander
  *
  */
class TextLCD_I2C : public TextLCD_Base {    
public:
   /** Create a TextLCD interface using an I2C PCF8574 (or PCF8574A) or MCP23008 portexpander
     *
     * @param i2c             I2C Bus
     * @param deviceAddress   I2C slave address (PCF8574 or PCF8574A, default = PCF8574_SA0 = 0x40)
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param ctrl            LCD controller (default = HD44780)                
     */
    TextLCD_I2C(I2C *i2c, char deviceAddress = PCF8574_SA0, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);

private:
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);
      
/** Write data to MCP23008 I2C portexpander
  *  @param reg register to write
  *  @param value data to write
  *  @return none     
  *
  */
    void _write_register (int reg, int value);     
  
//I2C bus
    I2C *_i2c;
    char _slaveAddress;
    
// Internal bus mirror value for serial bus only
    char _lcd_bus;      
};
#endif /* I2C Expander PCF8574/MCP23008 */

//---------- End TextLCD_I2C ------------


//--------- Start TextLCD_SPI -----------
#if(LCD_SPI == 1) /* SPI Expander SN74595          */

/** Create a TextLCD interface using an SPI 74595 portexpander
  *
  */
class TextLCD_SPI : public TextLCD_Base {    
public:
    /** Create a TextLCD interface using an SPI 74595 portexpander
     *
     * @param spi             SPI Bus
     * @param cs              chip select pin (active low)
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param ctrl            LCD controller (default = HD44780)                     
     */
    TextLCD_SPI(SPI *spi, PinName cs, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial expander)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);
    
/** Implementation of Low level writes to LCD Bus (serial expander)
  * Set the CS pin (0 = select, 1 = deselect).
  */   
    virtual void _setCS(bool value);
    
///** Low level writes to LCD serial bus only (serial expander)
//  */
//    void _writeBus();      
   
// SPI bus        
    SPI *_spi;
    DigitalOut _cs;    
    
// Internal bus mirror value for serial bus only
    char _lcd_bus;   
};
#endif /* SPI Expander SN74595          */
//---------- End TextLCD_SPI ------------


//--------- Start TextLCD_SPI_N -----------
#if(LCD_SPI_N == 1) /* Native SPI bus     */

/** Create a TextLCD interface using a controller with native SPI4 interface
  *
  */
class TextLCD_SPI_N : public TextLCD_Base {    
public:
    /** Create a TextLCD interface using a controller with native SPI4 interface
     *
     * @param spi             SPI Bus
     * @param cs              chip select pin (active low)
     * @param rs              Instruction/data control line
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param bl              Backlight control line (optional, default = NC)  
     * @param ctrl            LCD controller (default = ST7032_3V3)                     
     */
    TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7032_3V3);
    virtual ~TextLCD_SPI_N(void);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);

/** Low level writes to LCD serial bus only (serial native)
  */
    virtual void _writeByte(int value);
   
// SPI bus        
    SPI *_spi;
    DigitalOut _cs;    
    DigitalOut _rs;
    
//Backlight    
    DigitalOut *_bl;
};
#endif /* Native SPI bus     */
//---------- End TextLCD_SPI_N ------------


//-------- Start TextLCD_SPI_N_3_8 --------
#if(LCD_SPI_N_3_8 == 1) /* Native SPI bus     */

class TextLCD_SPI_N_3_8 : public TextLCD_Base {    
public:
 /** Create a TextLCD interface using a controller with a native SPI3 8 bits interface
   * This mode is supported by ST7070. Note that implementation in TexTLCD is not very efficient due to
   * structure of the TextLCD library: each databyte is written separately and requires a separate 'count command' set to 1 byte.
   *
   * @param spi             SPI Bus
   * @param cs              chip select pin (active low)
   * @param type            Sets the panel size/addressing mode (default = LCD16x2)
   * @param bl              Backlight control line (optional, default = NC)  
   * @param ctrl            LCD controller (default = ST7070) 
   */       
  TextLCD_SPI_N_3_8(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7070);

  virtual ~TextLCD_SPI_N_3_8(void);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);

/** Low level writes to LCD serial bus only (serial native)
  */
    virtual void _writeByte(int value);
   
// SPI bus        
    SPI *_spi;
    DigitalOut _cs;    

// controlbyte to select between data and command. Internal value for serial bus only
    char _controlbyte;   
    
//Backlight    
    DigitalOut *_bl;
};
 
#endif /* Native SPI bus     */  
//------- End TextLCD_SPI_N_3_8 -----------



//------- Start TextLCD_SPI_N_3_9 ---------
#if(LCD_SPI_N_3_9 == 1) /* Native SPI bus     */
//Code checked out on logic analyser. Not yet tested on hardware..

/** Create a TextLCD interface using a controller with native SPI3 9 bits interface
  * Note: current mbed libs only support SPI 9 bit mode for NXP platforms
  *
  */
class TextLCD_SPI_N_3_9 : public TextLCD_Base {    
public:
   /** Create a TextLCD interface using a controller with native SPI3 9 bits interface
     * Note: current mbed libs only support SPI 9 bit mode for NXP platforms
     *
     * @param spi             SPI Bus
     * @param cs              chip select pin (active low)
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param bl              Backlight control line (optional, default = NC)  
     * @param ctrl            LCD controller (default = AIP31068)                     
     */
    TextLCD_SPI_N_3_9(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = AIP31068);
    virtual ~TextLCD_SPI_N_3_9(void);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);

/** Low level writes to LCD serial bus only (serial native)
  */
    virtual void _writeByte(int value);
   
// SPI bus        
    SPI *_spi;
    DigitalOut _cs;    
   
// controlbyte to select between data and command. Internal value for serial bus only
    char _controlbyte;   

//Backlight
    DigitalOut *_bl;    
};
#endif /* Native SPI bus     */
//-------- End TextLCD_SPI_N_3_9 ----------


//------- Start TextLCD_SPI_N_3_10 ---------
#if(LCD_SPI_N_3_10 == 1) /* Native SPI bus     */

/** Create a TextLCD interface using a controller with native SPI3 10 bits interface
  * Note: current mbed libs only support SPI 10 bit mode for NXP platforms
  *
  */
class TextLCD_SPI_N_3_10 : public TextLCD_Base {    
public:
   /** Create a TextLCD interface using a controller with native SPI3 10 bits interface
     * Note: current mbed libs only support SPI 10 bit mode for NXP platforms
     *
     * @param spi             SPI Bus
     * @param cs              chip select pin (active low)
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param bl              Backlight control line (optional, default = NC)  
     * @param ctrl            LCD controller (default = AIP31068)                     
     */
    TextLCD_SPI_N_3_10(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = AIP31068);
    virtual ~TextLCD_SPI_N_3_10(void);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);

/** Low level writes to LCD serial bus only (serial native)
  */
    virtual void _writeByte(int value);
   
// SPI bus        
    SPI *_spi;
    DigitalOut _cs;    
       
// controlbyte to select between data and command. Internal value for serial bus only
    char _controlbyte;   

//Backlight
    DigitalOut *_bl;    
};

#endif /* Native SPI bus     */
//-------- End TextLCD_SPI_N_3_10 ----------


//------- Start TextLCD_SPI_N_3_16 ---------
#if(LCD_SPI_N_3_16 == 1) /* Native SPI bus     */
//Code checked out on logic analyser. Not yet tested on hardware..

/** Create a TextLCD interface using a controller with native SPI3 16 bits interface
  *
  */
class TextLCD_SPI_N_3_16 : public TextLCD_Base {    
public:
   /** Create a TextLCD interface using a controller with native SPI3 16 bits interface
     *
     * @param spi             SPI Bus
     * @param cs              chip select pin (active low)
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param bl              Backlight control line (optional, default = NC)  
     * @param ctrl            LCD controller (default = PT6314)                     
     */
    TextLCD_SPI_N_3_16(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = PT6314);
    virtual ~TextLCD_SPI_N_3_16(void);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);

/** Low level writes to LCD serial bus only (serial native)
  */
    virtual void _writeByte(int value);
   
// SPI bus        
    SPI *_spi;
    DigitalOut _cs;    
   
// controlbyte to select between data and command. Internal value for serial bus only
    char _controlbyte;   

//Backlight
    DigitalOut *_bl;    
};
#endif /* Native SPI bus     */
//-------- End TextLCD_SPI_N_3_16 ----------


//------- Start TextLCD_SPI_N_3_24 ---------
#if(LCD_SPI_N_3_24 == 1) /* Native SPI bus     */

/** Create a TextLCD interface using a controller with native SPI3 24 bits interface
  * Note: lib uses SPI 8 bit mode
  *
  */
class TextLCD_SPI_N_3_24 : public TextLCD_Base {    
public:
   /** Create a TextLCD interface using a controller with native SPI3 24 bits interface
     * Note: lib uses SPI 8 bit mode
     *
     * @param spi             SPI Bus
     * @param cs              chip select pin (active low)
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param bl              Backlight control line (optional, default = NC)  
     * @param ctrl            LCD controller (default = SSD1803)                     
     */
    TextLCD_SPI_N_3_24(SPI *spi, PinName cs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = SSD1803_3V3);
    virtual ~TextLCD_SPI_N_3_24(void);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the RS pin (0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);

/** Low level writes to LCD serial bus only (serial native)
  */
    virtual void _writeByte(int value);
   
// SPI bus        
    SPI *_spi;
    DigitalOut _cs;    
   
// controlbyte to select between data and command. Internal value for serial bus only
    char _controlbyte;   

//Backlight
    DigitalOut *_bl;    
};
#endif /* Native SPI bus     */
//-------- End TextLCD_SPI_N_3_24 ----------


//--------- Start TextLCD_I2C_N -----------
#if(LCD_I2C_N == 1)  /* Native I2C */

/** Create a TextLCD interface using a controller with native I2C interface
  *
  */
class TextLCD_I2C_N : public TextLCD_Base {    
public:
    /** Create a TextLCD interface using a controller with native I2C interface
     *
     * @param i2c             I2C Bus
     * @param deviceAddress   I2C slave address (default = ST7032_SA = 0x7C)  
     * @param type            Sets the panel size/addressing mode (default = LCD16x2)
     * @param bl              Backlight control line (optional, default = NC)       
     * @param ctrl            LCD controller (default = ST7032_3V3)                     
     */
    TextLCD_I2C_N(I2C *i2c, char deviceAddress = ST7032_SA, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7032_3V3);
    virtual ~TextLCD_I2C_N(void);

private:

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the Enable pin.
  */
    virtual void _setEnable(bool value);

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the RS pin ( 0 = Command, 1 = Data).
  */   
    virtual void _setRS(bool value);  

/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the BL pin (0 = Backlight Off, 1 = Backlight On).
  */   
    virtual void _setBL(bool value);
    
/** Implementation of pure Virtual Low level writes to LCD Bus (serial native)
  * Set the databus value (4 bit).
  */   
    virtual void _setData(int value);

/** Low level writes to LCD serial bus only (serial native)
  */
    virtual void _writeByte(int value);

//I2C bus
    I2C *_i2c;
    char _slaveAddress;
    
// controlbyte to select between data and command. Internal value for serial bus only
    char _controlbyte;   
    
//Backlight
    DigitalOut *_bl;       
   
};
#endif /* Native I2C */
//---------- End TextLCD_I2C_N ------------

#endif