proyecto LCD

Revision:
9:2db641efba7e
Parent:
7:44f34c09bd37
--- a/TextLCD.cpp	Thu Jan 02 21:07:01 2014 +0000
+++ b/TextLCD.cpp	Wed Nov 13 21:28:23 2019 +0000
@@ -1,5 +1,23 @@
-/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
+/* mbed TextLCD Library, for LCDs based on HD44780 controllers
  * 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 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 
+ *               2015, v17: WH, Clean up low-level _writeCommand() and _writeData(), Added support for alternative fonttables (eg PCF21XX), Added ST7066_ACM controller for ACM1602 module 
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -19,141 +37,3846 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-
+#include "mbed.h"
 #include "TextLCD.h"
-#include "mbed.h"
-
-TextLCD::TextLCD(PinName rs, PinName e, PinName d4, PinName d5,
-                 PinName d6, PinName d7, LCDType type) : _rs(rs),
-        _e(e), _d(d4, d5, d6, d7),
-        _type(type) {
-
-    _e  = 1;
-    _rs = 0;            // command mode
-
-    wait(0.015);        // Wait 15ms to ensure powered up
-
-    // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
-    for (int i=0; i<3; i++) {
-        writeByte(0x3);
-        wait(0.00164);  // this command takes 1.64ms, so wait for it
+#include "TextLCD_UDC.inc"
+   
+/** Create a TextLCD_Base interface
+  *
+  * @param type  Sets the panel size/addressing mode (default = LCD16x2)
+  * @param ctrl  LCD controller (default = HD44780)           
+  */
+TextLCD_Base::TextLCD_Base(LCDType type, LCDCtrl ctrl) : _type(type), _ctrl(ctrl) {
+    
+  // Extract LCDType data  
+
+  // Columns encoded in b7..b0
+  _nr_cols = (_type & 0xFF);          
+
+  // Rows encoded in b15..b8  
+  _nr_rows = ((_type >> 8) & 0xFF);  
+
+  // Addressing mode encoded in b19..b16  
+  _addr_mode = _type & LCD_T_ADR_MSK;
+  
+  // Font table, encoded in LCDCtrl  
+  _font = _type & LCD_C_FNT_MSK;
+}
+
+/**  Init the LCD Controller(s)
+  *  Clear display 
+  *  @param _LCDDatalength dl sets the datalength of data/commands
+  *  @return none 
+  */
+void TextLCD_Base::_init(_LCDDatalength dl) {
+  
+  // Select and configure second LCD controller when needed
+  if(_type==LCD40x4) {
+    _ctrl_idx=_LCDCtrl_1;        // Select 2nd controller   
+    _initCtrl(dl);               // Init 2nd controller   
+  }
+    
+  // Select and configure primary LCD controller
+  _ctrl_idx=_LCDCtrl_0;          // Select primary controller  
+  _initCtrl(dl);                 // Init primary controller
+
+  // Clear whole display and Reset Cursor location
+  // Note: This will make sure that some 3-line displays that skip topline of a 4-line configuration 
+  //       are cleared and init cursor correctly.
+  cls();   
+} 
+
+/**  Init the 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  
+  *
+  *  Note: some configurations are commented out because they have not yet been tested due to lack of hardware
+  */
+void TextLCD_Base::_initCtrl(_LCDDatalength dl) {
+  int _bias_lines=0; // Set Bias and lines (Instr Set 1), temporary variable.
+  int _lines=0;      // Set lines (Ext Instr Set), temporary variable.
+
+    this->_setRS(false); // command mode
+    
+    wait_ms(20);         // Wait 20ms to ensure powered up
+
+    if (dl == _LCD_DL_4) {
+      // The Controller could be in 8 bit mode (power-on reset) or in 4 bit mode (warm reboot) at this point.
+      // Follow this procedure to make sure the Controller enters the correct state. The hardware interface
+      // between the uP and the LCD can only write the 4 most significant bits (Most Significant Nibble, MSN).
+      // In 4 bit mode the LCD expects the MSN first, followed by the LSN.
+      //
+      //    Current state:               8 bit mode                |  4 bit mode, MSN is next      | 4 bit mode, LSN is next          
+                           //-------------------------------------------------------------------------------------------------                          
+      _writeNibble(0x3);   //  set 8 bit mode (MSN) and dummy LSN, |   set 8 bit mode (MSN),       |    set dummy LSN, 
+                           //  remains in 8 bit mode               |    change to 8 bit mode       |  remains in 4 bit mode
+      wait_ms(15);         //                           
+     
+      _writeNibble(0x3);   //  set 8 bit mode and dummy LSN,       | set 8 bit mode and dummy LSN, |    set 8bit mode (MSN), 
+                           //  remains in 8 bit mode               |   remains in 8 bit mode       |  remains in 4 bit mode
+      wait_ms(15);         // 
+    
+      _writeNibble(0x3);   //  set 8 bit mode and dummy LSN,       | set 8 bit mode and dummy LSN, |    set dummy LSN, 
+                           //  remains in 8 bit mode               |   remains in 8 bit mode       |  change to 8 bit mode
+      wait_ms(15);         // 
+
+      // Controller is now in 8 bit mode
+
+      _writeNibble(0x2);   // Change to 4-bit mode (MSN), the LSN is undefined dummy
+      wait_us(40);         // most instructions take 40us
+
+      // Controller is now in 4-bit mode
+      // Note: 4/8 bit mode is ignored for most native SPI and I2C devices. They dont use the parallel bus.
+      //       However, _writeNibble() method is void anyway for native SPI and I2C devices.
+    }      
+   
+    // Device specific initialisations: DC/DC converter to generate VLCD or VLED, number of lines etc
+    switch (_ctrl) {
+
+      case KS0073:
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD12x1:                                
+            case LCD16x1:                                            
+            case LCD20x1:
+            case LCD24x1:
+//            case LCD32x1:        // EXT pin is High, extension driver needed
+//            case LCD40x1:        // EXT pin is High, extension driver needed                        
+              _function  = 0x02;    // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (1-line mode, N=1 2-line mode)
+                                    //   RE=0  (Dis. Extended Regs, special mode for KS0073)
+                                    //   DH=1  (Disp shift enable, special mode for KS0073)                                
+                                    //   REV=0 (Reverse normal, special mode for KS0073)
+                                    
+              _function_1 = 0x04;   // Function set 001 DL N RE(1) BE LP (Ext Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (1-line mode, N=1 2-line mode)
+                                    //   RE=1  (Ena Extended Regs, special mode for KS0073)
+                                    //   BE=0  (Blink Enable, CG/SEG RAM, special mode for KS0073)                                
+                                    //   LP=0  (LP=1 Low power mode, LP=0 Normal)
+
+              _function_x = 0x00;   // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                    //    NW=0  (1,2 line), NW=1 (4 Line, special mode for KS0073)                                
+              break;                                
+
+//            case LCD12x3D:         // Special mode for KS0073, KS0078 and PCF21XX            
+//            case LCD12x3D1:        // Special mode for KS0073, KS0078 and PCF21XX            
+            case LCD12x4D:         // Special mode for KS0073, KS0078 and PCF21XX            
+//            case LCD16x3D:         // Special mode for KS0073, KS0078             
+//            case LCD16x4D:         // Special mode for KS0073, KS0078            
+            case LCD20x4D:         // Special mode for KS0073, KS0078            
+              _function  = 0x02;    // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (dont care for 4 line mode)              
+                                    //   RE=0  (Dis. Extended Regs, special mode for KS0073)
+                                    //   DH=1  (Disp shift enable, special mode for KS0073)                                
+                                    //   REV=0 (Reverse normal, special mode for KS0073)
+                                    
+              _function_1 = 0x04;   // Function set 001 DL N RE(1) BE LP (Ext Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (1-line mode), N=1 (2-line mode)
+                                    //   RE=1  (Ena Extended Regs, special mode for KS0073)
+                                    //   BE=0  (Blink Enable, CG/SEG RAM, special mode for KS0073)                                
+                                    //   LP=0  (LP=1 Low power mode, LP=0 Normal)                                    
+
+              _function_x = 0x01;   // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                    //    NW=0  (1,2 line), NW=1 (4 Line, special mode for KS0073)                                
+              break;                                
+
+
+            case LCD16x3G:            // Special mode for ST7036                        
+//            case LCD24x3D:         // Special mode for KS0078
+//            case LCD24x3D1:        // Special mode for KS0078
+            case LCD24x4D:         // Special mode for KS0078
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+            default:
+              // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)            
+              _function  = 0x0A;    // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=1  (2-line mode), N=0 (1-line mode)
+                                    //   RE=0  (Dis. Extended Regs, special mode for KS0073)
+                                    //   DH=1  (Disp shift enable, special mode for KS0073)                                
+                                    //   REV=0 (Reverse normal, special mode for KS0073)
+                                    
+              _function_1 = 0x0C;   // Function set 001 DL N RE(1) BE LP (Ext Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=1  (2 line mode), N=0 (1-line mode)
+                                    //   RE=1  (Ena Extended Regs, special mode for KS0073)
+                                    //   BE=0  (Blink Enable, CG/SEG RAM, special mode for KS0073)                   
+                                    //   LP=0  (LP=1 Low power mode, LP=0 Normal)                                                                                     
+
+              _function_x = 0x00;   // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                    //   NW=0  (1,2 line), NW=1 (4 Line, special mode for KS0073)                                
+              break;
+          } // switch type
+
+          // init special features
+          _writeCommand(0x20 | _function_1);// Function set 001 DL N RE(1) BE LP (Ext Regs)
+                                           //   DL=0 (4 bits bus), DL=1 (8 bits mode)            
+                                           //    N=0 (1 line mode), N=1 (2 line mode)
+                                           //   RE=1 (Ena Extended Regs, special mode for KS0073)
+                                           //   BE=0 (Blink Enable/Disable, CG/SEG RAM, special mode for KS0073)                                
+                                           //   LP=0  (LP=1 Low power mode, LP=0 Normal)                                                                                                                                
+
+          _writeCommand(0x08 | _function_x); // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                           //   FW=0  (5-dot font, special mode for KS0073)
+                                           //   BW=0  (Cur BW invert disable, special mode for KS0073)
+                                           //   NW=0  (1,2 Line), NW=1 (4 line, special mode for KS0073)                                
+
+          _writeCommand(0x10);             // Scroll/Shift set 0001 DS/HS4 DS/HS3 DS/HS2 DS/HS1 (Ext Regs)
+                                           //   Dotscroll/Display shift enable (Special mode for KS0073)
+
+          _writeCommand(0x80);             // Scroll Quantity set 1 0 SQ5 SQ4 SQ3 SQ2 SQ1 SQ0 (Ext Regs)
+                                           //   Scroll quantity (Special mode for KS0073)
+
+          _writeCommand(0x20 | _function); // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                           //   DL=0  (4 bits bus), DL=1 (8 bits mode)             
+                                           //    N=0  (1 line mode), N=1 (2 line mode)
+                                           //   RE=0  (Dis. Extended Regs, special mode for KS0073)
+                                           //   DH=1  (Disp shift enable/disable, special mode for KS0073)                                
+                                           //   REV=0 (Reverse/Normal, special mode for KS0073)
+          break; // case KS0073 Controller
+
+
+      case KS0078:
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2B is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:                                            
+//            case LCD20x1:
+            case LCD24x1:
+              _function  = 0x02;    // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (1 line mode), N=1 (2 line mode)
+                                    //   RE=0  (Dis. Extended Regs, special mode for KS0078)
+                                    //   DH=1  (Disp shift enable, special mode for KS0078)                                
+                                    //   REV=0 (Reverse normal, special mode for KS0078)
+                                    
+              _function_1 = 0x04;   // Function set 001 DL N RE(1) BE 0 (Ext Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (1 line mode), N=1 (2 line mode)
+                                    //   RE=1  (Ena Extended Regs, special mode for KS0078)
+                                    //   BE=0  (Blink Enable, CG/SEG RAM, special mode for KS0078)                                
+                                    //      0 
+
+              _function_x = 0x00;   // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                    //    NW=0  (1,2 line), NW=1 (4 Line, special mode for KS0078)                                
+              break;                                
+
+//            case LCD12x3D:         // Special mode for KS0073, KS0078 and PCF21XX            
+//            case LCD12x3D1:        // Special mode for KS0073, KS0078 and PCF21XX            
+//            case LCD12x4D:         // Special mode for KS0073, KS0078 and PCF21XX            
+//            case LCD16x3D:         // Special mode for KS0073, KS0078             
+//            case LCD16x4D:         // Special mode for KS0073, KS0078            
+//            case LCD20x4D:         // Special mode for KS0073, KS0078            
+//            case LCD24x3D:         // Special mode for KS0078
+//            case LCD24x3D1:        // Special mode for KS0078
+            case LCD24x4D:         // Special mode for KS0078
+              _function  = 0x02;    // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (dont care for 4 line mode)              
+                                    //   RE=0  (Dis. Extended Regs, special mode for KS0078)
+                                    //   DH=1  (Disp shift enable, special mode for KS0078)                                
+                                    //   REV=0 (Reverse normal, special mode for KS0078)
+                                    
+              _function_1 = 0x04;   // Function set 001 DL N RE(1) BE 0 (Ext Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=0  (1 line mode), N=1 (2 line mode)
+                                    //   RE=1  (Ena Extended Regs, special mode for KS0078)
+                                    //   BE=0  (Blink Enable, CG/SEG RAM, special mode for KS0078)                                
+                                    //      0 
+
+              _function_x = 0x01;   // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                    //    NW=0  (1,2 line), NW=1 (4 Line, special mode for KS0078)                                
+              break;                                
+
+            case LCD16x3G:            // Special mode for ST7036                        
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+              
+            default:
+              // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)            
+              _function  = 0x0A;    // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=1  (1 line mode), N=1 (2 line mode)
+                                    //   RE=0  (Dis. Extended Regs, special mode for KS0078)
+                                    //   DH=1  (Disp shift enable, special mode for KS0078)                                
+                                    //   REV=0 (Reverse normal, special mode for KS0078)
+                                    
+              _function_1 = 0x0C;   // Function set 001 DL N RE(1) BE 0 (Ext Regs)
+                                    //   DL=0  (4 bits bus)             
+                                    //    N=1  (1 line mode), N=1 (2 line mode)
+                                    //   RE=1  (Ena Extended Regs, special mode for KS0078)
+                                    //   BE=0  (Blink Enable, CG/SEG RAM, special mode for KS0078)                                
+                                    //      0 
+
+              _function_x = 0x00;   // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                    //   NW=0  (1,2 line), NW=1 (4 Line, special mode for KS0078)                                
+              break;
+          } // switch type
+
+          // init special features
+          _writeCommand(0x20 | _function_1);// Function set 001 DL N RE(1) BE 0 (Ext Regs)
+                                           //   DL=0 (4 bits bus), DL=1 (8 bits mode)            
+                                           //    N=0 (1 line mode), N=1 (2 line mode)
+                                           //   RE=1 (Ena Extended Regs, special mode for KS0078)
+                                           //   BE=0 (Blink Enable/Disable, CG/SEG RAM, special mode for KS0078)                                
+                                           //      0 
+
+          _writeCommand(0x08 | _function_x); // Ext Function set 0000 1 FW BW NW (Ext Regs)
+                                           //   FW=0  (5-dot font, special mode for KS0078)
+                                           //   BW=0  (Cur BW invert disable, special mode for KS0078)
+                                           //   NW=0  (1,2 Line), NW=1 (4 line, special mode for KS0078)                                
+
+          _writeCommand(0x10);             // Scroll/Shift set 0001 DS/HS4 DS/HS3 DS/HS2 DS/HS1 (Ext Regs)
+                                           //   Dotscroll/Display shift enable (Special mode for KS0078)
+
+          _writeCommand(0x80);             // Scroll Quantity set 1 0 SQ5 SQ4 SQ3 SQ2 SQ1 SQ0 (Ext Regs)
+                                           //   Scroll quantity (Special mode for KS0078)
+
+          _writeCommand(0x20 | _function); // Function set 001 DL N RE(0) DH REV (Std Regs)
+                                           //   DL=0  (4 bits bus), DL=1 (8 bits mode)             
+                                           //    N=0  (1 line mode), N=1 (2 line mode)
+                                           //   RE=0  (Dis. Extended Regs, special mode for KS0078)
+                                           //   DH=1  (Disp shift enable/disable, special mode for KS0078)                                
+                                           //   REV=0 (Reverse/Normal, special mode for KS0078)
+          break; // case KS0078 Controller
+              
+      case ST7032_3V3:
+          // ST7032 controller: Initialise Voltage booster for VLCD. VDD=3V3
+      case ST7032_5V:
+          // ST7032 controller: Disable Voltage booster for VLCD. VDD=5V
+
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2B is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:                                            
+//            case LCD20x1:                    
+            case LCD24x1:
+              _function = 0x00;       // FUNCTION SET 0 0 1 DL=0 (4 bit), N=0 (1-line display mode), F=0 (5*7dot), 0, IS
+                                      // Note: 4 bit mode is ignored for native SPI and I2C devices
+                                      // Saved to allow switch between Instruction sets at later time
+              break;  
+
+            case LCD12x3D:            // Special mode for KS0078 and PCF21XX
+            case LCD12x3D1:           // Special mode for KS0078 and PCF21XX
+            case LCD12x4D:            // Special mode for KS0078 and PCF21XX
+            case LCD16x3G:            // Special mode for ST7036                        
+            case LCD24x4D:            // Special mode for KS0078
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+            default:
+              // All other LCD types are initialised as 2 Line displays        
+              _function = 0x08;       // FUNCTION SET 0 0 1 DL=0 (4 bit), N=1 (2-line display mode), F=0 (5*7dot), 0, IS              
+                                      // Note: 4 bit mode is ignored for native SPI and I2C devices
+                                      // Saved to allow switch between Instruction sets at later time
+              break;                                                                        
+          } // switch type    
+                                     
+          // init special features 
+          _writeCommand(0x20 | _function | 0x01);           // Set function,  0 0 1 DL N F 0 IS=1 Select Instr Set = 1              
+
+          _writeCommand(0x1C);                              // Internal OSC frequency adjustment Framefreq=183HZ, Bias will be 1/4 (Instr Set=1)
+
+          _contrast = LCD_ST7032_CONTRAST;              
+          _writeCommand(0x70 | (_contrast & 0x0F));         // Set Contrast Low bits, 0 1 1 1 C3 C2 C1 C0 (IS=1)
+
+
+          if (_ctrl == ST7032_3V3) {
+//            _icon_power = 0x04;                             // Icon display off, Booster circuit is turned on  (IS=1)
+            _icon_power = 0x0C;                             // Icon display on, Booster circuit is turned on  (IS=1)            
+                                                            // Saved to allow contrast change at later time
+          }
+          else { 
+//            _icon_power = 0x00;                             // Icon display off, Booster circuit is turned off  (IS=1)
+            _icon_power = 0x08;                             // Icon display on, Booster circuit is turned off  (IS=1)            
+                                                            // Saved to allow contrast change at later time
+          }
+          _writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03));  // Set Icon, Booster and Contrast High bits, 0 1 0 1 Ion Bon C5 C4 (IS=1)
+          wait_ms(10);            // Wait 10ms to ensure powered up
+          
+          _writeCommand(0x68 | (LCD_ST7032_RAB & 0x07));      // Voltage follower, 0 1 1 0 FOn=1, Ampl ratio Rab2=1, Rab1=0, Rab0=0  (IS=1)
+          wait_ms(10);            // Wait 10ms to ensure powered up
+          
+          _writeCommand(0x20 | _function);                  // Select Instruction Set = 0
+
+          break; // case ST7032_3V3 Controller
+                 // case ST7032_5V Controller
+
+      case ST7036_3V3:
+          // ST7036 controller: Initialise Voltage booster for VLCD. VDD=3V3
+          // Note: supports 1,2 (LCD_T_A) or 3 lines (LCD_T_G)
+      case ST7036_5V:
+          // ST7036 controller: Disable Voltage booster for VLCD. VDD=5V
+          // Note: supports 1,2 (LCD_T_A) or 3 lines (LCD_T_G)
+                    
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2D is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:   
+            case LCD24x1:                                                                         
+              _function = 0x00;     // Set function, 0 0 1 DL=0 (4-bit Databus), N=0 (1 Line), DH=0 (5x7font), IS2, IS1 (Select Instruction Set)
+                                    // Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    // Saved to allow switch between Instruction sets at later time
+              
+              _bias_lines = 0x04;   // Bias: 1/5, 1 or 2-Lines LCD 
+              break;  
+
+//            case LCD12x3G:          // Special mode for ST7036
+            case LCD16x3G:          // Special mode for ST7036
+              _function = 0x08;     // Set function, 0 0 1 DL=0 (4-bit Databus), N=1 (2 Line), DH=0 (5x7font), IS2,IS1 (Select Instruction Set)              
+                                    // Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    // Saved to allow switch between Instruction sets at later time
+              
+              _bias_lines = 0x05;   // Bias: 1/5, 3-Lines LCD           
+              break;  
+
+//            case LCD12x3D1:           // Special mode for KS0078 and PCF21XX
+//            case LCD16x3D1:           // Special mode for SSD1803
+            case LCD12x4D:            // Special mode for PCF2116
+            case LCD24x4D:            // Special mode for KS0078
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+            default:
+              // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)       
+              _function = 0x08;     // Set function, 0 0 1 DL=0 (4-bit Databus), N=1 (2 Line), DH=0 (5x7font), IS2,IS1 (Select Instruction Set)
+                                    // Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    // Saved to allow switch between Instruction sets at later time
+              
+              _bias_lines = 0x04;   // Bias: 1/5, 1 or 2-Lines LCD 
+              break;                
+          } // switch type
+
+
+          // init special features 
+          _writeCommand(0x20 | _function | 0x01);   // Set function, IS2,IS1 = 01 (Select Instr Set = 1)
+          _writeCommand(0x10 | _bias_lines);        // Set Bias and 1,2 or 3 lines (Instr Set 1)
+
+          _contrast = LCD_ST7036_CONTRAST;
+          _writeCommand(0x70 | (_contrast & 0x0F)); // Set Contrast, 0 1 1 1 C3 C2 C1 C0 (Instr Set 1)
+                           
+          if (_ctrl == ST7036_3V3) {
+            _icon_power = 0x0C;                       // Set Icon, Booster, Contrast High bits, 0 1 0 1 Ion=1 Bon=1 C5 C4 (Instr Set 1)            
+//            _icon_power = 0x04;                       // Set Icon, Booster, Contrast High bits, 0 1 0 1 Ion=0 Bon=1 C5 C4 (Instr Set 1)
+                                                      // Saved to allow contrast change at later time
+          } 
+          else {
+            _icon_power = 0x08;                       // Set Icon, Booster, Contrast High bits, 0 1 0 1 Ion=1 Bon=0 C5 C4 (Instr Set 1)             
+//            _icon_power = 0x00;                       // Set Icon, Booster, Contrast High bits, 0 1 0 1 Ion=0 Bon=0 C5 C4 (Instr Set 1)                         
+          }
+          
+          _writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03));   // Set Contrast C5, C4 (Instr Set 1)
+          wait_ms(10);            // Wait 10ms to ensure powered up
+
+          _writeCommand(0x68 | (LCD_ST7036_RAB & 0x07));  // Voltagefollower On = 1, Ampl ratio Rab2, Rab1, Rab0 = 1 0 1 (Instr Set 1)
+          wait_ms(10);            // Wait 10ms to ensure powered up
+
+          _writeCommand(0x20 | _function);          // Set function, IS2,IS1 = 00 (Select Instruction Set = 0)
+         
+          break; // case ST7036_3V3 Controller
+                 // case ST7036_5V Controller
+
+      case ST7070:                   
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2D is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:   
+            case LCD24x1:                                                                         
+              _function = dl | 0x00;      // Set function, 0 0 1 DL=0 (4-bit Databus), N=0 (1 Line), EXT=0, x, x 
+                                          // Note: 4 bit mode is NOT ignored for native SPI !
+                                          // Saved to allow switch between Instruction sets at later time
+              break;  
+
+//            case LCD12x3D1:           // Special mode for KS0078 and PCF21XX
+//            case LCD16x3D1:           // Special mode for SSD1803
+            case LCD12x4D:            // Special mode for PCF2116
+            case LCD24x4D:            // Special mode for KS0078
+//            case LCD12x3G:          // Special mode for ST7036
+            case LCD16x3G:          // Special mode for ST7036           
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+            default:
+              // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)       
+              _function = dl | 0x08;   // Set function, 0 0 1 DL, N=1 (2 Line), EXT=0, x, x                                                                 
+                                       // Note: 4 bit mode is NOT ignored for native SPI !
+                                       // Saved to allow switch between Instruction sets at later time
+              break;                
+          } // switch type
+
+//          _writeCommand(0x00);                      // NOP, make sure to sync SPI
+          
+          // init special features                                                    
+          _writeCommand(0x20 | _function | 0x04);   // Set function, 0 0 1 DL N EXT=1 x x (Select Instr Set = 1)
+
+          _writeCommand(0x04 | 0x00);               // Set Bias resistors  0 0 0 0 0 1 Rb1,Rb0= 0 0 (Extern Res) (Instr Set 1)
+
+          _writeCommand(0x40 | 0x00);               // COM/SEG directions 0 1 0 0 C1, C2, S1, S2  (Instr Set 1)
+                                                    // C1=1: Com1-8 -> Com8-1;   C2=1: Com9-16 -> Com16-9
+                                                    // S1=1: Seg1-40 -> Seg40-1; S2=1: Seg41-80 -> Seg80-41                                                    
+          
+          _writeCommand(0x20 | _function);          // Set function, EXT=0 (Select Instr Set = 0)
+         
+          break; // case ST7070 Controller
+         
+      case SSD1803_3V3:
+          // SSD1803 controller: Initialise Voltage booster for VLCD. VDD=3V3
+          // Note: supports 1,2, 3 or 4 lines
+//      case SSD1803_5V:
+          // SSD1803 controller: No Voltage booster for VLCD. VDD=5V
+                    
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2D is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:   
+            case LCD24x1:                                                                         
+              _function = 0x00;     //  Set function 0 0 1 DL N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=0 1 Line / 3 Line
+                                    //    DH=0 Double Height disable 
+                                    //    IS=0
+          
+              _function_1 = 0x02;   // Set function, 0 0 1 DL N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=0 1 Line / 3 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803
+                                    //   REV=0 Reverse off, special feature of SSD1803            
+                        
+              _lines = 0x00;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=0 1-Line LCD (N=0)
+              break;  
+
+            case LCD12x3D:          // Special mode for KS0078 and PCF21XX                                  
+//            case LCD12x3D1:           // Special mode for KS0078 and PCF21XX            
+            case LCD16x3D:          // Special mode for KS0078
+//            case LCD16x3D1:           // Special mode for SSD1803
+//            case LCD20x3D:            // Special mode for SSD1803
+              _function = 0x00;     //  Set function 0 0 1 DL N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=0 1 Line / 3 Line
+                                    //    DH=0 Double Height disable 
+                                    //    IS=0
+          
+              _function_1 = 0x02;   // Set function, 0 0 1 DL N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=0 1 Line / 3 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803
+                                    //   REV=0 Reverse off, special feature of SSD1803            
+                        
+              _lines = 0x00;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=1 3-Line LCD (N=0)
+              break;  
+
+            case LCD20x4D:          // Special mode for SSD1803
+              _function = 0x08;     //  Set function 0 0 1 DL N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=1 4 Line
+                                    //    DH=0 Double Height disable 
+                                    //    IS=0
+          
+              _function_1 = 0x0A;   // Set function, 0 0 1 DL N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=1 4 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803
+                                    //   REV=0 Reverse off, special feature of SSD1803            
+                        
+              _lines = 0x01;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=1 4-Line LCD (N=1)
+              break;  
+
+            case LCD16x3G:          // Special mode for ST7036            
+            case LCD24x4D:          // Special mode for KS0078
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+            default:
+              // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)       
+              _function = 0x08;     //  Set function 0 0 1 DL N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=1 2 line / 4 Line
+                                    //    DH=0 Double Height disable 
+                                    //    RE=0
+                                    //    IS=0
+          
+              _function_1 = 0x0A;   // Set function, 0 0 1 DL N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 4-bit Databus,
+                                    //         Note: 4 bit mode is ignored for native SPI and I2C devices
+                                    //     N=1 2 line / 4 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803
+                                    //    RE=1
+                                    //   REV=0 Reverse off, special feature of SSD1803            
+                        
+              _lines = 0x00;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=0 2-Line LCD (N=1)
+              break;                
+          } // switch type
+
+
+          // init special features 
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 DL N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+          
+          _writeCommand(0x06);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=1 COM1-32, BDS=0 SEG100-1    "Bottom View" (Ext Instr Set)
+//          _writeCommand(0x05);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=0 COM32-1, BDS=1 SEG1-100    "Top View" (Ext Instr Set)          
+          wait_ms(5);                               // Wait to ensure completion or SSD1803 fails to set Top/Bottom after reset..
+         
+          _writeCommand(0x08 | _lines);             // Set ext function 0 0 0 0 1 FW BW NW 1,2,3 or 4 lines (Ext Instr Set)
+
+          _writeCommand(0x10);                      // Double Height and Bias, 0 0 0 1 UD2=0, UD1=0, BS1=0 Bias 1/5, DH=0 (Ext Instr Set)
+
+//          _writeCommand(0x76);                      // Set TC Control, 0 1 1 1 0 1 1 0 (Ext Instr Set)
+//          _writeData(0x02);                         // Set TC data,    0 0 0 0 0 TC2,TC1,TC0 = 0 1 0 (Ext Instr Set)
+
+          _writeCommand(0x20 | _function | 0x01);   // Set function, 0 0 1 DL N DH RE(0) IS=1 Select Instruction Set 1
+                                                    // Select Std Instr set, Select IS=1  
+
+          _contrast = LCD_SSD1_CONTRAST;
+          _writeCommand(0x70 | (_contrast & 0x0F)); // Set Contrast 0 1 1 1 C3, C2, C1, C0 (Instr Set 1)
+                           
+//          _icon_power = 0x04;                       // Icon off, Booster on (Instr Set 1)
+          _icon_power = 0x0C;                       // Icon on, Booster on (Instr Set 1)          
+                                                    // Saved to allow contrast change at later time
+          _writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03));   // Set Power, Icon and Contrast, 0 1 0 1 Ion Bon C5 C4 (Instr Set 1)
+          wait_ms(10);            // Wait 10ms to ensure powered up
+
+          _writeCommand(0x68 | (LCD_SSD1_RAB & 0x07));  // Set Voltagefollower 0 1 1 0 Don = 1, Ampl ratio Rab2, Rab1, Rab0 = 1 1 0  (Instr Set 1)
+          wait_ms(10);            // Wait 10ms to ensure powered up
+
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 DL N BE RE(1) REV 
+                                                    // Select Extended Instruction Set 1
+          _writeCommand(0x10);                      // Shift/Scroll enable, 0 0 0 1 DS4/HS4 DS3/HS3 DS2/HS2 DS1/HS1  (Ext Instr Set 1)
+
+
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0
+         
+          break; // case SSD1803 Controller
+
+          
+      // Note1: The PCF21XX family of controllers has several types that dont have an onboard voltage generator for V-LCD.
+      //        You must supply this LCD voltage externally and not try to enable VGen. 
+      // Note2: The early versions of PCF2116 controllers (eg PCF2116C) can not generate sufficiently negative voltage for the LCD at a VDD of 3V3. 
+      //        You must supply this voltage externally and not enable VGen or you must use a higher VDD (e.g. 5V) and enable VGen.
+      //        More recent versions of the controller (eg PCF2116K) have an improved VGen that will work with 3V3.
+      // Note3: See datasheet, PCF2116 and other types provide a V0 pin to control the LCD contrast voltage that is provided by VGen. This pins allows 
+      //        contrast control similar to that of pin 3 on the standard 14pin LCD module connector.
+      //        You can disable VGen by connecting Vo to VDD. VLCD will then be used directly as LCD voltage.
+      // Note4: PCF2113 and PCF2119 are different wrt to VLCD generator! There is no V0 pin. The contrast voltage is software controlled by setting the VA and VB registers.
+      //        Vgen is automatically switched off when the contrast voltage VA or VB is set to 0x00. Note that certain limits apply to allowed values for VA and VB.                    
+      // Note5: See datasheet, members of the PCF21XX family support different numbers of rows/columns. Not all can support 3 or 4 rows.
+      // Note6: See datasheet, the PCF21XX-C and PCF21XX-K use a non-standard character set. This may result is strange looking text when not corrected..
+
+      case PCF2103_3V3:
+          // PCF2103 controller: No Voltage generator for VLCD, VDD=3V3..5V, VLCD input controls contrast voltage.                 
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD24x1:                    
+              _function = 0x00;       //FUNCTION SET 0 0 1 DL=0 4-bit, 0, M=0 1-line/24 chars display mode, 0, H=0 
+                                      //Note: 4 bit mode is ignored for I2C mode
+              break;  
+
+//            case LCD12x1D:            //Special mode for PCF21XX, Only top line used
+            case LCD12x2:
+              _function = 0x04;       //FUNCTION SET 0 0 1 DL=0 4-bit, 0, M=1 2-line/12 chars display mode, 0, H=0
+                                      //Note: 4 bit mode is ignored for I2C mode
+              break;  
+              
+            default:
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+            
+          } // switch type    
+
+          _writeCommand(0x20 | _function | 0x01);          // Set function, Select Instr Set = 1              
+          wait_ms(10);            // Wait 10ms to ensure powered up                                                    
+
+// Note: Display from GA628 shows 12 chars. This is actually the right half of a 24x1 display. The commons have been connected in reverse order.
+          _writeCommand(0x05);                             // Display Conf Set         0000 0, 1, P=0, Q=1               (Instr. Set 1)
+                                                        
+          _writeCommand(0x02);                             // Screen Config            0000 001, L=0  (Instr. Set 1)
+          _writeCommand(0x08);                             // ICON Conf                0000 1, IM=0 (Char mode), IB=0 (no Icon blink), 0 (Instr. Set 1) 
+
+          _writeCommand(0x20 | _function);                 // Set function, Select Instr Set = 0             
+          
+#if(0)
+          // Select CG RAM
+          _writeCommand(0x40); //Set CG-RAM address, 8 sequential locations needed per UDC
+          // Store UDC/Icon pattern: 
+          //   3 x 8 rows x 5 bits = 120 bits for Normal pattern (UDC 0..2) and
+          //   3 x 8 rows x 5 bits = 120 bits for Blink pattern (UDC 4..6) 
+          for (int i=0; i<(8 * 8); i++) {
+//            _writeData(0x1F);  // All On
+            _writeData(0x00);  // All Off            
+          }
+#endif
+          break; // case PCF2103_3V3 Controller
+
+      case PCF2113_3V3:
+          // PCF2113 controller: Initialise Voltage booster for VLCD. VDD=3V3. VA and VB control contrast.
+          // Initialise Display configuration
+          switch (_type) {
+//            case LCD12x1:                                
+//              _function = 0x02;       // FUNCTION SET 0 0 1 DL=0 4 bit, 0, M=0 1-line/12 chars display mode, SL=1, IS=0
+                                      // Note: 4 bit mode is ignored for I2C mode
+            case LCD24x1:                    
+              _function = 0x00;       // FUNCTION SET 0 0 1 DL=0 4 bit, 0, M=0 1-line/24 chars display mode, SL=0, IS=0            
+                                      // Note: 4 bit mode is ignored for I2C mode
+              break;  
+
+            case LCD12x2:                    
+              _function = 0x04;       // FUNCTION SET 0 0 1 DL=0 4 bit, 0, M=1 2-line/12 chars display mode, SL=0, IS=0            
+              break;  
+             
+            default:
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+                         
+          } // switch type    
+
+          // Init special features
+          _writeCommand(0x20 | _function | 0x01);          // Set function, Select Instr Set = 1              
+
+          _writeCommand(0x04);                             // Display Conf Set         0000 0, 1, P=0, Q=0               (Instr. Set 1)
+          _writeCommand(0x10);                             // Temp Compensation Set    0001 0, 0, TC1=0, TC2=0           (Instr. Set 1)
+//          _writeCommand(0x42);                             // HV GEN                   0100 S1=1, S2=0 (2x multiplier)   (Instr. Set 1)
+          _writeCommand(0x40 | (LCD_PCF2_S12 & 0x03));     // HV Gen                   0100 S1=1, S2=0 (2x multiplier)   (Instr. Set 1)
+          
+          _contrast = LCD_PCF2_CONTRAST;              
+          _writeCommand(0x80 | 0x00 | (_contrast & 0x3F));      // VLCD_set (Instr. Set 1)  1, V=0, VA=contrast
+          _writeCommand(0x80 | 0x40 | (_contrast & 0x3F));      // VLCD_set (Instr. Set 1)  1, V=1, VB=contrast
+          wait_ms(10);            // Wait 10ms to ensure powered up
+          
+          _writeCommand(0x02);                             // Screen Config            0000 001, L=0  (Instr. Set 1)
+          _writeCommand(0x08);                             // ICON Conf                0000 1, IM=0 (Char mode), IB=0 (no icon blink) DM=0 (no direct mode) (Instr. Set 1) 
+
+          _writeCommand(0x20 | _function);                 // Set function, Select Instr Set = 0             
+
+          break; // case PCF2113_3V3 Controller
+
+
+//      case PCF2113_5V:
+          // PCF2113 controller: No Voltage generator for VLCD. VDD=5V. Contrast voltage controlled by VA or VB.
+//@TODO                            
+
+
+      case PCF2116_3V3:
+          // PCF2116 controller: Voltage generator for VLCD. VDD=5V. V0 controls contrast voltage.                 
+          // Initialise Display configuration
+          switch (_type) {
+//            case LCD12x1:
+//            case LCD12x2:                                                                            
+            case LCD24x1:                    
+              _writeCommand(0x22);    //FUNCTION SET 0 0 1 DL=0 4-bit, N=0/M=0 1-line/24 chars display mode, G=1 Vgen on, 0 
+                                      //Note: 4 bit mode is ignored for I2C mode
+              wait_ms(10);            // Wait 10ms to ensure powered up                                                    
+              break;  
+
+            case LCD12x3D:            // Special mode for KS0078 and PCF21XX                            
+            case LCD12x3D1:           // Special mode for PCF21XX                     
+            case LCD12x4D:            // Special mode for PCF21XX:
+              _writeCommand(0x2E);    //FUNCTION SET 0 0 1 DL=0 4-bit, N=1/M=1 4-line/12 chars display mode, G=1 VGen on, 0                               
+                                      //Note: 4 bit mode is ignored for I2C mode              
+              wait_ms(10);            // Wait 10ms to ensure powered up                                                    
+              break;  
+
+            case LCD24x2:
+              _writeCommand(0x2A);    //FUNCTION SET 0 0 1 DL=0 4-bit, N=1/M=0 2-line/24 chars display mode, G=1 VGen on, 0
+                                      //Note: 4 bit mode is ignored for I2C mode
+              wait_ms(10);            // Wait 10ms to ensure powered up   
+              break;  
+              
+            default:
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+            
+          } // switch type    
+
+          break; // case PCF2116_3V3 Controller
+
+
+//Experimental for cellphone 3-line display, SA=0x74, No Ack supported, Character set C or K, DL = 8 bit, N=0,M=1 (reserved mode !!), external VLCD -2V5
+//@TODO                            
+      case PCF2116_5V:
+          // PCF2116 controller: No Voltage generator for VLCD. VDD=5V. V0 controls contrast voltage.                           
+          // Initialise Display configuration
+          switch (_type) {
+//            case LCD12x1:
+//            case LCD12x2:                                                                            
+//            case LCD24x1:                    
+//              _writeCommand(0x20);    //FUNCTION SET 0 0 1 DL=0 4-bit, N=0/M=0 1-line/24 chars display mode, G=0 no Vgen, 0 
+                                      //Note: 4 bit mode is ignored for I2C mode
+//              wait_ms(10);            // Wait 10ms to ensure powered up                                                    
+//              break;  
+
+            case LCD12x3D:            // Special mode for KS0078 and PCF21XX                            
+            case LCD12x3D1:           // Special mode for PCF21XX                     
+            case LCD12x4D:            // Special mode for PCF21XX:
+//              _writeCommand(0x34);    //FUNCTION SET 8 bit, N=0/M=1 4-line/12 chars display mode      OK
+//              _writeCommand(0x24);    //FUNCTION SET 4 bit, N=0/M=1 4-line/12 chars display mode      OK                                            
+              _writeCommand(0x2C);    //FUNCTION SET 0 0 1 DL=0 4-bit, N=1/M=1 4-line/12 chars display mode, G=0 no Vgen, 0  OK       
+                                      //Note: 4 bit mode is ignored for I2C mode              
+              wait_ms(10);            // Wait 10ms to ensure powered up                                                    
+              break;  
+
+//            case LCD24x2:
+//              _writeCommand(0x28);    //FUNCTION SET 4 bit, N=1/M=0 2-line/24 chars display mode
+                                      //Note: 4 bit mode is ignored for I2C mode
+//              wait_ms(10);            // Wait 10ms to ensure powered up   
+//              break;  
+              
+            default:
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+            
+          } // switch type    
+
+          break; // case PCF2116_5V Controller
+
+      case PCF2119_3V3:
+          // PCF2119 controller: Initialise Voltage booster for VLCD. VDD=3V3. VA and VB control contrast.
+          // Note1: See datasheet, the PCF2119 supports icons and provides separate constrast control for Icons and characters.
+          // Note2: Vgen is switched off when the contrast voltage VA or VB is set to 0x00.
+                  
+//POR or Hardware Reset should be applied
+          wait_ms(10);            // Wait 10ms to ensure powered up   
+
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:
+//            case LCD12x1:
+            case LCD16x1:           
+              _function = 0x02;       // FUNCTION SET 0 0 1 DL=0 4-bit, 0 , M=0 1-line/16 chars display mode, SL=1
+                                      // Note: 4 bit mode is ignored for I2C mode
+              break;  
+            
+            case LCD24x1:                    
+//            case LCD32x1:                                
+              _function = 0x00;       // FUNCTION SET 0 0 1 DL=0 4-bit, 0 , M=0 1-line/32 chars display mode, SL=0
+                                      // Note: 4 bit mode is ignored for I2C mode
+              break;  
+
+            case LCD8x2:
+//            case LCD12x2:            
+            case LCD16x2:
+              _function = 0x04;       // FUNCTION SET 0 0 1 DL=0 4-bit, 0, M=1 2-line/16 chars display mode, SL=0
+                                      // Note: 4 bit mode is ignored for I2C mode
+              break;  
+             
+            default:
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+            
+          } // switch type    
+
+          // Init special features 
+          _writeCommand(0x20 | _function | 0x01);           // Set function, Select Instruction Set = 1              
+
+          _writeCommand(0x04);    // DISP CONF SET (Instr. Set 1)   0000, 0, 1, P=0, Q=0 
+          _writeCommand(0x10);    // TEMP CTRL SET (Instr. Set 1)   0001, 0, 0, TC1=0, TC2=0
+//          _writeCommand(0x42);    // HV GEN (Instr. Set 1)          0100, 0, 0, S1=1, S2=0 (2x multiplier)
+          _writeCommand(0x40 | (LCD_PCF2_S12 & 0x03));      // HV GEN (Instr. Set 1)          0100, 0, 0, S1=1, S2=0 (2x multiplier)
+
+          _contrast = LCD_PCF2_CONTRAST;              
+          _writeCommand(0x80 | 0x00 | (_contrast & 0x3F));      // VLCD_set (Instr. Set 1)    V=0, VA=contrast
+          _writeCommand(0x80 | 0x40 | (_contrast & 0x3F));      // VLCD_set (Instr. Set 1)    V=1, VB=contrast
+          wait_ms(10);            // Wait 10ms to ensure powered up
+          
+          _writeCommand(0x02);    // SCRN CONF (Instr. Set 1)    L=0
+          _writeCommand(0x08);    // ICON CONF (Instr. Set 1)    IM=0 (Char mode) IB=0 (no icon blink) DM=0 (no direct mode)
+
+          _writeCommand(0x20 | _function);                  // Select Instruction Set = 0
+
+          break; // case PCF2119_3V3 Controller
+
+//      case PCF2119_5V:
+          // PCF2119 controller: No Voltage booster for VLCD. VDD=3V3. VA and VB control contrast.
+          // Note1: See datasheet, the PCF2119 supports icons and provides separate constrast control for Icons and characters.
+          // Note2: Vgen is switched off when the contrast voltage VA or VB is set to 0x00.                     
+//@TODO                            
+
+      case WS0010:         
+          // WS0010 OLED controller: Initialise DC/DC Voltage converter for LEDs
+          // Note1: Identical to RS0010  
+          // Note2: supports 1 or 2 lines (and 16x100 graphics)
+          //        supports 4 fonts (English/Japanese (default), Western European-I, English/Russian, Western European-II)
+                           // Cursor/Disp shift set 0001 SC RL  0 0
+                           //
+                           // Mode and Power set    0001 GC PWR 1 1                           
+                           //  GC  = 0 (Graph Mode=1, Char Mode=0)             
+                           //  PWR = 1 (DC/DC On/Off)
+   
+//@Todo: This may be needed to enable a warm reboot
+          //_writeCommand(0x13);   // Char mode, DC/DC off              
+          //wait_ms(10);           // Wait 10ms to ensure powered down                  
+          _writeCommand(0x17);   // Char mode, DC/DC on        
+          wait_ms(10);           // Wait 10ms to ensure powered up        
+
+          // Initialise Display configuration
+          switch (_type) {                    
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2B is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:                                            
+            case LCD24x1:
+              _writeCommand(0x20); // Function set 001 DL N F FT1 FT0
+                                   //  DL=0  (4 bits bus)             
+                                   //   N=0  (1 line)
+                                   //   F=0  (5x7 dots font)
+                                   //  FT=00 (00 = Engl/Jap, 01 = WestEur1, 10 = Engl/Russian, 11 = WestEur2
+              break;  
+
+            case LCD12x3D:            // Special mode for KS0078 and PCF21XX                            
+            case LCD12x3D1:           // Special mode for PCF21XX                     
+            case LCD12x4D:            // Special mode for PCF21XX:
+            case LCD16x3G:            // Special mode for ST7036            
+            case LCD24x4D:            // Special mode for KS0078
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+            default:
+              // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)       
+              _writeCommand(0x28); // Function set 001 DL N F FT1 FT0
+                                   //  DL=0  (4 bits bus)
+                                   //   N=1  (2 lines)
+                                   //   F=0  (5x7 dots font)
+                                   //  FT=00 (00 = Engl/Jap, 01 = WestEur1, 10 = Engl/Russian, 11 = WestEur2
+
+              break;
+           } // switch type
+           
+           break; // case WS0010 Controller
+
+
+      case US2066_3V3:
+          // US2066/SSD1311 OLED controller, Initialise for VDD=3V3
+          // Note: supports 1,2, 3 or 4 lines
+//      case USS2066_5V:
+          // US2066 controller, VDD=5V
+                    
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2D is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:   
+//            case LCD20x1:                                                                         
+              _function = 0x00;     //  Set function 0 0 1 X N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=X bit is ignored for US2066. Uses hardwired pins instead
+                                    //     N=0 1 Line / 3 Line
+                                    //    DH=0 Double Height disable 
+                                    //    IS=0
+          
+              _function_1 = 0x02;   // Set function, 0 0 1 X N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=X bit is ignored for US2066. Uses hardwired pins instead                                    
+                                    //     N=0 1 Line / 3 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803, US2066
+                                    //   REV=0 Reverse off, special feature of SSD1803, US2066            
+                        
+              _lines = 0x00;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=0 1-Line LCD (N=0)
+              break;  
+
+            case LCD16x1C:
+            case LCD8x2:
+            case LCD16x2:
+            case LCD20x2:            
+              _function = 0x08;     //  Set function 0 0 1 X N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=X bit is ignored for US2066. Uses hardwired pins instead                                                                        
+                                    //     N=1 2 line / 4 Line
+                                    //    DH=0 Double Height disable 
+                                    //    IS=0
+          
+              _function_1 = 0x0A;   // Set function, 0 0 1 X N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=X bit is ignored for US2066. Uses hardwired pins instead                                                                        
+                                    //     N=1 2 line / 4 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803, US2066
+                                    //   REV=0 Reverse off, special feature of SSD1803, US2066            
+                        
+              _lines = 0x00;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=0 2-Line LCD (N=1)
+              break;                
+
+            case LCD12x3D:          // Special mode for KS0078 and PCF21XX 
+//            case LCD12x3D1:           // Special mode for KS0078 and PCF21XX            
+            case LCD16x3D:          // Special mode for KS0078, SSD1803 and US2066
+//            case LCD16x3D1:           // Special mode for SSD1803, US2066
+//            case LCD20x3D:            // Special mode for SSD1803, US2066
+              _function = 0x00;     //  Set function 0 0 1 X N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=X bit is ignored for US2066. Uses hardwired pins instead                                    
+                                    //     N=0 1 Line / 3 Line
+                                    //    DH=0 Double Height disable 
+                                    //    IS=0
+          
+              _function_1 = 0x02;   // Set function, 0 0 1 X N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=X bit is ignored for US2066. Uses hardwired pins instead                                    
+                                    //     N=0 1 Line / 3 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803, US2066
+                                    //   REV=0 Reverse off, special feature of SSD1803, US2066            
+                        
+              _lines = 0x00;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=1 3-Line LCD (N=0)
+              break;  
+
+            case LCD20x4D:          // Special mode for SSD1803, US2066
+              _function = 0x08;     //  Set function 0 0 1 X N DH RE(0) IS 
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=X bit is ignored for US2066. Uses hardwired pins instead
+                                    //     N=1 2 line / 4 Line
+                                    //    DH=0 Double Height disable 
+                                    //    IS=0
+          
+              _function_1 = 0x0A;   // Set function, 0 0 1 DL N BE RE(1) REV
+                                    //  Saved to allow switch between Instruction sets at later time
+                                    //    DL=0 bit is ignored for US2066. Uses hardwired pins instead                                    
+                                    //     N=1 2 line / 4 Line
+                                    //    BE=0 Blink Enable off, special feature of SSD1803, US2066
+                                    //   REV=0 Reverse off, special feature of SSD1803, US2066            
+                        
+              _lines = 0x01;        // Ext function set 0 0 0 0 1 FW BW NW 
+                                    //    NW=1 4-Line LCD (N=1)
+              break;  
+
+//            case LCD24x1:                                                                         
+//            case LCD16x3G:          // Special mode for ST7036            
+//            case LCD24x4D:          // Special mode for KS0078
+            default:            
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+          } // switch type
+
+          _writeCommand(0x00);                      // NOP, make sure to sync SPI
+
+          // init special features 
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+
+          _writeCommand(0x71);                      // Function Select A: 0 1 1 1 0 0 0 1 (Ext Instr Set)
+          _writeData(0x00);                         // Disable Internal VDD
+
+          _writeCommand(0x79);                      // Function Select OLED:  0 1 1 1 1 0 0 1 (Ext Instr Set)
+
+          _writeCommand(0xD5);                      // Display Clock Divide Ratio: 1 1 0 1 0 1 0 1 (Ext Instr Set, OLED Instr Set)
+          _writeCommand(0x70);                      // Display Clock Divide Ratio value: 0 1 1 1 0 0 0 0 (Ext Instr Set, OLED Instr Set)
+                    
+          _writeCommand(0x78);                      // Function Disable OLED: 0 1 1 1 1 0 0 0 (Ext Instr Set)
+          
+//          _writeCommand(0x06);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=1 COM1-32, BDS=0 SEG100-1    "Bottom View" (Ext Instr Set)
+          _writeCommand(0x05);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=0 COM32-1, BDS=1 SEG1-100    "Top View" (Ext Instr Set)          
+         
+          _writeCommand(0x08 | _lines);             // Set ext function 0 0 0 0 1 FW BW NW 1,2,3 or 4 lines (Ext Instr Set)
+
+//          _writeCommand(0x1C);                      // Double Height, 0 0 0 1 UD2=1, UD1=1, X, DH'=0 (Ext Instr Set)
+//                                                    // Default
+
+          _writeCommand(0x72);                      // Function Select B: 0 1 1 1 0 0 1 0 (Ext Instr Set)
+          _writeData(0x01);                         // Select ROM A (CGRAM 8, CGROM 248)
+
+          _writeCommand(0x79);                      // Function Select OLED:  0 1 1 1 1 0 0 1 (Ext Instr Set)
+
+          _writeCommand(0xDA);                      // Set Segm Pins Config:  1 1 0 1 1 0 1 0 (Ext Instr Set, OLED)
+          _writeCommand(0x10);                      // Set Segm Pins Config value: Altern Odd/Even, Disable Remap (Ext Instr Set, OLED)
+
+          _writeCommand(0xDC);                      // Function Select C: 1 1 0 1 1 1 0 0 (Ext Instr Set, OLED)
+//          _writeCommand(0x00);                      // Set internal VSL, GPIO pin HiZ (always read low)
+          _writeCommand(0x80);                      // Set external VSL, GPIO pin HiZ (always read low)
+
+          _contrast = LCD_US20_CONTRAST;
+          _writeCommand(0x81);                      // Set Contrast Control: 1 0 0 0 0 0 0 1 (Ext Instr Set, OLED)
+          _writeCommand((_contrast << 2) | 0x03);   // Set Contrast Value: 8 bits, use 6 bits for compatibility 
+
+          _writeCommand(0xD9);                      // Set Phase Length: 1 1 0 1 1 0 0 1 (Ext Instr Set, OLED)
+          _writeCommand(0xF1);                      // Set Phase Length Value: 
+
+          _writeCommand(0xDB);                      // Set VCOMH Deselect Lvl: 1 1 0 1 1 0 1 1 (Ext Instr Set, OLED)
+          _writeCommand(0x30);                      // Set VCOMH Deselect Value: 0.83 x VCC
+
+          wait_ms(10);            // Wait 10ms to ensure powered up
+
+//Test Fade/Blinking. Hard Blink on/off, No fade in/out ??
+//          _writeCommand(0x23);                      // Set (Ext Instr Set, OLED)
+//          _writeCommand(0x3F);                      // Set interval 128 frames
+//End Test Blinking
+
+          _writeCommand(0x78);                      // Function Disable OLED: 0 1 1 1 1 0 0 0 (Ext Instr Set)
+          
+          _writeCommand(0x20 | _function | 0x01);   // Set function, 0 0 1 X N DH RE(0) IS=1 Select Instruction Set 1
+                                                    // Select Std Instr set, Select IS=1  
+
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Ext Instr Set, IS=1
+          _writeCommand(0x10);                      // Shift/Scroll enable, 0 0 0 1 DS4/HS4 DS3/HS3 DS2/HS2 DS1/HS1  (Ext Instr Set, IS=1)
+
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0        
+          break; // case US2066/SSD1311 Controller
+
+      //not yet tested on hardware
+      case PT6314 :
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2B is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:                                            
+            case LCD20x1:                                                        
+            case LCD24x1:
+              _function = 0x00;    // Function set 001 DL N X BR1 BR0
+                                   //  DL=0 (4 bits bus)
+                                   //  Note: 4 bit mode is ignored for native SPI and I2C devices                                                                                 
+                                   //  N=0 (1 line)
+                                   //  X
+                                   //  BR1=0 (2 significant bits for brightness
+                                   //  BR0=0 
+                                   //           0x0 = 100%
+                                   //           0x1 =  75%
+                                   //           0x2 =  50%
+                                   //           0x3 =  25%                
+
+              break;                                
+                                                  
+            // All other valid LCD types are initialised as 2 Line displays
+            case LCD8x2:  
+            case LCD16x2:  
+            case LCD20x2:
+            case LCD24x2:
+              _function = 0x08;    // Function set 001 DL N X BR1 BR2
+                                   //  DL=0 (4 bits bus)
+                                   //  Note: 4 bit mode is ignored for native SPI and I2C devices                                 
+                                   //  N=1 (2 lines)
+                                   //  X
+                                   //  BR1=0 (2 significant bits for brightness
+                                   //  BR0=0 
+              break;
+              
+            default:            
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;               
+          } // switch type
+           
+          _contrast = LCD_PT63_CONTRAST;
+          _writeCommand(0x20 | _function | ((~_contrast) >> 4));        // Invert and shift to use 2 MSBs     
+          break; // case PT6314 Controller (VFD)
+           
+        case ST7066_ACM:                                                // ST7066 4/8 bit, I2C on ACM1602 using a PIC        
+        default:
+          // Devices fully compatible to HD44780 that do not use any DC/DC Voltage converters but external VLCD, no icons etc
+
+          // Initialise Display configuration
+          switch (_type) {
+            case LCD8x1:         //8x1 is a regular 1 line display
+            case LCD8x2B:        //8x2B is a special case of 16x1
+//            case LCD12x1:                                
+            case LCD16x1:                                            
+//            case LCD20x1:                                                        
+            case LCD24x1:
+//            case LCD40x1:            
+              _function = 0x00;    // Function set 001 DL N F - -
+                                   //  DL=0 (4 bits bus)             
+                                   //   N=0 (1 line)
+                                   //   F=0 (5x7 dots font)
+              break;                                
+                                                  
+            case LCD12x3D:            // Special mode for KS0078 and PCF21XX                            
+            case LCD12x3D1:           // Special mode for KS0078 and PCF21XX                     
+            case LCD12x4D:            // Special mode for KS0078 and PCF21XX:
+            case LCD16x3D:            // Special mode for KS0078
+//            case LCD16x3D1:           // Special mode for KS0078
+//            case LCD24x3D:            // Special mode for KS0078
+//            case LCD24x3D1:           // Special mode for KS0078            
+            case LCD24x4D:            // Special mode for KS0078
+              error("Error: LCD Controller type does not support this Display type\n\r"); 
+              break;  
+
+            // All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
+            default:
+              _function = 0x08;    // Function set 001 DL N F - -
+                                   //  DL=0 (4 bits bus)
+                                   //  Note: 4 bit mode is ignored for native SPI and I2C devices                                 
+                                   //   N=1 (2 lines)
+                                   //   F=0 (5x7 dots font, only option for 2 line display)
+                                   //    -  (Don't care)
+              break;
+          } // switch type
+
+          _writeCommand(0x20 | _function);                         
+          break; // case default Controller
+          
+    } // switch Controller specific initialisations    
+
+    // Controller general initialisations                                          
+//    _writeCommand(0x01); // cls, and set cursor to 0
+//    wait_ms(10);         // The CLS command takes 1.64 ms.
+//                         // Since we are not using the Busy flag, Lets be safe and take 10 ms  
+
+    _writeCommand(0x02); // Return Home 
+                         //   Cursor Home, DDRAM Address to Origin
+
+    _writeCommand(0x06); // Entry Mode 0000 0 1 I/D S 
+                         //   Cursor Direction and Display Shift
+                         //   I/D=1 (Cur incr)
+                         //     S=0 (No display shift)                        
+
+    _writeCommand(0x14); // Cursor or Display shift 0001 S/C R/L x x 
+                         //   S/C=0 Cursor moves
+                         //   R/L=1 Right
+                         // 
+
+//    _writeCommand(0x0C); // Display Ctrl 0000 1 D C B
+//                         //   Display On, Cursor Off, Blink Off   
+
+    setCursor(CurOff_BlkOff);     
+    setMode(DispOn);     
+}
+
+
+/** Clear the screen, Cursor home. 
+  */
+void TextLCD_Base::cls() {
+
+  // Select and configure second LCD controller when needed
+  if(_type==LCD40x4) {
+    _ctrl_idx=_LCDCtrl_1; // Select 2nd controller
+
+    // Second LCD controller Cursor always Off
+    _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff);
+
+    // Second LCD controller Clearscreen
+    _writeCommand(0x01);  // cls, and set cursor to 0    
+    wait_ms(10);          // The CLS command takes 1.64 ms.
+                          // Since we are not using the Busy flag, Lets be safe and take 10 ms
+  
+    _ctrl_idx=_LCDCtrl_0; // Select primary controller
+  }
+  
+  // Primary LCD controller Clearscreen
+  _writeCommand(0x01);    // cls, and set cursor to 0
+  wait_ms(10);            // The CLS command takes 1.64 ms.
+                          // Since we are not using the Busy flag, Lets be safe and take 10 ms
+
+  // Restore cursormode on primary LCD controller when needed
+  if(_type==LCD40x4) {
+    _setCursorAndDisplayMode(_currentMode,_currentCursor);     
+  }
+                   
+  setAddress(0, 0);  // Reset Cursor location
+                     // Note: This is needed because some displays (eg PCF21XX) don't use line 0 in the '3 Line' mode.   
+}
+
+/** 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 TextLCD_Base::locate(int column, int row) {
+    
+   // setAddress() does all the heavy lifting:
+   //   check column and row sanity, 
+   //   switch controllers for LCD40x4 if needed
+   //   switch cursor for LCD40x4 if needed
+   //   set the new memory address to show cursor at correct location
+   setAddress(column, row);      
+}
+   
+
+/** Write a single character (Stream implementation)
+  */
+int TextLCD_Base::_putc(int value) {
+  int addr;
+    
+    if (value == '\n') {
+      //No character to write
+      
+      //Update Cursor      
+      _column = 0;
+      _row++;
+      if (_row >= rows()) {
+        _row = 0;
+      }      
     }
-    writeByte(0x2);     // 4-bit mode
-    wait(0.000040f);    // most instructions take 40us
-
-    writeCommand(0x28); // Function set 001 BW N F - -
-    writeCommand(0x0C);
-    writeCommand(0x6);  // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
-    cls();
-}
-
-void TextLCD::character(int column, int row, int c) {
-    int a = address(column, row);
-    writeCommand(a);
-    writeData(c);
-}
-
-void TextLCD::cls() {
-    writeCommand(0x01); // cls, and set cursor to 0
-    wait(0.00164f);     // This command takes 1.64 ms
-    locate(0, 0);
-}
-
-void TextLCD::locate(int column, int row) {
-    _column = column;
-    _row = row;
-}
-
-int TextLCD::_putc(int value) {
-    if (value == '\n') {
+    else {
+      //Character to write
+#if (LCD_DEFAULT_FONT == 1)      
+      _writeData(value);
+#else
+      _writeData(ASCII_2_LCD(value));
+#endif              
+      //Update Cursor
+      _column++;
+      if (_column >= columns()) {
         _column = 0;
         _row++;
         if (_row >= rows()) {
-            _row = 0;
+          _row = 0;
         }
-    } else {
-        character(_column, _row, value);
-        _column++;
-        if (_column >= columns()) {
-            _column = 0;
-            _row++;
-            if (_row >= rows()) {
-                _row = 0;
-            }
-        }
-    }
+      }          
+    } //else
+
+    //Set next memoryaddress, make sure cursor blinks at next location
+    addr = getAddress(_column, _row);
+    _writeCommand(0x80 | addr);
+            
     return value;
 }
 
-int TextLCD::_getc() {
+
+// get a single character (Stream implementation)
+int TextLCD_Base::_getc() {
     return -1;
 }
 
-void TextLCD::writeByte(int value) {
-    _d = value >> 4;
-    wait(0.000040f); // most instructions take 40us
-    _e = 0;
-    wait(0.000040f);
-    _e = 1;
-    _d = value >> 0;
-    wait(0.000040f);
-    _e = 0;
-    wait(0.000040f);  // most instructions take 40us
-    _e = 1;
+/** Convert ASCII character code to the LCD fonttable code
+  *
+  * @param c The character to write to the display
+  * @return The character code for the specific fonttable of the controller
+  */
+int TextLCD_Base::ASCII_2_LCD (int c) {
+    
+//LCD_C_FT0 is default for HD44780 and compatible series
+    if (_font == LCD_C_FT0) return c;
+
+//LCD_C_FT1 for PCF21XXC series    
+//Used code from Suga koubou library for PCF2119
+    if (((c >= ' ') && (c <= '?')) || ((c >= 'A') && (c <= 'Z')) || ((c >= 'a') && (c <= 'z'))) {
+        c |= 0x80;
+    } else if (c >= 0xf0 && c <= 0xff) {
+        c &= 0x0f;
+    }
+    return c;
+
+//LCD_C_FT2 ...
+//@TODO add more, eg cyrillic 
+//@TODO add method to switch between fonts for controllers that support this
+}
+
+
+#if(LCD_PRINTF != 1)
+/** Write a character to the LCD
+  *
+  * @param c The character to write to the display
+  */
+int TextLCD_Base::putc(int c){
+  return _putc(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 TextLCD_Base::printf(const char* text, ...) {
+  
+  while (*text !=0) {
+    _putc(*text);
+    text++;
+  }
+  return 0;
+}
+#endif    
+
+
+// Write a nibble using the 4-bit interface
+void TextLCD_Base::_writeNibble(int value) {
+
+// Enable is Low
+    this->_setEnable(true);        
+    this->_setData(value);        // Low nibble
+    wait_us(1); // Data setup time        
+    this->_setEnable(false);    
+    wait_us(1); // Datahold time
+// Enable is Low
+}
+
+// Write a byte using the 4-bit interface
+void TextLCD_Base::_writeByte(int value) {
+
+// Enable is Low
+    this->_setEnable(true);          
+    this->_setData(value >> 4);   // High nibble
+    wait_us(1); // Data setup time    
+    this->_setEnable(false);   
+    wait_us(1); // Data hold time
+    
+    this->_setEnable(true);        
+    this->_setData(value);        // Low nibble
+    wait_us(1); // Data setup time        
+    this->_setEnable(false);    
+    wait_us(1); // Datahold time
+
+// Enable is Low
+}
+
+// Write a command byte to the LCD controller
+void TextLCD_Base::_writeCommand(int command) {
+
+    this->_setRS(false);        
+    wait_us(1);  // Data setup time for RS       
+    
+    this->_writeByte(command);   
+    wait_us(40); // most instructions take 40us            
+}
+
+// Write a data byte to the LCD controller
+void TextLCD_Base::_writeData(int data) {
+
+    this->_setRS(true);            
+    wait_us(1);  // Data setup time for RS 
+        
+    this->_writeByte(data);
+    wait_us(40); // data writes take 40us                
+}
+
+
+// This replaces the original _address() method.
+// It is confusing since it returns the memoryaddress or-ed with the set memorycommand 0x80.
+// Left it in here for compatibility with older code. New applications should use getAddress() instead.
+int TextLCD_Base::_address(int column, int row) {
+  return 0x80 | getAddress(column, row);
 }
 
-void TextLCD::writeCommand(int command) {
-    _rs = 0;
-    writeByte(command);
+
+// This is new method to return the memory address based on row, column and displaytype.
+//
+/** 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 TextLCD_Base::getAddress(int column, int row) {
+
+    switch (_addr_mode) {
+
+        case LCD_T_A:
+          //Default addressing mode for 1, 2 and 4 rows (except 40x4)
+          //The two available rows are split and stacked on top of eachother. Addressing for 3rd and 4th line continues where lines 1 and 2 were split.          
+          //Displays top rows when less than four are used.          
+          switch (row) {
+            case 0:
+              return 0x00 + column;
+            case 1:
+              return 0x40 + column;
+            case 2:
+              return 0x00 + _nr_cols + column;
+            case 3:
+              return 0x40 + _nr_cols + column;
+            // Should never get here.
+            default:            
+              return 0x00;                    
+            }
+          
+        case LCD_T_B:
+          // LCD8x2B is a special layout of LCD16x1
+          if (row==0) 
+            return 0x00 + column;                        
+          else   
+//            return _nr_cols + column;                                    
+            return 0x08 + column;                        
+
+        case LCD_T_C:
+          // LCD16x1C is a special layout of LCD8x2
+          // LCD32x1C is a special layout of LCD16x2                    
+          // LCD40x1C is a special layout of LCD20x2          
+#if(0)
+          if (column < 8) 
+            return 0x00 + column;                        
+          else   
+            return 0x40 + (column - 8);                        
+#else
+          if (column < (_nr_cols >> 1)) 
+            return 0x00 + column;                        
+          else   
+            return 0x40 + (column - (_nr_cols >> 1));                        
+#endif
+
+// Not sure about this one, seems wrong.
+// Left in for compatibility with original library
+//        case LCD16x2B:      
+//            return 0x00 + (row * 40) + column;
+
+        case LCD_T_D:
+          //Alternate addressing mode for 3 and 4 row displays (except 40x4). Used by PCF21XX, KS0073, KS0078, SSD1803
+          //The 4 available rows start at a hardcoded address.                    
+          //Displays top rows when less than four are used.
+          switch (row) {
+            case 0:
+              return 0x00 + column;
+            case 1:
+              return 0x20 + column;
+            case 2:
+              return 0x40 + column;
+            case 3:
+              return 0x60 + column;
+            // Should never get here.
+            default:            
+              return 0x00;                    
+            }
+
+        case LCD_T_D1:
+          //Alternate addressing mode for 3 row displays. Used by PCF21XX, KS0073, KS0078, SSD1803
+          //The 4 available rows start at a hardcoded address.                              
+          //Skips top row of 4 row display and starts display at row 1
+          switch (row) {
+            case 0:
+              return 0x20 + column;
+            case 1:
+              return 0x40 + column;
+            case 2:
+              return 0x60 + column;
+            // Should never get here.
+            default:            
+              return 0x00;                    
+            }
+        
+        case LCD_T_E:                
+          // LCD40x4 is a special case since it has 2 controllers.
+          // Each controller is configured as 40x2 (Type A)
+          if (row<2) { 
+            // Test to see if we need to switch between controllers  
+            if (_ctrl_idx != _LCDCtrl_0) {
+
+              // Second LCD controller Cursor Off
+              _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff);    
+
+              // Select primary controller
+              _ctrl_idx = _LCDCtrl_0;
+
+              // Restore cursormode on primary LCD controller
+              _setCursorAndDisplayMode(_currentMode, _currentCursor);    
+            }           
+            
+            return 0x00 + (row * 0x40) + column;          
+          }
+          else {
+
+            // Test to see if we need to switch between controllers  
+            if (_ctrl_idx != _LCDCtrl_1) {
+              // Primary LCD controller Cursor Off
+              _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff);    
+
+              // Select secondary controller
+              _ctrl_idx = _LCDCtrl_1;
+
+              // Restore cursormode on secondary LCD controller
+              _setCursorAndDisplayMode(_currentMode, _currentCursor);    
+            }           
+                                   
+            return 0x00 + ((row-2) * 0x40) + column;          
+          } 
+            
+        case LCD_T_F:
+          //Alternate addressing mode for 3 row displays.
+          //The first half of 3rd row continues from 1st row, the second half continues from 2nd row.                              
+          switch (row) {
+            case 0:
+              return 0x00 + column;
+            case 1:
+              return 0x40 + column;
+            case 2:
+              if (column < (_nr_cols >> 1)) // check first or second half of line
+                return (0x00 + _nr_cols + column);                        
+              else   
+                return (0x40 + _nr_cols + (column - (_nr_cols >> 1)));                        
+            // Should never get here.
+            default:            
+              return 0x00;                    
+          }
+
+        case LCD_T_G:
+          //Alternate addressing mode for 3 row displays. Used by ST7036
+          switch (row) {
+            case 0:
+              return 0x00 + column;
+            case 1:
+              return 0x10 + column;
+            case 2:
+              return 0x20 + column;
+            // Should never get here.
+            default:            
+              return 0x00;                    
+            }
+
+        // Should never get here.
+        default:            
+            return 0x00;        
+
+    } // switch _addr_mode
 }
 
-void TextLCD::writeData(int data) {
-    _rs = 1;
-    writeByte(data);
+
+/** 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 TextLCD_Base::setAddress(int column, int row) {
+   
+// Sanity Check column
+    if (column < 0) {
+      _column = 0;
+    }
+    else if (column >= _nr_cols) {
+      _column = _nr_cols - 1;
+    } else _column = column;
+    
+// Sanity Check row
+    if (row < 0) {
+      _row = 0;
+    }
+    else if (row >= _nr_rows) {
+      _row = _nr_rows - 1;
+    } else _row = row;
+    
+    
+// Compute the memory address
+// For LCD40x4:  switch controllers if needed
+//               switch cursor if needed
+    int addr = getAddress(_column, _row);
+    
+    _writeCommand(0x80 | addr);
+}
+
+
+/** Return the number of columns
+  *
+  * @return  The number of columns
+  *
+  * Note: some configurations are commented out because they have not yet been tested due to lack of hardware     
+  */   
+int TextLCD_Base::columns() {
+    
+  // Columns encoded in b7..b0
+  //return (_type & 0xFF);          
+  return _nr_cols;           
+}
+
+/** Return the number of rows
+  *
+  * @return  The number of rows
+  *
+  * Note: some configurations are commented out because they have not yet been tested due to lack of hardware     
+  */
+int TextLCD_Base::rows() {
+
+  // Rows encoded in b15..b8  
+  //return ((_type >> 8) & 0xFF); 
+  return _nr_rows;          
+}
+
+/** Set the Cursormode
+  *
+  * @param cursorMode  The Cursor mode (CurOff_BlkOff, CurOn_BlkOff, CurOff_BlkOn, CurOn_BlkOn)
+  */
+void TextLCD_Base::setCursor(LCDCursor cursorMode) { 
+
+  // Save new cursor mode, needed when 2 controllers are in use or when display is switched off/on
+  _currentCursor = cursorMode;
+    
+  // Configure only current LCD controller
+  _setCursorAndDisplayMode(_currentMode, _currentCursor);    
+}
+
+/** Set the Displaymode
+  *
+  * @param displayMode The Display mode (DispOff, DispOn)
+  */
+void TextLCD_Base::setMode(LCDMode displayMode) { 
+
+  // Save new displayMode, needed when 2 controllers are in use or when cursor is changed
+  _currentMode = displayMode;
+    
+  // Select and configure second LCD controller when needed
+  if(_type==LCD40x4) {
+    if (_ctrl_idx==_LCDCtrl_0) {      
+      // Configure primary LCD controller
+      _setCursorAndDisplayMode(_currentMode, _currentCursor);
+
+      // Select 2nd controller
+      _ctrl_idx=_LCDCtrl_1;
+  
+      // Configure secondary LCD controller    
+      _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff);
+
+      // Restore current controller
+      _ctrl_idx=_LCDCtrl_0;       
+    }
+    else {
+      // Select primary controller
+      _ctrl_idx=_LCDCtrl_0;
+    
+      // Configure primary LCD controller
+      _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff);
+       
+      // Restore current controller
+      _ctrl_idx=_LCDCtrl_1;
+
+      // Configure secondary LCD controller    
+      _setCursorAndDisplayMode(_currentMode, _currentCursor);
+    }
+  }
+  else {
+    // Configure primary LCD controller
+    _setCursorAndDisplayMode(_currentMode, _currentCursor);
+  }       
+}
+
+/** Low level method to restore the cursortype and display mode for current controller
+  */     
+void TextLCD_Base::_setCursorAndDisplayMode(LCDMode displayMode, LCDCursor cursorType) {    
+
+  // Configure current LCD controller   
+  switch (_ctrl) {
+    case ST7070: 
+      //ST7070 does not support Cursorblink. The P bit selects the font instead !   
+      _writeCommand(0x08 | displayMode | (cursorType & 0x02));    
+      break;
+    default:      
+      _writeCommand(0x08 | displayMode | cursorType);
+      break;
+  } //switch      
+}
+
+/** Set the Backlight mode
+  *
+  *  @param backlightMode The Backlight mode (LightOff, LightOn)
+  */
+void TextLCD_Base::setBacklight(LCDBacklight backlightMode) {
+
+#if (BACKLIGHT_INV==0)      
+    // Positive Backlight control pin logic
+    if (backlightMode == LightOn) {
+      this->_setBL(true);     
+    }
+    else {
+      this->_setBL(false);    
+    }
+#else
+    // Inverted Backlight control pin logic
+    if (backlightMode == LightOn) {
+      this->_setBL(false);    
+    }
+    else {
+      this->_setBL(true);           
+    }
+#endif    
+} 
+
+/** Set User Defined Characters
+  *
+  * @param unsigned char c   The Index of the UDC (0..7) for HD44780 or 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 TextLCD_Base::setUDC(unsigned char c, char *udc_data) {
+  
+  // Select and configure second LCD controller when needed
+  if(_type==LCD40x4) {
+    _LCDCtrl_Idx current_ctrl_idx = _ctrl_idx; // Temp save current controller
+   
+    // Select primary controller     
+    _ctrl_idx=_LCDCtrl_0;
+    
+    // Configure primary LCD controller
+    _setUDC(c, udc_data);
+
+    // Select 2nd controller
+    _ctrl_idx=_LCDCtrl_1;
+  
+    // Configure secondary LCD controller    
+    _setUDC(c, udc_data);
+
+    // Restore current controller
+    _ctrl_idx=current_ctrl_idx;       
+  }
+  else {
+    // Configure primary LCD controller
+    _setUDC(c, udc_data); 
+  }   
+}
+
+/** 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 for bitpattern and 3 bits for blinkmode (advanced types))       
+  */     
+void TextLCD_Base::_setUDC(unsigned char c, char *udc_data) {
+  
+  switch (_ctrl) {
+    case PCF2103_3V3 : // Some UDCs may be used for Icons                  
+    case PCF2113_3V3 : // Some UDCs may be used for Icons                      
+    case PCF2116_3V3 :          
+    case PCF2116_5V  :              
+    case PCF2119_3V3 : // Some UDCs may be used for Icons             
+      c = c & 0x0F; // mask down to valid range
+      break;
+
+    default:     
+      c = c & 0x07; // mask down to valid range    
+      break;  
+  } //switch _ctrl
+
+  // Select DD RAM for current LCD controller
+  // This is needed to correctly set Bit 6 of the addresspointer for controllers that support 16 UDCs
+  _writeCommand(0x80 | ((c << 3) & 0x40)) ;  
+    
+  // Select CG RAM for current LCD controller
+  _writeCommand(0x40 | ((c << 3) & 0x3F)); //Set CG-RAM address, (note that Bit 6 is retained and can not be set by this command !)
+                                           //8 sequential locations needed per UDC
+  // Store UDC pattern 
+  for (int i=0; i<8; i++) {
+    _writeData(*udc_data++);
+  }
+   
+  //Select DD RAM again for current LCD controller and restore the addresspointer
+  int addr = getAddress(_column, _row);
+  _writeCommand(0x80 | addr);  
 }
 
-int TextLCD::address(int column, int row) {
-    switch (_type) {
-        case LCD20x4:
-            switch (row) {
-                case 0:
-                    return 0x80 + column;
-                case 1:
-                    return 0xc0 + column;
-                case 2:
-                    return 0x94 + column;
-                case 3:
-                    return 0xd4 + column;
-            }
-        case LCD16x2B:
-            return 0x80 + (row * 40) + column;
-        case LCD16x2:
-        case LCD20x2:
+/** Set UDC Blink and Icon blink
+  * setUDCBlink method is supported by some compatible devices (eg SSD1803) 
+  *
+  * @param blinkMode The Blink mode (BlinkOff, BlinkOn)
+  */
+void TextLCD_Base::setUDCBlink(LCDBlink blinkMode){
+  // Blinking UDCs (and icons) are enabled when a specific controlbit (BE) is set.
+  // The blinking pixels in the UDC and icons can be controlled by setting additional bits in the UDC or icon bitpattern.
+  // UDCs are defined by an 8 byte bitpattern. The P0..P4 form the character pattern.
+  //     P7 P6 P5 P4 P3 P2 P1 P0 
+  // 0   B1 B0  x  0  1  1  1  0
+  // 1   B1 B0  x  1  0  0  0  1
+  //        .............
+  // 7   B1 B0  x  1  0  0  0  1
+  //
+  // Bit 6 and Bit 7 in the pattern will control the blinking mode when Blink is enabled through BE. 
+  //     B1 B0  Mode
+  //      0  0  No Blinking in this row of the UDC
+  //      0  1  Enabled pixels in P4 will blink
+  //      1  x  Enabled pixels in P0..P4 will blink
+  //
+  // Note: the PCF2103 and PCF2113 use UDCs to set Icons 
+  //   3 x 8 rows x 5 bits = 120 bits Icons for Normal pattern (UDC 0..2) and
+  //   3 x 8 rows x 5 bits = 120 bits Icons for Blink pattern (UDC 4..6) 
+  // Note: the PCF2119 uses UDCs to set Icons 
+  //   4 x 8 rows x 5 bits = 160 bits Icons for Normal pattern (UDC 0..3) and
+  //   4 x 8 rows x 5 bits = 160 bits Icons for Blink pattern (UDC 4..7) 
+  switch (blinkMode) {
+    case BlinkOn: 
+      // Controllers that support UDC/Icon Blink  
+      switch (_ctrl) {
+        case KS0073 :            
+        case KS0078 :            
+          _function_1 |= 0x02; // Enable UDC/Icon Blink        
+          _writeCommand(0x20 | _function_1);        // Function set 0 0 1 DL N RE(1) BE 0/LP (Ext Regs)
+
+          _writeCommand(0x20 | _function);          // Function set 0 0 1 DL N RE(0) DH REV (Std Regs)
+          break; // case KS0073, KS0078 Controller
+    
+        case US2066_3V3 :  
+        case SSD1803_3V3 :  
+          _function_1 |= 0x04; // Enable UDC/Icon Blink
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 DL N BE RE(1) REV 
+                                                    // Select Ext Instr Set
+
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0
+          break; // case SSD1803, US2066
+
+        case PCF2103_3V3 :  
+        case PCF2113_3V3 :  
+        case PCF2119_3V3 :                  
+          // Enable Icon Blink
+          _writeCommand(0x20 | _function | 0x01);   // Set function, Select Instr Set = 1              
+          _writeCommand(0x08 | 0x02);               // ICON Conf 0000 1, IM=0 (Char mode), IB=1 (Icon blink), 0 (Instr. Set 1) 
+          _writeCommand(0x20 | _function);          // Set function, Select Instr Set = 0             
+
+          break; 
+       
+        default:
+          //Unsupported feature for other controllers        
+          break; 
+      } //switch _ctrl     
+    
+      break; // BlinkOn 
+
+    case BlinkOff:
+      // Controllers that support UDC Blink  
+      switch (_ctrl) {
+        case KS0073 :            
+        case KS0078 :            
+          _function_1 &= ~0x02; // Disable UDC/Icon Blink        
+          _writeCommand(0x20 | _function_1);        // Function set 0 0 1 DL N RE(1) BE 0/LP (Ext Regs)
+
+          _writeCommand(0x20 | _function);          // Function set 0 0 1 DL N RE(0) DH REV (Std Regs)
+          break; // case KS0073, KS0078 Controller
+    
+        case US2066_3V3 :  
+        case SSD1803_3V3 :  
+          _function_1 &= ~0x04; // Disable UDC/Icon Blink
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 DL N BE RE(1) REV 
+                                                    // Select Ext Instr Set
+
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0
+          break; // case SSD1803, US2066          
+ 
+        case PCF2103_3V3 :
+        case PCF2113_3V3 :  
+        case PCF2119_3V3 :       
+          // Disable Icon Blink
+          _writeCommand(0x20 | _function | 0x01);   // Set function, Select Instr Set = 1              
+          _writeCommand(0x08);                      // ICON Conf 0000 1, IM=0 (Char mode), IB=1 (Icon blink), 0 (Instr. Set 1) 
+          _writeCommand(0x20 | _function);          // Set function, Select Instr Set = 0             
+
+          break; 
+       
+        default:
+          //Unsupported feature for other controllers        
+          break; 
+      } //switch _ctrl     
+    
+      break; //BlinkOff
+      
+    default:
+      break;      
+  } // blinkMode
+  
+} // setUDCBlink()
+
+
+/** Set Contrast
+  * setContrast method is supported by some compatible devices (eg ST7032i) that have onboard LCD voltage generation
+  * Initial code for ST70XX 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
+  */
+//@TODO Add support for 40x4 dual controller
+void TextLCD_Base::setContrast(unsigned char c) {
+
+// Function set mode stored during Init. Make sure we dont accidentally switch between 1-line and 2-line mode!
+// Icon/Booster mode stored during Init. Make sure we dont accidentally change this!
+ 
+  _contrast = c & 0x3F; // Sanity check
+  
+  switch (_ctrl) {   
+    case PCF2113_3V3 :  
+    case PCF2119_3V3 :  
+       if (_contrast <  5) _contrast = 0;  // See datasheet. Sanity check for PCF2113/PCF2119
+       if (_contrast > 55) _contrast = 55;
+      
+       _writeCommand(0x20 | _function | 0x01);               // Set function, Select Instruction Set = 1              
+       _writeCommand(0x80 | 0x00 | (_contrast & 0x3F));      // VLCD_set (Instr. Set 1)    V=0, VA=contrast
+       _writeCommand(0x80 | 0x40 | (_contrast & 0x3F));      // VLCD_set (Instr. Set 1)    V=1, VB=contrast
+       _writeCommand(0x20 | _function);                      // Select Instruction Set = 0
+       break;
+        
+    case ST7032_3V3 :  
+    case ST7032_5V :      
+    case ST7036_3V3 :      
+//    case ST7036_5V :          
+    case SSD1803_3V3 :      
+      _writeCommand(0x20 | _function | 0x01);                        // Select Instruction Set = 1
+      _writeCommand(0x70 | (_contrast & 0x0F));                      // Contrast Low bits
+      _writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03)); // Contrast High bits 
+      _writeCommand(0x20 | _function);                               // Select Instruction Set = 0
+      break;
+
+    case US2066_3V3 :      
+      _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 DL N BE RE(1) REV 
+                                                // Select Extended Instruction Set
+
+      _writeCommand(0x79);                      // Function Select OLED:  0 1 1 1 1 0 0 1 (Ext Instr Set)
+         
+      _writeCommand(0x81);                      // Set Contrast Control: 1 0 0 0 0 0 0 1 (Ext Instr Set, OLED)
+      _writeCommand((_contrast << 2) | 0x03);   // Set Contrast Value: 8 bits. Use 6 bits for compatibility    
+      
+      _writeCommand(0x78);                      // Function Disable OLED: 0 1 1 1 1 0 0 0 (Ext Instr Set)          
+
+      _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                // Select Std Instr set, Select IS=0
+      break;
+
+    //not yet tested on hardware
+    case PT6314 :
+      // Only 2 significant bits
+      //   0x00 = 100%
+      //   0x01 =  75%
+      //   0x02 =  50%
+      //   0x03 =  25%                
+      _writeCommand(0x20 | _function | ((~_contrast) >> 4));        // Invert and shift to use 2 MSBs     
+      break;
+            
+    default:  
+      //Unsupported feature for other controllers
+      break;               
+  } // end switch     
+} // end setContrast()
+
+
+/** 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
+  */
+//@TODO Add support for 40x4 dual controller  
+void TextLCD_Base::setPower(bool powerOn) {
+  
+  if (powerOn) {
+    // Switch on  
+    setMode(DispOn);       
+
+    // Controllers that supports specific Power Down mode
+    switch (_ctrl) {
+    
+//    case PCF2113_3V3 :  
+//    case PCF2119_3V3 :  
+//    case ST7032_3V3 :  
+//@todo
+//    enable Booster Bon
+
+      case WS0010:      
+        _writeCommand(0x17);   // Char mode, DC/DC on        
+        wait_ms(10);           // Wait 10ms to ensure powered up             
+        break;
+
+      case KS0073:        
+      case KS0078:        
+      case SSD1803_3V3 :      
+//      case SSD1803_5V :            
+        _writeCommand(0x20 | _function_1);                             // Select Ext Instr Set
+        _writeCommand(0x02);                                           // Power On
+        _writeCommand(0x20 | _function);                               // Select Std Instr Set
+        break;
+                    
+      default:  
+        //Unsupported feature for other controllers
+        break;              
+    } // end switch  
+  }  
+  else {
+    // Switch off        
+    setMode(DispOff);       
+
+    // Controllers that support specific Power Down mode
+    switch (_ctrl) {
+    
+//    case PCF2113_3V3 :  
+//    case PCF2119_3V3 :  
+//    case ST7032_3V3 :  
+//@todo
+//    disable Booster Bon
+
+      case WS0010:      
+        _writeCommand(0x13);   // Char mode, DC/DC off              
+        break;
+        
+      case KS0073:
+      case KS0078:
+      case SSD1803_3V3 :      
+//      case SSD1803_5V :            
+        _writeCommand(0x20 | _function_1);                             // Select Ext Instr Set
+        _writeCommand(0x03);                                           // Power Down
+        _writeCommand(0x20 | _function);                               // Select Std Instr Set
+        break;
+
+      default:  
+        //Unsupported feature for other controllers
+        break;              
+    } // end switch  
+  }
+} // end setPower()
+
+
+/** 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 TextLCD_Base::setOrient(LCDOrient orient){
+
+  switch (orient) {
+       
+    case Top:
+      switch (_ctrl) {
+        case PCF2103_3V3:              
+        case PCF2116_3V3:        
+        case PCF2116_5V:                
+        case PCF2119_3V3:                
+          _writeCommand(0x20 | _function | 0x01);          // Set function, Select Instr Set = 1              
+          _writeCommand(0x05);                             // Display Conf Set         0000 0, 1, P=0, Q=1               (Instr. Set 1)
+          _writeCommand(0x20 | _function);                 // Set function, Select Instr Set = 0             
+          break;
+                               
+        case SSD1803_3V3 :      
+//      case SSD1803_5V :
+        case US2066_3V3 :      
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+//          _writeCommand(0x06);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=1 COM1-32, BDS=0 SEG100-1    "Bottom View" (Ext Instr Set)
+          _writeCommand(0x05);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=0 COM32-1, BDS=1 SEG1-100    "Top View" (Ext Instr Set)          
+
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0       
+          break;
+
+        case ST7070:      
+          _writeCommand(0x20 | _function | 0x04);   // Set function, 0 0 1 DL, N, EXT=1, x, x (Select Instr Set = 1)
+
+          _writeCommand(0x40 | 0x00);               // COM/SEG directions 0 1 0 0 C1, C2, S1, S2  (Instr Set 1)
+                                                    // C1=1: Com1-8 -> Com8-1;   C2=1: Com9-16 -> Com16-9
+                                                    // S1=1: Seg1-40 -> Seg40-1; S2=1: Seg41-80 -> Seg80-41                                                    
+          wait_ms(5);                               // Wait to ensure completion or ST7070 fails to set Top/Bottom after reset..
+          
+          _writeCommand(0x20 | _function);          // Set function, EXT=0 (Select Instr Set = 0)
+        
+          break; // case ST7070 Controller
+          
+        default:  
+          //Unsupported feature for other controllers
+          break;              
+
+      } // end switch _ctrl     
+      break; // end Top
+                
+    case Bottom:
+      switch (_ctrl) {
+        case PCF2103_3V3:              
+        case PCF2116_3V3:        
+        case PCF2116_5V:                
+        case PCF2119_3V3:                       
+          _writeCommand(0x20 | _function | 0x01);          // Set function, Select Instr Set = 1              
+          _writeCommand(0x06);                             // Display Conf Set         0000 0, 1, P=1, Q=0               (Instr. Set 1)
+          _writeCommand(0x20 | _function);                 // Set function, Select Instr Set = 0             
+          break;
+        
+        case SSD1803_3V3 :      
+//      case SSD1803_5V :
+        case US2066_3V3 :      
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+          _writeCommand(0x06);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=1 COM1-32, BDS=0 SEG100-1    "Bottom View" (Ext Instr Set)
+//          _writeCommand(0x05);                      // Set ext entry mode, 0 0 0 0 0 1 BDC=0 COM32-1, BDS=1 SEG1-100    "Top View" (Ext Instr Set)          
+
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0       
+          break;
+
+        case ST7070:
+          //Note: this does not result in correct top/bottom view. 
+          //The left and right half of each row are reversed and the addressing of both rows is also incorrect:
+          //Top/bottomline when orientation is flipped:
+          //  0x48...0x4F  0x40...0x47
+          //  0x08...0x0F  0x00...0x07
+          _writeCommand(0x20 | _function | 0x04);   // Set function, 0 0 1 DL N EXT=1 x x (Select Instr Set = 1)
+
+          _writeCommand(0x40 | 0x0F);               // COM/SEG directions 0 1 0 0 C1, C2, S1, S2  (Instr Set 1)
+                                                    // C1=1: Com1-8 -> Com8-1;   C2=1: Com9-16 -> Com16-9
+                                                    // S1=1: Seg1-40 -> Seg40-1; S2=1: Seg41-80 -> Seg80-41                                                    
+          wait_ms(5);                               // Wait to ensure completion or ST7070 fails to set Top/Bottom after reset..
+          
+          _writeCommand(0x20 | _function);          // Set function, EXT=0 (Select Instr Set = 0)
+        
+          break; // case ST7070 Controller
+          
+        default:  
+          //Unsupported feature for other controllers
+          break;              
+
+      } // end switch _ctrl     
+    
+      break; // end Bottom
+  } // end switch orient
+} // end setOrient()
+
+/** 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 TextLCD_Base::setBigFont(LCDBigFont lines) {
+
+  switch (lines) {
+    case None:
+      switch (_ctrl) {
+        case SSD1803_3V3 :      
+        case US2066_3V3 :      
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+          _writeCommand(0x1C);                      // Double Height, 0 0 0 1 UD2=1, UD1=1, X, DH'=0 (Ext Instr Set)
+                                                    // Default
+          _function = _function & ~0x04;            // Set function, 0 0 1 DL N DH=0 RE(0) IS=0 Select Instruction Set 0
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0        
+          break; // end US2066      
+
+        default:
+          break; // end default      
+      } // end switch _ctrl     
+      break; // end None      
+    
+    case TopLine:
+      if (_nr_rows < 2) return; //Sanity check  
+
+      switch (_ctrl) {
+        case SSD1803_3V3 :              
+        case US2066_3V3 :      
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+          _writeCommand(0x1C);                      // Double Height, 0 0 0 1 UD2=1, UD1=1, X, DH'=0 (Ext Instr Set)
+                                                    // Default
+          _function = _function | 0x04;             // Set function, 0 0 1 DL N DH=1 RE(0) IS=0 Select Instruction Set 0
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0        
+          break; // end US2066, SSD1803      
+
+        default:
+          break; // end default      
+      } // end switch _ctrl     
+      break; // end TopLine              
+
+    case CenterLine:
+      if (_nr_rows != 4) return; //Sanity check  
+          
+      switch (_ctrl) {
+        case SSD1803_3V3 :              
+        case US2066_3V3 :      
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+          _writeCommand(0x14);                      // Double Height, 0 0 0 1 UD2=0, UD1=1, X, DH'=0 (Ext Instr Set)
+                                                    // Default
+          _function = _function | 0x04;             // Set function, 0 0 1 DL N DH=1 RE(0) IS=0 Select Instruction Set 0
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0        
+          break; // end US2066, SSD1803      
+
+        default:
+          break; // end default      
+      } // end switch _ctrl        
+      break; // end CenterLine              
+
+    case BottomLine:
+      if (_nr_rows < 3) return; //Sanity check  
+          
+      switch (_ctrl) {
+        case SSD1803_3V3 :              
+        case US2066_3V3 :      
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+          if (_nr_rows == 3) {
+            _writeCommand(0x14);                      // Double Height, 0 0 0 1 UD2=0, UD1=1, X, DH'=0 (Ext Instr Set)
+          }  
+          else {
+            _writeCommand(0x10);                      // Double Height, 0 0 0 1 UD2=0, UD1=0, X, DH'=0 (Ext Instr Set)
+          }  
+          _function = _function | 0x04;             // Set function, 0 0 1 DL N DH=1 RE(0) IS=0 Select Instruction Set 0
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0        
+          break; // end US2066, SSD1803      
+
+        default:
+          break; // end default      
+      } // end switch _ctrl           
+      break; // end BottomLine          
+      
+    case TopBottomLine:
+      if (_nr_rows != 4) return; //Sanity check  
+      
+      switch (_ctrl) {
+        case SSD1803_3V3 :        
+        case US2066_3V3 :      
+          _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 X N BE RE(1) REV 
+                                                    // Select Extended Instruction Set
+          _writeCommand(0x18);                      // Double Height, 0 0 0 1 UD2=1, UD1=0, X, DH'=0 (Ext Instr Set)
+                                                    // Default
+          _function = _function | 0x04;             // Set function, 0 0 1 DL N DH=1 RE(0) IS=0 Select Instruction Set 0
+          _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS=0 Select Instruction Set 0
+                                                    // Select Std Instr set, Select IS=0        
+          break; // end US2066, SSD1803      
+
         default:
-            return 0x80 + (row * 0x40) + column;
-    }
+          break; // end default      
+      } // end switch _ctrl           
+      break; // end TopBottomLine          
+
+  } // end switch lines
+
+} // end setBigFont()
+
+
+/** 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 TextLCD_Base::setIcon(unsigned char idx, unsigned char data) {
+  // Blinking icons are enabled when a specific controlbit (BE) is set.
+  // The blinking pixels in the icons can be controlled by setting additional bits in the icon bitpattern.
+  // Icons are defined by a byte bitpattern. The P0..P5 form the Icon pattern for KS0073, and P0..P4 for KS0078
+  //     P7 P6 P5 P4 P3 P2 P1 P0 
+  // 0   B1 B0  0  0  1  1  1  0
+  // 1   B1 B0  1  1  0  0  0  1
+  //        .............
+  // 15  B1 B0  1  1  0  0  0  1
+  //
+  // Bit 6 and Bit 7 in the pattern will control the blinking mode when Blink is enabled through BE. 
+  //     B1 B0  Mode
+  //      0  0  No Blinking for this icon row
+  //      0  1  Enabled pixels in P5 will blink
+  //      1  x  Enabled pixels in P0..P5 will blink
+  //
+  // Note: the PCF2103 and PCF2113 use UDCs to set Icons 
+  //   3 x 8 rows x 5 bits = 120 bits Icons for Normal pattern (UDC 0..2) and
+  //   3 x 8 rows x 5 bits = 120 bits Icons for Blink pattern (UDC 4..6) 
+  // Note: the PCF2119 uses UDCs to set Icons 
+  //   4 x 8 rows x 5 bits = 160 bits Icons for Normal pattern (UDC 0..3) and
+  //   4 x 8 rows x 5 bits = 160 bits Icons for Blink pattern (UDC 4..7) 
+  
+  switch (_ctrl) {
+    case KS0073:
+    case KS0078:    
+       _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 DL N RE(1) BE LP 
+                                                 // Select Extended Instruction Set
+       _writeCommand(0x40 | (idx & 0x0F));       // Set Icon Address, mask Address to valid range (Ext Instr Set)
+
+       _writeData(data);                         // Set Icon pattern (Ext Instr Set)
+
+       _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N RE(0) DH REV Select Instruction Set 0
+                                                 // Select Std Instr set, Select IS=0        
+       break; // end KS0073, KS0078
+
+    case ST7032_3V3:
+    case ST7032_5V:
+       _writeCommand(0x20 | _function | 0x01);   // Set function,  0 0 1 DL N F 0 IS=1 Select Instr Set = 1              
+       _writeCommand(0x40 | (idx & 0x0F));       // Set Icon Address, mask Address to valid range (Instr Set 1)
+
+       _writeData(data & 0x1F);                  // Set Icon pattern, no blink support (Instr Set 1) 
+
+       _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N RE(0) DH REV Select Instruction Set 0
+                                                 // Select Std Instr set, Select IS=0        
+       break; // end ST7032
+
+    case ST7036_3V3:
+    case ST7036_5V:
+       _writeCommand(0x20 | _function | 0x01);   // Set function, 0 0 1 DL N DH IS2,IS1 = 01 (Select Instr Set = 1)    
+       _writeCommand(0x40 | (idx & 0x0F));       // Set Icon Address, mask Address to valid range (Instr Set 1)
+
+       _writeData(data & 0x1F);                  // Set Icon pattern, no blink support (Instr Set 1) 
+
+       _writeCommand(0x20 | _function);          // Set function, IS2,IS1 = 00 (Select Instr Set = 0)    
+                                                 // Select Std Instr set, Select IS=0        
+       break; // end ST7036
+
+    case SSD1803_3V3:                  
+//    case SSD1803_5V:                      
+       _writeCommand(0x20 | _function | 0x01);   // Set function, 0 0 1 DL N DH RE(0) IS 
+                                                 // Select Instruction Set 1
+       _writeCommand(0x40 | (idx & 0x0F));       // Set Icon Address, mask Address to valid range (Instr Set = 1)
+       _writeData(data);                         // Set Icon pattern (Instr Set = 1)
+
+       _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS
+                                                 // Select IS=0        
+       break; // end SSD1803      
+
+    case PCF2103_3V3:
+    case PCF2113_3V3:    
+    case PCF2119_3V3:        
+       // Store UDC/Icon pattern for PCF2103 and PCF2113: 
+       //   3 x 8 rows x 5 bits = 120 bits for Normal pattern (UDC 0..2) and
+       //   3 x 8 rows x 5 bits = 120 bits for Blink pattern (UDC 4..6) 
+       // Store UDC/Icon pattern for PCF2119: 
+       //   4 x 8 rows x 5 bits = 160 bits for Normal pattern (UDC 0..3) and
+       //   4 x 8 rows x 5 bits = 160 bits for Blink pattern (UDC 4..7)        
+       _writeCommand(0x40 | (idx & 0x3F));       //Set CG-RAM address, 8 sequential locations needed per UDC
+       _writeData(data);                         // Set Icon pattern (Instr Set = 1)
+       break; // case PCF2103_3V3 Controller
+                 
+    default:
+       break; // end default      
+  } // end switch _ctrl           
+  
+  //Select DD RAM again for current LCD controller and restore the addresspointer
+  int addr = getAddress(_column, _row);
+  _writeCommand(0x80 | addr);  
+         
+} // end setIcon()
+
+/** Clear Icons
+  *
+  * @param  none
+  * @return none
+  */
+  //@TODO Add support for 40x4 dual controller    
+void TextLCD_Base::clrIcon() {
+  // Icons are defined by a byte bitpattern. The P0..P5 form the Icon pattern for KS0073, and P0..P4 for KS0078
+  //     P7 P6 P5 P4 P3 P2 P1 P0 
+  // 0   B1 B0  0  0  0  0  0  0
+  // 1   B1 B0  0  0  0  0  0  0
+  //        .............
+  // 15  B1 B0  0  0  0  0  0  0
+  //
+  // Bit 6 and Bit 7 in the pattern will control the blinking mode when Blink is enabled through BE. 
+  //     B1 B0  Mode
+  //      0  0  No Blinking for this icon row
+  //      0  1  Enabled pixels in P5 will blink
+  //      1  x  Enabled pixels in P0..P5 will blink
+  //
+  // Note: the PCF2103 and PCF2113 use UDCs to set Icons 
+  //   3 x 8 rows x 5 bits = 120 bits Icons for Normal pattern (UDC 0..2) and
+  //   3 x 8 rows x 5 bits = 120 bits Icons for Blink pattern (UDC 4..6)  
+  // Note: the PCF2119 uses UDCs to set Icons 
+  //   4 x 8 rows x 5 bits = 160 bits Icons for Normal pattern (UDC 0..3) and
+  //   4 x 8 rows x 5 bits = 160 bits Icons for Blink pattern (UDC 4..7)  
+  int idx;
+  
+  switch (_ctrl) {
+    case KS0073:              
+    case KS0078:                  
+       _writeCommand(0x20 | _function_1);        // Set function, 0 0 1 DL N RE(1) BE LP 
+                                                 // Select Extended Instruction Set
+       for (idx=0; idx<16; idx++) { 
+         _writeCommand(0x40 | idx);              // Set Icon Address, mask Address to valid range (Ext Instr Set)
+         _writeData(0x00);                       // Clear Icon pattern (Ext Instr Set)
+       }  
+       _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N RE(0) DH REV Select Std Instruction Set
+                                                 // Select Std Instr set        
+       break; // end KS0073, KS0078      
+
+    case ST7032_3V3:
+    case ST7032_5V:
+       _writeCommand(0x20 | _function | 0x01);   // Set function,  0 0 1 DL N F 0 IS=1 Select Instr Set = 1              
+
+       for (idx=0; idx<16; idx++) { 
+         _writeCommand(0x40 | idx);              // Set Icon Address, mask Address to valid range (Instr Set 1)
+         _writeData(0x00);                       // Clear Icon pattern (Instr Set 1)
+       }  
+
+       _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N RE(0) DH REV Select Instruction Set 0
+                                                 // Select Std Instr set, Select IS=0        
+       break; // end ST7032
+
+    case ST7036_3V3:
+    case ST7036_5V:
+       _writeCommand(0x20 | _function | 0x01);   // Set function, 0 0 1 DL N DH IS2,IS1 = 01 (Select Instr Set = 1)    
+
+       for (idx=0; idx<16; idx++) { 
+         _writeCommand(0x40 | idx);              // Set Icon Address, mask Address to valid range (Instr Set 1)
+         _writeData(0x00);                       // Clear Icon pattern (Instr Set 1)
+       }  
+
+       _writeCommand(0x20 | _function);          // Set function, IS2,IS1 = 00 (Select Instr Set = 0)    
+                                                 // Select Std Instr set, Select IS=0        
+       break; // end ST7036
+
+    case SSD1803_3V3:                  
+//    case SSD1803_5V:                      
+       _writeCommand(0x20 | _function | 0x01);   // Set function, 0 0 1 DL N DH RE(0) IS 
+                                                 // Select Instruction Set 1
+       for (idx=0; idx<16; idx++) { 
+         _writeCommand(0x40 | idx);              // Set Icon Address, mask Address to valid range (Ext Instr Set)
+         _writeData(0x00);                       // Clear Icon pattern (Ext Instr Set)
+       }  
+       _writeCommand(0x20 | _function);          // Set function, 0 0 1 DL N DH RE(0) IS
+                                                 // Select IS=0        
+       break; // end SSD1803      
+
+     case PCF2103_3V3:
+     case PCF2113_3V3:         
+       // PCF2103 and PCF2113 use part of the UDC RAM to control Icons   
+       // Select CG RAM
+
+       _writeCommand(0x40 | (0 * 8)); //Set CG-RAM address, 8 sequential locations needed per UDC
+       // Store UDC/Icon pattern: 
+       //   3 x 8 rows x 5 bits = 120 bits for Normal pattern (UDC 0..2) and
+       for (int i=0; i<(3 * 8); i++) {
+//       _writeData(0x1F);  // All On
+         _writeData(0x00);  // All Off            
+       }
+
+       _writeCommand(0x40 | (4 * 8)); //Set CG-RAM address, 8 sequential locations needed per UDC
+       //   3 x 8 rows x 5 bits = 120 bits for Blink pattern (UDC 4..6) 
+       for (int i=0; i<(3 * 8); i++) {
+//       _writeData(0x1F);  // All On
+         _writeData(0x00);  // All Off            
+       }
+       break; // case PCF2103_3V3 Controller
+
+     case PCF2119_3V3:              
+       // PCF2119 uses part of the UDC RAM to control Icons   
+       // Select CG RAM
+
+       _writeCommand(0x40 | (0 * 8)); //Set CG-RAM address, 8 sequential locations needed per UDC
+       // Store UDC/Icon pattern: 
+       //   4 x 8 rows x 5 bits = 160 bits for Normal pattern (UDC 0..3) and
+       for (int i=0; i<(4 * 8); i++) {
+//       _writeData(0x1F);  // All On
+         _writeData(0x00);  // All Off            
+       }
+
+       _writeCommand(0x40 | (4 * 8)); //Set CG-RAM address, 8 sequential locations needed per UDC
+       //   4 x 8 rows x 5 bits = 160 bits for Blink pattern (UDC 4..7) 
+       for (int i=0; i<(4 * 8); i++) {
+//       _writeData(0x1F);  // All On
+         _writeData(0x00);  // All Off            
+       }
+       break; // case PCF2119_3V3 Controller
+
+    default:
+       break; // end default      
+  } // end switch _ctrl           
+  
+  //Select DD RAM again for current LCD controller and restore the addresspointer
+  int addr = getAddress(_column, _row);
+  _writeCommand(0x80 | addr);
+} //end 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 TextLCD_Base::setInvert(bool invertOn) {
+  
+  if (invertOn) {
+    // Controllers that support Invert
+    switch (_ctrl) {   
+      case KS0073:        
+      case KS0078:        
+        _function = _function | 0x01;                                  // Enable Invert
+        _writeCommand(0x20 | _function);                               // Activate Invert (Std Instr Set)
+        break;
+      case SSD1803_3V3 :      
+//      case SSD1803_5V :                 
+      case US2066_3V3:
+//      case USS2066_5V:
+        _function_1 = _function_1 | 0x01;                              // Enable Invert 
+                                                                       // Set function, 0 0 1 DL N BE RE(1) REV  (SSD1803)
+                                                                       // Set function, 0 0 1 X  N BE RE(1) REV  (US2066)    
+        _writeCommand(0x20 | _function_1);                             // Activate Invert (Ext Instr Set)
+        _writeCommand(0x20 | _function);                               // Return to Std Instr Set                            
+        break;
+      default:  
+        //Unsupported feature for other controllers
+        break;              
+    } // end switch  
+  }  
+  else {
+    // Controllers that support Invert
+    switch (_ctrl) {    
+      case KS0073:
+      case KS0078:
+        _function = _function & ~0x01;                                 // Disable Invert
+        _writeCommand(0x20 | _function);                               // Disable Invert (Std Instr Set)
+        break;
+      case SSD1803_3V3 :      
+//      case SSD1803_5V :                 
+      case US2066_3V3:
+//      case USS2066_5V:
+        _function_1 = _function_1 & ~0x01;                             // Disable Invert 
+                                                                       // Set function, 0 0 1 DL N BE RE(1) REV  (SSD1803)
+                                                                       // Set function, 0 0 1 X  N BE RE(1) REV  (US2066)                                                                                                                                              
+        _writeCommand(0x20 | _function_1);                             // Activate Invert (Ext Instr Set)
+        _writeCommand(0x20 | _function);                               // Return to Std Instr Set                            
+        break;
+
+      default:  
+        //Unsupported feature for other controllers
+        break;              
+    } // end switch  
+  }
+} // end setInvert()
+
+//--------- End TextLCD_Base -----------
+
+
+//--------- Start TextLCD Bus -----------
+
+/* 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::TextLCD(PinName rs, PinName e,
+                 PinName d4, PinName d5, PinName d6, PinName d7,
+                 LCDType type, PinName bl, PinName e2, LCDCtrl ctrl) :
+                 TextLCD_Base(type, ctrl), 
+                 _rs(rs), _e(e), _d(d4, d5, d6, d7) {
+
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+
+  // The hardware Enable2 pin is only needed for LCD40x4. Test and make sure whether it exists or not to prevent illegal access.
+  if (e2 != NC) {
+    _e2 = new DigitalOut(e2);   //Construct new pin 
+    _e2->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Enable pin       
+    _e2 = NULL;                 //Construct dummy pin     
+  }  
+
+  _init(_LCD_DL_4);   // Set Datalength to 4 bit for mbed bus interfaces
+}
+
+/** Destruct a TextLCD interface for using regular mbed pins
+  *
+  * @param  none
+  * @return none
+  */ 
+TextLCD::~TextLCD() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
+   if (_e2 != NULL) {delete _e2;}  // E2 pin
+}
+
+/** Set E pin (or E2 pin)
+  * Used for mbed pins, I2C bus expander or SPI shiftregister
+  * Default PinName value for E2 is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins
+  *   @param  value true or false
+  *   @return none 
+  */
+void TextLCD::_setEnable(bool value) {
+
+  if(_ctrl_idx==_LCDCtrl_0) {
+    if (value) {
+      _e  = 1;    // Set E bit 
+    }  
+    else { 
+      _e  = 0;    // Reset E bit  
+    }  
+  }    
+  else { 
+    if (value) {
+      if (_e2 != NULL) {_e2->write(1);}  //Set E2 bit
+    }  
+    else { 
+      if (_e2 != NULL) {_e2->write(0);}  //Reset E2 bit     
+    }  
+  }    
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD::_setRS(bool value) {
+
+  if (value) {
+    _rs  = 1;    // Set RS bit 
+  }  
+  else  {
+    _rs  = 0;    // Reset RS bit 
+  }  
+}    
+
+/** Set BL pin
+  * Used for mbed pins, I2C bus expander or SPI shiftregister
+  * Default PinName value is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins
+  *   @param  value true or false
+  *   @return none  
+  */
+void TextLCD::_setBL(bool value) {
+
+  if (value) {
+    if (_bl != NULL) {_bl->write(1);}  //Set BL bit
+  }  
+  else { 
+    if (_bl != NULL) {_bl->write(0);}  //Reset BL bit  
+  }  
+}    
+
+// Place the 4bit data on the databus
+// Used for mbed pins, I2C bus expander or SPI shifregister
+void TextLCD::_setData(int value) {
+  _d = value & 0x0F;   // Write Databits 
+}    
+
+//----------- End TextLCD ---------------
+
+
+//--------- Start TextLCD_I2C -----------
+#if(LCD_I2C == 1) /* I2C Expander PCF8574/MCP23008 */
+/** Create a TextLCD interface using an I2C PC8574 (or PCF8574A) or MCP23008 portexpander
+  *
+  * @param i2c             I2C Bus
+  * @param deviceAddress   I2C slave address (PCF8574, PCF8574A or MCP23008, default = 0x40)
+  * @param type            Sets the panel size/addressing mode (default = LCD16x2)
+  * @param ctrl            LCD controller (default = HD44780)    
+  */
+TextLCD_I2C::TextLCD_I2C(I2C *i2c, char deviceAddress, LCDType type, LCDCtrl ctrl) :
+                         TextLCD_Base(type, ctrl), 
+                         _i2c(i2c){
+                              
+  _slaveAddress = deviceAddress & 0xFE;
+
+  // Setup the I2C bus
+  // The max bitrate for PCF8574 is 100kbit, the max bitrate for MCP23008 is 400kbit, 
+  _i2c->frequency(100000);
+  
+#if (MCP23008==1)
+  // MCP23008 portexpander Init
+  _writeRegister(IODIR,   0x00);  // All pins are outputs
+  _writeRegister(IPOL,    0x00);  // No reverse polarity on inputs
+  _writeRegister(GPINTEN, 0x00);  // No interrupt on change of input pins
+  _writeRegister(DEFVAL,  0x00);  // Default value to compare against for interrupts
+  _writeRegister(INTCON,  0x00);  // No interrupt on changes, compare against previous pin value 
+  _writeRegister(IOCON,   0x20);  // b1=0 - Interrupt polarity active low  
+                                  // b2=0 - Interrupt pin active driver output  
+                                  // b4=0 - Slew rate enable on SDA
+                                  // b5=0 - Auto-increment on registeraddress                                  
+                                  // b5=1 - No auto-increment on registeraddress => needed for performance improved I2C expander mode
+  _writeRegister(GPPU,    0x00);  // No Pullup 
+//               INTF             // Interrupt flags read (Read-Only)
+//               INTCAP           // Captured inputpins at time of interrupt (Read-Only)   
+//  _writeRegister(GPIO,    0x00);  // Output/Input pins   
+//  _writeRegister(OLAT,    0x00);  // Output Latch  
+    
+  // Init the portexpander bus
+  _lcd_bus = D_LCD_BUS_DEF;
+  
+  // write the new data to the portexpander
+  _writeRegister(GPIO, _lcd_bus);      
+#else
+  // PCF8574 of PCF8574A portexpander
+
+  // Init the portexpander bus
+  _lcd_bus = D_LCD_BUS_DEF;
+
+  // write the new data to the portexpander
+  _i2c->write(_slaveAddress, &_lcd_bus, 1);    
+#endif
+
+  _init(_LCD_DL_4);   // Set Datalength to 4 bit for all serial expander interfaces
 }
 
-int TextLCD::columns() {
-    switch (_type) {
-        case LCD20x4:
-        case LCD20x2:
-            return 20;
-        case LCD16x2:
-        case LCD16x2B:
-        default:
-            return 16;
-    }
+// Set E bit (or E2 bit) in the databus shadowvalue
+// Used for mbed I2C bus expander
+void TextLCD_I2C::_setEnableBit(bool value) {
+
+  if(_ctrl_idx==_LCDCtrl_0) {
+    if (value) {
+      _lcd_bus |= D_LCD_E;     // Set E bit 
+    }  
+    else {                    
+      _lcd_bus &= ~D_LCD_E;    // Reset E bit                     
+    }  
+  }
+  else {
+    if (value) {
+      _lcd_bus |= D_LCD_E2;    // Set E2 bit 
+    }  
+    else {
+      _lcd_bus &= ~D_LCD_E2;   // Reset E2bit                     
+    }  
+  }    
+}    
+
+// Set E pin (or E2 pin)
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_I2C::_setEnable(bool value) {
+
+  // Place the E or E2 bit data on the databus shadowvalue
+  _setEnableBit(value);
+
+#if (MCP23008==1)
+  // MCP23008 portexpander
+  
+  // write the new data to the portexpander
+  _writeRegister(GPIO, _lcd_bus);      
+#else
+  // PCF8574 of PCF8574A portexpander
+
+  // write the new data to the I2C portexpander
+  _i2c->write(_slaveAddress, &_lcd_bus, 1);    
+#endif
+}    
+
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_I2C::_setRS(bool value) {
+
+  if (value) {
+    _lcd_bus |= D_LCD_RS;    // Set RS bit 
+  }  
+  else {                    
+    _lcd_bus &= ~D_LCD_RS;   // Reset RS bit                     
+  }
+
+#if (MCP23008==1)
+  // MCP23008 portexpander
+  
+  // write the new data to the portexpander
+  _writeRegister(GPIO, _lcd_bus);      
+#else
+  // PCF8574 of PCF8574A portexpander
+
+  // write the new data to the I2C portexpander
+  _i2c->write(_slaveAddress, &_lcd_bus, 1);    
+#endif                  
+}    
+
+// Set BL pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_I2C::_setBL(bool value) {
+
+  if (value) {
+    _lcd_bus |= D_LCD_BL;    // Set BL bit 
+  }  
+  else {                    
+    _lcd_bus &= ~D_LCD_BL;   // Reset BL bit                     
+  }
+  
+#if (MCP23008==1)
+  // MCP23008 portexpander
+  
+  // write the new data to the portexpander
+  _writeRegister(GPIO, _lcd_bus);      
+#else
+  // PCF8574 of PCF8574A portexpander
+
+  // write the new data to the I2C portexpander
+  _i2c->write(_slaveAddress, &_lcd_bus, 1);    
+#endif                 
+}    
+
+
+// Place the 4bit data in the databus shadowvalue
+// Used for mbed I2C bus expander
+void TextLCD_I2C::_setDataBits(int value) {
+
+  // Set bit by bit to support any mapping of expander portpins to LCD pins 
+  if (value & 0x01){
+    _lcd_bus |= D_LCD_D4;   // Set Databit 
+  }  
+  else { 
+    _lcd_bus &= ~D_LCD_D4;  // Reset Databit
+  }  
+
+  if (value & 0x02){
+    _lcd_bus |= D_LCD_D5;   // Set Databit 
+  }  
+  else {
+    _lcd_bus &= ~D_LCD_D5;  // Reset Databit
+  }  
+
+  if (value & 0x04) {
+    _lcd_bus |= D_LCD_D6;   // Set Databit 
+  }  
+  else {                    
+    _lcd_bus &= ~D_LCD_D6;  // Reset Databit
+  }  
+
+  if (value & 0x08) {
+    _lcd_bus |= D_LCD_D7;   // Set Databit 
+  }  
+  else {
+    _lcd_bus &= ~D_LCD_D7;  // Reset Databit
+  }                                      
+}    
+
+// Place the 4bit data on the databus
+// Used for mbed pins, I2C bus expander or SPI shifregister
+void TextLCD_I2C::_setData(int value) {
+
+  // Place the 4bit data on the databus shadowvalue
+  _setDataBits(value); 
+  
+  // Place the 4bit data on the databus
+#if (MCP23008==1)
+  // MCP23008 portexpander
+  
+  // write the new data to the portexpander
+  _writeRegister(GPIO, _lcd_bus);      
+#else
+  // PCF8574 of PCF8574A portexpander
+
+  // write the new data to the I2C portexpander
+  _i2c->write(_slaveAddress, &_lcd_bus, 1);    
+#endif                 
+}    
+
+// Write data to MCP23008 I2C portexpander
+// Used for mbed I2C bus expander
+void TextLCD_I2C::_writeRegister (int reg, int value) {
+  char data[] = {reg, value};
+    
+  _i2c->write(_slaveAddress, data, 2); 
+}
+
+//New optimized
+//Test faster _writeByte 0.11s vs 0.27s for a 20x4 fillscreen (PCF8574)
+//Test faster _writeByte 0.14s vs 0.34s for a 20x4 fillscreen (MCP23008)
+
+// Write a byte using I2C
+void TextLCD_I2C::_writeByte(int value) {
+  char data[6];
+  
+#if (MCP23008==1)
+  // MCP23008 portexpander
+
+  data[0] = GPIO;                 // set registeraddres
+                                  // Note: auto-increment is disabled so all data will go to GPIO register
+  
+  _setEnableBit(true);            // set E 
+  _setDataBits(value >> 4);       // set data high  
+  data[1] = _lcd_bus;
+  
+  _setEnableBit(false);           // clear E   
+  data[2] = _lcd_bus;
+  
+  _setEnableBit(true);            // set E   
+  _setDataBits(value);            // set data low    
+  data[3] = _lcd_bus;
+  
+  _setEnableBit(false);           // clear E     
+  data[4] = _lcd_bus;
+  
+  // write the packed data to the I2C portexpander
+  _i2c->write(_slaveAddress, data, 5);    
+#else
+  // PCF8574 of PCF8574A portexpander
+  
+  _setEnableBit(true);            // set E 
+  _setDataBits(value >> 4);       // set data high  
+  data[0] = _lcd_bus;
+  
+  _setEnableBit(false);           // clear E   
+  data[1] = _lcd_bus;
+  
+  _setEnableBit(true);            // set E   
+  _setDataBits(value);            // set data low    
+  data[2] = _lcd_bus;
+  
+  _setEnableBit(false);           // clear E     
+  data[3] = _lcd_bus;
+  
+  // write the packed data to the I2C portexpander
+  _i2c->write(_slaveAddress, data, 4);    
+#endif
+}
+
+#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
+   *
+   * @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::TextLCD_SPI(SPI *spi, PinName cs, LCDType type, LCDCtrl ctrl) :
+                         TextLCD_Base(type, ctrl), 
+                         _spi(spi),        
+                         _cs(cs) {      
+        
+  // Init cs
+  _cs = 1;  
+
+  // Setup the spi for 8 bit data, low steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+  _spi->format(8,0);
+  _spi->frequency(500000);    
+  //_spi.frequency(1000000);    
+
+  // Init the portexpander bus
+  _lcd_bus = D_LCD_BUS_DEF;
+  
+  // write the new data to the portexpander
+  _cs = 0;  
+  _spi->write(_lcd_bus);   
+  _cs = 1;  
+
+  _init(_LCD_DL_4);   // Set Datalength to 4 bit for all serial expander interfaces
+}
+
+// Set E pin (or E2 pin)
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI::_setEnable(bool value) {
+
+  if(_ctrl_idx==_LCDCtrl_0) {
+    if (value) {
+      _lcd_bus |= D_LCD_E;     // Set E bit 
+    }  
+    else {                    
+      _lcd_bus &= ~D_LCD_E;    // Reset E bit                     
+    }  
+  }
+  else {
+    if (value) {
+      _lcd_bus |= D_LCD_E2;    // Set E2 bit 
+    }  
+    else {
+      _lcd_bus &= ~D_LCD_E2;   // Reset E2 bit                     
+    }  
+  }
+                  
+  // write the new data to the SPI portexpander
+  _cs = 0;  
+  _spi->write(_lcd_bus);   
+  _cs = 1;    
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister and SPI_N
+void TextLCD_SPI::_setRS(bool value) {
+
+  if (value) {
+    _lcd_bus |= D_LCD_RS;    // Set RS bit 
+  }  
+  else {                    
+    _lcd_bus &= ~D_LCD_RS;   // Reset RS bit                     
+  }
+     
+  // write the new data to the SPI portexpander
+  _cs = 0;  
+  _spi->write(_lcd_bus);   
+  _cs = 1;     
+}    
+
+// Set BL pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI::_setBL(bool value) {
+
+  if (value) {
+    _lcd_bus |= D_LCD_BL;    // Set BL bit 
+  }  
+  else {
+    _lcd_bus &= ~D_LCD_BL;   // Reset BL bit                     
+  }
+      
+  // write the new data to the SPI portexpander
+  _cs = 0;  
+  _spi->write(_lcd_bus);   
+  _cs = 1;      
+}    
+
+// Place the 4bit data on the databus
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI::_setData(int value) {
+
+  // Set bit by bit to support any mapping of expander portpins to LCD pins
+  if (value & 0x01) {
+    _lcd_bus |= D_LCD_D4;   // Set Databit 
+  }  
+  else {                    
+    _lcd_bus &= ~D_LCD_D4;  // Reset Databit                     
+  }
+  
+  if (value & 0x02) {
+    _lcd_bus |= D_LCD_D5;   // Set Databit 
+  }  
+  else {
+    _lcd_bus &= ~D_LCD_D5;  // Reset Databit                     
+  }
+  
+  if (value & 0x04) {
+    _lcd_bus |= D_LCD_D6;   // Set Databit 
+  }  
+  else {
+    _lcd_bus &= ~D_LCD_D6;  // Reset Databit                     
+  }
+  
+  if (value & 0x08) {
+    _lcd_bus |= D_LCD_D7;   // Set Databit 
+  }  
+  else {
+    _lcd_bus &= ~D_LCD_D7;  // Reset Databit
+  }  
+                    
+  // write the new data to the SPI portexpander
+  _cs = 0;  
+  _spi->write(_lcd_bus);   
+  _cs = 1;       
+}    
+
+#endif /* SPI Expander SN74595          */
+//---------- End TextLCD_SPI ------------
+
+
+//--------- Start TextLCD_I2C_N ---------
+#if(LCD_I2C_N == 1)  /* Native I2C */
+
+ /** Create a TextLCD interface using a controller with native I2C interface
+   *
+   * @param i2c             I2C Bus
+   * @param deviceAddress   I2C slave address (default = 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::TextLCD_I2C_N(I2C *i2c, char deviceAddress, LCDType type, PinName bl, LCDCtrl ctrl) : 
+                               TextLCD_Base(type, ctrl), 
+
+                               _i2c(i2c){
+  
+  _slaveAddress = deviceAddress & 0xFE;
+  
+  // Setup the I2C bus
+  // The max bitrate for ST7032i is 400kbit, lets stick to default here
+  _i2c->frequency(100000);
+
+       
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+  
+  //Sanity check
+  if (_ctrl & LCD_C_I2C) {
+    _init(_LCD_DL_8);  // Set Datalength to 8 bit for all native serial interfaces      
+  }
+  else {
+    error("Error: LCD Controller type does not support native I2C interface\n\r");           
+  }
+}
+
+TextLCD_I2C_N::~TextLCD_I2C_N() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
+}
+
+// Not used in this mode
+void TextLCD_I2C_N::_setEnable(bool value) {
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister and native I2C or SPI
+void TextLCD_I2C_N::_setRS(bool value) {
+// The controlbyte defines the meaning of the next byte. This next byte can either be data or command.
+// Start Slaveaddress+RW  b7 b6 b5 b4 b3 b2 b1 b0   b7...........b0  Stop
+//                        Co RS RW  0  0  0  0  0   command or data
+//
+//   C0=1 indicates that another controlbyte will follow after the next data or command byte 
+//   RS=1 means that next byte is data, RS=0 means that next byte is command
+//   RW=0 means write to controller. RW=1 means that controller will be read from after the next command. 
+//        Many native I2C controllers dont support this option and it is not used by this lib. 
+//
+
+  if (value) {
+    _controlbyte = 0x40; // Next byte is data, No more control bytes will follow
+  }
+  else {
+    _controlbyte = 0x00; // Next byte is command, No more control bytes will follow     
+  }
+}    
+
+// Set BL pin
+void TextLCD_I2C_N::_setBL(bool value) {
+    if (_bl) {
+        _bl->write(value);   
+    }    
+}    
+    
+// Not used in this mode
+void TextLCD_I2C_N::_setData(int value) {
+}    
+
+// Write a byte using I2C
+void TextLCD_I2C_N::_writeByte(int value) {
+// The controlbyte defines the meaning of the next byte. This next byte can either be data or command.
+// Start Slaveaddress+RW  b7 b6 b5 b4 b3 b2 b1 b0   b7...........b0  Stop
+//                        Co RS RW  0  0  0  0  0   command or data
+//
+//   C0=1 indicates that another controlbyte will follow after the next data or command byte 
+//   RS=1 means that next byte is data, RS=0 means that next byte is command
+//   RW=0 means write to controller. RW=1 means that controller will be read from after the next command. 
+//        Many native I2C controllers dont support this option and it is not used by this lib. 
+//
+  char data[] = {_controlbyte, value};
+    
+#if(LCD_I2C_ACK==1)
+//Controllers that support ACK
+  _i2c->write(_slaveAddress, data, 2); 
+#else  
+//Controllers that dont support ACK
+//Note: This may be issue with some mbed platforms that dont fully/correctly support I2C byte operations.
+  _i2c->start(); 
+  _i2c->write(_slaveAddress);   
+  _i2c->write(data[0]); 
+  _i2c->write(data[1]);     
+  _i2c->stop();   
+#endif  
+}
+#endif /* Native I2C */
+//-------- End TextLCD_I2C_N ------------
+
+
+//--------- Start TextLCD_SPI_N ---------
+#if(LCD_SPI_N == 1) /* Native SPI bus     */
+ /** Create a TextLCD interface using a controller with a 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::TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type, PinName bl, LCDCtrl ctrl) :
+                             TextLCD_Base(type, ctrl), 
+                             _spi(spi),        
+                             _cs(cs),
+                             _rs(rs) {      
+        
+  // Init CS
+  _cs = 1;
+
+  // Setup the spi for 8 bit data, high steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate    
+//  _spi->format(8,3);  
+//  _spi->frequency(500000); 
+//  _spi->frequency(1000000);    
+  
+  // Setup the spi for 8 bit data, low steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+  _spi->format(8,0);
+//  _spi->frequency(500000); 
+  _spi->frequency(1000000);    
+    
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+
+  //Sanity check
+  if (_ctrl & LCD_C_SPI4) {
+    _init(_LCD_DL_8);   // Set Datalength to 8 bit for all native serial interfaces
+                        // ST7070 must set datalength to 8 bits!
+  }
+  else {
+    error("Error: LCD Controller type does not support native SPI4 interface\n\r");           
+  }
+}
+
+TextLCD_SPI_N::~TextLCD_SPI_N() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
 }
 
-int TextLCD::rows() {
-    switch (_type) {
-        case LCD20x4:
-            return 4;
-        case LCD16x2:
-        case LCD16x2B:
-        case LCD20x2:
-        default:
-            return 2;
-    }
+// Not used in this mode
+void TextLCD_SPI_N::_setEnable(bool value) {
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister, SPI_N
+void TextLCD_SPI_N::_setRS(bool value) {
+    _rs = value;
+}    
+
+// Set BL pin
+void TextLCD_SPI_N::_setBL(bool value) {
+    if (_bl) {
+        _bl->write(value);   
+    }    
+}    
+
+// Not used in this mode
+void TextLCD_SPI_N::_setData(int value) {
+}    
+
+// Write a byte using SPI
+void TextLCD_SPI_N::_writeByte(int value) {
+    _cs = 0;
+    wait_us(1);
+    _spi->write(value);
+    wait_us(1);
+    _cs = 1;
+}
+#endif /* Native SPI bus     */  
+//-------- End TextLCD_SPI_N ------------
+
+
+//-------- Start TextLCD_SPI_N_3_8 --------
+#if(LCD_SPI_N_3_8 == 1) /* Native SPI bus     */
+
+ /** 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::TextLCD_SPI_N_3_8(SPI *spi, PinName cs, LCDType type, PinName bl, LCDCtrl ctrl) :
+                                     TextLCD_Base(type, ctrl), 
+                                     _spi(spi),        
+                                     _cs(cs) {      
+
+  // Init CS
+  _cs = 1;
+
+  // Setup the spi for 8 bit data, high steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+//  _spi->format(8,3);  
+//  _spi->frequency(500000);    
+//  _spi->frequency(1000000);    
+
+  // Setup the spi for 8 bit data, low steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+  _spi->format(8,0);
+//  _spi->frequency(500000); 
+  _spi->frequency(1000000);    
+  
+  
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+
+  //Sanity check
+  if (_ctrl & LCD_C_SPI3_8) { 
+    _init(_LCD_DL_8);  // Set Datalength to 8 bit for all native serial interfaces   
+  }
+  else {
+    error("Error: LCD Controller type does not support native SPI3 8 bits interface\n\r");           
+  }
+}
+
+TextLCD_SPI_N_3_8::~TextLCD_SPI_N_3_8() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_8::_setEnable(bool value) {
+}    
+
+// Used for mbed pins, I2C bus expander or SPI shiftregister, SPI_N
+//   RS=1 means that next byte is data, RS=0 means that next byte is command
+void TextLCD_SPI_N_3_8::_setRS(bool value) {
+  
+  if (value) {
+    _controlbyte = 0x01; // Next byte is data, No more control bytes will follow
+  }
+  else {
+    _controlbyte = 0x00; // Next byte is command, No more control bytes will follow     
+  }
+}      
+  
+// Set BL pin
+void TextLCD_SPI_N_3_8::_setBL(bool value) {
+    if (_bl) {
+        _bl->write(value);   
+    }    
+}    
+
+// Not used in this mode
+void TextLCD_SPI_N_3_8::_setData(int value) {
+}    
+
+// Write a byte using SPI3 8 bits mode (ST7070)
+void TextLCD_SPI_N_3_8::_writeByte(int value) {
+    
+  if (_controlbyte == 0x00) { // Byte is command 
+    _cs = 0;
+    wait_us(1);
+    _spi->write(value);
+    wait_us(1);
+    _cs = 1;
+  }  
+  else {                      // Byte is data 
+    // Select Extended Instr Set
+    _cs = 0;
+    wait_us(1);
+    _spi->write(0x20 | _function | 0x04);   // Set function, 0 0 1 DL N EXT=1 x x (Select Instr Set = 1));
+    wait_us(1);
+    _cs = 1;     
+
+    wait_us(40);                            // Wait until command has finished...    
+        
+    // Set Count to 1 databyte
+    _cs = 0;
+    wait_us(1);    
+    _spi->write(0x80);                      // Set display data length, 1 L6 L5 L4 L3 L2 L1 L0 (Instr Set = 1)
+    wait_us(1);
+    _cs = 1;
+
+    wait_us(40);    
+                
+    // Write 1 databyte     
+    _cs = 0;
+    wait_us(1);    
+    _spi->write(value);                     // Write data (Instr Set = 1)
+    wait_us(1);
+    _cs = 1;         
+
+    wait_us(40);    
+        
+    // Select Standard Instr Set    
+    _cs = 0;
+    wait_us(1);    
+    _spi->write(0x20 | _function);          // Set function, 0 0 1 DL N EXT=0 x x (Select Instr Set = 0));
+    wait_us(1);
+    _cs = 1;     
+  }  
+}
+#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 a native SPI3 9 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 = AIP31068) 
+   */       
+TextLCD_SPI_N_3_9::TextLCD_SPI_N_3_9(SPI *spi, PinName cs, LCDType type, PinName bl, LCDCtrl ctrl) :
+                                     TextLCD_Base(type, ctrl), 
+                                     _spi(spi),        
+                                     _cs(cs) {      
+
+  // Init CS
+  _cs = 1;
+
+  // Setup the spi for 9 bit data, high steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+  _spi->format(9,3);  
+  _spi->frequency(1000000);    
+  
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+
+  //Sanity check
+  if (_ctrl & LCD_C_SPI3_9) { 
+    _init(_LCD_DL_8);  // Set Datalength to 8 bit for all native serial interfaces   
+  }
+  else {
+    error("Error: LCD Controller type does not support native SPI3 9 bits interface\n\r");           
+  }
+}
+
+TextLCD_SPI_N_3_9::~TextLCD_SPI_N_3_9() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_9::_setEnable(bool value) {
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI_N_3_9::_setRS(bool value) {
+// The controlbits define the meaning of the next byte. This next byte can either be data or command.
+//   b8  b7...........b0 
+//   RS  command or data
+//
+//   RS=1 means that next byte is data, RS=0 means that next byte is command
+//
+
+  if (value) {
+    _controlbyte = 0x01; // Next byte is data
+  }
+  else {
+    _controlbyte = 0x00; // Next byte is command
+  }  
+}    
+
+// Set BL pin
+void TextLCD_SPI_N_3_9::_setBL(bool value) {
+    if (_bl) {
+        _bl->write(value);   
+    }    
+}    
+
+// Not used in this mode
+void TextLCD_SPI_N_3_9::_setData(int value) {
+}    
+
+// Write a byte using SPI3 9 bits mode
+void TextLCD_SPI_N_3_9::_writeByte(int value) {
+    _cs = 0;
+    wait_us(1);
+    _spi->write( (_controlbyte << 8) | (value & 0xFF));
+    wait_us(1);
+    _cs = 1;
 }
+#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 a native SPI3 10 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 = AIP31068) 
+   */       
+TextLCD_SPI_N_3_10::TextLCD_SPI_N_3_10(SPI *spi, PinName cs, LCDType type, PinName bl, LCDCtrl ctrl) :
+                                       TextLCD_Base(type, ctrl), 
+                                       _spi(spi),        
+                                       _cs(cs) {      
+        
+  // Init CS
+  _cs = 1;
+
+  // Setup the spi for 10 bit data, low steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+  _spi->format(10,0);
+  _spi->frequency(1000000);    
+  
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+
+  //Sanity check
+  if (_ctrl & LCD_C_SPI3_10) {
+     _init(_LCD_DL_8);  // Set Datalength to 8 bit for all native serial interfaces            
+  }
+  else {
+    error("Error: LCD Controller type does not support native SPI3 10 bits interface\n\r");           
+  }
+}
+
+TextLCD_SPI_N_3_10::~TextLCD_SPI_N_3_10() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_10::_setEnable(bool value) {
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI_N_3_10::_setRS(bool value) {
+// The controlbits define the meaning of the next byte. This next byte can either be data or command.
+//   b9 b8  b7...........b0 
+//   RS RW  command or data
+//
+//   RS=1 means that next byte is data, RS=0 means that next byte is command
+//   RW=0 means that next byte is writen, RW=1 means that next byte is read (not used in this lib)
+//
+
+  if (value) {
+    _controlbyte = 0x02; // Next byte is data
+  }
+  else {
+    _controlbyte = 0x00; // Next byte is command
+  }  
+}    
+
+// Set BL pin
+void TextLCD_SPI_N_3_10::_setBL(bool value) {
+    if (_bl) {
+        _bl->write(value);   
+    }    
+}    
+
+// Not used in this mode
+void TextLCD_SPI_N_3_10::_setData(int value) {
+}    
+
+// Write a byte using SPI3 10 bits mode
+void TextLCD_SPI_N_3_10::_writeByte(int value) {
+    _cs = 0;
+    wait_us(1);
+    _spi->write( (_controlbyte << 8) | (value & 0xFF));
+    wait_us(1);
+    _cs = 1;
+}
+#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     */
+
+ /** Create a TextLCD interface using a controller with a 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::TextLCD_SPI_N_3_16(SPI *spi, PinName cs, LCDType type, PinName bl, LCDCtrl ctrl) :
+                                       TextLCD_Base(type, ctrl), 
+                                       _spi(spi),        
+                                       _cs(cs) {      
+        
+  // Init CS
+  _cs = 1;
+
+  // Setup the spi for 8 bit data, low steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+  _spi->format(8,0);
+  _spi->frequency(1000000);    
+  
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+
+  //Sanity check
+  if (_ctrl & LCD_C_SPI3_16) {
+     _init(_LCD_DL_8);  // Set Datalength to 8 bit for all native serial interfaces            
+  }
+  else {
+    error("Error: LCD Controller type does not support native SPI3 16 bits interface\n\r");           
+  }
+}
+
+TextLCD_SPI_N_3_16::~TextLCD_SPI_N_3_16() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_16::_setEnable(bool value) {
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI_N_3_16::_setRS(bool value) {
+// The 16bit mode is split in 2 bytes. The first byte is for synchronisation and controlbits. The controlbits define the meaning of the next byte.
+// The 8 actual bits represent either a data or a command byte.
+//   b15 b14 b13 b12 b11 b10  b9  b8 - b7 b6 b5 b4 b3 b2 b1 b0 
+//     1   1   1   1   1  RW  RS   0   d7 d6 d5 d4 d3 d2 d1 d0
+//
+//   RS=1 means that next byte is data, RS=0 means that next byte is command
+//   RW=0 means that next byte is writen, RW=1 means that next byte is read (not used in this lib)
+//
+
+  if (value) {
+    _controlbyte = 0xFA; // Next byte is data
+  }
+  else {
+    _controlbyte = 0xF8; // Next byte is command
+  }  
+}    
+
+// Set BL pin
+void TextLCD_SPI_N_3_16::_setBL(bool value) {
+    if (_bl) {
+        _bl->write(value);   
+    }    
+}    
+
+// Not used in this mode
+void TextLCD_SPI_N_3_16::_setData(int value) {
+}    
+   
+// Write a byte using SPI3 16 bits mode
+void TextLCD_SPI_N_3_16::_writeByte(int value) {
+    _cs = 0;
+    wait_us(1);
+
+    _spi->write(_controlbyte);
+
+    _spi->write(value);     
+
+    wait_us(1);
+    _cs = 1;
+}
+#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 a native SPI3 24 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 = SSD1803) 
+   */       
+TextLCD_SPI_N_3_24::TextLCD_SPI_N_3_24(SPI *spi, PinName cs, LCDType type, PinName bl, LCDCtrl ctrl) :
+                                       TextLCD_Base(type, ctrl), 
+                                       _spi(spi),        
+                                       _cs(cs) {      
+        
+  // Init CS
+  _cs = 1;
+
+  // Setup the spi for 8 bit data, high steady state clock,
+  // rising edge capture, with a 500KHz or 1MHz clock rate  
+  _spi->format(8,3);
+  _spi->frequency(1000000);    
+  
+  // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
+  if (bl != NC) {
+    _bl = new DigitalOut(bl);   //Construct new pin 
+    _bl->write(0);              //Deactivate    
+  }
+  else {
+    // No Hardware Backlight pin       
+    _bl = NULL;                 //Construct dummy pin     
+  }  
+
+  //Sanity check
+  if (_ctrl & LCD_C_SPI3_24) {
+    _init(_LCD_DL_8);  // Set Datalength to 8 bit for all native serial interfaces      
+  }
+  else {
+    error("Error: LCD Controller type does not support native SPI3 24 bits interface\n\r");           
+  }
+}
+
+TextLCD_SPI_N_3_24::~TextLCD_SPI_N_3_24() {
+   if (_bl != NULL) {delete _bl;}  // BL pin
+}
+
+// Not used in this mode
+void TextLCD_SPI_N_3_24::_setEnable(bool value) {
+}    
+
+// Set RS pin
+// Used for mbed pins, I2C bus expander or SPI shiftregister
+void TextLCD_SPI_N_3_24::_setRS(bool value) {
+// The 24bit mode is split in 3 bytes. The first byte is for synchronisation and controlbits. The controlbits define the meaning of the next two bytes.
+// Each byte encodes 4 actual bits. The 8 actual bits represent either a data or a command byte.
+//   b23 b22 b21 b20 b19 b18 b17 b16 -  b15 b14 b13 b12 b11 b10 b9 b8 - b7 b6 b5 b4 b3 b2 b1 b0 
+//     1   1   1   1   1  RW  RS   0     d0  d1  d2  d3   0   0  0  0   d4 d5 d6 d7  0  0  0  0
+//
+//   RS=1 means that next byte is data, RS=0 means that next byte is command
+//   RW=0 means that next byte is writen, RW=1 means that next byte is read (not used in this lib)
+//
+// Note: SPI3_24 expects LSB first. This is inconsistent with regular SPI convention (and hardware) that sends MSB first.
+
+  if (value) {
+    _controlbyte = 0xFA; // Next byte is data
+  }
+  else {
+    _controlbyte = 0xF8; // Next byte is command
+  }   
+}    
+
+// Set BL pin
+void TextLCD_SPI_N_3_24::_setBL(bool value) {
+    if (_bl) {
+        _bl->write(value);   
+    }    
+}    
+
+// Not used in this mode
+void TextLCD_SPI_N_3_24::_setData(int value) {
+}    
+
+//Mapping table to flip the bits around cause SPI3_24 expects LSB first.
+const uint8_t map3_24[16] = {0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0};
+    
+// Write a byte using SPI3 24 bits mode
+void TextLCD_SPI_N_3_24::_writeByte(int value) {
+    _cs = 0;
+    wait_us(1);
+    _spi->write(_controlbyte);
+
+    //Map and send the LSB nibble
+    _spi->write( map3_24[value & 0x0F]);     
+
+    //Map and send the MSB nibble
+    _spi->write( map3_24[(value >> 4) & 0x0F]);     
+
+    wait_us(1);
+    _cs = 1;
+}
+#endif /* Native SPI bus     */  
+//------- End TextLCD_SPI_N_3_24 ----------