IPN ESIME ZACATENCO
TextLCD con soporte para el Módulo Arduino I2C basado en el PCF8574AT y para el SPI utilizando el SN74595
Dependents: FRDM-KL46Z_Deshidratador FRDM-KL46Z_LCD_Test FRDM-KL46Z_LCD_Test FRDM-KL46Z_Pasos ... more
Fork of
TextLCD
by 
Wim Huiskamp
Diff: TextLCD.cpp
- Revision:
- 32:59c4b8f648d4
- Parent:
- 31:ef31cd8a00d1
- Child:
- 33:900a94bc7585
--- a/TextLCD.cpp Sun Jun 29 14:55:50 2014 +0000
+++ b/TextLCD.cpp Fri Aug 22 19:50:49 2014 +0000
@@ -11,6 +11,7 @@
* 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)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -41,14 +42,20 @@
/** Some sample User Defined Chars 5x7 dots */
-const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ
-const char udc_0e[] = {0x00, 0x00, 0x0E, 0x13, 0x15, 0x19, 0x0E, 0x00}; //ø
-const char udc_ao[] = {0x0E, 0x0A, 0x0E, 0x01, 0x0F, 0x11, 0x0F, 0x00}; //å
-const char udc_AE[] = {0x0F, 0x14, 0x14, 0x1F, 0x14, 0x14, 0x17, 0x00}; //Æ
-const char udc_0E[] = {0x0E, 0x13, 0x15, 0x15, 0x15, 0x19, 0x0E, 0x00}; //Ø
-const char udc_Ao[] = {0x0E, 0x0A, 0x0E, 0x11, 0x1F, 0x11, 0x11, 0x00}; //Å
-const char udc_PO[] = {0x04, 0x0A, 0x0A, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Open
-const char udc_PC[] = {0x1C, 0x10, 0x08, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Closed
+//const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ
+//const char udc_0e[] = {0x00, 0x00, 0x0E, 0x13, 0x15, 0x19, 0x0E, 0x00}; //ø
+//const char udc_ao[] = {0x0E, 0x0A, 0x0E, 0x01, 0x0F, 0x11, 0x0F, 0x00}; //å
+//const char udc_AE[] = {0x0F, 0x14, 0x14, 0x1F, 0x14, 0x14, 0x17, 0x00}; //Æ
+//const char udc_0E[] = {0x0E, 0x13, 0x15, 0x15, 0x15, 0x19, 0x0E, 0x00}; //Ø
+//const char udc_Ao[] = {0x0E, 0x0A, 0x0E, 0x11, 0x1F, 0x11, 0x11, 0x00}; //Å
+//const char udc_PO[] = {0x04, 0x0A, 0x0A, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Open
+//const char udc_PC[] = {0x1C, 0x10, 0x08, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Closed
+
+//const char udc_alpha[] = {0x00, 0x00, 0x0D, 0x12, 0x12, 0x12, 0x0D, 0x00}; //alpha
+//const char udc_ohm[] = {0x0E, 0x11, 0x11, 0x11, 0x0A, 0x0A, 0x1B, 0x00}; //ohm
+//const char udc_sigma[] = {0x1F, 0x08, 0x04, 0x02, 0x04, 0x08, 0x1F, 0x00}; //sigma
+//const char udc_pi[] = {0x1F, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x00}; //pi
+//const char udc_root[] = {0x07, 0x04, 0x04, 0x04, 0x14, 0x0C, 0x04, 0x00}; //root
const char udc_0[] = {0x18, 0x14, 0x12, 0x11, 0x12, 0x14, 0x18, 0x00}; // |>
const char udc_1[] = {0x03, 0x05, 0x09, 0x11, 0x09, 0x05, 0x03, 0x00}; // <|
@@ -91,6 +98,8 @@
//const char udc_ch_dy[] = {0x1f, 0x11, 0x11, 0x1f, 0x11, 0x11, 0x11, 0x1F}; // Day (kana)
//const char udc_ch_mi[] = {0x0C, 0x0a, 0x11, 0x1f, 0x09, 0x09, 0x09, 0x13}; // minute (kana)
+const char udc_None[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+const char udc_All[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
/** Create a TextLCD_Base interface
*
@@ -127,10 +136,10 @@
_ctrl_idx=_LCDCtrl_0; // Select primary controller
_initCtrl(); // Init primary controller
- // Reset Cursor location
- _row=0;
- _column=0;
-
+ // 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
@@ -139,7 +148,10 @@
* Note: some configurations are commented out because they have not yet been tested due to lack of hardware
*/
void TextLCD_Base::_initCtrl() {
-
+ int _bias_lines=0; // Set Bias and lines (Instr Set 1), temporary variable.
+ int _lines=0; // Set lines (Ext Instr Set), temporary variable.
+// int _function_x=0; // Set ext. function (Ext Instr Set), temporary variable.
+
this->_setRS(false); // command mode
wait_ms(20); // Wait 20ms to ensure powered up
@@ -157,8 +169,8 @@
// Device specific initialisations: DC/DC converter to generate VLCD or VLED, number of lines etc
switch (_ctrl) {
+
case KS0078:
-
// Initialise Display configuration
switch (_type) {
case LCD8x1: //8x1 is a regular 1 line display
@@ -167,126 +179,102 @@
case LCD16x1:
// case LCD20x1:
case LCD24x1:
- _writeCommand(0x20); // Function set 001 DL N RE(0) DH REV
- // DL=0 (4 bits bus)
- // N=0 (1 line)
- // RE=0 (Dis. Extended Regs, special mode for KS0078)
- // DH=0 (Disp shift=disable, special mode for KS0078)
- // REV=0 (Reverse=Normal, special mode for KS0078)
+ _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 KS0078
-// case LCD12x3D1: // Special mode for KS0078
-// case LCD12x4D: // Special mode for KS0078
-// case LCD16x3D:
-// case LCD16x4D:
+// 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 LCD16x4D: // Special mode for KS0078
// case LCD24x3D: // Special mode for KS0078
// case LCD24x3D1: // Special mode for KS0078
case LCD24x4D: // Special mode for KS0078
-
- _writeCommand(0x2A); // Function set 001 DL N RE(0) DH REV
- // DL=0 (4 bits bus)
- // N=1 (Dont care for KS0078 in 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 = 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
- _writeCommand(0x2E); // Function set 001 DL N RE(1) BE 0
- // DL=0 (4 bits bus)
- // N=1 (Dont care for KS0078 in 4-line mode)
- // RE=1 (Ena Extended Regs, special mode for KS0078)
- // BE=1 (Blink Enable, CG/SEG RAM, special mode for KS0078)
- // X=0 (Reverse, special mode for KS0078)
-
- _writeCommand(0x09); // Ext Function set 0000 1 FW BW NW
- // FW=0 (5-dot font, special mode for KS0078)
- // BW=0 (Cur BW invert disable, special mode for KS0078)
- // NW=1 (4 Line, special mode for KS0078)
-
- _writeCommand(0x2A); // Function set 001 DL N RE(0) DH REV
- // DL=0 (4 bits bus)
- // N=1 (Dont care for KS0078 in 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_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;
default:
// All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
- _writeCommand(0x28); // Function set 001 DL N RE(0) DH REV
- // DL=0 (4 bits bus)
- // Note: 4 bit mode is ignored for native SPI and I2C devices
- // N=1 (2 lines)
- // RE=0 (Dis. Extended Regs, special mode for KS0078)
- // DH=0 (Disp shift=disable, special mode for KS0078)
- // REV=0 (Reverse=Normal, special mode for KS0078)
+ _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
-
- // 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:
- _writeCommand(0x21); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Select Instruction Set = 1
- //Note: 4 bit mode is ignored for native SPI and I2C devices
-
- _writeCommand(0x1C); //Internal OSC frequency adjustment Framefreq=183HZ, bias will be 1/4
-
- _writeCommand(0x73); //Contrast control low byte
-
- _writeCommand(0x57); //booster circuit is turned on. /ICON display off. /Contrast control high byte
- wait_ms(10); // Wait 10ms to ensure powered up
-
- _writeCommand(0x6C); //Follower control
- wait_ms(10); // Wait 10ms to ensure powered up
-
- _writeCommand(0x20); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Return to Instruction Set = 0
- //Note: 4 bit mode is ignored for native SPI and I2C devices
- break;
-
- case LCD12x3D: // Special mode for PCF2116
- case LCD12x3D1: // Special mode for PCF2116
- 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
- _writeCommand(0x29); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1
- //Note: 4 bit mode is ignored for native SPI and I2C devices
-
- _writeCommand(0x1C); //Internal OSC frequency adjustment Framefreq=183HZ, bias will be 1/4
-
- _writeCommand(0x73); //Contrast control low byte
-
- _writeCommand(0x57); //booster circuit is turned on. /ICON display off. /Contrast control high byte
- wait_ms(10); // Wait 10ms to ensure powered up
-
- _writeCommand(0x6C); //Follower control
- wait_ms(10); // Wait 10ms to ensure powered up
-
- _writeCommand(0x28); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0
- //Note: 4 bit mode is ignored for native SPI and I2C devices
- } // switch type
-
- break; // case ST7032_3V3 Controller
-
case ST7032_5V:
- // ST7032 controller: Disable Voltage booster for VLCD. VDD=5V
+ // ST7032 controller: Disable Voltage booster for VLCD. VDD=5V
// Initialise Display configuration
switch (_type) {
@@ -295,56 +283,135 @@
// case LCD12x1:
case LCD16x1:
// case LCD20x1:
- case LCD24x1:
- _writeCommand(0x21); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Select Instruction Set = 1
- //Note: 4 bit mode is ignored for native SPI and I2C devices
-
- _writeCommand(0x1C); //Internal OSC frequency adjustment Framefreq=183HZ, bias will be 1/4
-
- _writeCommand(0x73); //Contrast control low byte
+ 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;
- _writeCommand(0x53); //booster circuit is turned off. /ICON display off. /Contrast control high byte
- wait_ms(10); // Wait 10ms to ensure powered up
-
- _writeCommand(0x6C); //Follower control
- wait_ms(10); // Wait 10ms to ensure powered up
-
- _writeCommand(0x20); //FUNCTION SET 4 bit, N=0 1-line display mode, 5*7dot, Return to Instruction Set = 0
- //Note: 4 bit mode is ignored for native SPI and I2C devices
+ 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 LCD24x4D: // Special mode for KS0078
+ error("Error: LCD Controller type does not support this Display type\n\r");
break;
- case LCD12x3D: // Special mode for PCF2116
- case LCD12x3D1: // Special mode for PCF2116
+ 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 Instruction Set = 1
+
+ _writeCommand(0x1C); // Internal OSC frequency adjustment Framefreq=183HZ, Bias will be 1/4 (IS=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)
+ // Saved to allow contrast change at later time
+ }
+ else {
+ _icon_power = 0x00; // Icon display off, 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
- _writeCommand(0x29); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1
- //Note: 4 bit mode is ignored for native SPI and I2C devices
+ // 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
+
- _writeCommand(0x1C); //Internal OSC frequency adjustment Framefreq=183HZ, bias will be 1/4
+ // init special features
+ _writeCommand(0x20 | _function | 0x01); // Set function, IS2,IS1 = 01 (Select Instruction Set = 1)
+ _writeCommand(0x10 | _bias_lines); // Set Bias and 1,2 or 3 lines (Instr Set 1)
- _writeCommand(0x73); //Contrast control low byte
-
- _writeCommand(0x53); //booster circuit is turned off. /ICON display off. /Contrast control high byte
- wait_ms(10); // Wait 10ms to ensure powered up
+ _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 = 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 = 0x00; // Set Icon, Booster, Contrast High bits, 0 1 0 1 Ion=0 Bon=0 C5 C4 (Instr Set 1)
+ }
- _writeCommand(0x6C); //Follower control
- wait_ms(10); // Wait 10ms to ensure powered up
-
- _writeCommand(0x28); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0
- //Note: 4 bit mode is ignored for native SPI and I2C devices
- } // switch type
-
- break; // case ST7032_5V Controller
+ _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
- case ST7036:
- // ST7036 controller: Initialise Voltage booster for VLCD. VDD=5V
- // Note: supports 1,2 or 3 lines
-
+ _writeCommand(0x20 | _function); // Set function, IS2,IS1 = 00 (Select Instruction Set = 0)
+
+ break; // case ST7036_3V3 Controller
+ // case ST7036_5V 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
@@ -352,102 +419,167 @@
// case LCD12x1:
case LCD16x1:
case LCD24x1:
- _writeCommand(0x21); // 4-bit Databus, N=0 1 Line, DH=0 5x7font, IS2,IS1 = 01 Select Instruction Set = 1
- wait_ms(30); // > 26,3ms
- _writeCommand(0x14); // Bias: 1/5, 1 or 2-Lines LCD
-// _writeCommand(0x15); // Bias: 1/5, 3-Lines LCD
- wait_ms(30); // > 26,3ms
- _writeCommand(0x55); // Icon off, Booster on, Set Contrast C5, C4
- wait_ms(30); // > 26,3ms
- _writeCommand(0x6D); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0
- wait_ms(200); // > 200ms!
- _writeCommand(0x78); // Set Contrast C3, C2, C1, C0
- wait_ms(30); // > 26,3ms
- _writeCommand(0x20); // Return to Instruction Set = 0
- wait_ms(50);
+ _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 = 0x00; // 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;
-#if(0)
-// case LCD12x3:
- case LCD16x3:
- _writeCommand(0x29); // 4-bit Databus, N=1 2 Line, DH=0 5x7font, IS2,IS1 = 01 Select Instruction Set = 1
- wait_ms(30); // > 26,3ms
-// _writeCommand(0x14); // Bias: 1/5, 1 or 2-Lines LCD
- _writeCommand(0x15); // Bias: 1/5, 3-Lines LCD
- wait_ms(30); // > 26,3ms
- _writeCommand(0x55); // Icon off, Booster on, Set Contrast C5, C4
- wait_ms(30); // > 26,3ms
- _writeCommand(0x6D); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0
- wait_ms(200); // > 200ms!
- _writeCommand(0x78); // Set Contrast C3, C2, C1, C0
- wait_ms(30); // > 26,3ms
- _writeCommand(0x28); // Return to Instruction Set = 0
- wait_ms(50);
+
+ case LCD12x3D: // Special mode for KS0078, ST7036 and PCF21XX
+// case LCD12x3D1: // Special mode for KS0078 and PCF21XX
+ case LCD16x3D: // Special mode for KS0078 and ST7036
+// 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 = 0x00; // 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;
-#endif
- case LCD12x3D: // Special mode for PCF2116
- case LCD12x3D1: // Special mode for PCF2116
- case LCD12x4D: // Special mode for PCF2116
- case LCD24x4D: // Special mode for KS0078
+ 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 = 0x08; // 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 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(0x29); // 4-bit Databus, N=1 2 Line, DH=0 5x7font, IS2,IS1 = 01 Select Instruction Set = 1
- wait_ms(30); // > 26,3ms
- _writeCommand(0x14); // Bias: 1/5, 2-Lines LCD
-// _writeCommand(0x15); // Bias: 1/5, 3-Lines LCD
- wait_ms(30); // > 26,3ms
- _writeCommand(0x55); // Icon off, Booster on, Set Contrast C5, C4
- wait_ms(30); // > 26,3ms
- _writeCommand(0x6D); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0
- wait_ms(200); // > 200ms!
- _writeCommand(0x78); // Set Contrast C3, C2, C1, C0
- wait_ms(30); // > 26,3ms
- _writeCommand(0x28); // Return to Instruction Set = 0
- wait_ms(50);
- } // switch type
+ _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
+ // IS=0
- break; // case ST7036 Controller
+ _function_1 = 0x08; // 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
+ // 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 | 0x02); // Set function, 0 0 1 DL N BE RE(1) REV
+ // Select Extended Instruction 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(0x08 | _lines); // Set ext function 0 0 0 0 1 FW BW NW 1,2,3 or 4 lines (Ext Instr Set)
+
+ _writeCommand(0x06); // Set ext entry mode, 0 0 0 0 0 1 BDC=1 COM1-31, BDS=0 SEG100-1 "Bottom View" (Ext Instr Set)
+// _writeCommand(0x04); // Set ext entry mode, 0 0 0 0 0 1 BDC=0 COM31-1, BDS=0 SEG100-1 "Top View" (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)
+ // 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 | 0x02); // 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 PCF2113_3V3:
- // PCF2113 controller: Initialise Voltage booster for VLCD. VDD=3V3
- // 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 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, members of the PCF21XX family support different numbers of rows/columns. Not all can support 3 or 4 rows.
- // Note4: See datasheet, you can also disable VGen by connecting Vo to VDD. VLCD will then be used directly as LCD voltage.
- // Note5: PCF2113 is different wrt to VLCD generator !
- // Note6: See datasheet, the PCF21XX-C and PCF21XX-K use a non-standard character set. This may result is strange text when not corrected..
-
+ // 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 DL=0 4 bit, 0, M=0 1-line/12 chars display mode, SL=1
+ // Note: 4 bit mode is ignored for I2C mode
case LCD24x1:
- _writeCommand(0x21); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode, extended IS
- //Note: 4 bit mode is ignored for I2C mode
- _writeCommand(0x9F); //Set VLCD A : VGen for Chars and Icons
- _writeCommand(0xDF); //Set VLCD B : VGen for Icons Only
- _writeCommand(0x20); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode
-// _writeCommand(0x24); //FUNCTION SET 4 bit, M=1 2-line/12 chars display mode, standard IS
-
- wait_ms(10); // Wait 10ms to ensure powered up
+ _function = 0x00; // FUNCTION SET DL=0 4 bit, 0, M=0 1-line/24 chars display mode, SL=0
+ // Note: 4 bit mode is ignored for I2C mode
break;
//Tested OK for PCF2113
-//Note: PCF2113 is different wrt to VLCD generator !
case LCD12x2:
- _writeCommand(0x21); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode, extended IS
- //Note: 4 bit mode is ignored for I2C mode
- _writeCommand(0x9F); //Set VLCD A : VGen for Chars and Icons
- _writeCommand(0xDF); //Set VLCD B : VGen for Icons Only
-// _writeCommand(0x20); //FUNCTION SET 4 bit, M=0 1-line/24 chars display mode
- _writeCommand(0x24); //FUNCTION SET 4 bit, M=1 2-line/12 chars display mode, standard IS
-
- wait_ms(10); // Wait 10ms to ensure powered up
+ _function = 0x04; // FUNCTION SET DL=0 4 bit, 0, M=1 2-line/12 chars display mode, SL=0
break;
default:
@@ -456,35 +588,47 @@
} // 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 S1=1, S2=0 (2x multiplier)
+ _writeCommand(0x40 | (LCD_PCF2_S12 & 0x03)); // HV GEN (Instr. Set 1) 0100 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 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: Initialise Voltage booster for VLCD. VDD=3V3
- // 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 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, members of the PCF21XX family support different numbers of rows/columns. Not all can support 3 or 4 rows.
- // Note4: See datasheet, you can also disable VGen by connecting Vo to VDD. VLCD will then be used directly as LCD voltage.
- // Note5: PCF2113 is different wrt to VLCD generator !
- // Note6: See datasheet, the PCF21XX-C and PCF21XX-K use a non-standard character set. This may result is strange text when not corrected..
-
+ // 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 4 bit, N=0/M=0 1-line/24 chars display mode, G=1 VGen on
+ _writeCommand(0x22); //FUNCTION SET 4 bit, N/M=0 1-line/24 chars display mode, G=1 Vgen on
//Note: 4 bit mode is ignored for I2C mode
wait_ms(10); // Wait 10ms to ensure powered up
break;
- case LCD12x3D:
- case LCD12x3D1:
- case LCD12x4D:
+ case LCD12x3D: // Special mode for KS0078 and PCF21XX
+ case LCD12x3D1: // Special mode for PCF21XX
+ case LCD12x4D: // Special mode for PCF21XX:
_writeCommand(0x2E); //FUNCTION SET 4 bit, N=1/M=1 4-line/12 chars display mode, G=1 VGen on
//Note: 4 bit mode is ignored for I2C mode
wait_ms(10); // Wait 10ms to ensure powered up
@@ -494,7 +638,8 @@
_writeCommand(0x2A); //FUNCTION SET 4 bit, N=1/M=0 2-line/24 chars display mode, G=1 VGen on
//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;
@@ -503,8 +648,105 @@
break; // case PCF2116_3V3 Controller
-// case PCF21XX_5V:
- // PCF21XX controller: No Voltage generator for VLCD. VDD=5V
+
+//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 4 bit, N/M=0 1-line/24 chars display mode
+ //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 4 bit, N=1/M=1 4-line/12 chars display mode 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 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 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 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:
@@ -519,9 +761,9 @@
// PWR = 1 (DC/DC On/Off)
//@Todo: This may be needed to enable a warm reboot
- //_writeCommand(0x13); // DC/DC off
+ //_writeCommand(0x13); // Char mode, DC/DC off
//wait_ms(10); // Wait 10ms to ensure powered down
- _writeCommand(0x17); // DC/DC on
+ _writeCommand(0x17); // Char mode, DC/DC on
wait_ms(10); // Wait 10ms to ensure powered up
// Initialise Display configuration
@@ -538,9 +780,9 @@
// FT=00 (00 = Engl/Jap, 01 = WestEur1, 10 = Engl/Russian, 11 = WestEur2
break;
- case LCD12x3D: // Special mode for PCF2116
- case LCD12x3D1: // Special mode for PCF2116
- case LCD12x4D: // Special mode for PCF2116
+ case LCD12x3D: // Special mode for KS0078 and PCF21XX
+ case LCD12x3D1: // Special mode for PCF21XX
+ case LCD12x4D: // Special mode for PCF21XX:
case LCD24x4D: // Special mode for KS0078
error("Error: LCD Controller type does not support this Display type\n\r");
break;
@@ -553,14 +795,13 @@
// F=0 (5x7 dots font)
// FT=00 (00 = Engl/Jap, 01 = WestEur1, 10 = Engl/Russian, 11 = WestEur2
-
break;
} // switch type
- break; // case WS0100 Controller
+ break; // case WS0010 Controller
default:
- // Devices fully compatible to HD44780 that do not use any DC/DC Voltage converters but external VLCD
+ // 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) {
@@ -571,30 +812,33 @@
// case LCD20x1:
case LCD24x1:
// case LCD40x1:
- _writeCommand(0x20); // Function set 001 DL N F - -
+ _function = 0x00; // Function set 001 DL N F - -
// DL=0 (4 bits bus)
// N=0 (1 line)
// F=0 (5x7 dots font)
+ _writeCommand(0x20 | _function);
break;
-
-// case LCD12x3D: // Special mode for PCF2116
-// case LCD12x3D1: // Special mode for PCF2116
-// case LCD12x4D: // Special mode for PCF2116
+ 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 and ST7036
+// 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:
- _writeCommand(0x28); // Function set 001 DL N F - -
+ _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)
-
+ // - (Don't care)
+ _writeCommand(0x20 | _function);
break;
} // switch type
@@ -604,9 +848,9 @@
// 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(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
@@ -658,7 +902,7 @@
}
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.
+ // 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
@@ -673,8 +917,7 @@
// 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);
-
+ setAddress(column, row);
}
@@ -735,7 +978,6 @@
// Enable is Low
}
-
// Write a byte using the 4-bit interface
void TextLCD_Base::_writeByte(int value) {
@@ -753,7 +995,6 @@
wait_us(1); // Datahold time
// Enable is Low
-
}
// Write a command byte to the LCD controller
@@ -777,37 +1018,9 @@
}
-#if (0)
-// This is the original _address() method.
+// 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) {
- 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:
- default:
- return 0x80 + (row * 0x40) + column;
- }
-}
-#endif
-
-
-// This replaces the original _address() method.
-// 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);
}
@@ -821,7 +1034,6 @@
* @param row The vertical position from the top, indexed from 0
* @param return The memoryaddress of screen column and row location
*
- * Note: some configurations are commented out because they have not yet been tested due to lack of hardware
*/
int TextLCD_Base::getAddress(int column, int row) {
@@ -855,10 +1067,17 @@
case LCD_T_C:
// LCD16x1C is a special layout of LCD8x2
- if (column<8)
+#if(1)
+ 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
@@ -867,7 +1086,7 @@
case LCD_T_D:
- //Alternate addressing mode for 3 and 4 row displays (except 40x4). Used by PCF21XX, KS0078
+ //Alternate addressing mode for 3 and 4 row displays (except 40x4). Used by PCF21XX, KS0078, ST7036, SSD1803
//The 4 available rows start at a hardcoded address.
//Displays top rows when less than four are used.
switch (row) {
@@ -885,7 +1104,7 @@
}
case LCD_T_D1:
- //Alternate addressing mode for 3 row displays. Used by PCF21XX, KS0078
+ //Alternate addressing mode for 3 row displays. Used by PCF21XX, 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) {
@@ -936,10 +1155,43 @@
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
}
@@ -1132,6 +1384,146 @@
_writeCommand(0x80 | addr);
}
+
+/** 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;
+
+ #if(0)
+ //not yet tested
+ 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;
+ #endif
+
+ default:
+ //Unsupported feature for other controllers
+ break;
+
+ } // end switch
+
+}
+
+
+/** 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) {
+ static int _tmp_contrast = LCD_DEF_CONTRAST;
+
+ if (powerOn) {
+ // Switch on
+ setMode(DispOn);
+
+ // Try to set contrast=0
+ _tmp_contrast = _contrast; // Temp. save current contrast
+ setContrast(0); // Contrast 0
+
+ // Controllers that supports specific Power Down mode
+ switch (_ctrl) {
+
+// case PCF2113_3V3 :
+// case PCF2119_3V3 :
+// case ST7032_3V3 :
+// case ST7032_5V :
+//@todo
+
+ case SSD1803_3V3 :
+// case SSD1803_5V :
+ _writeCommand(0x20 | _function_1 | 0x02); // Select Ext Instr Set
+ _writeCommand(0x03); // Power Down
+ _writeCommand(0x20 | _function); // Select Std Instr Set
+ break;
+
+ case KS0078:
+//@todo
+ break;
+
+ default:
+ //Unsupported feature for other controllers
+ break;
+ } // end switch
+ }
+ else {
+ // Switch off
+ setMode(DispOff);
+
+ // Try to restore contrast
+ setContrast(_tmp_contrast); // Contrast
+
+ // Controllers that support specific Power Down mode
+ switch (_ctrl) {
+
+// case PCF2113_3V3 :
+// case PCF2119_3V3 :
+// case ST7032_3V3 :
+// case ST7032_5V :
+//@todo
+
+ case SSD1803_3V3 :
+// case SSD1803_5V :
+ _writeCommand(0x20 | _function_1 | 0x02); // Select Ext Instr Set
+ _writeCommand(0x02); // Power On
+ _writeCommand(0x20 | _function); // Select Std Instr Set
+ break;
+
+ case KS0078:
+//@todo
+ break;
+
+ default:
+ //Unsupported feature for other controllers
+ break;
+ } // end switch
+
+ }
+
+}
+
//--------- End TextLCD_Base -----------
@@ -1268,7 +1660,7 @@
// Setup the I2C bus
// The max bitrate for PCF8574 is 100kbit, the max bitrate for MCP23008 is 400kbit,
-// _i2c->frequency(100000);
+ _i2c->frequency(100000);
#if (MCP23008==1)
// MCP23008 portexpander Init
@@ -1457,14 +1849,22 @@
*/
TextLCD_I2C_N::TextLCD_I2C_N(I2C *i2c, char deviceAddress, LCDType type, PinName bl, LCDCtrl ctrl) :
TextLCD_Base(type, ctrl),
- _i2c(i2c){
+
+// _i2c(i2c){
+ _i2c(i2c), _ps(p20) {
+//Test
+ // Init PS
+ wait_us(500);
+ _ps = 0;
+ wait_us(250);
+
_slaveAddress = deviceAddress & 0xFE;
// Setup the I2C bus
// The max bitrate for ST7032i is 400kbit, lets stick to default here
_i2c->frequency(100000);
-// _i2c->frequency(50000);
+
// The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access.
if (bl != NC) {
@@ -1539,7 +1939,17 @@
//
char data[] = {_controlbyte, value};
+#if(LCD_I2C_ACK==1)
+//Controllers that support ACK
_i2c->write(_slaveAddress, data, 2);
+#else
+//Controllers that dont support ACK
+ _i2c->start();
+ _i2c->write(_slaveAddress);
+ _i2c->write(data[0]);
+ _i2c->write(data[1]);
+ _i2c->stop();
+#endif
}
//-------- End TextLCD_I2C_N ------------
@@ -1559,6 +1969,9 @@
_spi(spi),
_cs(cs) {
+ // Init cs
+ _setCS(true);
+
// 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);
@@ -1711,6 +2124,9 @@
_cs(cs),
_rs(rs) {
+ // 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);
@@ -1773,7 +2189,7 @@
-#if(0)
+#if(1)
//Code checked out on logic analyser. Not yet tested on hardware..
//-------- Start TextLCD_SPI_N_3_9 --------
@@ -1789,11 +2205,22 @@
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) {
-
+// _cs(cs) {
+
+ _cs(cs), _ps(p20) {
+
+ // Init PS
+ wait_us(500);
+ _ps = 0;
+ wait_us(250);
+
+ // Init CS
+ _cs = 1;
+
// Setup the spi for 9 bit data, low steady state clock,
// rising edge capture, with a 500KHz or 1MHz clock rate
- _spi->format(9,0);
+// _spi->format(9,0);
+ _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.
@@ -1866,9 +2293,7 @@
#endif
-#if(0)
-//Code checked out on logic analyser. Not yet tested on hardware..
-
+#if(1)
//------- Start TextLCD_SPI_N_3_10 --------
/** Create a TextLCD interface using a controller with a native SPI3 10 bits interface
@@ -1884,6 +2309,9 @@
_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);
@@ -1957,4 +2385,213 @@
}
//------- End TextLCD_SPI_N_3_10 ----------
+#endif
+
+#if(0)
+//Code to be checked out on logic analyser. Not yet tested on hardware..
+
+//------- Start TextLCD_SPI_N_3_16 --------
+
+ /** 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();
+ }
+ 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;
+}
+
+//------- End TextLCD_SPI_N_3_16 ----------
+#endif
+
+#if(1)
+//Code to be checked out on logic analyser. Not yet tested on hardware..
+
+//------- Start TextLCD_SPI_N_3_24 --------
+
+ /** 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, 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_24) {
+ _init();
+ }
+ 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;
+}
+
+//------- End TextLCD_SPI_N_3_24 ----------
#endif
\ No newline at end of file