Wim Huiskamp
Updated for more display types. Fixed memoryaddress confusion in address() method. Added new getAddress() method. Added support for UDCs, Backlight control and other features such as control through I2C and SPI port expanders and controllers with native I2C and SPI interfaces. Refactored to fix issue with pins that are default declared as NC.
Dependents: GPSDevice TestTextLCD SD to Flash Data Transfer DrumMachine ... more
Fork of
TextLCD
by 
Simon Ford
Example
Hello World! for the TextLCD
#include "mbed.h"
#include "TextLCD.h"
// Host PC Communication channels
Serial pc(USBTX, USBRX); // tx, rx
// I2C Communication
I2C i2c_lcd(p28,p27); // SDA, SCL
// SPI Communication
SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK
//TextLCD lcd(p15, p16, p17, p18, p19, p20); // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=HD44780
//TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, 74595 expander, CS pin, LCD Type
TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type
//TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, Device Type
//TextLCD_SPI_N lcd(&spi_lcd, p8, p9); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032_3V3
//TextLCD_I2C_N lcd(&i2c_lcd, ST7032_SA, TextLCD::LCD16x2, NC, TextLCD::ST7032_3V3); // I2C bus, Slaveaddress, LCD Type, BL=NC, LCDTCtrl=ST7032_3V3
int main() {
pc.printf("LCD Test. Columns=%d, Rows=%d\n\r", lcd.columns(), lcd.rows());
for (int row=0; row<lcd.rows(); row++) {
int col=0;
pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
// lcd.putc('-');
lcd.putc('0' + row);
for (col=1; col<lcd.columns()-1; col++) {
lcd.putc('*');
}
pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));
lcd.putc('+');
}
// Show cursor as blinking character
lcd.setCursor(TextLCD::CurOff_BlkOn);
// Set and show user defined characters. A maximum of 8 UDCs are supported by the HD44780.
// They are defined by a 5x7 bitpattern.
lcd.setUDC(0, (char *) udc_0); // Show |>
lcd.putc(0);
lcd.setUDC(1, (char *) udc_1); // Show <|
lcd.putc(1);
}
Handbook page
More info is here
TextLCD.cpp
- Committer:
- wim
- Date:
- 2015-11-06
- Revision:
- 41:111ca62e8a59
- Parent:
- 40:d3496c3ea301
File content as of revision 41:111ca62e8a59:
/* 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
* 2015, v18: WH, Performance improvement I2C portexpander
* 2015, v19: WH, Fixed Adafruit I2C/SPI portexpander pinmappings, fixed SYDZ Backlight
* 2015, v20: WH, Fixed occasional Init fail caused by insufficient wait time after ReturnHome command (0x02), Added defines to reduce memory footprint (eg LCD_ICON),
* Fixed and Added more fonttable support for PCF2119R_3V3, Added HD66712 controller.
* 2015, v21: WH, Added LCD32x2 defines and code, Fixed KS0073 DL=1 init for SPI, Added defines to reduce memory footprint (LCD_TWO_CTRL, LCD_CONTRAST, LCD_UTF8_FONT)
* Added SPLC792A controller, Added UTF8_2_LCD decode for Cyrilic font (By Andriy Ribalko). Added setFont()
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "mbed.h"
#include "TextLCD.h"
#include "TextLCD_UDC.inc"
#include "TextLCD_UTF8.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 b15..b8
_nr_cols = (_type & LCD_T_COL_MSK) >> LCD_T_COL_SHFT;
// Rows encoded in b23..b16
_nr_rows = (_type & LCD_T_ROW_MSK) >> LCD_T_ROW_SHFT;
// Addressing mode encoded in b27..b24
_addr_mode = _type & LCD_T_ADR_MSK;
// Font table, encoded in LCDCtrl
_font = _ctrl & 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) {
wait_ms(100); // Wait 100ms to ensure powered up
#if (LCD_TWO_CTRL == 1)
// Select and configure second LCD controller when needed
if(_type==LCD40x4) {
_ctrl_idx=_LCDCtrl_1; // Select 2nd controller
_initCtrl(dl); // Init 2nd controller
}
#endif
// 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 that dont work when DL=0.
* @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
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 | remains in 4 bit mode | remains in 4 bit mode
wait_ms(15); //
_writeNibble(0x3); // set 8 bit mode (MSN) and dummy LSN, | set dummy LSN, | set 8bit mode (MSN),
// remains in 8 bit mode | change to 8 bit mode | remains in 4 bit mode
wait_ms(15); //
_writeNibble(0x3); // set 8 bit mode (MSN) and dummy LSN, | set 8 bit mode (MSN) 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.
}
else {
// Reset in 8 bit mode, final Function set will follow
_writeCommand(0x30); // Function set 0 0 1 DL=1 N F x x
wait_ms(1); // most instructions take 40us
}
// 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 LCD6x1:
case LCD8x1: //8x1 is a regular 1 line display
// case LCD8x2B: //8x1 is a 16x1 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
// case LCD52x1: // EXT pin is High, extension driver needed
_function = dl | 0x02; // Set function, 0 0 1 DL, N, RE(0), DH, REV
// Note: 4 bit mode is NOT ignored for native SPI !
// DL=1 (8 bits bus), DL=0 (4 bits bus)
// N=0 (1-line mode), N=1 (2-line mode), 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 = dl | 0x04; // Set function, 0 0 1 DL, N, RE(1), BE, LP (Ext Regs)
// Note: 4 bit mode is NOT ignored for native SPI !
// DL=1 (8 bits bus), DL=0 (4 bits bus)
// N=0 (1-line mode), N=1 (2-line mode), dont care for 4 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 LCD16x3D1: // Special mode for KS0073, KS0078
// case LCD16x4D: // Special mode for KS0073, KS0078
case LCD20x4D: // Special mode for KS0073, KS0078
_function = dl | 0x02; // Set function, 0 0 1 DL, N, RE(0), DH, REV
// Note: 4 bit mode is NOT ignored for native SPI !
// DL=1 (8 bits bus), DL=0 (4 bits bus)
// N=0 (1-line mode), N=1 (2-line mode), 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 = dl | 0x04; // Set function, 0 0 1 DL, N, RE(1), BE, LP (Ext Regs)
// Note: 4 bit mode is NOT ignored for native SPI !
// DL=1 (8 bits bus), DL=0 (4 bits bus)
// N=0 (1-line mode), N=1 (2-line mode), dont care for 4 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 LCD6x2:
case LCD8x2:
case LCD16x2:
// case LCD16x1C:
case LCD20x2:
case LCD24x2:
case LCD32x2:
// All other LCD types are initialised as 2 Line displays
_function = dl | 0x0A; // Set function, 0 0 1 DL, N, RE(0), DH, REV
// Note: 4 bit mode is NOT ignored for native SPI !
// DL=1 (8 bits bus), 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 = dl | 0x0C; // Set function, 0 0 1 DL, N, RE(1), BE, LP (Ext Regs)
// Note: 4 bit mode is NOT ignored for native SPI !
// DL=1 (8 bits bus), 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;
default:
error("Error: LCD Controller type does not support this Display type\n\r");
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 = dl | 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 = dl | 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 = dl | 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 = dl | 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 LCD6x2:
case LCD8x2:
case LCD16x2:
// case LCD16x1C:
case LCD20x2:
case LCD24x2:
case LCD32x2:
case LCD40x2:
// All other LCD types are initialised as 2 Line displays (including LCD16x1C and LCD40x4)
_function = dl | 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 = dl | 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;
default:
error("Error: LCD Controller type does not support this Display type\n\r");
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
// Note: very similar to SPLC792A
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)
// Note: Bias and Osc register not available on SPLC792A
_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 (Bit3=0), Booster circuit is turned on (Bit2=1) (IS=1)
_icon_power = 0x0C; // Icon display on (Bit3=1), Booster circuit is turned on (Bit2=1) (IS=1)
// Note: Booster circuit always on for SPLC792A, Bit2 is dont care
// 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 LCD10x2D: // Special mode for SSD1803, 4-line mode but switch to double height font
case LCD10x4D: // Special mode for SSD1803
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:
case PCF2119R_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 (IC at Bottom)
// _writeCommand(0x05); // Display Conf Set 0000, 0, 1, P=0, Q=1
// _writeCommand(0x06); // Display Conf Set 0000, 0, 1, P=1, Q=0
_writeCommand(0x07); // Display Conf Set 0000, 0, 1, P=1, Q=1 (IC at Top)
_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 HD66712:
// 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
_function = 0x02; // Function set 001 DL N RE(0) - - (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 HD66712)
//
_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 HD66712)
// BE=0 (Blink Enable, CG/SEG RAM; special mode for HD66712)
// LP=0 (LP=1 Low power mode, LP=0 Normal; special mode for HD66712)
_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 HD66712)
break;
// case LCD12x3D: // Special mode for KS0073, KS0078, PCF21XX and HD66712
// case LCD12x3D1: // Special mode for KS0073, KS0078, PCF21XX and HD66712
case LCD12x4D: // Special mode for KS0073, KS0078, PCF21XX and HD66712
// case LCD16x3D: // Special mode for KS0073, KS0078 and HD66712
// case LCD16x4D: // Special mode for KS0073, KS0078 and HD66712
case LCD20x4D: // Special mode for KS0073, KS0078 and HD66712
_function = 0x02; // Function set 001 DL N RE(0) - - (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 HD66712)
//
_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 HD66712)
// BE=0 (Blink Enable, CG/SEG RAM; special mode for HD66712)
// LP=0 (LP=1 Low power mode, LP=0 Normal; special mode for HD66712)
_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 HD66712)
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) - - (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 HD66712)
_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 HD66712)
// BE=0 (Blink Enable, CG/SEG RAM, special mode for HD66712)
// 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 HD66712)
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 HD66712)
// BE=0 (Blink Enable/Disable, CG/SEG RAM, special mode for HD66712)
// 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 HD66712)
// BW=0 (Cur BW invert disable, special mode for HD66712)
// NW=0 (1,2 Line), NW=1 (4 line, special mode for HD66712)
_writeCommand(0x10); // Scroll/Shift set 0001 HS4 HS3 HS2 HS1 (Ext Regs)
// Dotscroll/Display shift enable (Special mode for HD66712)
_writeCommand(0x80); // Scroll Quantity set 1 0 HDS5 HDS4 HDS3 HDS2 HDS1 HDS0 (Ext Regs)
// Scroll quantity (Special mode for HD66712)
_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 HD66712)
// DH=1 (Disp shift enable/disable, special mode for HD66712)
// REV=0 (Reverse/Normal, special mode for HD66712)
break; // case HD66712 Controller
case SPLC792A_3V3:
// SPLC792A controller: Initialise Voltage booster for VLCD. VDD=3V3
// Note very similar to ST7032
// 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
//SPLC792A Does not support Bias and Internal Osc register
// _writeCommand(0x1C); // Internal OSC frequency adjustment Framefreq=183HZ, Bias will be 1/4 (Instr Set=1)
_contrast = LCD_SPLC792A_CONTRAST;
_writeCommand(0x70 | (_contrast & 0x0F)); // Set Contrast Low bits, 0 1 1 1 C3 C2 C1 C0 (IS=1)
// _icon_power = 0x04; // Icon display off (Bit3=0), Booster circuit is turned on (Bit2=1) (IS=1)
_icon_power = 0x0C; // Icon display on (Bit3=1), Booster circuit is turned on (Bit2=1) (IS=1)
// Note: Booster circuit always on for SPLC792A, Bit2 is dont care
// 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_SPLC792A_RAB & 0x07)); // Voltage follower, 0 1 1 0 FOn=1, Ampl ratio Rab2=1, Rab1=0, Rab0=0 (IS=1)
// Note: Follower circuit always on for SPLC792A, Bit3 is dont care
wait_ms(10); // Wait 10ms to ensure powered up
_writeCommand(0x20 | _function); // Select Instruction Set = 0
break; // case SPLC792A_3V3 Controller
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); // Clear Display 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); // Cursor Home, DDRAM Address to Origin
wait_ms(10); // The Return Home command takes 1.64 ms.
// Since we are not using the Busy flag, Lets be safe and take 10 ms
_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);
setCursor(CurOn_BlkOff);
setMode(DispOn);
}
/** Clear the screen, Cursor home.
* Note: The whole display is initialised to charcode 0x20, which may not be a 'space' on some controllers with a
* different fontset such as the PCF2116C or PCF2119R. In this case you should fill the display with 'spaces'.
*/
void TextLCD_Base::cls() {
#if (LCD_TWO_CTRL == 1)
// 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(20); // 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(20); // 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);
}
#else
// Support only one LCD controller
_writeCommand(0x01); // cls, and set cursor to 0
wait_ms(20); // The CLS command takes 1.64 ms.
// Since we are not using the Busy flag, Lets be safe and take 10 ms
#endif
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;
}
}
else {
//Character to write
#if (LCD_DEF_FONT == 1) //Default HD44780 font
_writeData(value);
#elif (LCD_C_FONT == 1) || (LCD_R_FONT == 1) //PCF21xxC or PCF21xxR font
_writeData(ASCII_2_LCD(value));
#elif (LCD_UTF8_FONT == 1) // UTF8 2 byte font (eg Cyrillic)
// value = UTF_2_LCD(value, utf_seq_rec_first_cyr, utf_seq_recode_cyr, &utf_rnd_recode_cyr[0][0]);
value = UTF_2_LCD(value);
if (value >= 0) {
_writeData(value);
// Only increment cursor when there is something to write
// Continue below to closing bracket...
#else
_writeData('?'); //Oops, no font defined
#endif
//Update Cursor
_column++;
if (_column >= columns()) {
_column = 0;
_row++;
if (_row >= rows()) {
_row = 0;
}
}
#if (LCD_DEF_FONT == 1) //Default HD44780 font
#elif (LCD_C_FONT == 1) || (LCD_R_FONT == 1) //PCF21xxC or PCF21xxR font
#elif (LCD_UTF8_FONT == 1) //UTF8 2 byte font (eg Cyrillic)
// Continue code above to close bracket...
} // if (value >= 0) {..
#else
#endif
} //else
//Set next memoryaddress, make sure cursor blinks at next location
addr = getAddress(_column, _row);
_writeCommand(0x80 | addr);
return value;
}
// get a single character (Stream implementation)
int TextLCD_Base::_getc() {
return -1;
}
#if ((LCD_C_FONT == 1) || (LCD_R_FONT == 1)) //PCF21xxC or PCF21xxR font
/** 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_F0 is default for HD44780 and compatible series
// if (_font == LCD_C_F0) return c;
//LCD_C_FC for PCF21XXC series
//LCD_C_FR for PCF21XXR series
//Used code from Suga koubou library for PCF2119K and PCF2119R
if (((c >= ' ') && (c <= '?')) || ((c >= 'A') && (c <= 'Z')) || ((c >= 'a') && (c <= 'z'))) {
c |= 0x80;
} else if (c >= 0xF0 && c <= 0xFF) {
c &= 0x0F;
}
return c;
}
#endif
#if(LCD_UTF8_FONT == 1)
/** Convert UTF8 2-byte character code to the LCD fonttable code
* @param c The character to write to the display
* @return character code for the specific fonttable of the controller or -1 if UTF8 code is not yet complete or incorrect
*
* Orig by Andriy, Modified by WH
*
* Note: The UTF8 decoding table for a specific controller is defined and selected in file TextLCD_UTF8.inc
* The table is accessed in this UTF_2_LCD() method through
* #define UTF_FIRST, UTF_LAST, UTF_SEQ_REC_FIRST, UTF_SEQ_REC_LAST and
* #define UTF_SEQ_RECODE and UTF_RND_RECODE
*/
int TextLCD_Base::UTF_2_LCD (int c) {
int utf_code;
int utf_low_byte; // Low byte UTF8
static int utf_hi_byte = 0; // High byte UTF8
if (c < 0x80) { // Regular ASCII code, no need to convert
return c;
}
else { // UTF8 handling, See wikipedia.org/wiki/UTF-8 and www.utf8-chartable.de
// printf("0x%X ", c);
if (c >= 0xC0) { // First UTF8 byte should be formatted as 110b bbaa, Do sanity check
utf_hi_byte = c & 0x1F; // Mask out significant bits (0x1F) and save high byte
return -1; // Nothing to display as yet, wait for second UTF8 byte
}
if (c <= 0xBF) { // Second UTF8 byte should be formatted as 10aa aaaa, Do sanity check
utf_low_byte = c & 0x3F; // Mask out significant bits (0x3F)
// Compose UTF character code from UTF8 bytes. The UTF codes will be between U+0080 and U+07FF
utf_code = (utf_hi_byte << 6) | utf_low_byte; // 00000bbb aaaaaaaa
// printf("0x%4X ", utf_code);
// Sanity check on UTF codes
// For example Cyrillic characters are UTF encoded between 0x0400 and 0x04FF
if ((utf_code < UTF_FIRST) || (utf_code > UTF_LAST)) {
return -1; // Invalid UTF8 code
};
//Map some specific UTF codes on a character in LCD fonttable using a special correcting lookup table
for (char i=0; UTF_RND_RECODE[i][0]; i++) { // Step through table until endvalue 0 is found or until a match is found
if (utf_code == UTF_RND_RECODE[i][0]) { // UTF8 code match is found
c = UTF_RND_RECODE[1][1];
return c; // found match in correcting random table
}
}
//Sanity check on table idx range
if ((utf_code < UTF_SEQ_REC_FIRST) || (utf_code > UTF_SEQ_REC_LAST)) {
return -1; // Invalid UTF8 code
};
//Map all other UTF codes on a character in LCD fonttable using a sequential lookup table
c = UTF_SEQ_RECODE[utf_code - UTF_SEQ_REC_FIRST];
return c; // entry in sequential table
}
else {
return -1; // Invalid UTF8 code for second byte
}
} // End UTF8 handling
}
#endif
#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 of value on D4..D7
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);
}
// 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
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
}
/** 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;
#if (LCD_TWO_CTRL == 1)
// 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);
}
#else
// Support only one LCD controller
_setCursorAndDisplayMode(_currentMode, _currentCursor);
#endif
}
/** 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) {
#if (LCD_TWO_CTRL == 1)
// 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);
}
#else
// Support only one LCD controller
_setUDC(c, udc_data);
#endif
}
/** 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
case PCF2119R_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);
}
#if(LCD_BLINK == 1)
/** 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 :
case HD66712 :
_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, HD66712 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 :
case PCF2119R_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 :
case HD66712:
_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, HD66712 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 :
case PCF2119R_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()
#endif
#if(LCD_CONTRAST == 1)
/** 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 :
case PCF2119R_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 :
case SPLC792A_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()
#endif
#if(LCD_POWER == 1)
/** 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 PCF2119R_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 PCF2119R_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()
#endif
#if(LCD_ORIENT == 1)
/** 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:
_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 PCF2119_3V3:
case PCF2119R_3V3:
_writeCommand(0x20 | _function | 0x01); // Set function, Select Instr Set = 1
_writeCommand(0x07); // Display Conf Set 0000 0, 1, P=1, 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:
_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 PCF2119_3V3:
case PCF2119R_3V3 :
_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(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()
#endif
#if(LCD_BIGFONT == 1)
/** 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:
break; // end default
} // end switch _ctrl
break; // end TopBottomLine
} // end switch lines
} // end setBigFont()
#endif
#if (LCD_FONTSEL == 1)
/** Set Font
* setFont method is supported by some compatible devices (eg SSD1803, US2066, ST7070)
*
* @param LCDFont font The selected Font
* @return none
*
* Note: most controllers support only one font and the hardware specific
* fonttable is encoded as part of the controller type number (eg PCF21XXC or PCF21XXR).
* Some controllers support multiple tables that can only be selected by logic levels on a few pins.
* Some controllers also support runtime fontable switching through a specific instruction
*/
void TextLCD_Base::setFont(LCDFont font) {
switch (font) {
case Font_RA: // UK/EU
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(0x72); // ROM Select command, 0 1 1 1 0 0 1 0 (Ext Instr Set)
_writeData(0x00); // ROM_0 Select data, 0 0 0 0 ROM2 ROM1 0 0 (Ext Instr Set)
_writeCommand(0x20 | _function); // Set function, 0 0 1 DL N DH RE(0) IS (Std Instr Set)
_font = font; // Save active font
break; // end SSD1803, US2066
case ST7070:
//ST7070 does not support Cursorblink. The P bit selects the font instead !
_writeCommand(0x08 | _currentMode | (_currentCursor & 0x02));
_font = font; // Save active font
break; // end ST7070
default:
break; // end default
} // end switch _ctrl
break; // end Font_RA
case Font_RB: // UK/CYR
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(0x72); // ROM Select command, 0 1 1 1 0 0 1 0 (Ext Instr Set)
_writeData(0x04); // ROM_0 Select data, 0 0 0 0 ROM2 ROM1 0 0 (Ext Instr Set)
_writeCommand(0x20 | _function); // Set function, 0 0 1 DL N DH RE(0) IS (Std Instr Set)
_font = font; // Save active font
break; // end SSD1803, US2066
case ST7070:
//ST7070 does not support Cursorblink. The P bit selects the font instead !
_writeCommand(0x08 | _currentMode | (_currentCursor & 0x02) | 0x01);
_font = font; // Save active font
break; // end ST7070
default:
break; // end default
} // end switch _ctrl
break; // end Font_RB
case Font_0: //Font_O is pretty similar to ROM_C
case Font_RC: // UK/JAP
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(0x72); // ROM Select command, 0 1 1 1 0 0 1 0 (Ext Instr Set)
_writeData(0x08); // ROM_0 Select data, 0 0 0 0 ROM2 ROM1 0 0 (Ext Instr Set)
_writeCommand(0x20 | _function); // Set function, 0 0 1 DL N DH RE(0) IS (Std Instr Set)
_font = font; // Save active font
break; // end SSD1803, US2066
default:
break; // end default
} // end switch _ctrl
break; // end Font_RC
} // end switch font
//SSD1803 seems to screw up cursor position after selecting new font. Restore to make sure...
//Set next memoryaddress, make sure cursor blinks at next location
int addr = getAddress(_column, _row);
_writeCommand(0x80 | addr);
}
#endif
#if(LCD_ICON==1)
/** 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:
case SPLC792A_3V3:
_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:
case PCF2119R_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:
case SPLC792A_3V3:
_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:
case PCF2119R_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()
#endif
#if(LCD_INVERT == 1)
/** 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()
#endif
//--------- 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 = LCD_BUS_I2C_DEF;
// write the new data to the portexpander
_writeRegister(GPIO, _lcd_bus);
#else
// PCF8574 of PCF8574A portexpander
// Init the portexpander bus
_lcd_bus = LCD_BUS_I2C_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
}
// Set E bit (or E2 bit) in the databus shadowvalue
// Used for mbed I2C bus expander
void TextLCD_I2C::_setEnableBit(bool value) {
#if (LCD_TWO_CTRL == 1)
if(_ctrl_idx==_LCDCtrl_0) {
if (value) {
_lcd_bus |= LCD_BUS_I2C_E; // Set E bit
}
else {
_lcd_bus &= ~LCD_BUS_I2C_E; // Reset E bit
}
}
else {
if (value) {
_lcd_bus |= LCD_BUS_I2C_E2; // Set E2 bit
}
else {
_lcd_bus &= ~LCD_BUS_I2C_E2; // Reset E2bit
}
}
#else
// Support only one controller
if (value) {
_lcd_bus |= LCD_BUS_I2C_E; // Set E bit
}
else {
_lcd_bus &= ~LCD_BUS_I2C_E; // Reset E bit
}
#endif
}
// 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 |= LCD_BUS_I2C_RS; // Set RS bit
}
else {
_lcd_bus &= ~LCD_BUS_I2C_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 |= LCD_BUS_I2C_BL; // Set BL bit
}
else {
_lcd_bus &= ~LCD_BUS_I2C_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
}
#if(0)
// New optimized v018
// Test faster _writeByte 0.11s vs 0.27s for a 20x4 fillscreen (PCF8574), same as v018
// Place the 4bit data in the databus shadowvalue
// Used for mbed I2C bus expander
const char _LCD_DATA_BITS[16] = {
0x00,
( LCD_BUS_I2C_D4),
( LCD_BUS_I2C_D5 ),
( LCD_BUS_I2C_D5 | LCD_BUS_I2C_D4),
( LCD_BUS_I2C_D6 ),
( LCD_BUS_I2C_D6 | LCD_BUS_I2C_D4),
( LCD_BUS_I2C_D6 | LCD_BUS_I2C_D5 ),
( LCD_BUS_I2C_D6 | LCD_BUS_I2C_D5 | LCD_BUS_I2C_D4),
(LCD_BUS_I2C_D7 ),
(LCD_BUS_I2C_D7 | LCD_BUS_I2C_D4),
(LCD_BUS_I2C_D7 | LCD_BUS_I2C_D5 ),
(LCD_BUS_I2C_D7 | LCD_BUS_I2C_D5 | LCD_BUS_I2C_D4),
(LCD_BUS_I2C_D7 | LCD_BUS_I2C_D6 ),
(LCD_BUS_I2C_D7 | LCD_BUS_I2C_D6 | LCD_BUS_I2C_D4),
(LCD_BUS_I2C_D7 | LCD_BUS_I2C_D6 | LCD_BUS_I2C_D5 ),
(LCD_BUS_I2C_D7 | LCD_BUS_I2C_D6 | LCD_BUS_I2C_D5 | LCD_BUS_I2C_D4)
};
void TextLCD_I2C::_setDataBits(int value) {
//Clear all databits
_lcd_bus &= ~LCD_BUS_I2C_MSK;
// Set bit by bit to support any mapping of expander portpins to LCD pins
_lcd_bus |= _LCD_DATA_BITS[value & 0x0F];
}
#endif
// Test faster _writeByte 0.11s vs 0.27s for a 20x4 fillscreen (PCF8574)
// Place the 4bit data in the databus shadowvalue
// Used for mbed I2C bus expander
void TextLCD_I2C::_setDataBits(int value) {
//Clear all databits
_lcd_bus &= ~LCD_BUS_I2C_MSK;
// Set bit by bit to support any mapping of expander portpins to LCD pins
if (value & 0x01){
_lcd_bus |= LCD_BUS_I2C_D4; // Set Databit
}
if (value & 0x02){
_lcd_bus |= LCD_BUS_I2C_D5; // Set Databit
}
if (value & 0x04) {
_lcd_bus |= LCD_BUS_I2C_D6; // Set Databit
}
if (value & 0x08) {
_lcd_bus |= LCD_BUS_I2C_D7; // Set 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);
wait_ms(100); // Wait 100ms to ensure LCD powered up
// Init the portexpander bus
_lcd_bus = LCD_BUS_SPI_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 |= LCD_BUS_SPI_E; // Set E bit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_E; // Reset E bit
}
}
else {
if (value) {
_lcd_bus |= LCD_BUS_SPI_E2; // Set E2 bit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_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 |= LCD_BUS_SPI_RS; // Set RS bit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_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 |= LCD_BUS_SPI_BL; // Set BL bit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_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 |= LCD_BUS_SPI_D4; // Set Databit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_D4; // Reset Databit
}
if (value & 0x02) {
_lcd_bus |= LCD_BUS_SPI_D5; // Set Databit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_D5; // Reset Databit
}
if (value & 0x04) {
_lcd_bus |= LCD_BUS_SPI_D6; // Set Databit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_D6; // Reset Databit
}
if (value & 0x08) {
_lcd_bus |= LCD_BUS_SPI_D7; // Set Databit
}
else {
_lcd_bus &= ~LCD_BUS_SPI_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
}
// 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 ----------
HD44780 and compatible Text LCD controllers (4bit, I2C or SPI I/F)