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Hd44780 pin io module #152

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Hd44780 pin io module #152

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5e162f4
Add ing different library to support older Hitachi Devices
julia-m-stephenson Jun 22, 2025
5086885
Made comment clearer
julia-m-stephenson Jun 22, 2025
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17 changes: 17 additions & 0 deletions k3ng_keyer/k3ng_keyer.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -1683,6 +1683,12 @@ If you offer a hardware kit using this software, show your appreciation by sendi
#define WIRECLOCK 400000L
#endif

#if defined(FEATURE_LCD_HD44780_PINIO)
#include <Wire.h>
#include <hd44780.h>
#include <hd44780ioClass/hd44780_pinIO.h>
#endif

#if defined(FEATURE_OLED_SSD1306)
#include <Wire.h>
#include "SSD1306Ascii.h"
Expand Down Expand Up @@ -2135,6 +2141,10 @@ byte send_buffer_status = SERIAL_SEND_BUFFER_NORMAL;
hd44780_I2Cexp lcd;
#endif

#if defined(FEATURE_LCD_HD44780_PINIO)
hd44780_pinIO lcd(lcd_rs, lcd_enable, lcd_d4, lcd_d5, lcd_d6, lcd_d7);
#endif

#if defined(FEATURE_OLED_SSD1306)
SSD1306AsciiWire lcd;
#endif
Expand Down Expand Up @@ -18752,6 +18762,13 @@ void initialize_display(){
lcd.begin();
lcd.home();
#else
#if defined(FEATURE_LCD_HD44780_PINIO)
// Slower access to older genuine Hitachi devices
// default is setExecTimes(HD44780_CHEXECTIME, HD44780_INSEXECTIME);
// Values in useconds
// lcd.setExecTimes(2000,38);// default
lcd.setExecTimes(2000, 1200);// has to be slow or lcd_centre_print_timed() causes corruption
#endif
lcd.begin(LCD_COLUMNS, LCD_ROWS);
#endif
#endif
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2 changes: 1 addition & 1 deletion k3ng_keyer/keyer_dependencies.h
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@@ -1,5 +1,5 @@

#if defined(FEATURE_LCD_4BIT) || defined(FEATURE_LCD_8BIT) || defined(FEATURE_LCD_ADAFRUIT_I2C) || defined(FEATURE_LCD_ADAFRUIT_BACKPACK) || defined(FEATURE_LCD_YDv1) ||defined(FEATURE_LCD1602_N07DH) || defined(FEATURE_LCD_SAINSMART_I2C) || defined(FEATURE_LCD_FABO_PCF8574) || defined(FEATURE_LCD_MATHERTEL_PCF8574) || defined(FEATURE_LCD_HD44780) || defined(FEATURE_LCD_I2C_FDEBRABANDER) || defined(FEATURE_LCD_TWILIQUIDCRYSTAL) || defined(FEATURE_OLED_SSD1306)
#if defined(FEATURE_LCD_4BIT) || defined(FEATURE_LCD_8BIT) || defined(FEATURE_LCD_ADAFRUIT_I2C) || defined(FEATURE_LCD_ADAFRUIT_BACKPACK) || defined(FEATURE_LCD_YDv1) ||defined(FEATURE_LCD1602_N07DH) || defined(FEATURE_LCD_SAINSMART_I2C) || defined(FEATURE_LCD_FABO_PCF8574) || defined(FEATURE_LCD_MATHERTEL_PCF8574) || defined(FEATURE_LCD_HD44780) || defined(FEATURE_LCD_I2C_FDEBRABANDER) || defined(FEATURE_LCD_TWILIQUIDCRYSTAL) || defined(FEATURE_OLED_SSD1306) || defined(FEATURE_LCD_HD44780_PINIO)
#define FEATURE_DISPLAY
#endif

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3 changes: 2 additions & 1 deletion k3ng_keyer/keyer_features_and_options.h
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Expand Up @@ -34,7 +34,8 @@
// #define FEATURE_LCD_FABO_PCF8574 // https://github.com/FaBoPlatform/FaBoLCD-PCF8574-Library
// #define FEATURE_LCD_MATHERTEL_PCF8574 // https://github.com/mathertel/LiquidCrystal_PCF8574
// #define FEATURE_LCD_I2C_FDEBRABANDER // https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library
// #define FEATURE_LCD_HD44780
// #define FEATURE_LCD_HD44780 // hd44780_I2Cexp subclass control LCD using i2c i/o expander backpack (PCF8574 or MCP23008) see https://https://github.com/duinoWitchery/hd44780
// #define FEATURE_LCD_HD44780_PINIO // hd44780_pinIO subclass control LCD using direct Arduino Pin connections see https://https://github.com/duinoWitchery/hd44780
// #define FEATURE_OLED_SSD1306 // https://github.com/greiman/SSD1306Ascii
// #define FEATURE_CW_DECODER // https://github.com/k3ng/k3ng_cw_keyer/wiki/385-Feature:-CW-Decoder
// #define FEATURE_SLEEP // go to sleep after x minutes to conserve battery power (not compatible with Arduino DUE, may have mixed results with Mega and Mega ADK)
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2 changes: 1 addition & 1 deletion k3ng_keyer/keyer_pin_settings.h
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Expand Up @@ -41,7 +41,7 @@ FEATURE_SIDETONE_SWITCH


//lcd pins
#if defined(FEATURE_LCD_4BIT) || defined(FEATURE_LCD_8BIT)
#if defined(FEATURE_LCD_4BIT) || defined(FEATURE_LCD_8BIT) || defined(FEATURE_LCD_HD44780_PINIO)
#define lcd_rs A2
#define lcd_enable 10 // pin 10 is used by Ethernet shield and will conflict with that
#define lcd_d4 6
Expand Down