vangalvin:
Do you by any chance have an example that uses the LiquidCrystal.h library and an LCD without a shift register?
Changes
Defines.h
#define NUM_LCD_ROWS 4
#define NUM_LCD_COLS 20
REBLDisplay.h
#include "REBLDisplay.h"
#ifdef USING_SERIAL
extern HardwareSerial Serial;
#endif
LiquidCrystal *LCD;
uint8_t redPin;
uint8_t greenPin;
uint8_t bluePin;
char lineBuffer[NUM_LCD_ROWS][NUM_LCD_COLS + 1]; // Leave an extra space for terminating null
color_vars current_color;
boolean cursorActive = false;
uint8_t cursorRow;
uint8_t cursorCol;
void initLCD(uint8_t aRsPin, uint8_t aEnablePin, uint8_t aD1, uint8_t aD2, uint8_t aD3, uint8_t aD4) {
#ifdef USING_SERIAL
Serial.begin(19200);
#else
LCD = new LiquidCrystal(aRsPin, aEnablePin, aD1, aD2, aD3, aD4);
LCD->begin(NUM_LCD_COLS, NUM_LCD_ROWS);
LCD->noCursor();
LCD->clear();
#endif
}
REBL_UI_Example
#include <LiquidCrystal>
#define ENCODER_INTERRUPT_PIN 2 // MUST keep pin 2.
#define ENCODER_B_PIN A0
#define BUTTON_PIN A1
#define LCD_ENABLE_PIN 13
#define LCD_RS_PIN 12
#define HEART_BEAT_PIN A15
//#define LCD_BLUE A0
//#define LCD_GREEN A2
//#define LCD_RED A4
#define LCD_D1 5 // New ↓
#define LCD_D2 4
#define LCD_D3 3
#define LCD_D4 7
const int contrast = 20; // min. PWM value
→ void setup() [Replace everything in the curly braces.]
initLCD(LCD_RS_PIN, LCD_ENABLE_PIN, LCD_D1, LCD_D2, LCD_D3, LCD_D4); // New
initInterface(BUTTON_PIN, ENCODER_INTERRUPT_PIN, ENCODER_B_PIN);
reblMenu.setCurrentMenu(&menuList);
pinMode(8,HIGH); // LCD pin 15: backlight (anode)
// pinMode(11,OUTPUT);
// analogWrite(11,700);
analogWrite(6,contrast); // PWM~ pins: 3,5,(6),9,10,11. LCD pin 3: Vo (supply for LCD driver)
// Turn on LCD Backlight:
// lcd.setLED1Pin(1);
Or you can try out the above from this link: github.com/adamaero/REBL_UI
It finally works. The schematic is for the Mega 2560. But it only shows up on half of the LCD (2x16 instead of 4x20). So I think something in "REBLDisplay.cpp" around line 85ish and down would be the change...
