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lib/LiquidCrystal_I2C/examples/Autoscroll/Autoscroll.ino

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+/*
+  NAME:
+  Demonstration of Autoscroll function
+
+  DESCRIPTION:
+  This sketch demonstrates the use of the autoscroll() and noAutoscroll()
+  functions to make new text scroll or not.
+  * The sketch is intended preferrably for 16x2 LCD, but can be configured
+    for 20x4 LCDs just by uncommenting and commenting related sections.
+  * The sketch is just for demonstration purposes, so that it is not
+    optimized for memory usage.
+
+  LICENSE:
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the MIT License (MIT).
+    
+  CREDENTIALS:
+  Author: Libor Gabaj
+  Version: 1.0.0
+  Updated: 20.03.2016
+  
+  CREDIT:
+  The example taken and rewritten for I2C from official Arduino standard library
+  (https://github.com/arduino/Arduino/tree/master/libraries/LiquidCrystal)
+*/
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h>
+
+// LCD address and geometry and library initialization
+const byte lcdAddr = 0x27;  // Address of I2C backpack
+const byte lcdCols = 16;    // Number of character in a row
+const byte lcdRows = 2;     // Number of lines
+//const byte lcdAddr = 0x3F;  // Address of I2C backpack
+//const byte lcdCols = 20;    // Number of character in a row
+//const byte lcdRows = 4;     // Number of lines
+
+LiquidCrystal_I2C lcd(lcdAddr, lcdCols, lcdRows);
+
+// Demo parameters
+const byte lcdScrollRow = 0;          // Number of a demo row counting from 0
+const unsigned int digitDelay = 500;  // Miliseconds before displaying next digit
+
+// Function for displaying demo digits
+void printDigits() {
+  for (byte thisChar = 0; thisChar < 10; thisChar++) {
+    lcd.print(thisChar);
+    delay(digitDelay);
+  }
+}
+
+void setup() {
+  lcd.init();
+  lcd.backlight();
+}
+
+void loop() {
+  lcd.setCursor(0, lcdScrollRow);
+  printDigits();
+
+  // Set the cursor to the last column of the demo row and turn on autoscroll
+  lcd.setCursor(lcdCols, lcdScrollRow);
+  lcd.autoscroll();
+  printDigits();
+  lcd.noAutoscroll();
+  lcd.clear();
+}
+