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87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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LiquidCrystal Library - scrollDisplayLeft() and scrollDisplayRight()
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Demonstrates the use a 16x2 LCD display. The LiquidCrystal
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library works with all LCD displays that are compatible with the
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Hitachi HD44780 driver. There are many of them out there, and you
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can usually tell them by the 16-pin interface.
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This sketch prints "Hello World!" to the LCD and uses the
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scrollDisplayLeft() and scrollDisplayRight() methods to scroll
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the text.
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The circuit:
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* LCD RS pin to digital pin 12
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* LCD Enable pin to digital pin 11
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* LCD D4 pin to digital pin 5
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* LCD D5 pin to digital pin 4
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* LCD D6 pin to digital pin 3
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* LCD D7 pin to digital pin 2
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* LCD R/W pin to ground
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* 10K resistor:
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* ends to +5V and ground
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* wiper to LCD VO pin (pin 3)
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Library originally added 18 Apr 2008
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by David A. Mellis
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library modified 5 Jul 2009
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by Limor Fried (http://www.ladyada.net)
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example added 9 Jul 2009
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by Tom Igoe
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modified 22 Nov 2010
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by Tom Igoe
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This example code is in the public domain.
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http://arduino.cc/en/Tutorial/LiquidCrystalScroll
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*/
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// include the library code:
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#include <LiquidCrystal.h>
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// initialize the library with the numbers of the interface pins
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LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
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void setup() {
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// set up the LCD's number of columns and rows:
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lcd.begin(16, 2);
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// Print a message to the LCD.
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lcd.print("hello, world!");
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delay(1000);
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}
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void loop() {
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// scroll 13 positions (string length) to the left
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// to move it offscreen left:
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for (int positionCounter = 0; positionCounter < 13; positionCounter++) {
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// scroll one position left:
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lcd.scrollDisplayLeft();
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// wait a bit:
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delay(150);
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}
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// scroll 29 positions (string length + display length) to the right
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// to move it offscreen right:
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for (int positionCounter = 0; positionCounter < 29; positionCounter++) {
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// scroll one position right:
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lcd.scrollDisplayRight();
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// wait a bit:
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delay(150);
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}
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// scroll 16 positions (display length + string length) to the left
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// to move it back to center:
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for (int positionCounter = 0; positionCounter < 16; positionCounter++) {
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// scroll one position left:
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lcd.scrollDisplayLeft();
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// wait a bit:
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delay(150);
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}
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// delay at the end of the full loop:
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delay(1000);
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}
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