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- /*
- LiquidCrystal Library - TextDirection
-
- Demonstrates the use a 16x2 LCD display. The LiquidCrystal
- library works with all LCD displays that are compatible with the
- Hitachi HD44780 driver. There are many of them out there, and you
- can usually tell them by the 16-pin interface.
-
- This sketch demonstrates how to use leftToRight() and rightToLeft()
- to move the cursor.
-
- The circuit:
- * LCD RS pin to digital pin 12
- * LCD Enable pin to digital pin 11
- * LCD D4 pin to digital pin 5
- * LCD D5 pin to digital pin 4
- * LCD D6 pin to digital pin 3
- * LCD D7 pin to digital pin 2
- * 10K resistor:
- * ends to +5V and ground
- * wiper to LCD VO pin (pin 3)
-
- Library originally added 18 Apr 2008
- by David A. Mellis
- library modified 5 Jul 2009
- by Limor Fried (http://www.ladyada.net)
- example added 9 Jul 2009
- by Tom Igoe
- modified 25 July 2009
- by David A. Mellis
-
- http://www.arduino.cc/en/Tutorial/LiquidCrystal
-
- */
-
-// include the library code:
-#include <LiquidCrystal.h>
-
-// initialize the library with the numbers of the interface pins
-LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
-
-int thisChar = 'a';
-
-void setup() {
- // set up the LCD's number of rows and columns:
- lcd.begin(16, 2);
- // turn on the cursor:
- lcd.cursor();
- Serial.begin(9600);
-}
-
-void loop() {
- // reverse directions at 'm':
- if (thisChar == 'm') {
- // go right for the next letter
- lcd.rightToLeft();
- }
- // reverse again at 's':
- if (thisChar == 's') {
- // go left for the next letter
- lcd.leftToRight();
- }
- // reset at 'z':
- if (thisChar > 'z') {
- // go to (0,0):
- lcd.home();
- // start again at 0
- thisChar = 'a';
- }
- // print the character
- lcd.print(thisChar, BYTE);
- // wait a second:
- delay(1000);
- // increment the letter:
- thisChar++;
-}
-
-
-
-
-
-
-
-