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- /*
- LiquidCrystal Library - setCursor
- 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 prints to all the positions of the LCD using the
- setCursor(0 method:
- 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
- * LCD R/W pin to ground
- * 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 22 Nov 2010
- by Tom Igoe
- This example code is in the public domain.
- http://arduino.cc/en/Tutorial/LiquidCrystalSetCursor
- */
- // include the library code:
- #include <LiquidCrystal.h>
- // these constants won't change. But you can change the size of
- // your LCD using them:
- const int numRows = 2;
- const int numCols = 16;
- // initialize the library with the numbers of the interface pins
- LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
- void setup() {
- // set up the LCD's number of columns and rows:
- lcd.begin(numCols, numRows);
- }
- void loop() {
- // loop from ASCII 'a' to ASCII 'z':
- for (int thisLetter = 'a'; thisLetter <= 'z'; thisLetter++) {
- // loop over the columns:
- for (int thisCol = 0; thisCol < numRows; thisCol++) {
- // loop over the rows:
- for (int thisRow = 0; thisRow < numCols; thisRow++) {
- // set the cursor position:
- lcd.setCursor(thisCol, thisRow);
- // print the letter:
- lcd.write(thisLetter);
- delay(200);
- }
- }
- }
- }
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