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libraries/Adafruit_LiquidCrystal/examples/HelloWorld_SPI/HelloWorld_SPI.ino

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+/*
+ Demonstration sketch for Adafruit i2c/SPI LCD backpack
+ using 74HC595 SPI expander
+ ( http://www.ladyada.net/products/i2cspilcdbackpack/index.html )
+
+ This sketch prints "Hello World!" to the LCD
+ and shows the time.
+ 
+  The circuit:
+ * 5V to Arduino 5V pin
+ * GND to Arduino GND pin
+ * CLK to Digital 2
+ * DAT to Digital 3
+ * LAT to Digital 4
+*/
+
+
+// include the library code:
+#include "Wire.h"
+#include "Adafruit_LiquidCrystal.h"
+
+// Connect via SPI. Data pin is #3, Clock is #2 and Latch is #4
+Adafruit_LiquidCrystal lcd(3, 2, 4);
+
+void setup() {
+  // set up the LCD's number of rows and columns: 
+  lcd.begin(16, 2);
+  // Print a message to the LCD.
+  lcd.print("hello, world!");
+}
+
+void loop() {
+  // set the cursor to column 0, line 1
+  // (note: line 1 is the second row, since counting begins with 0):
+  lcd.setCursor(0, 1);
+  // print the number of seconds since reset:
+  lcd.print(millis()/1000);
+
+  lcd.setBacklight(HIGH);
+  delay(500);
+  lcd.setBacklight(LOW);
+  delay(500);
+}
+