Arduino/libraries/hd44780/examples/ioClass/hd44780_I2Cexp/README.md

hd44780_I2Cexp examples

The examples included in this directory are for the hd44780_I2Cexp i/o class.
The hd44780_I2Cexp i/o class controls an LCD using an i2c i/o exapander backpack (PCF8574 or MCP23008)

The following examples are included:

• HelloWorld
  Prints "Hello, World!" on the lcd

• I2CexpDiag
  Verifies configuation & operation of hd44780 LCDs based on the Hitachi HD44780 and compatible chipsets using I2C extension backpacks that use a simple I2C i/o expander chip. (PCF8574 or MCP23008) Sketch supports testing of multiple displays at once.

• LCDCustomChars
  Demonstrates using custom characters

• LineWrap
  Demonstrates automatic linewrap functionality

• MultiDisplay
  Displays information on multiple displays at once.

• ReadWrite
  Demonstrates the ability to read data from the LCD.

• Serial2LCD
  Displays a message read from the serial port on the lcd.

• SoftwareWire
  Demonstrates how to use the SoftwareWire library to allow using different pins for SDA and SCL signals.

• UpTime
  Prints the amount of time since the Arduino has been reset.

• hd44780examples
  The hd44780examples subdirectory contains hd44780_I2Cexp class specific wrapper sketches for sketches under examples/hd44780examples.