If you're using one of these libraries, you need to install it first. Sprite - Basic image sprite manipulation library for use in animations with an LED matrix.Matrix - Basic LED Matrix display manipulation library.These libraries are compatible Wiring versions, and the links below point to the (excellent) Wiring documentation. Wire - Two Wire Interface ( TWI/I2C) for sending and receiving data over a net of devices or sensors.Stepper - for controlling stepper motors.SoftwareSerial - for serial communication on any digital pins.SPI - for communicating with devices using the Serial Peripheral Interface (SPI) Bus.LiquidCrystal - for controlling liquid crystal displays ( LCDs).Firmata - for communicating with applications on the computer using a standard serial protocol.Ethernet - for connecting to the internet using the Arduino Ethernet Shield.EEPROM - reading and writing to 'permanent' storage.To use a library in a sketch, select it from Sketch > Import Library. working with hardware or manipulating data. Libraries provide extra functionality for use in sketches, e.g. Reference Language | Libraries | Comparison | Changes

Pic32 wire library chipkit