Java控制树莓派GPIO口-Pi4J

Pi4J（http://pi4j.com/）是专门用来控制树莓派GPIO口以及通信的Java库。它有如下功能：

Export & unexport GPIO pins
Configure GPIO pin direction
Configure GPIO pin edge detection
Control/write GPIO pin states
Pulse GPIO pin state
Read GPIO pin states
Listen for GPIO pin state changes (interrupt-based; not polling)
Automatically set GPIO states on program termination (GPIO shutdown)
Triggers for automation based on pin state changes
Send & receive data via RS232 serial communication
I2C Communication
SPI Communication
Extensible GPIO Provider interface to add GPIO capacity via expansion boards
Access system information and network information from the Raspberry Pi
Wrapper classes for direct access to WiringPi Library from Java

下载、新手帮助、API文档均可从官网找到。