Linux SDL库，封装了声音、键盘、鼠标、显卡等设备。-This is the Simple DirectMedia Layer, a general API that provides low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D framebuffer across multiple platforms

LSM303D的linux驱动，这是一款超紧凑的高性能电子罗盘三维加速度计和三维磁强计模块-Ultra compact high performance e-Compass 3D accelerometer and 3D magnetometer module