树莓派+DVK511扩展板+1602显示屏的简单例程，能显示系统温度，空闲内存，当前IP（方便SSH连接），DS18B20温度.-This procedure for Raspberry Pi via DVK511 1602 demonstration effect expansion board, the use of the library and its incidental wiringPi LCD library GPIO and operate 1602. The default d