该演示程序实现温度的采集与显示功能，内部温度传感器定时采样，并将采集到的温度信息广播发送出去，另外的节点接收到温度信息后通过串口向计算机上报，串口通信波特率为576-The demonstration program of acquisition and temperature display function, the internal temperature sensor sampling timing and the temperature of the information colle