CC2538点对点传输例子 实现一个发射端与一个接收端，发送固定数据包，接收端根据接收到的包的完整度闪烁的led数量也有区别，当从头开始接收时，LED全亮，发射/接收职能在开机界面设定-CC2538 point transmission to achieve a transmitting end and a receiving end, sending a single packet, the number of led receivi