这是TI官方提供的关于ZigBee协议栈中的NWK层的代码分析，正在学习ZigBee的朋友可以好好看看，很有用的！-This is the official information provided on the TI ZigBee NWK layer protocol stack code in the analysis of ZigBee' s friends are learning to be a good look, very useful!