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我需要读取设备的mac地址，调用了这个函数sl_NetCfgGet(SL_MAC_ADDRESS_GET,NULL,&macAddressLen,(_u8 *)macAddressVal);现象是跑到这一行时就一直卡住运行不下去了，请问如何解决
是否出现野指针了？
用simplelink的库函数
在 读取本机的MAC地址之前，又没有正确的启动NWP网络处理器？sl_NetCfgGet(SL_MAC_ADDRESS_GET,NULL,&macAddressLen,(unsigned char *)macAddressVal);
