请问楼主用的是MDK4还是5？我在MDK5.23里打开lwip带的例程，Run-Time Enviroment里各种错误，改掉一堆设置后没错了。
编译报出各种未定和错误
error: #20: identifier "ARM_ETH_MAC_EVENT" is undefined
error: #136: struct "_ARM_DRIVER_ETH_MAC" has no field "EnableTx"
error: #20: identifier "ARM_ETH_OK" is undefined
还有好多，实现是不知道原因在哪了。
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编译报出各种未定和错误
error: #20: identifier "ARM_ETH_MAC_EVENT" is undefined
error: #136: struct "_ARM_DRIVER_ETH_MAC" has no field "EnableTx"
error: #20: identifier "ARM_ETH_OK" is undefined
还有好多，实现是不知道原因在哪了。
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