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c6455运用ndk2.0.0版本,运行hello world例程,与pc ping不通,求原因



自己设计的dsp6455的板子,PHY芯片用的是ET1011,用的ndk2.0.0库版本,软件ccs3.3,运行例程Hello world之后,一直收不到数据,在回调函数dtask_udp_hello中切断点也进不去,用pc  也ping不通,求大神们帮忙解答什么原因导致的