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TM4C1294NCPDT Boot loader (ethernet)

Other Parts Discussed in Thread: TM4C1294NCPDT, TM4C1232D5PM

新的TM4C1294NCPDT,用以太网进行boot loader. 用LM  flash 进行更新。在更新前两个程序都已经下载好,工作正常。用LM  flash 能更新,但是更新后,工作不正常,断电重启也不能正常工作。如果再把应用程序用JTAG再下载一遍(没有删除boot loader程序),工作正常。这是为什么?