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那个多出来的TM4C123G的作用是什么呢？
希望能稍微解释下，，谢谢
另外一个是完成 调试器 的功能的吧
板子中间的引脚引到插针上的是目标M4，可以对它进行编程调试。
上面那个是ICDI调试器，理解成一个JTAG仿真器即可。
