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Mo,
你确定程序能下载到芯片里面,但是在设备管理器里面找不到相关的端口?这个不太可能,你第一次插上launch pad的时候,系统没有提示安装驱动之类的信息吗?理论上IAR安装路径下是有相关驱动的。
你仔细查看一下COM口,很明显的
谢谢