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你的COM4是IDE用来连接OpenMV的USB,
串口助手要连接COM5
嗯呢,后来我发现这个问题了,串口连正确了,但是没有信息输出,也无法输入信息,这怎么回事
看一下视频,估计是硬件连线有问题。
https://singtown.com/learn/50235/