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IDE串口与TTL-USB模块串口冲突，只能使用一个。有没有用过的啊？
在设备管理器可以看到，OpenMV 的com口，和你的usb-ttl的com口。 OpenMV 的IDE选择OpenMV 的com口，你的串口助手选择usb-ttl模块的com口。