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我想用openmv检测到的数字数据传到一块恩智浦开发板上,但开发板总是没法接收数据。所以想着先用串口助手调试一下,却发现串口助手无法连接,一连接就显示“打开串口失败:access denied。 请问到底为什么会这样?
你要用usb转串口模块,连接电脑上,串口助手连接usb转串口模块的COM口。