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@zoipuus send_fd || receive_fd < 0,里面不就包含了send_fd < 0
我想同时打开两个串口，为啥一直显示打开错误，这两个串口分别打开的时候都是没有问题的。
我想同时打开两个串口，为啥一直显示打开错误，这两个串口分别打开的时候都是没有问题的。