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使用buildroot制作文件系统，配置tty port时应该填什么，
首先你要知道你打算从哪个UART输出终端信息，这个看看板子上的原理图就知道。
系统配置哪个出口和你win7没啥关系
你好，请教一下这串口用哪个tty
