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在这个目录下面 lichee/linux-5.4/drivers/usb/sunxi_usb
用命令: grep "usb_host" -r . 搜索代码可以看到实现过程的。
W 回复于
@whycan 感谢晕哥,串口杜邦线出问题了,搞了好几天,最后发现用杜邦线短接Ch340不能回读。。。。