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板上有几组串口能用的呀
@阿里 参考如下文档 https://www.cool-pi.com/topic/69/coolpi-4b硬件扩展二-serial-port/3?_=1686637427786
这能用吗，会不会有异常
@阿里 都是独立的uart控制器，没有问题的。