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gpio_read把定义的接线断开依然能读到01是什么原因？
已经把除了uart的RX，Tx线全部断开了，但gpio_read依然能读到01是什么原因？
没有进行内部上拉或下拉
我断掉接线打印的内容如之前发的那个串口的截图，我接上接线打印的内容依然不变。且HREF始终是0
