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A接3352，B1接boot上下拉，B2接总线设备.启动的时候使能A=B1，启动后使能A=B2.这样使用有问题吗？请帮助解答，谢谢。
请问是要用GPIO控制这个总线开关么？
可以的，但是要注意上电时序
你好，GPIO控制总线开关，启动是默认上下拉使能boot配置，即A=B1
