POWER_SAVING 模式下,我用P0_4来唤醒模块。但是我发现HalUARTPollDMA()函数里面是这样设计的:P0_5初始化被置高,当我P0_4拉低唤醒模块之后P0_5被拉低。我想知道TI的工程师为什么要这么设计,P0_5这样设计有什么意义·~~~~~谢谢
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POWER_SAVING 模式下,我用P0_4来唤醒模块。但是我发现HalUARTPollDMA()函数里面是这样设计的:P0_5初始化被置高,当我P0_4拉低唤醒模块之后P0_5被拉低。我想知道TI的工程师为什么要这么设计,P0_5这样设计有什么意义·~~~~~谢谢