7078| 13
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急求啊,研究了半天了各位大神!!stm32f103 4*4按键问题,求解答啊!! |
3金钱
最佳答案按照我的理解 设置成上拉输入 还是下拉输入 是根据你的电路来的。例如:IO口通过开关连接地 那你需要设置成上拉输入,IO口通过开关连接电源,那你输入设置成下拉输入。如果有外部上拉或是下拉的话可以设置成浮空输入,也可以设置成和外部一样上拉或是下拉,注意要和外部一致。
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He who fights with monsters should look to it that he himself does not become a monster, when you gaze long into the abyss, the abyss also gazes into you.
过于执着就会陷入其中,迷失自己,困住自己。 |
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He who fights with monsters should look to it that he himself does not become a monster, when you gaze long into the abyss, the abyss also gazes into you.
过于执着就会陷入其中,迷失自己,困住自己。 |
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