第六集I/O输入输出
<p>什么是GPIO？</p><p><img src="data/attachment/forum/202412/11/130359eikikqkia0b3k7q6.png" alt="image.png" /></p>
<p><img src="data/attachment/forum/202412/11/130436et6rhrakzt5rzrpj.png" alt="image.png" /></p>
<p>然后是按键，因为设置的是准双向口默认是高电平，按钮按下为低电平</p>
<p><img src="data/attachment/forum/202412/11/131216vurlufof8nnouulo.png" alt="image.png" /></p>
<p>注意要开启控制LED的三极管，否则灯不会亮</p>
<p><img src="data/attachment/forum/202412/11/131226e52k6dqc65d55ig5.png" alt="image.png" /></p>
<p>可以利用while死循环来松手检测</p>
<p><img src="data/attachment/forum/202412/11/132111r1cllplnuudpwp6u.png" alt="image.png" title="image.png" /></p>
<p><img src="data/attachment/forum/202412/11/132236qd0up06tgzptmndx.png" alt="image.png" title="image.png" /></p>
<p><img src="data/attachment/forum/202412/11/131234tekhuthwkrqgekee.png" alt="image.png" /></p>
<p><img src="data/attachment/forum/202412/11/131237ldwdisfx1hhj41ii.png" alt="image.png" /></p>
<p>使用Delay需要添加头文件并设置这三个<img src="data/attachment/forum/202412/11/131245vnziaqh6hagg7e2f.png" alt="image.png" /></p>
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