https://clingyang.github.io/post/mcu_puya/py32f403_firmware_v1_4_5_gpio/ Recent content in PUYA — 通用 IO 口 (GPIO) on CLing Hugo -- gohugo.io en-us CLing Tue, 08 Sep 2026 16:03:27 +0800 https://clingyang.github.io/p/puya-gpio-gpio-%E7%BF%BB%E8%BD%AC%E8%BE%93%E5%87%BA/ Tue, 08 Sep 2026 14:52:21 +0800 https://clingyang.github.io/p/puya-gpio-gpio-%E7%BF%BB%E8%BD%AC%E8%BE%93%E5%87%BA/ <h1 id="gpio--gpio-翻转输出">GPIO — GPIO 翻转输出 </h1><blockquote> <p><strong>固件库</strong>: PY32F403_Firmware V1.4.5<br> <strong>芯片</strong>: PUYA<br> <strong>源文件</strong>: <code>PUYA/PY32F403_Firmware_V1.4.5/Projects/PY32F403-STK/Example/GPIO/GPIO_Toggle/Src/main.c</code></p> </blockquote> <hr> <h2 id="功能简介">功能简介 </h2><p>本示例演示如何配置 GPIO 引脚为输出模式，并通过软件翻转引脚电平。GPIO 是 MCU 最基本的外设，几乎所有项目都会用到。</p> <h2 id="硬件准备">硬件准备 </h2><ul> <li>开发板上的 LED 灯（通常连接在 PA5、PB0、PB1 等引脚）</li> <li>无需额外接线</li> </ul> <h2 id="完整代码">完整代码 </h2><div class="highlight"><div class="chroma"> <table class="lntable"><tr><td class="lntd"> <pre tabindex="0" class="chroma"><code><span class="lnt">1 </span><span class="lnt">2 </span><span class="lnt">3 </span><span class="lnt">4 </span></code></pre></td> <td class="lntd"> <pre tabindex="0" class="chroma"><code class="language-c" data-lang="c"><span class="line"><span class="cl"><span class="cp">#include</span> <span class="cpf">&#34;main.h&#34;</span><span class="cp"> </span></span></span><span class="line"><span class="cl"><span class="cp">#define LED_GPIO_PIN LED3_PIN </span></span></span><span class="line"><span class="cl"><span class="cp">#define LED_GPIO_PORT LED3_GPIO_PORT </span></span></span><span class="line"><span class="cl"><span class="cp">#define LED_GPIO_CLK_ENABLE() LED3_GPIO_CLK_ENABLE() </span></span></span></code></pre></td></tr></table> </div> </div><h2 id="代码讲解">代码讲解 </h2><p>代码结构清晰，主要包含外设初始化配置和主循环中的功能逻辑。请结合注释理解每一步的含义。</p> <h2 id="实验现象">实验现象 </h2><ul> <li>对应 GPIO 引脚电平交替翻转</li> <li>可用示波器或 LED 观察</li> </ul> <h2 id="注意事项">注意事项 </h2><ul> <li>确认 LED 连接的引脚与代码中一致</li> <li>输出模式一般选择推挽输出（Push-Pull）</li> </ul>