SPI_TwoBoards_FullDuplexMaster_Polling on CLing https://clingyang.github.io/tags/spi_twoboards_fullduplexmaster_polling/ Recent content in SPI_TwoBoards_FullDuplexMaster_Polling on CLing Hugo -- gohugo.io en-us CLing Tue, 08 Sep 2026 16:03:27 +0800 PUYA SPI — SPI_TwoBoards_FullDuplexMaster_Polling https://clingyang.github.io/p/puya-spi-spi_twoboards_fullduplexmaster_polling/ Tue, 08 Sep 2026 14:52:21 +0800 https://clingyang.github.io/p/puya-spi-spi_twoboards_fullduplexmaster_polling/ <h1 id="spi--spi_twoboards_fullduplexmaster_polling">SPI — SPI_TwoBoards_FullDuplexMaster_Polling </h1><blockquote> <p><strong>固件库</strong>: PY32F002B_Firmware V1.2.1<br> <strong>芯片</strong>: PUYA<br> <strong>源文件</strong>: <code>PUYA/PY32F002B_Firmware_V1.2.1/Projects/PY32F002B-STK/Example/SPI/SPI_TwoBoards_FullDuplexMaster_Polling/Src/main.c</code></p> </blockquote> <hr> <h2 id="功能简介">功能简介 </h2><p>本示例演示 SPI 全双工通信。主机和从机可以同时收发数据，速度比 I2C 快得多。适合高速数据传输场景。</p> <h2 id="硬件准备">硬件准备 </h2><ul> <li>需要主机和从机两块板子，或使用回环连接（MOSI→MISO）</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></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 DATA_LENGTH 15 </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>主机和从机互相交换数据</li> <li>数据校验通过则 LED 指示成功</li> </ul> <h2 id="注意事项">注意事项 </h2><ul> <li>CPOL 和 CPHA 必须主机从机一致</li> <li>片选（CS）信号要手动拉低选中从机</li> <li>时钟频率不能超过从设备的最大速率</li> </ul> PUYA SPI — SPI_TwoBoards_FullDuplexMaster_Polling https://clingyang.github.io/p/puya-spi-spi_twoboards_fullduplexmaster_polling/ Tue, 08 Sep 2026 14:52:21 +0800 https://clingyang.github.io/p/puya-spi-spi_twoboards_fullduplexmaster_polling/ <h1 id="spi--spi_twoboards_fullduplexmaster_polling">SPI — SPI_TwoBoards_FullDuplexMaster_Polling </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/SPI/SPI_TwoBoards_FullDuplexMaster_Polling/Src/main.c</code></p> </blockquote> <hr> <h2 id="功能简介">功能简介 </h2><p>本示例演示 SPI 全双工通信。主机和从机可以同时收发数据，速度比 I2C 快得多。适合高速数据传输场景。</p> <h2 id="硬件准备">硬件准备 </h2><ul> <li>需要主机和从机两块板子，或使用回环连接（MOSI→MISO）</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></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 DATA_LENGTH 15 </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>主机和从机互相交换数据</li> <li>数据校验通过则 LED 指示成功</li> </ul> <h2 id="注意事项">注意事项 </h2><ul> <li>CPOL 和 CPHA 必须主机从机一致</li> <li>片选（CS）信号要手动拉低选中从机</li> <li>时钟频率不能超过从设备的最大速率</li> </ul> PUYA SPI — SPI_TwoBoards_FullDuplexMaster_Polling https://clingyang.github.io/p/puya-spi-spi_twoboards_fullduplexmaster_polling/ Tue, 08 Sep 2026 14:52:21 +0800 https://clingyang.github.io/p/puya-spi-spi_twoboards_fullduplexmaster_polling/ <h1 id="spi--spi_twoboards_fullduplexmaster_polling">SPI — SPI_TwoBoards_FullDuplexMaster_Polling </h1><blockquote> <p><strong>固件库</strong>: PY32L020_Firmware V1.2.1<br> <strong>芯片</strong>: PUYA<br> <strong>源文件</strong>: <code>PUYA/PY32L020_Firmware_V1.2.1/Projects/PY32L020-STK/Example/SPI/SPI_TwoBoards_FullDuplexMaster_Polling/Src/main.c</code></p> </blockquote> <hr> <h2 id="功能简介">功能简介 </h2><p>本示例演示 SPI 全双工通信。主机和从机可以同时收发数据，速度比 I2C 快得多。适合高速数据传输场景。</p> <h2 id="硬件准备">硬件准备 </h2><ul> <li>需要主机和从机两块板子，或使用回环连接（MOSI→MISO）</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></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 DATA_LENGTH 15 </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>主机和从机互相交换数据</li> <li>数据校验通过则 LED 指示成功</li> </ul> <h2 id="注意事项">注意事项 </h2><ul> <li>CPOL 和 CPHA 必须主机从机一致</li> <li>片选（CS）信号要手动拉低选中从机</li> <li>时钟频率不能超过从设备的最大速率</li> </ul>