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    <title>Open-Drain on RuChen</title>
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    <description>Recent content in Open-Drain on RuChen</description>
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    <managingEditor>2510889344@qq.com (RuChen)</managingEditor>
    <webMaster>2510889344@qq.com (RuChen)</webMaster>
    <copyright>All Rights Reserved © RuChen 2025</copyright>
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      <title>I2C 共享双线事务：主机发起与从机响应的状态机</title>
      <link>https://blog.195481.xyz/embedded/embedded-study/l024-i2c-shared-transaction/</link>
      <pubDate>Tue, 06 Oct 2026 16:00:06 +0800</pubDate>
      <author>2510889344@qq.com (RuChen)</author>
      <guid>https://blog.195481.xyz/embedded/embedded-study/l024-i2c-shared-transaction/</guid>
      <description>建立平台无关的 I2C 共享双线事务模型：主机取得总线、发送地址和读写方向、处理 ACK/NACK、完成写入或读取并以 STOP 释放总线；通过 Host Fake 的开漏线路模型、事件日志、断言和故障注入验证调用流，不把逻辑验证当作 STM32 硬件证据。</description>
      
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      <title>GPIO 配置状态与引脚数据通路：从 Host Fake 到 STM32 资料核对</title>
      <link>https://blog.195481.xyz/embedded/embedded-study/l018-gpio-configuration-data-path/</link>
      <pubDate>Sun, 04 Oct 2026 14:55:13 +0800</pubDate>
      <author>2510889344@qq.com (RuChen)</author>
      <guid>https://blog.195481.xyz/embedded/embedded-study/l018-gpio-configuration-data-path/</guid>
      <description>把 GPIO 理解为配置状态决定数据通路、数据访问读取输入采样或更新输出锁存的外设边界，并用静态 Host Fake 区分输入、推挽输出、开漏释放和非法配置；结果不代表真实 STM32 寄存器、电气测量或上板验证。</description>
      
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