https://deguiliu.github.io/tech-notes/tags/sdio/Recent content in SDIO on 技术笔记Hugo -- 0.168.0zh-cnSun, 20 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/embedded_sd_boot_load_flow/Sun, 20 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/embedded_sd_boot_load_flow/上电时已插入的 SD 卡不会产生检测跳变，驱动需主动查询 CDETECT，再通过检测线程、识别线程与文件系统完成挂载。https://deguiliu.github.io/tech-notes/posts/architecture/embedded_block_device_write_path/Fri, 18 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/embedded_block_device_write_path/一次写入要经过四层地址翻译：字节偏移、扇区、设备块号、命令。多数人以为数据在这四层里被拷了四遍，实际一次都没有。