为什么无法初始化SD卡？用的都是库文件，为什么？为什么？
为什么无法初始化SD卡？用的都是库文件，为什么？为什么？为什么？单片机是STM32F407，代码没带操作系统没上文件系统，只是进行初始化都不行，用的都是库中的代码本帖最后由 yygy3748 于 2017-3-23 15:40 编辑
https://www.stmcu.org.cn/faq/index/detail/id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楼主不要着急，慢慢来顺 一下。确定使用的SDIO或者SPI初始化正确，最好是把代码传上来，还有说明硬件使用的接口等等。如果初始化过不去，很可能是接口初始化问题，或者底层的驱动没有接入正确的接口中。 SPI还是SDIO方式？ suoma 发表于 2017-3-22 22:00
SPI还是SDIO方式？
公司的电脑不知什么原因，上传不了附件。用SDIO，用原子的STM32F407的 实验38 SD卡实验 代码测试也初始化不成功，用STM32CubeMX生成的代码也不行，卡是金士顿 8G Class 4的TF卡，但相同的程序用很多年前买的一张512MB的卡，却可以初始化，并能正常读写数数；两个程序对512MB的卡都能正常操作（初始化、读写操作）。但公司要求产品必须能识别8G或16G的卡，你说会不会是卡的问题？但金士顿 8G Class 4的TF卡是前几天在JD上买的。都卡在这里拖了一周了本来还想在三月份把产品搞定的，又得延期了:'( 安 发表于 2017-3-22 17:02
楼主不要着急，慢慢来顺 一下。确定使用的SDIO或者SPI初始化正确，最好是把代码传上来，还有说明硬件使用的 ...
公司的电脑不知什么原因，上传不了附件。用SDIO，用原子的STM32F407的 实验38 SD卡实验 代码测试也初始化不成功，用STM32CubeMX生成的代码也不行，卡是金士顿 8G Class 4的TF卡，但相同的程序用很多年前买的一张512MB的卡，却可以初始化，并能正常读写数数；两个程序对512MB的卡都能正常操作（初始化、读写操作）。但公司要求产品必须能识别8G或16G的卡，你说会不会是卡的问题？但金士顿 8G Class 4的TF卡是前几天在JD上买的。都卡在这里拖了一周了本来还想在三月份把产品搞定的，又得延期了 修改一下驱动，你看一下初始化时，对于4G以上和4G以下代码的处理。 安 发表于 2017-3-23 15:51
修改一下驱动，你看一下初始化时，对于4G以上和4G以下代码的处理。
这是个好思路，我去看一下，你有没有空帮我看一下代码？ 你把SD卡初始化的代码传上来，大家一块看看。