Precautions for using stm32 official SD card driver-EEWORLD

Collect

Friends who use the SD card driver provided by the stm32 CUBE library should note:

1. Applicable to MMC cards. I haven't tested it. MMC cards are now collectibles. Who would still use them? So, ST team, please be rigorous.

2. The SD card initialization failed because after sending CMD0, CMD1 was sent (CMD1 is a unique command of MMC card, SD card does not need to send CMD1), and the read and write driver function also had problems (the block size of SD card was modified regardless of the situation, all set to 512 bytes), because of this, I wasted 3 days of time, and had no choice but to rewrite the driver myself. So, if you want to use SD card in the project, you must modify the driver.

3. In fact, many official routines have bugs, so don’t be too superstitious about official things.

In short, the official version also has pitfalls, so use it with caution!

Keywords：stm32 Reference address：Precautions for using stm32 official SD card driver

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