ESP32 - supported types of microsd cards

[sazanof]

In the logs of the working / failing card, the main difference I see, is the error code returned by the library when it tries to get the characteristics of the card. While the working card responses with 0x106 which means not supported, the failing card case shows 0x107 which means timeout. Situation very similar to this was discussed here:
https://github.com/espressif/esp-idf/issues/8582
and here:
https://github.com/espressif/esp-idf/issues/8683

You may check the signal idle voltage levels at your SD card and if you have oscilloscope, then also the voltage range of the signal to exclude the cases described in the links above.

Hello! I did more tests. I install Arduino with ESP32 boards and check SD SPI sketch example.

ALL cards are WORK! 1,4,8,16,32 GB

In the case of esp-idf, only 64GB cards work. What's wrong with the example https://github.com/espressif/esp-idf/tr ... card/sdspi? Where to dig?

I tried different host freq too....