History

Andreas Pokorny b3fdfda914 Bugfix: Put every SPI access between begin / end Transaction (#509 ) The change intrdocues a local RAII helper to simplify maintaining begin/end scopes Signed-off-by: Andreas Pokorny <andreas.pokorny@siemens.com>		2017-07-31 22:46:15 +03:00
..
examples/SD_Test	Added file.close() in manipulation functions (#514 )	2017-07-17 03:44:04 +03:00
src	Bugfix: Put every SPI access between begin / end Transaction (#509 )	2017-07-31 22:46:15 +03:00
library.properties	Add FS, SD and SD_MMC (#256 )	2017-03-10 15:25:38 +01:00
README.md	SD library explanation (#262 )	2017-03-14 14:53:59 +01:00

SD library

This library provides the integration of ESP32 and SD (Secure Digital) cards without additional modules.

Sample wiring diagram:

For others SD formats:

Image source: Wikipedia

- Warning: Some ESP32 modules have different pinouts!

Do I need any additional modules, like Arduino SD module?

No, just wire your SD card directly to ESP32.

What is the difference between SD and SD_MMC libraries?

SD runs on SPI, and SD_MMC uses the SDMMC hardware bus on the ESP32.

Can I change the CS pin?

Yes, just use: SD.begin(CSpin)