Thanks to Adrian Soundly and Jose Somoes and everyone helped make "Storage" possible for nanoFramework. Storage is still under construction check the samples here https://github.com/nanoframework/Samples/tree/master/samples/Storage for updates and changes. This library is for SD card readers connected using SPI. Other SD card options below were not tested.
Mount a MMC sdcard using 4 bit data ( e.g Wrover boards ) Example: SDCard.MountMMC(false);
Mount a MMC sdcard using 1 bit data ( e.g Olimex EVB boards ) Example: SDCard.MountMMC(true);
You may need a separate 3.3v power source for the SD card reader
The card reader that I used for the test is the SparkFun microSD breakout board https://www.sparkfun.com/products/544
This library also supports internal storage for the ESP32 boards. Serial Peripheral Interface Flash File System (SPIFFS).
SPIFFS is a lightweight file system connected by SPI bus. The configuration data space reserved for network, wireless,
certificates, and user data is 256K. The area reserved for SPIFFS is 0x2D0000, 0x40000.
