Initial Support for Windows.Storage on Esp32

[AdrianSoundy]

Description

Created versions of Windows.Storage that use the ESP32 IDF - VFS(virtual file system)
Added extra methods to allow the SDcard devices to be mounted from managed code
Currently supports 1 device MMC(4 bit or 1 bit) or SPI

Doesn't look like ESP32 IDF has support for Card present events or not in example code.
Currently working on the SDCard being in slot from boot and the card is mounted from managed code.

Motivation and Context

Needed to be implemented

Testing

Tested with following ESP32 devices:-

ESP DevKitC - SPI
ESP32 Wrover v4 - MMC 4 bit
ESP32 Olimex EVB - MMC 1 bit

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Signed-off-by: adriansoundy [email protected]

[nfbot]

Hi @AdrianSoundy,

I'm nanoFramework bot.
Thank you for your contribution!

A human will be reviewing it shortly. 😉

[josesimoes]

I've fixed a couple of issues on ChibiOS/STM32 that were preventing the build.
Please look at the others that I've commented.