Nicko van Someren 8e3af7d4c8 esp32: Add machine.SDCard class using built-in HW SD/MMC controller.
This adds support for SD cards using the ESP32's built-in hardware SD/MMC
host controller, over either the SDIO bus or SPI.  The class is available
as machine.SDCard and using it can be as simple as:

    uos.mount(machine.SDCard(), '/sd')
2019-06-03 00:37:41 +10:00
..