How to use SPI for SD card on BW16 based on Arduino

Arduino
1

How to use SPI for SD card control on BW16(RTL8720DN) based on Arduino?
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I know that SDIO is not supported for BW16, but how should I use SPI for SD card operation? I try to #include <SPI.h> and #include <SD.h> but it doesn’t work and looks like the SD.h is recognized from the core lib.
Is there existing lib could support this?

2

Hi @george

unfortunately, there is no library support for using a SD card with SPI for the BW16