Insert a MicroSD card into the onboard SD card reader of RTL8722DM_MINI board

The programming of the Ameba RTL8722DM can be done using Arduino IDE which makes it very easy to write code and upload code to the Ameba Board.

To open the code, go to "Files" - > "Examples" -> "AmebaFatfsSDIO" -> "create_folder".

Verify and upload the code. Press the reset button on Ameba once the uploading is complete.

In the sample code, we first create a folder “testdir”, then text file “test.txt” with content “hello world!”. Read the file and print content to serial monitor.

Next, insert SD card into card reader, and check whether the operations succeeded.