Hardware requirements

  • Micro USB cable

  • MIMXRT685-AUD-EVK board

  • Personal Computer

  • SD card

Board settings

Note: If the sdio card need WL_REG_ON, please connect WL_REG_ON to the JS14.

Prepare the Demo

  1. Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J5) on the board

  2. Open a serial terminal with the following settings:

    • 115200 baud rate

    • 8 data bits

    • No parity

    • One stop bit

    • No flow control

  3. Download the program to the target board.

  4. Launch the debugger in your IDE to begin running the demo. Please insert the SDIO card into card slot(J9)

Running the demo

When the demo runs successfully, the log would be seen on the terminal like:


SDIO card simple example.

Please insert a card into board.

Card inserted.

Read function CIS, in direct way

CIS read successfully

Please note that below log maybe printed according to the card capability.


Read function CIS, in extended way, non-block mode, non-word aligned size

Read function CIS, in extended way, block mode, non-word aligned size

The read content is consistent.