This is the documentation for the latest (main) development branch of mcuxpresso sdk. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

Hardware requirements

Micro USB cable
MIMXRT700-EVK
Personal Computer

Board settings

The MMC_SelectBusTiming in mmccard_init will fail, need to be commented out.

Prepare the Demo

Connect a micro USB cable between the PC host and the CMSIS DAP USB port (J54) on the board
Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
Download the program to the target board.
Launch the debugger in your IDE to begin running the demo.

Running the demo

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

MMCCARD interrupt example.

Card user partition size xxxx bytes

Working condition:

  Voltage: xxxx

  Timing mode: xxxx

  Bus width: xxxx

  Freq : xxxx

Read/Write the card continuously until encounter error....

Write/read one data block......

Compare the read/write content......

The read/write content is consistent.

Write/read multiple data blocks......

Compare the read/write content......

The read/write content is consistent.

Erase data groups......

Input 'q' to quit read/write/erase process.

Input other char to read/write/erase data blocks again.