Hardware requirements

  • USB-C cable

  • Loopback network cable RJ45 standard (optional)

  • FRDM-MCXE247 board

  • Personal Computer

Board settings

No special settings are required.

Prepare the Demo

  1. Connect a USB cable between the host PC and the MCU-LINK USB port on the target 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. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.

Running the demo

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

ENET example start.
The 1 frame transmitted success!
 A frame received. the length 1000  Dest Address ff:ff:ff:ff:ff:ff Src Address d4:be:d9:45:22:60
The 2 frame transmitted success!
 A frame received. the length 1000  Dest Address ff:ff:ff:ff:ff:ff Src Address d4:be:d9:45:22:60
The 3 frame transmitted success!
 A frame received. the length 1000  Dest Address ff:ff:ff:ff:ff:ff Src Address d4:be:d9:45:22:60

......

The 20 frame transmitted success!
 A frame received. the length 1000  Dest Address ff:ff:ff:ff:ff:ff Src Address d4:be:d9:45:22:60

Optionally, you may use a loop back cable

Make a loopback network cable:

      568B standard 	 Unknown standard
J1    orange+white       green+white
J2    orange             green
J3    green+white        orange+white
J4    blue               brown+white
J5    blue+white         brown
J6    green              orange
J7    brown+white        blue
J8    brown              blue+white

Connect J1 => J3, J2 => J6, J4 => J7, J5 => J8. 10/100M transfer only requires J1, J2, J3, J6, and 1G transfer requires all 8 pins. Check your net cable color order and refer to the 568B standard or the other standard. If your cable’s color order is not shown in the list, please connect J1~J8 based on your situation.

  1. Set CONFIG_APP_USES_LOOPBACK_CABLE=y in .config (or add/change #define APP_USES_LOOPBACK_CABLE 1 in mcux_config.h if you don’t use Kconfig) and rebuild the example.

  2. Insert loopback network cable to Ethernet RJ45 port.

  3. Run the demo in the same way as described earlier.