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

  • Mini/micro USB cable

  • MCX-N9XX-EVK board

  • Personal Computer

Board settings

No special settings are required.

Prepare the Demo

Note: MCUXpresso IDE project default debug console is semihost

  1. Connect a micro USB cable between the PC host and the MCU-Link USB port (J5) on the board

  2. Open a serial terminal with the following settings (See Appendix A in Getting started guide for description how to determine serial port number):

    • 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

The log below shows example output of the Mailbox mutex example in the terminal window:

Mailbox mutex example
Copy CORE1 image to address: 0x2004e000, size: 6940
Core1 has mailbox mutex, update shared variable to: 1
Core0 has mailbox mutex, update shared variable to: 2
Core1 has mailbox mutex, update shared variable to: 3
Core0 has mailbox mutex, update shared variable to: 4
Core1 has mailbox mutex, update shared variable to: 5
.
.
.

Note: The “Copy CORE1 image to address…” log message is not displayed on the terminal window when MCUXpresso IDE is used. In case of MCUXpresso IDE the secondary core image is copied to the target memory during startup automatically.