Hardware requirements

  • Type-C USB cable

  • FRDM-MCXN947 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 type-c USB cable between the PC host and the MCU-Link USB port (J17) 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 interrupt example in the terminal window:

Mailbox interrupt example
Copy CORE1 image to address: 0x2004e000, size: 6940
Write to the secondary core mailbox register: 1
Read value from the primary core mailbox register: 2
Write to the secondary core mailbox register: 3
Read value from the primary core mailbox register: 4
Write to the secondary core mailbox register: 5
Read value from the primary core mailbox register: 6
Write to the secondary core mailbox register: 7
.
.
.

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.