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

Sample mailbox application¶

Overview¶

Some NXP microcontrollers from LPC family are dual-core, this sample application uses a mailbox to send messages from one processor core to the other.

This sample applies to the following boards:

NXP LPCXPRESSO54114, two core processors (Cortex-M4F and Cortex-M0+)
NXP LPCXPRESSO55S69, two core processors (dual Cortex-M33)

Requirements¶

NXP LPCXPRESSO54114 board
NXP LPCXPRESSO55S69 board

Building the application for lpcxpresso54114_m4¶

# From the root of the zephyr repository
west build -b lpcxpresso54114_m4 samples/subsys/ipc/ipm_mcux
west debug

Building the application for lpcxpresso55s69_cpu0¶

# From the root of the zephyr repository
west build -b lpcxpresso55s69_cpu0 samples/subsys/ipc/ipm_mcux
west debug

Running¶

Open a serial terminal (minicom, putty, etc.) and connect the board with the following settings:

Speed: 115200
Data: 8 bits
Parity: None
Stop bits: 1

Reset the board and the following message will appear on the corresponding serial port:

***** Booting Zephyr OS v1.11.0-764-g4e3007a *****
Hello World from MASTER! arm
Received: 1
...
Received: 99