MCUXpresso_LPC55S69/boards/lpcxpresso55s69/demo_apps/hello_world_virtual_com/cm33_core0

Overview

Hello World Virtual Com demonstrates the use of virtual com to print the "Hello World" string to the terminal. Different with Hello World demo (a HW UART peripheral is used to transmit data), the demo transmits data based on a serial port simulated by the USB device stack on target board side via USB peripheral. The purpose of this demo is to demonstrate how to use virtual com and provide a simple project for debugging and further development.

SDK version

• Version: 2.15.000

Toolchain supported

• Keil MDK 5.38.1
• GCC ARM Embedded 12.2
• MCUXpresso 11.8.0
• IAR embedded Workbench 9.40.1

Hardware requirements

• Two Micro USB cables
• LPCXpresso55s69 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 USB cable between the host PC and the OpenSDA USB port on the target board for downloading the program and supply power for the board, connect another USB cable between host PC and USB port on the target board.
2. Download the program to the target board.
3. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
4. Open a serial terminal(like putty) to communicate with the board via virtual com.

Running the demo

The log below shows the output of the hello world demo in the terminal window:

hello world.

The debug console virtual com will echo back the received characters.