46 lines
1.8 KiB
Plaintext
46 lines
1.8 KiB
Plaintext
Overview
|
|
========
|
|
The Hello World demo application provides a sanity check for the new SDK build environments and board bring up. The Hello
|
|
World demo prints the "Hello World" string to the terminal using the SDK UART drivers. The purpose of this demo is to
|
|
show how to use the UART, and to provide a simple project for debugging and further development.
|
|
Note: Please input one character at a time. If you input too many characters each time, the receiver may overflow
|
|
because the low level UART uses simple polling way for receiving. If you want to try inputting many characters each time,
|
|
just define DEBUG_CONSOLE_TRANSFER_NON_BLOCKING in your project to use the advanced debug console utility.
|
|
|
|
Toolchain supported
|
|
===================
|
|
- IAR embedded Workbench 9.20.2
|
|
- Keil MDK 5.36
|
|
- GCC ARM Embedded 10.3.1
|
|
- MCUXpresso 11.5.0
|
|
|
|
Hardware requirements
|
|
=====================
|
|
- Mini/micro USB cable
|
|
- 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 micro USB cable between the PC host and the CMSIS DAP USB port (P6) 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 the output of the hello world demo in the terminal window:
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
hello world.
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|