Overview

The bubble level demo demonstrates basic usage of the on-board accelerometer to implement a bubble level. A bubble level utilizes two axes to visually show deviation from a level plane (0 degrees) on a given axis.

The following files are generated by MCUXpresso Config Tools:

peripheral.c/.h: These files are generated by MCUXpresso peripherals tool which could be imported back to the tool.
clock_config.c/.h: These files are generated by MCUXpresso clocks tool which could be imported back to the tool.
pin_mux.c/.h: These files are generated by MCUXpresso pins tool which could be imported back to the tool.

Hardware requirements

Micro USB cable
MC56F80000-EVK board
Personal Computer

Board hardware common setting

Power setting:

Connect J8 pin2 and pin3 Connect J6 pin1 and pin2 Connect J5 pin1 and pin2
Reset pin setting:

Connect J11 pin2 and pin3
Debugger setting:

Connect J13 pin 1-2, 3-4, 5-6, 7-8

Board settings

No special settings are required.

Prepare the Demo

Connect USB cable between the host PC and the J12 USB port on the target board. It setups Multilink and COM port in PC device manager.
Open a serial terminal with the following settings:
- 115200 baud rate
- 8 data bits
- No parity
- One stop bit
- No flow control
Download the program to the target board with Multilink debug configuration.
Launch the debugger in your IDE to begin running the demo.

Running the demo

When the example runs successfully, you can see the similar information from the terminal as shown below.

Welcome to the BUBBLE example

You will see the change of LED brightness when change angles of board

x=  6 y = 22
x=  8 y = 26
x= 10 y = 28
x= 10 y = 28
x= 11 y = 29
x= 11 y = 29

Note:

If the RED LED flashes constantly and the following message is printed on the console: Sensor device initialize failed!

Please check the sensor chip U18

please check if the combo sensor (U18) is presented on the board.