Get Started with the NXP FRDM-MCXN947 Development Board

Develop projects on connectivity, graphics, machine learning, motor control, and sensors

By Dogan Ibrahim

Preface

Chapter 1 • The FRDM-MCXN947 Development Board

1.1 Overview

1.2 The FRDM-MCXN947 Development Board hardware

1.2.1 On-board connectors
1.2.2 The MCU
1.2.3 Jumpers on the board
1.2.4 Push buttons on the board
1.2.5 LEDs on the board
1.2.6 Ethernet interface
1.2.7 FlexCAN interface
1.2.8 I3C sensor interface
1.2.9 SD card interface

1.3 Starting Up – demo program

1.4 MCX N Series microcontrollers

Chapter 2 • MCUXpresso and the Software Development Kit (SDK)

2.1 Overview

2.2 Installing the MCUXpresso IDE and SDK

2.3 Testing the installation

2.3.1 Some information on the program
2.3.2 Modified program

2.4 Creating a project from scratch

2.5 Exporting a project

2.6 Importing an exported project

2.7 MCUXpresso for Visual Studio Code

Chapter 3 • Simple Program Examples and Debugging

3.1 Software-only programs

3.2 Example 1: Sum of integer numbers
3.3 Example 2: Table of squares
3.4 Example 3: Centigrade to Fahrenheit
3.5 Example 4: Times table
3.6 Example 5: Table of trigonometric sine
3.7 Example 6: Table of trigonometric sine, cosine, and tangent
3.8 Example 7: Integer calculator
3.9 Example 8: Solution of a quadratic equation
3.10 Example 9: Squares and cubes of numbers
3.11 Example 10: Factorial of a number
3.12 Example 11: Check for prime number
3.13 Example 12: Matrix addition
3.14 Example 13: Matrix transpose

3.15 Debugging a project

3.15.1 Example debug session

Chapter 4 • LED Projects

4.1 Overview

4.2 Project 1: Flashing the on-board red and green LEDs
4.3 Project 2: Flashing an external LED
4.4 Project 3: LED flashing as Morse SOS signal
4.5 Project 4: Alternately flashing two LEDs
4.6 Project 5: Chasing LEDs
- 4.6.1 More efficient program
- 4.6.2 Using PortClear and PortSet functions
4.7 Project 6: Binary counting LEDs
4.8 Project 7: Random flashing LEDs
4.9 Project 8: Lucky day of the week
4.10 Project 9: Binary up/down counter with LEDs
4.11 Project 10: Binary event counter with LEDs

Chapter 5 • 7-Segment LED Displays

5.1 Overview

5.2 7-Segment LED display structure

5.3 Project 1: 7-Segment 1-digit LED counter
5.4 Project 2: 7-Segment 4-digit multiplexed LED display
5.5 Project 3: 7-Segment 4-digit multiplexed LED display counter – timer interrupts
5.6 Project 4: 7-Segment 4-digit multiplexed LED display counter – blanking leading zeroes
5.7 Project 5: Conveyor belt goods counter with 7-Segment 4-digit multiplexed LED display counter
- 5.7.1 The LDR

Chapter 6 • Using Serial Communication

6.1 Overview

6.2 Project 1: Serial communication between two FRDM-MCXN947 development boards

Chapter 7 • I2C and I3C Bus Interface

7.1 Overview

7.2 The I2C bus

7.3 The I3C bus

7.4 Differences between the I2C and I3C

7.5 Project 1: Port expander using the I3C bus

7.6 Project 2: TMP102 temperature sensor

Chapter 8 • SPI Bus Interface

8.1 Overview

8.2 Project 1: Port expander

Chapter 9 • Using LCDs

9.1 Overview

9.2 The HD44780 LCD module

9.3 Connecting the LCD to the development board

9.3 Project 1: Displaying text on LCD
9.4 Project 2: Using LCDs – simple up counter
9.5 Including the LCD codes in a program
9.6 Project 3: Using LCDs – simple up counter – including LCD header file
9.7 Project 4: LCD based conveyor belt goods counter
9.8 Project 5: Using external interrupts
9.9 Project 6: Event counter – Using external interrupts
9.10 Project 7: LCD dice

Chapter 10 • Analog to Digital Converter (ADC)

10.1 Overview

10.2 Project 1: Voltmeter – Output on console
10.3 Project 2: Voltmeter – Output on LCD
10.4 Project 3: Analogue temperature sensor
10.5 Project 4: ON/OFF temperature controller
10.6 Project 5: ON/OFF temperature controller – using LCD
10.7 Project 6: Measuring the ambient light intensity
10.8 Project 7: Ohmmeter
10.9 Project 8: Measuring the temperature using a thermistor
10.10 Project 9: Temperature measurement using the MCU sensor
- 10.10.1 The P3T1755DP temperature sensor

Chapter 11 • Using Pulse Width Modulation (PWM)

11.1 Overview

11.2 Basic theory of the pulse width modulation

11.3 Features of the FRDM-MCXN947 PWM modules

11.4 Operation of the PWM

11.5 Project 1: Mosquito Repeller

11.5.1 The original program (see the original programfile: readme_md)
11.5.2 The modified program

Chapter 12 • Electric Motors

12.1 Overview

12.2 Project 1: Two-speed motor speed control
12.3 Project 2: Changing the motor speed and direction
- 12.3.1 Using an H-bridge module

Chapter 13 • Digital to Analog Converter (DAC) Projects

13.1 Overview

13.2 Project 1: Generating square wave signal with a peak up to +3.3V
13.3 Project 2: Generating sawtooth wave signal
13.4 Project 3: Generating triangle wave signal
13.5 Project 4: Generating sine wave signal

Chapter 14 • Operational Amplifiers

14.1 Overview

14.2 Non-inverting amplifier mode
14.3 Inverting amplifier mode
14.4 Project 1: Non-inverting amplifier with a gain of 3

Chapter 15 • The UTICK Timer

15.1 Overview

15.2 Project 1: Generating 1 second delays – Onetime mode
15.3 Project 2: Generating 1 second delays – Onetime mode with interrupt service routine
15.4 Project 3: Generating 1 second delays – Repeat mode with interrupt service routine

Chapter 16 • Real Time Clock (RTC)

16.1 Overview

16.2 Project 1: Set and display the absolute current date and time
16.3 Project 2: Read date and time from the keyboard and load to the RTC

Chapter 17 • The LPTIMER (LPTMR)

17.1 Overview

17.2 Project 1: Creating interrupts at required intervals

Chapter 18 • The FreeRTOS

18.1 Overview

18.2 Project 1: Simple 2 task application

Chapter 19 • Using the CMSIS-DSP Library

19.1 Overview

19.2 Project 1: Matrix addition, multiplication, and transpose

Chapter 20 • Using the FlexIO Module, Touch Screen, Neural Networks, and some others

20.1 Overview

20.2 The FlexIO module

20.2.1 Project 1: Using the FlexIO UART interface – Communication with a PC

20.3 Touch Sensing Input module (TSI)

20.4 Cyclic Redundancy Check module (CRC)

20.5 Frequency Measurement module (FREQME)

20.6 Synchronous Audio Interface module (SAI)

20.7 Controller Area Network module (FlexCAN)

20.8 Security system

20.9 Neural Processing Unit (NPU)

20.9.1 Demo Neural Network program: tflm_label_image

Chapter 21 • Demo Programs

21.1 Overview

21.2 Accessing the demo programs

21.3 List of demo programs

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