NXP Semiconductors LPC1114 Getting Started With

Getting Started with NXP's LPC11XX Cortex-M0 ARM
Microcontrollers
Introduction
Hardware
Software
Code Example 0: Toggle a GPIO Pin
Code Example 1: Read a GPIO Pin
Code Example 2: Setting Up the Oscillator
Code Example 3: Transmitting Data Using the UART
Code Example 4: Receiving Data Using the UART
Code Example 5: Using the Analog to Digital Converter (ADC)
Code Example 6: Transmitting with Synchronous Serial Port (SSP/SPI)
Code Example 7: Setting Up the 16bit Timer for PWM
Code Example 8: Transmitting with I2C
Author's Note:
Introduction
Many engineers use 8 bit microcontrollers because of their low cost and ease of use. 32 bit microcontrollers generally offer higher performance
than 8 bit parts, but many believe their cost is significantly higher than bit uCs and that they are more difficult to use than 8 bit parts. While 32 bit
parts are generally a little more complicated than 8 bit parts, the cost of 8 and 32 bit parts aren't that far apart in many cases. Additionally, the 32
bit parts offer significantly higher performance. In other words, give 32 bit parts a chance!
NXP has introduced a very low cost (i.e. often less than $1 in production volumes) line of 32 bit microcontrollers, the LPC111X family. There are
several other companies also offering some type of ARM Cortex M0 microcontroller. NXP was one of the earliest, but Freescale (Kinetis L), ST
Micro (STM32 F0), and Nuvoton (M051,M058,Mini51,NUC100,NUC122) also have Cortex M0 offerings. This document will give a brief
introduction on how to get up and running using NXP's
The assumption inherent in this document is that most engineers follow a fairly similar method of learning when presented with a new
microcontroller family. They start by getting a development kit and trying to toggle a pin, transmit/receive with a serial port, read an ADC pin
etc. This document will show some very simple examples of how to enable and operate these peripherals. This will not be exhaustive of every
operating mode and every peripheral but, it is hoped that it will cover the basics in sufficient detail to allow an engineer to get up and running
quickly. Also included are some tips regarding custom design of PCBs using these parts (see example schematic and BOM below in the
"Hardware" section.
This document is primarily targeted at those who are familiar with 8 bit microcontrollers, but are interested in learning to use a 32 bit part. It is
hoped that this document can make getting started with a 32 bit part as painless as possible. It is realized that this code is very simplistic, and if
one were going to write production code, there would certainly be other features, such as error checking, that would be needed. This code is
provided purely to provide a simplistic "working" example.
LPC1114 . The code will work on several other members of the LPC11xx family as well.