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NXP LPCXPRESSO54114

Overview

The LPCXpresso54114 board has been developed by NXP to enable evaluation of and prototyping with the low-power LPC54110 family of MCUs. LPCXpresso* is a low-cost development platform available from NXP supporting NXP’s ARM-based microcontrollers. LPCXpresso is an end-to-end solution enabling embedded engineers to develop their applications from initial evaluation to final production.

Hardware

LPC54114 dual-core (M4F and dual M0) MCU running at up to 100 MHz
On-board high-speed USB based debug probe with CMSIS-DAP and J-Link protocol support, can debug the on-board LPC54114 or an external target
External debug probe option
Tri-color LED, target Reset, ISP & interrupt/user buttons for easy testing of software functionality
Expansion options based on Arduino UNO and Pmod™, plus additional expansion port pins
On-board 1.8 V and 3.3 V regulators plus external power supply option
8 Mb Macronix MX25R SPI flash
Built-in MCU power consumption and supply voltage measurement
UART, I²C and SPI port bridging from LPC54114 target to USB via the on-board debug probe
FTDI UART connector

For more information about the LPC54114 SoC and LPCXPRESSO54114 board:

Supported Features

The lpcxpresso54114 board configuration supports the following hardware features:

Interface	Controller	Driver/Component
NVIC	on-chip	nested vector interrupt controller
SYSTICK	on-chip	systick
IOCON	on-chip	pinmux
GPIO	on-chip	gpio
I2C	on-chip	i2c
SPI	on-chip	spi
USART	on-chip	serial port-polling
CLOCK	on-chip	clock_control

The default configuration for each core can be found in the defconfig files:

boards/arm/lpcxpresso54114/lpcxpresso54114_m4_defconfig boards/arm/lpcxpresso54114/lpcxpresso54114_m0_defconfig

Other hardware features are not currently supported by the port.

Connections and IOs

The LPC54114 SoC has IOCON registers, which can be used to configure the functionality of a pin.

Name	Function	Usage
PIO0_0	USART	USART RX
PIO0_1	USART	USART TX
PIO0_18	SPI	SPI MISO
PIO0_19	SPI	SPI SCK
PIO0_20	SPI	SPI MOSI
PIO0_25	I2C	I2C SCL
PIO0_26	I2C	I2C SDA
PIO0_29	GPIO	RED LED
PIO1_1	SPI	SPI SSEL2
PIO1_9	GPIO	BLUE_LED
PIO1_10	GPIO	GREEN LED

System Clock

The LPC54114 SoC is configured to use the internal FRO at 48MHz as a source for the system clock. Other sources for the system clock are provided in the SOC, depending on your system requirements.

Serial Port

The LPC54114 SoC has 8 FLEXCOMM interfaces for serial communication. One is configured as USART for the console and the remaining are not used.

Programming and Debugging

Build and flash applications as usual (see Building an Application and Run an Application for more details).

Configuring a Debug Probe

A debug probe is used for both flashing and debugging the board. This board is configured by default to use the LPC-Link2 CMSIS-DAP Onboard Debug Probe, however the pyOCD Debug Host Tools do not support this probe so you must reconfigure the board for one of the following debug probes instead.

LPC-Link2 J-Link Onboard Debug Probe 

Install the J-Link Debug Host Tools and make sure they are in your search path.

Follow the instructions in LPC-Link2 J-Link Onboard Debug Probe to program the J-Link firmware.

Configuring a Console

Regardless of your choice in debug probe, we will use the LPC-Link2 microcontroller as a usb-to-serial adapter for the serial console.

Connect a USB cable from your PC to J5

Use the following settings with your serial terminal of choice (minicom, putty, etc.):

Speed: 115200
Data: 8 bits
Parity: None
Stop bits: 1

Flashing

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b lpcxpresso54114_m4 samples/hello_world
west flash

Open a serial terminal, reset the board (press the SW4 button), and you should see the following message in the terminal:

***** Booting Zephyr OS v1.14.0-rc1 *****
Hello World! lpcxpresso54114_m4

Debugging