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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¶