nRF52840-DK

The NRF52840-DK (PCA10056) is a development board for the nRF52840 SoC from Nordic.

Serial Console

The PCA10056 default console is the UART0.

The PCA10056 does not have RS-232 drivers or serial connectors on board. UART0 is connected to the virtual COM port:

Signal	PIN
UART0-RX	P0.08
UART0-TX	P0.06

LEDs and Buttons

LEDs

The PCA10056 has 4 user-controllable LEDs:

LED	MCU
LED1	P0.13
LED2	P0.14
LED3	P0.15
LED4	P0.26

A low output illuminates the LED.

Pushbuttons

BUTTON	MCU
BUTTON1	P0.11
BUTTON2	P0.12
BUTTON3	P0.24
BUTTON4	P0.25

Configurations

Each configuration is maintained in a sub-directory and can be selected as follow:

tools/configure.sh nrf52840-dk:<subdir>

Where <subdir> is one of the following:

adc

This configuration shows the use of the ADC peripheral.

buttons

This configuration shows the use of the buttons subsystem.

cdcacm

NuttShell configuration with support for CDC/ACM USB device driver.

composite

NuttShell configuration with support for CDC/ACM with RNDIS composite driver.

highpri

This application demonstrates high priority interrupt feature of the NuttX.

nsh

Basic NuttShell configuration (console enabled in UART0, exposed via J-Link VCOM connection, at 115200 bps).

ostest_tickless

This is a NSH configuration that includes apps/testing/ostest as a builtin and enable support for the tick-less OS.

pwm

This configuration shows the use of the PWM peripheral.

qspi

NuttShell configuration with enabled support for on-board MX25R QSPI memory.

rndis

NuttShell configuration with support for RNDIS USB device driver.

sdc

Enables Nordic’s SoftDevice controller and uses NuttX BLE stack for the host-layer. The btsak application is included as a builtin.

sdc_nimble

Enables Nordic’s SoftDevice controller and uses nimBLE for the host-layer. The nimble test application can be used to enable a simple GATT server.

sx127x

NuttShell configuration with support for sx127x chip.

timer

This configuration shows the use of the TIMER peripheral.

usbnsh

Basic NuttShell configuration (CDCACM console enabled in USB Port, at 115200 bps).

ieee802154_6lowpan

Cheat Sheet. Here is a concise summary of all all the steps needed to run the UDP test (C=Coordinator; E=Endpoint):

C: nsh> i8 wpan0 startpan cd:ab
C: nsh> i8 set saddr 0A:00
C: nsh> i8 set ep_saddr 0B:00
C: nsh> i8 acceptassoc
E: nsh> i8 wpan0 assoc
C: nsh> ifup wpan0
C: nsh> ifconfig          <-- To get the <server-ip>
E: nsh> ifup wpan0
C: nsh> udpserver &
E: nsh> udpclient <server-ip> &