nRF52840-DK

chip:nrf52, chip:nrf52840

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

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

LEDs and Buttons

LEDs

The PCA10056 has 4 user-controllable LEDs:

LED MCU

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

A low output illuminates the LED.

Pushbuttons

BUTTON MCU

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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:

jumbo

This configuration enables many Apache NuttX features. This is mostly to help provide additional code coverage in CI, but also allows for a users to see a wide range of features that are supported by the OS.

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.

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.

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> &