nRF52 DK¶
Overview¶
The nRF52 Development Kit (PCA10040) hardware provides support for the Nordic Semiconductor nRF52832 ARM Cortex-M4F CPU and the following devices:
ADC
CLOCK
FLASH
GPIO
I2C
MPU
NVIC
PWM
RADIO (Bluetooth Low Energy)
RTC
Segger RTT (RTT Console)
SPI
UART
WDT
nRF52 DK (Credit: Nordic Semiconductor)¶
More information about the board can be found at the nRF52 DK website 1. The Nordic Semiconductor Infocenter 2 contains the processor’s information and the datasheet.
Hardware¶
nRF52 DK has two external oscillators. The frequency of the slow clock is 32.768 kHz. The frequency of the main clock is 32 MHz.
Supported Features¶
The nrf52dk_nrf52832 board configuration supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
ADC |
on-chip |
adc |
CLOCK |
on-chip |
clock_control |
FLASH |
on-chip |
flash |
GPIO |
on-chip |
gpio |
I2C(M) |
on-chip |
i2c |
MPU |
on-chip |
arch/arm |
NVIC |
on-chip |
arch/arm |
PWM |
on-chip |
pwm |
RADIO |
on-chip |
Bluetooth |
RTC |
on-chip |
system clock |
RTT |
Segger |
console |
SPI(M/S) |
on-chip |
spi |
UART |
on-chip |
serial |
WDT |
on-chip |
watchdog |
Other hardware features are not supported by the Zephyr kernel. See nRF52 DK website 1 and Nordic Semiconductor Infocenter 2 for a complete list of nRF52 Development Kit board hardware features.
Connections and IOs¶
LED¶
LED1 (green) = P0.17
LED2 (green) = P0.18
LED3 (green) = P0.19
LED4 (green) = P0.20
LD5 (red/green) = OB LED 1/2
Push buttons¶
BUTTON1 = SW1 = P0.13
BUTTON2 = SW2 = P0.14
BUTTON3 = SW3 = P0.15
BUTTON4 = SW4 = P0.16
BOOT = SW5 = boot/reset
External Connectors¶
J-Link Prog Connector
PIN # |
Signal Name |
|---|---|
1 |
VDD |
2 |
IMCU_TMSS |
3 |
GND |
4 |
IMCU_TCKS |
5 |
V5V |
6 |
IMCU_TDOS |
7 |
Cut off |
8 |
IMCU_TDIS |
9 |
Cut off |
10 |
IMCU_RESET |
Debug IN
PIN # |
Signal Name |
NRF52832 Functions |
|---|---|---|
1 |
VDD |
N/A |
2 |
SWDIO |
SWDIO |
3 |
GND |
N/A |
4 |
SWDCLK |
SWDCLK |
5 |
GND |
N/A |
6 |
P0.18 |
P0.18 / TRACEDATA[0] / SWO |
7 |
Cut off |
N/A |
8 |
Cut off |
N/A |
9 |
GND |
N/A |
10 |
P0.21 |
P0.21 / RESET |
Debug OUT
PIN # |
Signal Name |
|---|---|
1 |
EXT_VTG |
2 |
EXT_SWDIO |
3 |
GND |
4 |
EXT_SWDCLK |
5 |
GND |
6 |
EXT_SWO |
7 |
Cut off |
8 |
Cut off |
9 |
EXT_GND_DETECT |
10 |
EXT_RESET |
Shield Debug and Current measurement
PIN # |
Signal Name |
|---|---|
1 |
VDD_nRF |
2 |
VDD |
3 |
SH_VTG |
4 |
SH_SWDIO |
5 |
SH_SWDCLK |
6 |
SH_SWO |
7 |
SH_RESET |
8 |
SH_GND_DETECT |
Auxiliary
PIN # |
Signal Name |
NRF52832 Functions |
|---|---|---|
1 |
P0.00 |
P0.00 / XL1 |
2 |
P0.01 |
P0.01 / XL2 |
3 |
P0.21 |
P0.21 / RESET |
4 |
P0.05_C |
P0.05 / AIN3 |
5 |
P0.06_C |
P0.06 |
6 |
P0.07_C |
P0.07 |
7 |
P0.08_C |
P0.08 |
8 |
P0.09 |
P0.09 / NFC1 |
9 |
P0.10 |
P0.10 / NFC2 |
Arduino Headers¶
P1/P7 Power
PIN # |
Signal Name |
NRF52832 Functions |
|---|---|---|
1 |
VDD |
N/A |
2 |
VDD |
N/A |
3 |
RESET |
P0.21 / RESET |
4 |
VDD |
N/A |
5 |
V5V |
N/A |
6 |
GND |
N/A |
7 |
GND |
N/A |
8 |
VIN |
N/A |
P2/P8 Analog in
PIN # |
Signal Name |
NRF52832 Functions |
|---|---|---|
1 |
A0 |
P0.03 / AIN1 |
2 |
A1 |
P0.04 / AIN2 |
3 |
A2 |
P0.28 / AIN4 |
4 |
A3 |
P0.29 / AIN5 |
5 |
A4 |
P0.30 / AIN6 |
6 |
A5 |
P0.31 / AIN7 |
P3/P9 Digital I/O
PIN # |
Signal Name |
NRF52832 Functions |
|---|---|---|
1 |
D0 (RX) |
P0.11 |
2 |
D1 (TX) |
P0.12 |
3 |
D2 |
P0.13 |
4 |
D3 |
P0.14 / TRACEDATA[3] |
5 |
D4 |
P0.15 / TRACEDATA[2] |
6 |
D5 |
P0.16 / TRACEDATA[1] |
7 |
D6 |
P0.17 |
8 |
D7 |
P0.18 / TRACEDATA[3] / SWO |
P4/P10 Digital I/O
PIN # |
Signal Name |
NRF52832 Functions |
|---|---|---|
1 |
D8 |
P0.19 |
2 |
D9 |
P0.20 / TRACECLK |
3 |
D10 (SS) |
P0.22 |
4 |
D11 (MOSI) |
P0.23 |
5 |
D12 (MISO) |
P0.24 |
6 |
D13 (SCK) |
P0.25 |
7 |
GND |
N/A |
8 |
AREF |
P0.02 / AIN0 |
9 |
SDA |
P0.26 |
10 |
SCL |
P0.27 |
P5/P11
PIN # |
Signal Name |
NRF52832 Functions |
|---|---|---|
1 |
D12 (MISO) |
P0.24 |
2 |
V5V |
N/A |
3 |
D13 (SCK) |
P0.25 |
4 |
D11 (MOSI) |
P0.23 |
5 |
RESET |
N/A |
6 |
N/A |
N/A |
Programming and Debugging¶
Flashing¶
Follow the instructions in the Nordic nRF5x Segger J-Link page to install and configure all the necessary software. Further information can be found in Flashing. Then build and flash applications as usual (see Building an Application and Run an Application for more details).
Here is an example for the Hello World application.
First, run your favorite terminal program to listen for output.
$ minicom -D <tty_device> -b 115200
Replace <tty_device> with the port where the board nRF52 DK
can be found. For example, under Linux, /dev/ttyACM0.
Then build and flash the application in the usual way.
# From the root of the zephyr repository
west build -b nrf52dk_nrf52832 samples/hello_world
west flash
Debugging¶
Refer to the Nordic nRF5x Segger J-Link page to learn about debugging Nordic boards with a Segger IC.
Testing the LEDs and buttons in the nRF52 DK¶
There are 2 samples that allow you to test that the buttons (switches) and LEDs on the board are working properly with Zephyr:
samples/basic/blinky
samples/basic/button
You can build and flash the examples to make sure Zephyr is running correctly on your board. The button and LED definitions can be found in boards/arm/nrf52dk_nrf52832/nrf52dk_nrf52832.dts.