Pebble 2 Duo

Board Overview

Pebble 2 Duo

Name:

p2d

Vendor:

Core Devices LLC

Architecture:

arm

SoC:

nrf52840

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Overview

Pebble 2 Duo is a smart watch based on the nRF52840 series chip SoC.

More information about the watch can be found at the RePebble website [1].

Hardware

Pebble 2 Duo provides the following hardware components:

• Nordic nRF52840

• nPM1300 PMIC for power supply and battery charging

• GD25LE255E 256 Mb QSPI NOR

• Sharp LS013B7DH05 Memory-in-Pixel (MiP) monochrome display

• PWM backlight control using TPS22916 driver

• OPT3001 ambient light sensor

• 4 physical buttons

• LSM6DSOW IMU (accelerometer/gyroscope)

• MMC5603NJ magnetometer

• MSM261DDB020 PDM microphone

• Speaker driven by DA7212 audio codec

• LRA driven by TI DRV2604 haptic driver

• Programming connector

Supported Features

The p2d board supports the hardware features listed below.

on-chip / on-board

Feature integrated in the SoC / present on the board.

2 / 2

Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.

vnd,foo

Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

p2d/nrf52840 target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M4F CPU1	arm,cortex-m4f
ADC	on-chip	Nordic Semiconductor nRF family SAADC node1	nordic,nrf-saadc
ARM architecture	on-chip	Nordic UICR (User Information Configuration Registers)1	nordic,nrf-uicr
	on-chip	Nordic EGU (Event Generator Unit)6	nordic,nrf-egu
	on-chip	Nordic nRF family ACL (Access Control List)1	nordic,nrf-acl
	on-chip	Nordic nRF family MWU (Memory Watch Unit)1	nordic,nrf-mwu
Audio	on-chip	Nordic PDM (Pulse Density Modulation interface)1	nordic,nrf-pdm
Clock control	on-chip	Nordic nRF clock control node1	nordic,nrf-clock
	on-chip	Nordic nRF high-frequency crystal oscillator (nRF52 series)1	nordic,nrf52-hfxo
Comparator	on-chip	Nordic nRF COMP (analog COMParator)1	nordic,nrf-comp
Counter	on-chip	Nordic nRF timer node5	nordic,nrf-timer
Cryptographic accelerator	on-chip	Nordic ECB (AES electronic codebook mode encryption)1	nordic,nrf-ecb
	on-chip	Nordic nRF family CCM (AES CCM mode encryption)1	nordic,nrf-ccm
	on-chip	ARM TrustZone CryptoCell 3101	arm,cryptocell-310
Debug	on-chip	ARMv7 instrumentation trace macrocell1	arm,armv7m-itm
Display	on-board	Sharp LS0XX memory display controller1	sharp,ls0xx
Flash controller	on-chip	Nordic NVMC (Non-Volatile Memory Controller)1	nordic,nrf52-flash-controller
	on-chip	Properties defining the interface for the Nordic QSPI peripheral1	nordic,nrf-qspi
GPIO & Headers	on-chip	NRF5 GPIOTE1	nordic,nrf-gpiote
	on-chip	NRF5 GPIO2	nordic,nrf-gpio
I2C	on-chip	Nordic nRF family TWIM (TWI master with EasyDMA)2	nordic,nrf-twim
I2S	on-chip	Nordic I2S (Inter-IC sound interface)1	nordic,nrf-i2s
IEEE 802.15.4	on-chip	Nordic nRF IEEE 802.15.4 node1	nordic,nrf-ieee802154
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv7-M NVIC (Nested Vectored Interrupt Controller)1	arm,v7m-nvic
Multi-Function Device	on-board	Nordic nPM13001	nordic,npm1300
Miscellaneous	on-chip	Nordic FICR (Factory Information Configuration Registers)1	nordic,nrf-ficr
	on-chip	Nordic nRF family PPI (Programmable Peripheral Interconnect)1	nordic,nrf-ppi
MTD	on-chip	Flash node1	soc-nv-flash
	on-chip	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
	on-board	QSPI NOR flash supporting the JEDEC CFI interface1	nordic,qspi-nor
Networking	on-chip	Nordic nRF family RADIO peripheral1	nordic,nrf-radio
	on-chip	Nordic nRF family NFCT (Near Field Communication Tag)1	nordic,nrf-nfct
Pin control	on-chip	Nordic nRF family Pin Controller1	nordic,nrf-pinctrl
Power management	on-chip	Nordic nRF power control node1	nordic,nrf-power
PWM	on-chip	nRF PWM1 3	nordic,nrf-pwm
	on-chip	nRFx S/W PWM1	nordic,nrf-sw-pwm
Regulator	on-chip	Nordic nRF5X regulator (fixed stage of the core supply)1	nordic,nrf5x-regulator
	on-chip	Nordic nRF52X regulator (high voltage stage of the main supply)1	nordic,nrf52x-regulator-hv
	on-board	Nordic nPM1300 PMIC1	nordic,npm1300-regulator
Retained memory	on-chip	Nordic GPREGRET (General Purpose Register Retention) device2	nordic,nrf-gpregret
RNG	on-chip	Nordic nRF family RNG (Random Number Generator)1	nordic,nrf-rng
RTC	on-chip	Nordic nRF RTC (Real-Time Counter)3	nordic,nrf-rtc
Sensors	on-board	NPM1300 PMIC Charger1	nordic,npm1300-charger
	on-board	MMC56X3 3-axis magnetic and temperature sensor1	memsic,mmc56x3
	on-board	Texas Instruments OPT3001 ambient light sensor1	ti,opt3001
	on-board	STMicroelectronics LSM6DSO 6-axis IMU (Inertial Measurement Unit) sensor accessed through SPI bus1	st,lsm6dso
	on-board	Bosch BMP390 pressure sensor accessed through I2C bus1	bosch,bmp390
	on-chip	Nordic nRF family TEMP node1	nordic,nrf-temp
	on-chip	Nordic nRF quadrature decoder (QDEC) node1	nordic,nrf-qdec
Serial controller	on-chip	Nordic nRF family UARTE (UART with EasyDMA)1 1	nordic,nrf-uarte
SPI	on-chip	Nordic nRF family SPIM (SPI master with EasyDMA)1 3	nordic,nrf-spim
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv7-M System Tick1	arm,armv7m-systick
USB	on-chip	Nordic nRF52 USB device controller1	nordic,nrf-usbd
Watchdog	on-chip	Nordic nRF family WDT (Watchdog Timer)1	nordic,nrf-wdt

Programming and Debugging

The p2d board supports the runners and associated west commands listed below.

	flash	debug	rtt	attach	debugserver
jlink	✅	✅ (default)	✅	✅	✅
nrfjprog	✅
nrfutil	✅ (default)
openocd	✅	✅	✅	✅	✅
pyocd	✅	✅	✅	✅	✅

References

[1]

https://repebble.com/