Beetle RP2350

Board Overview

Beetle RP2350

Name:

beetle_rp2350

Vendor:

DFRobot

Architecture:

riscv, arm

SoC:

rp2350a

Browse board sources

Overview

The DFRobot Beetle RP2350 [1] board is based on the RP2350A microcontroller from Raspberry Pi Ltd. The board has two 8-pin headers and a USB type C connector.

Hardware

• Microcontroller Raspberry Pi RP2350A, with a max frequency of 150 MHz

• Dual ARM Cortex M33 cores, and dual RISC-V Hazard3 cores.

• 520 kByte SRAM

• 2 Mbyte QSPI flash

• 9 GPIO pins

• 2 ADC pins

• I2C

• UART

• SPI

• USB type C connector

• Lithium battery charger

• Reset and boot buttons

• User LED

Default Zephyr Peripheral Mapping

Description	Pin	Comments
User LED	GPIO25	Alias led0

GPIO header:

Label	Pin	Default pin mux
0	GPIO0	UART0 TX
1	GPIO1	UART0 RX
4	GPIO4	I2C0 SDA
5	GPIO5	I2C0 SCL
8	GPIO8
9	GPIO9
16	GPIO16	SPI0 MISO
18	GPIO18	SPI0 SCK
19	GPIO19	SPI0 MOSI
26	GPIO26	ADC0
27	GPIO27	ADC1

See also pinout [2] and schematic [3].

Supported Features

The beetle_rp2350 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.

beetle_rp2350/rp2350a/hazard3 target

Type	Location	Description	Compatible
ADC	on-chip	Raspberry Pi Pico ADC1	raspberrypi,pico-adc
Clock control	on-chip	The representation of Raspberry Pi Pico’s clock112	raspberrypi,pico-clock
	on-chip	The representation of Raspberry Pi Pico’s PLL2	raspberrypi,pico-pll
	on-chip	The representation of Raspberry Pi Pico ring oscillator1	raspberrypi,pico-rosc
	on-chip	The representation of Raspberry Pi Pico external oscillator1	raspberrypi,pico-xosc
	on-chip	Raspberry Pi Pico clock controller node1	raspberrypi,pico-clock-controller
Counter	on-chip	Raspberry Pi Pico timer11	raspberrypi,pico-timer
Cryptographic accelerator	on-chip	Raspberry Pi Pico SHA-256 accelerator1	raspberrypi,pico-sha256
DMA	on-chip	Raspberry Pi Pico DMA1	raspberrypi,pico-dma
Flash controller	on-chip	Raspberry Pi Pico flash controller1	raspberrypi,pico-flash-controller
GPIO & Headers	on-chip	Raspberry Pi Pico GPIO1	raspberrypi,pico-gpio
	on-chip	Raspberry Pi Pico GPIO Port11	raspberrypi,pico-gpio-port
I2C	on-chip	Raspberry Pi Pico I2C11	raspberrypi,pico-i2c
Interrupt controller	on-chip	Hazard3 interrupt controller1	hazard3,hazard3-intc
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
Miscellaneous	on-chip	Raspberry Pi Pico PIO3	raspberrypi,pico-pio
MTD	on-chip	Flash node1	soc-nv-flash
Pin control	on-chip	Raspberry Pi Pico Pin Controller1	raspberrypi,pico-pinctrl
PWM	on-chip	Raspberry Pi Pico PWM1	raspberrypi,pico-pwm
Reset controller	on-chip	Raspberry Pi Pico Reset Controller1	raspberrypi,pico-reset
RNG	on-chip	Raspberry Pi Pico RNG/Entropy1	raspberrypi,pico-rng
Sensors	on-chip	Raspberry Pi Pico family temperature sensor node1	raspberrypi,pico-temp
Serial controller	on-chip	Raspberry Pi Pico UART11	raspberrypi,pico-uart
SPI	on-chip	Raspberry Pi Pico SPI11	raspberrypi,pico-spi
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	RISC-V Machine Timer1	riscv,machine-timer
USB	on-chip	Raspberry Pi Pico USB Device Controller1	raspberrypi,pico-usbd
Watchdog	on-chip	Raspberry Pi Pico Watchdog1	raspberrypi,pico-watchdog

beetle_rp2350/rp2350a/m33 target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU2	arm,cortex-m33
ADC	on-chip	Raspberry Pi Pico ADC1	raspberrypi,pico-adc
Clock control	on-chip	The representation of Raspberry Pi Pico’s clock112	raspberrypi,pico-clock
	on-chip	The representation of Raspberry Pi Pico’s PLL2	raspberrypi,pico-pll
	on-chip	The representation of Raspberry Pi Pico ring oscillator1	raspberrypi,pico-rosc
	on-chip	The representation of Raspberry Pi Pico external oscillator1	raspberrypi,pico-xosc
	on-chip	Raspberry Pi Pico clock controller node1	raspberrypi,pico-clock-controller
Counter	on-chip	Raspberry Pi Pico timer11	raspberrypi,pico-timer
Cryptographic accelerator	on-chip	Raspberry Pi Pico SHA-256 accelerator1	raspberrypi,pico-sha256
DMA	on-chip	Raspberry Pi Pico DMA1	raspberrypi,pico-dma
Flash controller	on-chip	Raspberry Pi Pico flash controller1	raspberrypi,pico-flash-controller
GPIO & Headers	on-chip	Raspberry Pi Pico GPIO1	raspberrypi,pico-gpio
	on-chip	Raspberry Pi Pico GPIO Port11	raspberrypi,pico-gpio-port
I2C	on-chip	Raspberry Pi Pico I2C11	raspberrypi,pico-i2c
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	arm,v8m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
Miscellaneous	on-chip	Raspberry Pi Pico PIO3	raspberrypi,pico-pio
MTD	on-chip	Flash node1	soc-nv-flash
Pin control	on-chip	Raspberry Pi Pico Pin Controller1	raspberrypi,pico-pinctrl
PWM	on-chip	Raspberry Pi Pico PWM1	raspberrypi,pico-pwm
Reset controller	on-chip	Raspberry Pi Pico Reset Controller1	raspberrypi,pico-reset
RNG	on-chip	Raspberry Pi Pico RNG/Entropy1	raspberrypi,pico-rng
Sensors	on-chip	Raspberry Pi Pico family temperature sensor node1	raspberrypi,pico-temp
Serial controller	on-chip	Raspberry Pi Pico UART11	raspberrypi,pico-uart
SPI	on-chip	Raspberry Pi Pico SPI11	raspberrypi,pico-spi
SRAM	on-chip	Generic on-chip SRAM1	mmio-sram
Timer	on-chip	ARMv8-M System Tick1	arm,armv8m-systick
USB	on-chip	Raspberry Pi Pico USB Device Controller1	raspberrypi,pico-usbd
Watchdog	on-chip	Raspberry Pi Pico Watchdog1	raspberrypi,pico-watchdog

Programming and Debugging

The beetle_rp2350 board supports the runners and associated west commands listed below.

	flash	debug	debugserver	rtt	attach
jlink	✅	✅	✅	✅	✅
openocd	✅	✅ (default)	✅	✅	✅
probe-rs	✅	✅	✅		✅
uf2	✅ (default)

By default programming is done via the USB connector. Press and hold the BOOT button, and then press the RST button, and the device will appear as a USB mass storage unit. Building your application will result in a build/zephyr/zephyr.uf2 file. Drag and drop the file to the USB mass storage unit, and the board will be reprogrammed.

It is also possible to program and debug the board via the SWDIO and SWCLK pins in the DEBUG connector. You must solder a 3-pin or 4-pin header to the back of the board in order to use this feature. A separate programming hardware tool is required, and for example the openocd software is used. You might need to use Raspberry Pi’s forked version of OpenOCD. Typically the OPENOCD and OPENOCD_DEFAULT_PATH values should be set when building, and the --runner openocd argument should be used when flashing. For more details on programming RP2040-based and RP2350-based boards, see Programming and Debugging.

Flashing the M33 core

To run the Blinky sample:

# From the root of the zephyr repository
west build -b beetle_rp2350/rp2350a/m33 samples/basic/blinky/
west flash

Try also the Hello World and Analog-to-Digital Converter (ADC) with devicetree samples.

Use the shell to control the GPIO pins:

# From the root of the zephyr repository
west build -b beetle_rp2350/rp2350a/m33 samples/sensor/sensor_shell -- -DCONFIG_GPIO=y -DCONFIG_GPIO_SHELL=y
west flash

To set one of the GPIO pins high, use these commands in the shell:

gpio conf gpio0 8 o
gpio set gpio0 8 1

Flashing the Hazard3 core

The RP2350A microcontroller has two ARM M33 cores and two RISC-V Hazard3 cores. To flash one of the Hazard3 cores, use the board argument beetle_rp2350/rp2350a/hazard3. The sample Blinky has been verified for this core. Use the USB mass storage programming method described above.

References

[1]

https://www.dfrobot.com/product-2913.html

[2]

https://wiki.dfrobot.com/SKU_DFR1188_Beetle_RP2350#target_4

[3]

https://dfimg.dfrobot.com/5d57611a3416442fa39bffca/wiki/f18e5f3a683e6d8a9c8582ac6f89b023.pdf