W55RP20-EVB-Pico

Overview

W55RP20-EVB-Pico is a microcontroller evaluation board based on the W55RP20, a SiP device that combines a Raspberry Pi RP2040 microcontroller and a fully hardwired TCP/IP controller W5500. It basically works the same as a Raspberry Pi Pico board, with additional Ethernet provided by the integrated W5500. The USB bootloader allows the ability to flash without any adapter, in a drag-and-drop manner. It is also possible to flash and debug the boards with their SWD interface, using an external adapter.

Hardware

Dual core Arm Cortex-M0+ processor running up to 133MHz
264KB on-chip SRAM
2MB on-board flash
22 GPIO pins
4 Analog inputs
2 UART peripherals
2 SPI controllers
2 I2C controllers
16 PWM channels
USB 1.1 controller (host/device)
8 Programmable I/O (PIO) for custom peripherals
On-board LED
1 Watchdog timer peripheral
Wiznet W5500 Ethernet MAC/PHY

Supported Features

The w55rp20_evb_pico 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.

`w55rp20_evb_pico/rp2040` target

On-target memory for this board target: 264 KiB of RAM, 2 MiB of Flash.

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M0+ CPU2	`arm,cortex-m0+`
ADC	on-chip	Raspberry Pi Pico ADC1	`raspberrypi,pico-adc`
Clock control	on-chip	Raspberry Pi Pico clock controller node1	`raspberrypi,pico-clock-controller`
	on-chip	The representation of Raspberry Pi Pico’s clock11 2	`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`
Counter	on-chip	Raspberry Pi Pico timer1	`raspberrypi,pico-timer`
DMA	on-chip	Raspberry Pi Pico DMA1	`raspberrypi,pico-dma`
Ethernet	on-board	W5500 standalone 10/100BASE-T Ethernet controller with SPI interface1	`wiznet,w5500`
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 Port1	`raspberrypi,pico-gpio-port`
	on-board	GPIO pins exposed on Raspberry Pi Pico headers1	`raspberrypi,pico-header`
I2C	on-chip	Raspberry Pi Pico I2C1 1	`raspberrypi,pico-i2c`
Interrupt controller	on-chip	ARMv6-M NVIC (Nested Vectored Interrupt Controller) controller1	`arm,v6m-nvic`
LED	on-board	Group of GPIO-controlled LEDs1	`gpio-leds`
LED	on-board	Group of PWM-controlled LEDs1	`pwm-leds`
Mailbox	on-chip	Raspberry Pi Pico interprocessor mailbox2	`raspberrypi,pico-mbox`
Miscellaneous	on-chip	Raspberry Pi Pico PIO1 1	`raspberrypi,pico-pio`
Miscellaneous	on-chip	Raspberry Pi Pico SIO1	`raspberrypi,pico-sio`
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`
Regulator	on-chip	Raspberry Pi Pico core supply regurator1	`raspberrypi,core-supply-regulator`
Reset controller	on-chip	Raspberry Pi Pico Reset Controller1	`raspberrypi,pico-reset`
RTC	on-chip	Raspberry Pi Pico RTC1	`raspberrypi,pico-rtc`
Sensors	on-chip	Raspberry Pi Pico family temperature sensor node1	`raspberrypi,pico-temp`
Serial controller	on-chip	Raspberry Pi Pico UART1 1	`raspberrypi,pico-uart`
SPI	on-chip	Raspberry Pi Pico SPI2	`raspberrypi,pico-spi`
SPI	on-board	Raspberry Pi Pico SPI via PIO1	`raspberrypi,pico-spi-pio`
SRAM	on-chip	Generic on-chip SRAM1	`mmio-sram`
Timer	on-chip	ARMv6-M System Tick1	`arm,armv6m-systick`
USB	on-chip	Raspberry Pi Pico USB Device Controller1	`raspberrypi,pico-usbd`
Watchdog	on-chip	Raspberry Pi Pico Watchdog1	`raspberrypi,pico-watchdog`

Pin Mapping

The peripherals of the RP2040 SoC can be routed to various pins on the board. The configuration of these routes can be modified through DTS. Please refer to the datasheet to see the possible routings for each peripheral.

External pin mapping on the W55RP20_EVB_PICO is identical to the Raspberry Pi Pico. However, GPIO17, GPIO20, GPIO21, GPIO22, GPIO23, GPIO24, and GPIO25 are not available on the edge connector due to internal connections on the board. GPIO19 is routed to the on-board LED. The W5500 interface signals are internally connected and are not exposed on the edge connector.

Refer to W55RP20 Evaluation Board Documentation [1] for a board schematic and other certifications.

Default Zephyr Peripheral Mapping:

UART0_TX : P0
UART0_RX : P1
I2C0_SDA : P4
I2C0_SCL : P5
I2C1_SDA : P14
I2C1_SCL : P15
W5500 interface : Internal (not exposed)
ADC_CH0 : P26
ADC_CH1 : P27
ADC_CH2 : P28
ADC_CH3 : P29

Programming and Debugging

The w55rp20_evb_pico board supports the runners and associated west commands listed below.

	flash	debug	debugserver	attach	rtt	reset
blackmagicprobe	✅	✅		✅
jlink	✅	✅	✅	✅	✅	✅
openocd	✅ (default)	✅ (default)	✅	✅	✅
pyocd	✅	✅	✅	✅	✅	✅
uf2	✅

The overall explanation regarding flashing and debugging is the same as or Raspberry Pi Pico. See Programming and Debugging in Raspberry Pi Pico documentation. N.b. OpenOCD support requires using Raspberry Pi’s forked version of OpenOCD.

Below is an example of building and flashing the Blinky application.

# From the root of the zephyr repository
west build -b w55rp20_evb_pico samples/basic/blinky
west flash --openocd /usr/local/bin/openocd