Published April 9, 2021 © MIT

How to add W5500 Ethernet to Raspberry Pi Pico (Python) - 1

HOWTO: Raspberry Pi Pico + WIZnet W5500 Ethernet + CircuitPython - Manual IP setting & Ping Demo

BeginnerProtip1 hour20,931

How to add W5500 Ethernet to Raspberry Pi Pico (Python) - 1

Things used in this project

Hardware components

Raspberry Pi Pico

Adafruit Ethernet FeatherWing

WIZnet W5500

Story

1. Circuit Python install first!

Reason: lots of examples with W5500

https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/micropython-or-circuitpython

CircuitPython has a lot of examples and support!There are 260+ libraries for the standard CircuitPython API. Most of these will already work. Listed here

1. Download the below uf2 file link on your computer

CircuitPython 6.2.0 - adafruit-circuitpython-raspberry_pi_pico-en_US-6.2.0.uf2

2. Push and hold the BOOTSEL button and plug your Pico into the USB port of your Raspberry Pi or other computer. Release the BOOTSEL button after your Pico is connected.
3. It will mount as a Mass Storage Device called RPI-RP2.
4. Drag and drop the CircuitPython 6.2.0 UF2 file onto the RPI-RP2 volume. Your Pico will reboot. You are now running CircuitPython.

https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/circuitpython

if you want, you can install MU editor to make your python code. But I think, it's not necessary. Just use your Python IDE such as Notepad, VSCode, ...

Then, you can see "CIRCUITPY" drive on your system.

circuitpy code.py

Now, we're ready to enjoy the code on python code.py with CircuitPython!!

Once you edit and save your code on code.py, run your code on the board.

Let's test "LED on" and "LED off" code.

actually, just visit the below page to blink led on your rpi pico board.

https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/blinky-and-a-button

2. Pin connect to W5500, WIZ850io

use SPI1 on rpi pi board.

1 / 2

SPI1_SCK => WIZ850io SCLK
SPI1_TX => WIZ850io MOSI
SPI1_RX => WIZ850io MISO
SPI1_CSn => WIZ850io SCNn
GP15 => WIZ850io RSTn

, and 3.3V, GND as well.

for your reference,

Pico connect to WIZ850io

3. W5500 Reset Test

Copy below RESET_test code to code.py file on your rpi pico board.

https://github.com/bjnhur/pico-W5500/blob/main/W5500_Reset_Test.py

Every 6 second, RESET pin control => See the link on & off

1 / 2 • Link ON

4. W5500 adafruit_wiznet5k python library

Before, ping test we prepare some libraries from Adafruit learning page.

https://learn.adafruit.com/ethernet-for-circuitpython/circuitpython-setup

Before continuing, make sure your board's lib folder has at least the following files and folders copied over:
adafruit_wiznet5k
adafruit_bus_device
adafruit_requests.mpy

(Added 04-21, 2021) I put the latest files and folders on my github repo. download files from here.

https://github.com/bjnhur/pico-W5500/tree/main/lib

For adafruit_wiznet5k, I forked & modified some code for DHCP operation. please visit & download code from

https://github.com/bjnhur/Adafruit_CircuitPython_Wiznet5k
Adafruit original lib - https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k

OR, original files can be download as belows.

Find and copy adafruit_bus_device & adafruit_requests.mpy file from Adafruit's CircuitPython library bundle matching your version of CircuitPython. Don't copy all files and folder in the library.

Download adafruit-circuitpython-bundle-6.x-mpy-20210409.zip
unzip and find adafruit_requests.mpy.

file location of adafruit_requests.mpy

For adafruit_bus_device, download from below link.

https://github.com/adafruit/Adafruit_CircuitPython_BusDevice

Last, you copy the files on the lib director of CIRCUITPY drive.

prepare library for W5500 python code

5. W5500 PING Test

(UPDATED 04/12/2021) DHCP OK. refer from my repo. ~~I tried DHCP mode, but failed.~~

so first I'm trying to ping with manual IP setting

For this example, please visit the link.

I changed some information as my network env.

please refer my code.

https://github.com/bjnhur/pico-W5500/blob/main/Pico_W5500_Ping_Test.py

just copy the content to code.py on your RPi Pico and save!! Done!!

PING test on my laptop. Result is :)

ping success!

6. REPL, Open serial terminal for printf()

I found the material for REPL, terminam open from Adafruit page.

Now you need to open PuTTY.
Under Connection type: choose the button next to Serial.
In the box under Serial line, enter the serial port you found that your board is using.
In the box under Speed, enter 115200.

putty serial configuration

Once your settings are entered, you're ready to connect to the serial console. Click "Open" at the bottom of the window. A new window will open.

To see your COM port number, please open "Device Manager" on your Windows.

window device manager

COM Port

see the terminal screen as follows.

REPL screen

7. WebClient Demo

please visit next project story.

https://www.hackster.io/bjnhur/how-to-add-w5500-ethernet-to-raspberry-pi-pico-python-2-77c78c

Resource

All code, you can find the below repo.

https://github.com/bjnhur/pico-W5500

Next - to try more interesting project~~~ soon.

Code

import board
import busio
import digitalio
import time
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K

SPI1_SCK = board.GP10
SPI1_TX = board.GP11
SPI1_RX = board.GP12
SPI1_CSn = board.GP13
W5500_RSTn = board.GP15

print("Wiznet5k Ping Test (no DHCP)")

# Setup your network configuration below
# random MAC, later should change this value on your vendor ID
MY_MAC = (0x00, 0x01, 0x02, 0x03, 0x04, 0x05)
IP_ADDRESS = (192, 168, 0, 111)
SUBNET_MASK = (255, 255, 0, 0)
GATEWAY_ADDRESS = (192, 168, 0, 1)
DNS_SERVER = (8, 8, 8, 8)

led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT

ethernetRst = digitalio.DigitalInOut(W5500_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT

# For Adafruit Ethernet FeatherWing
cs = digitalio.DigitalInOut(SPI1_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
spi_bus = busio.SPI(SPI1_SCK, MOSI=SPI1_TX, MISO=SPI1_RX)

# Reset W5500 first
ethernetRst.value = False
time.sleep(1)
ethernetRst.value = True

# Initialize ethernet interface with DHCP
# eth = WIZNET5K(spi_bus, cs)
# Initialize ethernet interface without DHCP
eth = WIZNET5K(spi_bus, cs, is_dhcp=False, mac=MY_MAC)

# Set network configuration
eth.ifconfig = (IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)

print("Chip Version:", eth.chip)
print("MAC Address:", [hex(i) for i in eth.mac_address])
print("My IP address is:", eth.pretty_ip(eth.ip_address))

while True:
    led.value = not led.value
    time.sleep(1)

print("Done!")

"""Example for Pico. Turns on the built-in LED."""
import time
import board
import digitalio

W5500_RSTn = board.GP15

# led = digitalio.DigitalInOut(board.LED)
led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT

ethernetRst = digitalio.DigitalInOut(W5500_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT

while True:
    led.value = not led.value
    ethernetRst.value = False
    time.sleep(1)
    ethernetRst.value = True
    time.sleep(5)

Credits

Bongjun Hur

7 projects • 17 followers

How to add W5500 Ethernet to Raspberry Pi Pico (Python) - 1

Things used in this project

Hardware components

Story

1. Circuit Python install first!

2. Pin connect to W5500, WIZ850io

3. W5500 Reset Test

4. W5500 adafruit_wiznet5k python library

5. W5500 PING Test

6. REPL, Open serial terminal for printf()

7. WebClient Demo

Resource

Schematics

Pico_WIZ850io

Pico_Wiz850io

Code

Pico_W5500_Ping_Test

LED off

LED on

W5500_RESET_Test

Credits

Bongjun Hur

Comments

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How to add W5500 Ethernet to Raspberry Pi Pico (Python) - 1

How to add W5500 Ethernet to Raspberry Pi Pico (Python) - 1

Things used in this project

Hardware components

Story

1. Circuit Python install first!

2. Pin connect to W5500, WIZ850io

3. W5500 Reset Test

4. W5500 adafruit_wiznet5k python library

5. W5500 PING Test

6. REPL, Open serial terminal for printf()

7. WebClient Demo

Resource

Schematics

Pico_WIZ850io

Pico_Wiz850io

Code

Pico_W5500_Ping_Test

LED off

LED on

W5500_RESET_Test

Credits

Bongjun Hur

Comments

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