WIZnet Ethernet HAT[RP2040] + SNTP

The Wiznet Ethernet module accesses the NTP server and obtains time information.

WIZnet Ethernet HAT (Hardware Attached on Top) is a Raspberry Pi Pico pin-compatible board that utilizes W5100S and supports both 3.3V & 5V.

Please refer to this link to find more information about W5100S.

• Raspberry Pi Pico Pin-Compatible
• Ethernet (W5100S Hardwired TCP/IP CHIP)
• Product page : https://docs.wiznet.io/Product/iEthernet/W5100S/overview
• Support 4 Independent Hardware SOCKETs simultaneously
• Support SOCKET-less new Command: ARP-Request, PING-Request
• Support Auto-MDIX only when Auto-Negotiation mode

Prepare Hardware

1. Combine WIZnet Ethernet HAT with Raspberry Pi Pico.

2. Connect ethernet cable to Ethernet HAT ethernet port.

3. Connect Raspberry Pi Pico to desktop or laptop using 5 pin micro USB cable.

- If you use W5100S-EVB-Pico, you can skip '1. Combine...'

Prepare Software

1. Installing CircuitPython

Install CircuitPython on Raspberry Pi Pico by referring to the link above.

https://learn.adafruit.com/getting-started-with-ra...

Download the below uf2 file link on your computerCircuitPython 7.0.0 -

https://downloads.circuitpython.org/bin/raspberry_...

2.Setup WIZnet Ethernet Library

Copy the WIZnet library Into the lib folder inside the Raspberry Pi Pico

https://learn.adafruit.com/ethernet-for-circuitpyt...

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

https://github.com/Wiznet/RP2040-HAT-CircuitPython

adafruit_bus_device
adafruit_wiznet5k

The following serial terminal program is required for DNS test, download and install from below links.

✔Tera Term

Before this, you should find the Raspberry Pi Pico COM port number from "Device Manager" on your PC.

Setup SNTP Example

- download https://github.com/Wiznet/RP2040-HAT-CircuitPytho...

Press "Ctrl+D" on the terminal window. you can see the messages as follows.

Access the domain URL of the server and convert it to an IP address. Also, get the time information value and print it out.