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
RP2040 Datasheet - https://www.raspberrypi.org/documentation/microcontrollers/raspberry-pi-pico.html
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-raspberry-pi-pico-circuitpython/circuitpython
- Download the below uf2 file link on your computer
CircuitPython 7.0.0 - https://downloads.circuitpython.org/bin/raspberry_pi_pico/en_US/adafruit-circuitpython-raspberry_pi_pico-en_US-7.0.0.uf2
2. Setup WIZnet Ethernet Library
Copy the WIZnet library Into the lib folder inside the Raspberry Pi Pico. 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: https://github.com/Wiznet/RP2040-HAT-CircuitPython
adafruit_bus_device
adafruit_wiznet5k
1. Install Programs
The following serial terminal program is required for SNTP test, download and install from below links.
Teraterm
is a terminal console program and is an interface that helps PCs and users communicate. The main purpose is to be used for serial communication purposes.
Before this, you should find the Raspberry Pi Pico COM port number from "Device Manager" on your PC.
2. How to SNTP Example
Access the WIZnet github, get the Circuit Python source, and copy it to code.py inside the pico.
Setup SNTP Example - download https://github.com/Wiznet/RP2040-HAT-CircuitPython/tree/master/examples/SNTP
- Copy all code from download W5x00_SNTP.py file or below code section.
- Paste code into code.py on your Raspberry Pi Pico and Save it.
- Press "Ctrl+D" on the terminal window. you can see the messages as follows. Conversely, pressing "Ctrl+C" causes the running source to stop.
- Access the domain URL of the server and convert it to an IP address. Also, get the time information value and print it out.
Comments