Connecting WIZnet W55RP20-S2E to Adafruit IO for IoT Applications

The W55RP20-S2E is a product from WIZnet, with Serial to Ethernet firmware pre-programmed onto the W55RP20 chip.
Refer to the guide document in the link below on how to write the W55RP20-S2E firmware to the W55RP20 Chip or W55RP20-EVB-Pico.

https://docs.wiznet.io/Product/ioNIC/W55RP20/W55RP20-S2E/w55rp20-evb-pico-s2e

This guide explains how to connect to Adafruit IO using the W55RP20-S2E in MQTT mode.

1. Refer to the link below to access Adafruit IO, create an account, and check the keys.
   https://io.adafruit.com/api/docs/#authentication
   
    
2. Setting Up W55RP20-S2E Using the Configuration Tool
   Download and set up the Configuration Tool using the link below.
   https://github.com/Wiznet/WIZnet-S2E-Tool-GUI/releases
   
   
   
   
   
   
   
   MQTT Config example
   
   
    
3. Checking Connection via Logs
   The W55RP20-S2E provides UART logs through GPIO 0 with a baud rate of 921600.
   
    
4. Sending Data and Checking It on the Dashboard
   The Data UART uses GPIO 4 (TX) and GPIO 5 (RX).
   
   
   You can check the sent data in Adafruit IO's Feeds.