How to use OpenAI API with WizFi360-EVB-Pico in Arduino

This document will guide through a series of steps from configuring development environment to running WizFi360 Arduino library & DALL-Ebasic example using OpenAI API with the WIZnet's Wi-Fi product - WizFi360-EVB-Pico.

I will use 'WizFi360_arduino_library' provided by WIZnet.

• WizFi360_arduino_library

And for the DALL-E basic example using OpenAI API, the example below was used.

• WizFi360_arduino_library/examples/OpenAIDallEBasic

1. Development environment Preparation

To test the WizFi360 Arduino library & DALL-E basic example using OpenAI API, the development environment must be configured to use Arduino platform.

Please note that in this guide DALL-E basic example using OpenAI API was configured and tested using Arduino IDE in Windows environment.

Before starting, download and install the Arduino IDE from the link below.

• Arduino IDE

Additionally, if you are using WizFi360-EVB-Pico, minor settings are required in the Arduino IDE.

WizFi360-EVB-Pico is an development board based on RP2040, and you need to add a package to use the development board based on RP2040.

① Run the Arduino IDE

② Open Preferences

You can open it through 'File → Preferences' in the menu bar of Arduino IDE.

③ Add next link to Additional Boards Manager URLs

https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json

④ Open Boards Manager...

Open it via 'Tool → Board: "" → Boards Manager...'

⑤ Install board support package

Search and install Earle F. Philhower's Raspberry Pico/RP2040 board support package.

2. H/W Preparation

WizFi360-EVB-Pico is a development board that is built on high-performance, low-price MCU RP2040 and adds Wi-Fi connectivity using WizFi360.

More details can be found at below link:

• WizFi360-EVB-Pico

WizFi360-EVB-Pico is pin compatible to Raspberry Pi Pico. But keep in mind that pins GPIO4 ~ GPIO7 / GPIO20 are used for UART communication / reset between RP2040 and WizFi360.

Follow the steps below to firmware upload and run.

① Connect WizFi360-EVB-Pico to desktop or laptop using 5 pin micro USB cable.

3. S/W Preparation

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

• Tera Term

4. Example Settings

This section will guide through testing the DALL-E basic example using OpenAI API with WizFi360-EVB-Pico.

① Setup Sketchbook location

Setup the Sketchbook location according to the location of the downloaded 'WizFi360_arduino_library'.

② Open example

You can open examples through 'File → Examples → WizFi360'.

③ Select device

Select WizFi360-EVB-Pico.

④ Select COM port

Select the COM port of WizFi360-EVB-Pico.

⑤ Setup device setting according to device you use

Serial port configuration is different depending on the device used.

• Arduino Mega 2560 : ARDUINO_MEGA_2560
• WizFi360-EVB-Pico : WIZFI360_EVB_PICO

// setup according to the device you use
#define WIZFI360_EVB_PICO

⑥ Setup Wi-Fi configuration

/* Wi-Fi info */
char ssid[] = "wiznet";       // your network SSID (name)
char pass[] = "0123456789";   // your network password

⑦ Setup OpenAI API key

client.println("Authorization: Bearer sk-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"); // your OpenAI API key

5. Example Build & Upload

① After completing the configuration, click Verify button.

② When the build is completed, click Upload button to upload the firmware to the WizFi360-EVB-Pico.

6. Running Example

① Connect to the serial COM port of WizFi360-EVB-Pico with Tera Term.

② If the example works normally on WizFi360-EVB-Pico, you can see the Wi-Fi connection log and result using DALL-E service using OpenAI API key as below.

③ If you access the URL, you can see the image created using DALL-E service as below.