The example can either be its own Wi-Fi access point, or we can assign it to our existing network. The goal of the web example is to create a web server and host a simple HTML page that we can use to control the status of the onboard LED. The onboard ESP32 is an incredibly powerful microcontroller in its own right, but acting as a co-processor it offloads all of the networking that would slow down the 48 MHz Arm CPU. For the R4 WiFi, we chose to use an example that uses the ESP32’s Wi-Fi connectivity along with the R4’s Arm CPU. Flashing the code took under 30 seconds and all was good. Starting with the Minima, we updated the standard Blink sketch to use a for loop that would blink the LED a few times before stopping, then repeating. After that we ventured into File > Examples and selected a series of example sketches for the boards. It even downloaded the latest drivers and configuration for the new boards.
Installing the Arduino IDE and connecting the Arduino Uno R4 boards to the computer, and we see the IDE detect and configure the boards for use.
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