Using Wi-Fi Communication for Connectivity

Wi-Fi (of the IEEE 802.11 family of standards) is the most prominent wireless standard in the industry, so Espressif has integrated this technology into all of its products except the ESP32-H2 series SoC, which combines IEEE 802.15.4 and Bluetooth LE wireless connectivity on the same hardware. In this chapter, we will learn how to develop applications in Wi-Fi environments. After connecting to a local Wi-Fi network, the huge world of IoT opens, which allows ESP32 to communicate with servers and other connected devices. ESP-IDF provides all the software support needed to develop Transmission Control Protocol/Internet Protocol (TCP/IP) applications.

This chapter contains practical examples of Wi-Fi connectivity basics as well as popular IoT protocols over TCP/IP, such as Message Queue Telemetry Transport (MQTT) and Representational State Transfer (REST) services. In the Further reading section, you can find more resources to learn about...