Book Image

Developing IoT Projects with ESP32

By : Vedat Ozan Oner
Book Image

Developing IoT Projects with ESP32

By: Vedat Ozan Oner

Overview of this book

Developing IoT Projects with ESP32 provides end-to-end coverage of secure data communication techniques from sensors to cloud platforms that will help you to develop production-grade IoT solutions by using the ESP32 SoC. You'll learn how to employ ESP32 in your IoT projects by interfacing with different sensors and actuators using different types of serial protocols. This book will show you how some projects require immediate output for end-users, and cover different display technologies as well as examples of driving different types of displays. The book features a dedicated chapter on cybersecurity packed with hands-on examples. As you progress, you'll get to grips with BLE technologies and BLE mesh networking and work on a complete smart home project where all nodes communicate over a BLE mesh. Later chapters will show you how IoT requires cloud connectivity most of the time and remote access to smart devices. You'll also see how cloud platforms and third-party integrations enable endless possibilities for your end-users, such as insights with big data analytics and predictive maintenance to minimize costs. By the end of this book, you'll have developed the skills you need to start using ESP32 in your next wireless IoT project and meet the project's requirements by building effective, efficient, and secure solutions.
Table of Contents (18 chapters)
1
Section 1: Using ESP32
7
Section 2: Local Network Communication
12
Section 3: Cloud Communication

Developing with lwIP

lightweight IP (lwIP) is an open source TCP/IP stack for embedded systems and ESP-IDF has imported it into the framework. The idea behind lwIP is to create a small-footprint TCP/IP protocol suite that resource-constrained embedded systems can use to connect to IP-based networks and leverage the services in a network. lwIP is one of the most popular TCP/IP stacks targeting embedded systems on the market.

Basically, the ESP-IDF port supports the following APIs of lwIP:

  • Berkeley Software Distribution (BSD) sockets API for TCP and UDP connections
  • Dynamic Host Configuration Protocol (DHCP) for dynamic IP addressing
  • Simple Network Time Protocol (SNTP) as a time protocol
  • Multicast Domain Name System (mDNS) for host name resolution and service information
  • Internet Control Message Protocol (ICMP) for network monitoring and diagnostics

Actually, we have already used some of these behind the scenes in our previous examples. In the STA mode...