This book looks at using the ESP32's WiFi for IoT projects in which data needs to be shared. Mike James and Harry Fairhead start out with an examination of using FreeRTOS beyond the simple single-task program: using cores, scheduling, locks, synchronization and interrupts. There are chapters covering the different data structures that FreeRTOS provides for inter-task communication, and basic WiFi in station mode. 

<ASIN:1871962994 >

The use of lwIP to implement TCP/IP and DHCP, sockets for implementing network communications, and the HTTP client component provided by the IDF are also covered, along with how to implement a server and the methods that can be used to make a client stand in for a server. Later chapters cover practical cryptography, encryption suites and certificates, UDP, SNTP, SMTP and MQTT in turn. The final chapter deals with some advanced topics: an AP that can be used to configure hardware; an AP that can connect its clients to the Internet; promiscuous mode packet sniffing; long range mode; ESP Now and ESP Mesh.

Author: Harry Fairhead and Mike James
Publisher: I/O Press
Date: December 2025
Pages: 286
ISBN: 978-1871962994
Print: 1871962994
Kindle: B0G5M76KLB
Audience: Developers using the ESP32
Level: Intermediate/Advanced
Category: Hardware platforms and C/C++

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