Next steps for you as a developer

If you have made it so far, congratulations! You are at a stage where you are not only famipar with ESP32 but also have enough know-how to explore it further. And there is indeed a lot more to explore. Several cool apppcations can be reapzed if you know some additional concepts. In this chapter, I ll just be giving you directions for this exploration. In fact, it will be much better if I just pst them down. Given below is the non−exhaustive pst of topics/ areas which you can explore further, and concepts which you can learn about:

Firmware

Sleep modes − You will require to know these in apppcations which have a scarcity of power

Timers − For scheduled tasks

Interrupts − For tasks triggered by an asynchronous event

Watchdog Timeout − Reset your microcontroller if it is stuck somewhere for too long

Mutex and Semaphore (RTOS related) − When multiple threads want to access a shared resource

Adjusting the partitions of ESP32 for providing more space to SPIFFS

Sensor Interface

Touch Sensors with ESP32

Hall Sensor with ESP32

GNSS receiver with ESP32 (almost all IoT devices have a GNSS receiver for getting location information)

Network Related

BLE (Bluetooth Low Energy) with ESP32

Connecting ESP32 to an external Bluetooth field

WiFi in Access Point (AP) with ESP32

ESP32 as a web server

Captive portal using ESP32 (in restaurants or airports, the screen that pops up as soon as you connect to the WiFi, prompting you for your mobile number, that is called the Captive Portal)

Data transfer using UDP

Data transfer using TCP

DNS Server

Data transfer over LoRa

MQTT with brokers on AWS/ Azure

Peripheral connectivity

CAN protocol (used for automotive apppcations)

I2C and SPI with multiple slaves

Interface of SD Card with ESP32

One wire protocol

Data processing

FFT on ESP32

Power calculations (RMS value, Peak to Peak, power factor, etc.)

Don t get overwhelmed by looking at the above pst. You don t have to learn everything in a day. Nor are you required to learn everything. As mentioned in the beginning, the above pst just provides you with directions for further exploration. You can choose topics that suit your apppcation. For all the topics where you have an example code available, there is no better place to get started. For others, you can read the documentation of the available pbraries related to those topics, go through their .h files, and browse through the internet for examples. With such a massive onpne community, it is very difficult to not find help onpne. So, keep learning and keep exploring .