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ESP32-chat-communication-over-wifi

The aim of the project is to build a chat system using two esp32 development boards.

Table of Contents

About The Project

  • Aim of the project is to build a chat system between two ESP32 development boards.
  • The chat system should be fast,secure and easy to use.
  • Communication protocol used is ESP-NOW as
    • It overcomes the drawbacks of traditonal wifi connection.
    • The pairing between devices is needed prior to their communication. After the pairing is done, the connection is secure and peer-to-peer.
    • ESP NOW does not require a router for the connection,Thus this project can be used anywhere,at any remote places.
    • If suddenly one of the boards loses power or resets, when it restarts, it will automatically connect to its peers.

To read more about the project refer this documentation

Tech Stack

File Structure

 .
├── Components              # Contains files of specific library of functions or Hardware used
│    ├──esp_now             # Contains the code to setup connection using ESP-NOW. 
│    ├──CMakeLists.txt      # To include this component in a esp-idf 
├── docs                    # Documentation files 
│   ├── report.pdf          # Project report
│   └── results             # Folder containing the video, gifs of the result
├── main                    # Source files of project
│   ├──main.c               # Main Source code.
│   ├──kconfig.projbuild    # Shows the menu of project configuration
│   ├──CMakeLists.txt       # To include source code files in esp-idf.
├── CmakeLists.txt          # To include components and main folder while executing
├── LICENSE
└── README.md

Getting Started

Prerequisites

Installation

Clone the repo

git clone https://github.com/RISHI27-dot/ESP32-chat-communication-over-wifi

Usage

Configuration

idf.py menuconfig

  • Chat history

    • Store command history in flash - to store the chat history ans use previous chats.

  • ESP-NOW Configuration

    • Send len - espnow packet lenght.

menuconfig image

Build

idf.py build

Flash and Monitor

  • Connect two esp32 through ports and run the following command on two seprate terminals.
  • The terminals will act as user interface.
idf.py -p /dev/ttyUSB0 flash monitor


idf.py -p /dev/ttyUSB1 flash monitor

Code

  • The input of chat is taken from the user through the console.
  • The chat data is sent to espnow and console task suspended,chat data is sent to other esp32 board.
  • Console task is resumed to take the next chat.
  • When the chat data is received by the other esp32 board it is printed to the console.

flowchart

Results and Demo

result gif

Future Work

  • Add a http web server chat interface.
  • Add encryption to the chat communication.

Contributors

Acknowledgements and Resources

License

Describe your License for your project.