ESPUI: Easily Create Web Interfaces for ESP32 and ESP8266

What is ESPUI

ESPUI is a simple web user interface library designed for ESP32 and ESP8266 devices. It allows users to easily create and manage the web interface of their devices without any knowledge of HTML, CSS, or JavaScript front-end development. The ESPUI library enables users to communicate and control their devices easily through a web browser, providing a convenient and intuitive operating interface.

Features of ESPUI

1. 1. Simple to Use: ESPUI provides a simple and understandable API, allowing users to easily create their own web interfaces without needing to master specialized front-end development knowledge.

2. 2. Flexible Customization: The ESPUI library allows users to customize the web interface according to their needs, including aspects like style, layout, and functionality.

3. 3. Lightweight: The ESPUI library is relatively small in size and highly efficient, capable of running on resource-constrained microcontrollers.

4. 4. Supports Various Controls: The ESPUI library provides a rich library of controls, including text boxes, buttons, sliders, etc., meeting users’ various needs for web interfaces.

   

Installation

ESPUI can be found on GitHub or installed using the Arduino Library Manager. To install ESPUI using the Arduino Library Manager, follow these steps:

1. 1. Open the Arduino IDE.

2. 2. Click on the “Sketch” menu, then select “Include Library” -> “Manage Libraries”.

3. 3. Type “ESPUI” in the search box, then click “Install”.

   

Usage

1. Create a Web Server

First, we need to create a web server. You can use the following code:

#include <ESPUI.h>

ESPUI ui;

void setup() {
  ui.begin();
}

void loop() {
  ui.loop();
}

This code creates a web server and stores it in the variable ui.

2. Add Web Pages

Next, we need to add web pages to the web server. You can use the following code:

#include <ESPUI.h>

ESPUI ui;

void setup() {
  ui.begin();

  // Create a web page named "index"
  ESPUI_Page page = ui.addPage("index");

  // Add a text element to the web page
  ESPUI_Text text = page.addText("Hello, world!");
}

void loop() {
  ui.loop();
}

This code adds a web page named "index" to the web server and adds a text element "Hello, world!" to that page.

3. Handle HTTP Requests

When a client sends an HTTP request to the web server, ESPUI calls the handleHTTPRequest function. We can use this function to handle HTTP requests. You can use the following code:

#include <ESPUI.h>

ESPUI ui;

void setup() {
  ui.begin();

  // Create a web page named "index"
  ESPUI_Page page = ui.addPage("index");

  // Add a text element to the web page
  ESPUI_Text text = page.addText("Hello, world!");
}

void handleHTTPRequest(ESPUI_HttpRequest request) {
  // Check the requested URI
  if (request.getURI() == "/hello") {
    // Send "Hello, world!" response
    request.sendResponse(200, "text/plain", "Hello, world!");
  } else {
    // Send 404 error response
    request.send404();
  }
}

void loop() {
  ui.loop();
}

This code defines a handleHTTPRequest function that is called when a client sends an HTTP request to the web server. The function checks the requested URI, and if the requested URI is "/hello", it sends a "Hello, world!" response; otherwise, it sends a 404 error response.

Applications of ESPUI

1. 1. IoT Device Control: The ESPUI library is suitable for remote control of IoT devices, allowing users to control various functions of the device through a web interface.

2. 2. Smart Home Systems: The ESPUI library can be used for control panels in smart home systems, allowing users to remotely control various devices in their homes via mobile phones, computers, etc.

3. 3. Embedded System Management: The ESPUI library can also be used for remote management of embedded systems, allowing users to configure and monitor embedded devices through a web interface.

   

Conclusion

ESPUI is a simple yet powerful web user interface library that provides convenient web interface control capabilities for ESP32 and ESP8266 devices. It helps users quickly create and customize their own web interfaces, making device operation more convenient and intuitive. The emergence of the ESPUI library will undoubtedly bring greater convenience and possibilities for the development and application of IoT devices.

Project Address: https://github.com/s00500/ESPUI

For more content, please follow: