ESP32 Custom Libraries Collection

A collection of custom libraries designed for ESP32 development with ESP-IDF framework. These libraries are optimized for IoT sensor projects and provide reliable, reusable components.

Libraries Overview

🌡️ DHT22 Sensor (dht22_sensor)

• Version: 1.0.0
• Description: Custom DHT22/AM2302 sensor library with bit-banging implementation
• Features: Temperature and humidity reading with robust timing control
• Use Case: Environmental monitoring projects

Method 1: Git

cd your_project_directory
mkdir dht22
git clone https://home.arcoa.eu:8413/esp32libs/dht22_sensor.git

Method 2: Manual Copy

1. Clone or download this repository
2. Copy the desired library folders to your project's lib/ directory
3. Include the headers in your main code

Method 3: PlatformIO Library

Each library contains a library.json file for PlatformIO compatibility.

Usage Example

#include "dht22_sensor.h"
#include "wifi_manager.h"
#include "mqtt_manager.h"
#include "led_manager.h"

void app_main(void) {
    // Initialize WiFi
    wifi_manager_config_t wifi_config = {
        .ssid = "YourSSID",
        .password = "YourPassword"
    };
    wifi_manager_init(&wifi_config);

    // Initialize MQTT
    mqtt_manager_config_t mqtt_config = {
        .broker_url = "mqtt://your-broker.com",
        .client_id = "esp32_sensor"
    };
    mqtt_manager_init(&mqtt_config);

    // Initialize DHT22 sensor
    dht22_init(GPIO_NUM_4);

    // Initialize LED for status indication
    led_manager_init(GPIO_NUM_8, 1);

    // Your application logic here
    while (1) {
        float temperature, humidity;
        if (dht22_read(&temperature, &humidity) == ESP_OK) {
            mqtt_publish_sensor_data(temperature, humidity);
            led_manager_set_color(0, 255, 0); // Green for success
        } else {
            led_manager_set_color(255, 0, 0); // Red for error
        }

        vTaskDelay(pdMS_TO_TICKS(30000)); // 30 second interval
    }
}

Library Dependencies

mqtt_manager → (none)

Configuration

Library includes configuration options through header files. Check individual library documentation for specific configuration parameters.

Common GPIO Assignments

• DHT22: Any GPIO pin (recommended: GPIO 4)
• LED Strip: Any GPIO pin (recommended: GPIO 8)
• Built-in LED: GPIO 2 (ESP32-C6)

Compatibility

• Framework: ESP-IDF
• Platforms: ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6
• Tested: ESP32-C6 DevKit
• License: MIT

Project Structure

MyESP32Libs/
├── README.md
├── CHANGELOG.md
├── dht22_sensor.c
├── dht22_sensor.h
├── README.md
├── CHANGELOG.md
├── library.json

Contributing

1. Fork this repository
2. Create a feature branch (git checkout -b feature/new-library)
3. Commit your changes (git commit -am 'Add new library')
4. Push to the branch (git push origin feature/new-library)
5. Create a Pull Request

Development Notes

⚠️ VSCode Include Errors: If you see cannot open source file "esp_err.h" errors in VSCode, this is expected for standalone library development. See DEVELOPMENT.md for solutions.

License

This project is licensed under the MIT License - see individual library.json files for details.

Support

For issues and questions:

• Create an issue in this repository
• Check individual library headers for API documentation
• Refer to ESP-IDF documentation for framework-specific details