Blink LED using esp idf


Welcome to the exciting world of ESP-IDF, the Espressif IoT Development Framework. If you're diving into the realm of Internet of Things (IoT) and looking to work with Espressif's ESP32 microcontroller, you're in for a treat. In this blog post, we'll guide you through a simple yet fundamental example: the classic "Blink" program. This straightforward project will help you set up your development environment and get your ESP32 board up and running in no time.

Prerequisites: Before we get started, make sure you have the following essentials:

  1. ESP-IDF installed on your development machine.

  2. An ESP32 development board.

  3. A USB cable for connecting your ESP32 to your computer.

Setting Up the ESP-IDF Environment: If you haven't installed ESP-IDF yet, head over to the official documentation (link) and follow the instructions for your operating system. Once installed, open a terminal and navigate to the ESP-IDF directory.

Creating a New Project: To start a new project, use the following commands:

This creates a new project named "blink_example."

Writing the Blink Code: Open the main.c file in the main directory of your project using your favorite text editor. Replace the existing code with the following Blink example:

This code configures GPIO pin 2 as an output and wait every secound (Lets check what is portTICK_PERIOD_MS).

Building and Flashing the Project: Now, it's time to build and flash the project to your ESP32. Use the following commands:

Replace /dev/ttyUSB0 with the appropriate port for your ESP32.

Running the Blink Example: Once the flashing process is complete, reset your ESP32 or power cycle it. You should now witness the on-board LED blinking at a one-second interval.

Conclusion: Congratulations! You've successfully set up an ESP-IDF project and implemented a simple Blink example. This serves as a solid foundation for more complex IoT projects using Espressif's powerful ESP32 microcontroller. Explore the extensive ESP-IDF documentation for further customization and enhancements to your projects. Happy coding!