RGB LED and Button Control System

This repository contains an embedded system project that controls an RGB LED, a button, and a vibrator motor. The system is designed to handle button presses, manage the RGB LED's state (off, static red, or fading RGB), and activate a vibration motor based on input from the user.

Project Structure

├── main.c
├── test.ino
├── include/
│   ├── system_types.h
│   ├── gpio_config.h
│   ├── system_init.h
│   ├── led_control.h
│   └── interrupts.h
└── src/
    ├── system_init.c
    ├── led_control.c
    └── interrupts.c

Features

• Button Handling: Detects short and long button presses, cycling through LED states or activating the vibrator motor.
• LED Control: Manages different LED states:
  • LED_OFF: Turns off the LEDs.
  • LED_RED_STATIC: Lights up the red LED.
  • LED_RGB_FADING: Smooth color transitions (RGB fading effect).
• Vibrator Activation: Triggered by a long button press and runs for 2 seconds.
• Power Management: Enters low-power mode when the system is idle (LED off and vibrator inactive).
• Watchdog Timer: Ensures the system stays responsive by refreshing the watchdog every 10 seconds.

File Descriptions

• main.c: The main loop handling LED updates, watchdog kicking, and transitioning the system to low-power mode.
• test.ino: Ports the project to ESP32 using the Arduino IDE to validate the logic and functionality in a different environment.
• include/system_types.h: Defines structures and enumerations such as LED_State and SystemStatus.
• include/gpio_config.h: Defines GPIO pin assignments and configuration methods.
• include/system_init.h: Declares functions for initializing peripherals like GPIO, PWM, RTC, and timers.
• include/led_control.h: Declares functions for controlling the RGB LED and managing different states.
• include/interrupts.h: Declares the interrupt service routines for the button, timers, and RTC.
• src/system_init.c: Implements the system initialization functions.
• src/led_control.c: Implements LED control functions, including color transitions for RGB fading.
• src/interrupts.c: Implements the button, timer, and RTC interrupt handlers.

How It Works

• A button press cycles through different LED states or activates the vibrator motor.
• Short press: Cycles between LED off, static red, and RGB fading.
• Long press: Activates the vibrator for 2 seconds.
• The system uses timers and interrupts to ensure efficient operation and enters low-power mode when idle.

Testing and Validation

• The test.ino file serves as a testbed for porting the functionality of this project to the ESP32 platform, confirming that the logic applied in the desing works correctly with at least one platform.