Embedded GPS Tracking System

A GPS-based location tracking system implemented on the Tiva C microcontroller. This project allows real-time tracking, navigation to predefined locations, nearby location detection, and even includes a fun treasure-hunt-style game — all displayed on an LCD using UART-based GPS data.

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📸 Project Preview

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🚀 Features

• Main Menu Navigation: Choose between three main functionalities:

  • Go To: Navigate to predefined locations like halls, library, mosque, etc.
  • Game: Play a treasure hunt game based on GPS coordinates.
  • Nearby: Detect and display the closest known location.

• Real-Time GPS Parsing: Parses GPS messages and calculates real-time distances.

• Dynamic LCD Interface: Provides interactive feedback via a 16x2 LCD display.

• User Interaction: Controlled via ADC-based selector and digital push buttons for confirming selections.

• Celebration Effects: Uses LED patterns to signal success in finding treasure or reaching destinations.

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🧠 System Architecture

The system uses a layered architecture:

• MCAL: Direct Tiva C hardware interfaces (GPIO, UART, ADC, SysTick)
• HAL: High-level modules (LCD, GPS, LED, Switch)
• APP: Application logic and main program (MainMenu, GoTo, Game, Nearby)

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🛠️ Hardware Used

• Tiva C LaunchPad (TM4C123GH6PM)
• GPS Module (UART interface)
• 16x2 LCD Display
• Push Buttons (ON/OFF and Confirm/Back)
• LEDs
• Potentiometer (used for menu selection via ADC)

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📁 Project Structure

├── Program.c                # Main application logic and core functions
├── Program.h                # Function declarations for program modules
├── MCAL/                    # Low-level microcontroller abstraction layer
│   ├── GPIO/                # GPIO configuration and control
│   ├── UART/                # UART initialization and communication
│   ├── ADC/                 # Analog-to-Digital Converter module
│   └── SYSTICK/             # System Tick timer module
├── HAL/                     # High-level abstraction drivers
│   ├── LCD/                 # LCD control functions
│   ├── GPS/                 # GPS message handling and parsing
│   ├── LED/                 # LED control and effects
│   └── SWITCH/              # Switch/button input handling
└── README.md                # Project documentation (this file)

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🔌 Circuit Schematic

⚙️ Setup Instructions

1. Clone this repository and import it into your IDE (e.g., Keil uVision).
2. Connect the hardware components as described.
3. Flash the code to the Tiva C board.
4. Power the board and enjoy the GPS tracking features via LCD and buttons.

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🎮 Game Mode Explanation

• The system randomly selects a hidden treasure location.
• The user has to physically move toward that location.
• Real-time distance updates are shown. Upon reaching the correct location, LEDs celebrate the success.

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📌 Notes

• All GPS data is received via UART5 and parsed in NMEA format.
• The system includes debounce handling for button presses.
• Distances are calculated using the Haversine formula.

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🙏 Acknowledgments

• Thanks to all contributors