Smart Lock System (FreeRTOS-based STM32F407VG Project)

Project Overview

This project utilizes the STM32F407VG development board and FreeRTOS real-time operating system to implement a smart lock system, featuring multiple authentication methods including PIN code, RFID, and Bluetooth, while providing remote monitoring capabilities through ESP8266 integration with a web server.

Motivation

Traditional access control systems primarily rely on passwords or RFID cards, limiting convenience and flexibility. Our smart lock system addresses these issues by introducing:

• Bluetooth Remote Unlocking: Users can remotely control the lock via Android devices.
• Real-Time Logging: A website interface allowing administrators to monitor unlocking activities, including timestamps and methods used.

Hardware Components

• STM32 Development Board × 2
• RFID Reader Module
• Keypad Module
• LCD Module
• Android Device
• WiFi Module
• Buzzer
• Bluetooth Module

System Architecture

The system operates on an STM32F407 microcontroller with FreeRTOS, managing concurrent tasks effectively:

• User Interaction: LCD displays, keypad inputs, RFID authentication.
• Communication Management: Handling Wi-Fi and Bluetooth modules for remote control and data transmission.
• Security Management: Logic for PIN and password verification.

Project Files Description

• main.c:

  • Contains the primary logic of the smart lock system, including setting up, changing, and verifying user PIN/passwords.
  • Handles input/output operations related to keypad and LCD.
  • Manages the lock/unlock state based on user authentication.

• smart_lock.ioc:

  • Configuration file generated by STM32CubeMX.
  • Specifies hardware configurations, such as pin mappings, peripherals (GPIO, UART, SPI, etc.), and system clocks.
  • Includes FreeRTOS settings such as task priorities, stack sizes, and system timers.

• STM32F407VGTX_FLASH.ld:

  • Linker script configuring the memory layout for firmware running from FLASH memory.
  • Defines the memory sections and allocation for executable code, data, and interrupt vectors.

• STM32F407VGTX_RAM.ld:

  • Linker script for RAM-based execution, typically used for debugging purposes.
  • Similar to FLASH.ld but designed specifically to run code directly from RAM.

Getting Started

Follow these detailed steps to successfully set up, compile, and run the project:

Prerequisites:

• Install STM32CubeIDE.
• Ensure STM32CubeMX is installed (integrated within STM32CubeIDE).

Step-by-Step Guide:

1. Import the Project into STM32CubeIDE:

   • Launch STM32CubeIDE.
   • Click on File > Import.
   • Choose Existing Projects into Workspace.
   • Select the directory containing this project's files and complete the import process.

2. Configure Hardware Settings:

   • Open the file smart_lock by double-clicking it within STM32CubeIDE.
   • STM32CubeMX graphical interface will launch.
   • Verify and adjust pin mappings for your specific hardware.
   • Check peripheral settings (UART, GPIO, SPI, I2C, etc.) to ensure they match your setup.

3. Configure FreeRTOS Settings:

   • Within the STM32CubeMX interface, navigate to the Middleware > FreeRTOS settings.
   • Verify task configurations, priorities, and heap/stack sizes according to your application needs.

4. Generate Updated Code:

   • Click the gear icon (Generate Code) in STM32CubeMX to apply any configuration changes.

5. Compile the Project:

   • Return to STM32CubeIDE main window.
   • Build the project by clicking on Project > Build All or pressing Ctrl+B.

6. Flash the Firmware:

   • Connect your STM32F407 development board via an appropriate debug interface (e.g., ST-Link).
   • Select your project, then click Run > Debug or Run > Run As > STM32 Cortex-M C/C++ Application.
   • Follow IDE prompts to flash firmware onto the board.

7. Testing and Debugging:

   • Use the provided launch configurations (smart_lock Debug.launch, smart_lock.launch) for advanced debugging options.
   • Monitor the system behavior through the IDE debugging tools, console outputs, and connected peripherals.