Board Bring-Up Project

A microcontroller-based embedded system project featuring real-time monitoring, alarm management, and multi-language support using the PIC18F4550 microcontroller.

Project Overview

This project implements a comprehensive board bring-up system that combines multiple peripherals and sensors to create a monitoring and control system. The system features a state machine-based architecture with real-time clock functionality, analog sensor monitoring, alarm management, and a user-friendly LCD interface.

Features

Core Functionality

• Real-Time Clock (RTC): DS1307-based timekeeping with hour, minute, and second setting
• Analog Monitoring: ADC-based sensor reading with configurable alarm thresholds
• Alarm System: Dual-level alarm monitoring (high/low thresholds) with visual indicators
• Multi-Language Support: Interface available in 6 different languages
• State Machine Architecture: Robust navigation system between different operational modes

Hardware Peripherals

• LCD Display: 16-character display for system information and menus
• LED Control: Visual feedback and alarm indication system
• Button Interface: Navigation and parameter adjustment controls
• I2C Communication: For RTC and DAC communication
• PWM Output: Pulse width modulation for analog output control
• Serial Communication: UART interface for debugging and external communication
• DAC Output: MCP4725-based digital-to-analog conversion

System States

• Menu: Main navigation interface
• Alarm Configuration: Set high and low alarm thresholds
• Language Selection: Choose from 6 available languages
• Time Setting: Configure hours, minutes, and seconds
• Warning Mode: Alert state when alarm conditions are triggered

Hardware Requirements

Microcontroller

• PIC18F4550 microcontroller
• 20 MHz crystal oscillator
• Power supply and basic support components

Peripherals

• DS1307 Real-Time Clock module
• MCP4725 Digital-to-Analog Converter
• 16x2 LCD Display with HD44780 controller
• LEDs for status indication
• Push buttons for user interface
• Analog sensor (connected to ADC channel 0)

Development Tools

• MPLAB X IDE or compatible PIC development environment
• XC8 compiler for PIC18 family
• Programmer/debugger (PICkit, ICD, etc.)

Project Structure

Board_Bring-Up/
├── src/
│   ├── main.c              # Main application entry point
│   └── code/
│       ├── ADC.c           # Analog-to-Digital Converter functions
│       ├── button.c        # Button handling and debouncing
│       ├── DAC_MCP4725.c   # MCP4725 DAC communication
│       ├── delay.c         # Timing and delay functions
│       ├── event.c         # Event handling and system events
│       ├── I2C.c           # I2C communication protocol
│       ├── LCD.c           # LCD display control functions
│       ├── LED.c           # LED control and patterns
│       ├── output.c        # Output formatting and display
│       ├── PWM.c           # Pulse Width Modulation control
│       ├── RTC_DS1307.c    # Real-Time Clock functions
│       ├── serial.c        # UART serial communication
│       ├── stateMachine.c  # Main state machine implementation
│       ├── variables.c     # Global variable management
│       └── headers/        # Header files for all modules
├── hardware/               # KiCad PCB design files
├── diagrams/               # System architecture diagrams
└── docs/                   # Project documentation

Getting Started

Prerequisites

1. MPLAB X IDE installed
2. XC8 compiler for PIC18 family
3. PIC programmer/debugger
4. Assembled hardware board or prototyping setup

Building the Project

1. Clone this repository:

   git clone https://github.com/your-username/Board_Bring-Up.git
   cd Board_Bring-Up

2. Open the project in MPLAB X IDE

3. Configure the project settings:

   • Select PIC18F4550 as target device
   • Set XC8 as the compiler
   • Configure programmer/debugger

4. Build the project:

   • Click "Build" or use Ctrl+F11
   • Resolve any compilation errors

5. Program the microcontroller:

   • Connect your programmer
   • Click "Make and Program Device"

Hardware Setup

1. Connect the LCD display to PORTD and control pins (RA2, RA3)
2. Wire the DS1307 RTC to the I2C bus (RC3/SCL, RC4/SDA)
3. Connect analog sensor to AN0 (RA0)
4. Wire push buttons for navigation
5. Connect LEDs for status indication
6. Ensure proper power supply (5V for PIC18F4550)

Usage

Navigation

• Base Button: Return to main menu from any state
• Left/Right Buttons: Navigate between menu options
• Up/Down Buttons: Adjust values in configuration modes

Setting Alarms

1. Navigate to alarm configuration states
2. Use up/down buttons to adjust high and low thresholds
3. System will trigger warnings when sensor readings exceed limits

Time Configuration

1. Access time setting modes through menu navigation
2. Adjust hours, minutes, and seconds individually
3. Changes are automatically saved to RTC

Language Selection

• Navigate to language menu
• Choose from 6 available language options
• Interface will update to selected language

Configuration

System Parameters

Key configuration options in defines.h:

• FREQ: System frequency (20 MHz)
• NUMBER_LANGUAGES: Available languages (6)
• MAX_ADC_VALUE: Maximum ADC reading (1000)
• MIN_ADC_VALUE: Minimum ADC reading (0)

Pin Assignments

• LCD Data: PORTD (RD0-RD7)
• LCD Control: RA2 (RS), RA3 (EN)
• I2C: RC3 (SCL), RC4 (SDA)
• ADC Input: RA0 (AN0)
• LED Outputs: Configurable in LED.c

Additional Resources

• PIC18F4550 Datasheet
• DS1307 RTC Datasheet
• MCP4725 DAC Datasheet
• PCB design files are available in the hardware/ directory

License

This project is licensed under the terms specified in the LICENSE file.