Interactive Calculator with Keypad and LCD for Tiva-C Microcontroller

Table of Contents

• Overview
• Features
• Hardware Requirements
• Project Demo
• Getting Started
  • Hardware Setup
  • Software Compilation
  • Upload the Code
  • Power Up
• Usage
• Future Work
• Contributing
• Acknowledgments
• Contact

Overview

Welcome to the Interactive Calculator project, designed for the Tiva-C microcontroller platform. This project combines the power of a 4x4 keypad for user input and an alphanumeric LCD screen for real-time output, creating a dynamic and interactive arithmetic calculator. 🚀

Features

• Real-time Interaction: This calculator offers a user-friendly interface that allows users to input numbers and operations via the 4x4 keypad. The results are instantly displayed on the connected LCD screen, providing a seamless experience. ⌨️ 🔢

• Arithmetic Operations: Perform fundamental arithmetic operations such as addition (+), subtraction (-), multiplication (*), and division (/). The calculator follows the order of operations, with multiplication and division taking priority. ➕ ➖ ✖️ ➗

• Support for Integers and Decimals: The calculator caters to both integer and floating-point calculations, accommodating a wide range of mathematical tasks. 🔢 📈

• Error Handling: To ensure a smooth experience, the application includes error prevention mechanisms. These safeguards prevent issues like input overflow and division by zero. 🚫

• Keypad Interrupts: Keypad input is captured using interrupts, ensuring responsive and efficient interaction. Interrupts also enhance the energy efficiency of the system. 🔌 ⚡

• Precise Calculations: The calculator is designed to handle negative numbers and perform calculations with a high degree of precision, even for irrational numbers. This ensures accurate and reliable results for various mathematical scenarios. ♾️ ➖

Hardware Requirements

To run this project, you'll need the following hardware components:

• Tiva-C Series Microcontroller (TM4C123GH6PM): The project is designed to work with the Tiva-C microcontroller, specifically the TM4C123GH6PM model. This microcontroller provides the processing power and I/O capabilities needed for the calculator application.

• 4x4 Keypad: The keypad allows users to input numbers and operations for calculations.

• Alphanumeric LCD Screen: The LCD screen displays the entered input and the calculated results.

• Jumper Wires: Use jumper wires to establish connections between the microcontroller, keypad, and LCD screen.

• Breadboard (if required): A breadboard can be used to organize and manage the connections between components.

Project Demo

See the calculator in action! Below is a detailed demo video demonstrating the calculator's functionality.

Watch Demo Video

Getting Started

Follow these steps to get the project up and running on your Tiva-C microcontroller:

Hardware Setup

1. Connect the 4x4 keypad and the alphanumeric LCD screen to the designated ports and pins on the Tiva-C microcontroller.
2. Update the configuration files (HAL/KEYPAD/KEYPAD_config.h and HAL/LCD/LCD_config.h) to match your hardware connections.

Software Compilation

1. Choose your preferred integrated development environment (IDE) or toolchain. We recommend using Code Composer Studio (CCS).
2. Compile the provided source code.

Upload the Code

1. Use a USB Micro B to flash the compiled binary onto the Tiva-C microcontroller.

Power Up

1. Power on the Tiva-C microcontroller.
2. Make sure the keypad and LCD screen are properly connected and functional.

Usage

1. Press the numeric keys on the keypad to input numbers.
2. Use the +, -, *, and / keys to perform arithmetic operations.
3. Press the = key to calculate the result of the entered expression. The result will be displayed on the LCD screen.
4. To start a new calculation, press the R key to clear the LCD screen.

Future Work

Here are some potential improvements and features that could be added in the future:

• Advanced Functions: Expand the calculator's capabilities by incorporating trigonometric functions (sin, cos, tan) for more complex calculations. 📐
• Exponential Power: Enhance the calculator's functionality by adding support for exponentiation using the ** operator. ⬆️
• User Interface Enhancements: Consider improving the user interface with a graphical display, more intuitive keypad layout, and additional error handling. 🎨

Contributing

Contributions to this project are welcomed and appreciated! If you find bugs or want to enhance the application, please submit a pull request. For significant changes, consider opening an issue first to discuss the proposed modifications.

Acknowledgments

This project draws inspiration from educational resources provided by Egypt Make Electronics (EME). 👍

Contact

For inquiries, questions, or collaboration opportunities, feel free to reach out to e.roshdy97@gmail.com. 📧