7-Segment Display Controlled by Atmega328P Microcontroller

Overview

This project is designed to control a 7-segment display using an Atmega328P microcontroller. The C code utilizes the microcontroller's ports to display numbers on the display. Additionally, functionalities are included to interact with the display using buttons.

Components

• Atmega328P Microcontroller
• 7-Segment Display
• Two buttons for increment and decrement control

Code Description

• Libraries: Standard libraries necessary for the Atmega328P microcontroller and for managing delays are included.
• Constants and Macros: Constants like oscillator frequency and macros for bit manipulation are defined.
• Input and Output Ports: Input ports for buttons and output ports for display segments are defined.
• Numbers Array: An array is created to store segment patterns for each hexadecimal digit.
• Functions:
  • init_port(): Initializes ports as inputs or outputs as appropriate.
  • display_num(uint8_t output): Displays a number on the 7-segment display.
• Main Function (main()):
  • Initializes ports.
  • Within an infinite loop, it checks the state of buttons and displays a number on the 7-segment display based on user actions.

Usage

Users can interact with the display using the two buttons:

• Button 1: Increments the number displayed on the display.
• Button 2: Decrements the number displayed on the display.

Hardware Setup

Ensure the 7-segment display and buttons are correctly connected to the microcontroller according to the port definitions in the code.

Compilation and Execution

• Use a C compiler to compile the code and generate a binary file.
• Upload the binary file to the microcontroller using a compatible programmer.

Simulation in Proteus

The functionality of this code was simulated using Proteus simulation software. The simulation setup included the Atmega328P microcontroller, the 7-segment display, and the two control buttons.

The simulation demonstrated the following:

• Incrementing and decrementing numbers on the 7-segment display using the control buttons.
• Proper functioning of the display segments to represent different hexadecimal digits.

Above is a screenshot of the simulation in action. The display shows a number being incremented while the buttons are pressed accordingly.