Collection of Embedded Systems Projects

This repository contains projects developed for the course "Προγραμματισμός Ενσωματωμένων Συστημάτων σε περιβάλλοντα Edge" (Embedded Systems Programming in Edge Environments).

Project Overview

This repository consists of three main projects that demonstrate different aspects of embedded systems programming:

1. HLS Project: High-Level Synthesis implementation of a Debayering filter for image processing
2. Arduino Project: Client service system using Arduino with buttons and LED indicators
3. Verilog Project: Hardware description language implementation of the client service system

HLS Project - Debayering Filter for Image Processing

Description

A High-Level Synthesis (HLS) project that implements a Debayering filter for image processing. The project demonstrates the conversion of a Bayer-patterned image to a full RGB image using both Python and C, with the C implementation optimized for hardware synthesis using HLS pragmas.

Workflow

• Step 1: Use the Jupyter notebook (transform_image.ipynb) to:
  • Convert an RGB image to a Bayer pattern and save it as a binary text file (image_8bit.txt).
  • (Optional) Reconstruct the RGB image in Python for verification.
• Step 2: The C implementation (debayering_filter.c and debayering_filter.h) reads the Bayer-patterned image, applies the Debayering algorithm, and reconstructs the RGB image. HLS pragmas are used to optimize the code for hardware synthesis.
• Step 3: The test program (debayering_filter_test.c) automates reading the input, running the filter, and saving the output RGB values to output.txt.
• Step 4: The notebook can also reconstruct and visualize the output image from the C implementation for comparison.

Features

• Implements a 3x3 neighborhood Debayering algorithm
• HLS pragmas for loop unrolling and pipelining to optimize for FPGA/ASIC synthesis
• Python scripts for data preparation and verification
• Supports 256x256 pixel images (configurable in code)
• Sample images (mountains.jpg, ravi.jpg) provided for testing

Arduino Project - Client Service System

Description

An Arduino-based client service system that manages a queue of clients using buttons and LED indicators. The system tracks the current client being served and the total number of clients in the queue.

Features

• Buttons: New Client, Done, Reset
• LED Indicators:
  • 7 LEDs for total clients count
  • 7 LEDs for current client number
  • 1 LED for "full" status
• Serial Output: Debug information via Serial Monitor

Hardware Requirements

• Arduino board
• 3 push buttons (connected to A0, A1, A2)
• 15 LEDs (7 for total clients, 7 for current client, 1 for full status)
• Appropriate resistors

Verilog Project - Client Service System

Description

Hardware description language implementation of the same client service system, designed for FPGA synthesis and simulation.

Files

• design.sv: SystemVerilog module implementing the client service logic
• testbench.sv: Comprehensive testbench for simulation and verification

Features

• Same functionality as the Arduino version
• Hardware-optimized design
• Comprehensive testbench with multiple test scenarios
• Support for up to 100 clients (configurable)