Audio Encryption and Decryption Project for TMDSLCDK6748

Project Overview

This project implements audio encryption and decryption using a TMS320C6748 DSP processor, with custom encryption algorithms and audio file conversion utilities.

Repository Structure

project-root/
│
├── src/
│   ├── main.c          # Core encryption algorithm implementation
│   └── Num_to_Wav.c    # Numeric array to WAV file conversion
└── README.md

Technical Specifications

• Processor: TMS320C6748 (32-bit DSP)
• Memory: DDR2 RAM (512 MB)
• Memory Address Range: 0xC0000000 to 0xE0000000

Key Components

Encryption and Decryption Module (main.c)

• Custom encryption algorithm implementation
• Supports audio data encryption/decryption

Conversion Utility (Num_to_Wav.c)

• Converts numeric arrays to WAV file format
• Supports .raw file input conversion
• Handles 32-bit word alignment

Development Environment

• Code Composer Studio (CCS)
• TI Code Generation Tools
• TMS320C6748 DSP Processor Development Kit: TMDSLCDKC6748

Memory Interface Workflow

Data Loading

1. Convert source file to binary (.raw)
2. Load binary to DDR2 RAM
   • Start Address: 0xC0000000
   • Ensure memory alignment
3. Use 32-bit pointer for data access

Memory Saving

1. Use CCS Save Memory function
2. Calculate word count: words = file_size_bytes ÷ 4
3. Save processed data to specified location

Contributors

• Vasanthi[https://github.com/VB-123]
• Arjun[https://github.com/officiallyaninja]