This repository demonstrates a technique for clean register access in C using bitfields within a union. The core idea is to replace error-prone bit masking operations with a self-documenting structure that maps individual bits to named fields. The provided example shows how to define a union containing an 8-bit integer and a packed struct of single-bit fields, allowing direct access to register bits by name. The technique is particularly useful in embedded systems, device drivers, and any scenario requiring precise control over hardware registers. The codebase consists of a single C source file (bitPacking.c) that includes a reusable union definition and a simple main function to demonstrate its usage. A standard Makefile is provided for building the example, and the repository includes appropriate .gitignore settings to exclude build artifacts. The implementation relies only on the C standard library and a common GCC extension for packed structures, ensuring portability across many embedded toolchains. While the project is small and focused on illustrating a specific coding idiom, it highlights a valuable practice for improving code readability and maintainability in low-level programming. The union pattern shown can be easily adapted to different register layouts by modifying the bitfield names and comments, making it a reusable component for similar register access scenarios. The repository is maintained with recent commits and has some issue activity, indicating ongoing interest.