8051 HAL (Hardware Abstraction Layer)

This repository is a modular, organized 8051 embedded development environment featuring reusable Hardware Abstraction Layer (HAL) modules, examples, and a helper script for project creation. It is designed for 8051 development with Makefile-based builds and easy-to-use structure.

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🔧 Hardware Abstraction Layer (HAL)

The HAL/ directory contains platform-agnostic drivers for various peripherals. These modules abstract the low-level hardware details, making the code portable and reusable.

Available HAL Modules

• GPIO – Basic GPIO abstraction
• UART – Serial communication
• SysTick – System tick timer for delays and scheduling
• Keypad – 4x4 keypad input support
• LCD16X2 – HD44780-based character LCD interface
• 7 Segment Display – Multi-digit display support
• Button – Debounced button input

You can include these HAL modules in your custom projects or use the existing examples as templates.

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🧪 Example Projects

The repository includes fully functional examples showcasing how to use different HAL modules:

Example Directory	Description	Example Output
blinky/	Basic GPIO toggling
button/	Reading button inputs
Keypad/	Using 4x4 keypad with HAL
LCD16X2/	Printing on a character LCD
7_Segment_Display/	Driving a 7-segment display
Sys_tick/	Demonstrates SysTick usage
Scheduler/	Scheduling 4 Tasks Keypad, Display, Led and Uart
Uart/	UART send/receive functionality

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📁 Project Structure

├── HAL/              # Hardware Abstraction Layer modules
├── Assets/           # Shared assets like images or schematics
├── Template/         # Barebones project structure for new projects
├── Create_Prj.sh     # Shell script to auto-generate new project
├── .vscode/          # VSCode-specific config for build and debug
├── README.md         # This file

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🛠️ Makefile Commands

All projects support make-based workflows:

Command	Description
make	Builds the project
make flash	Uploads the binary to the 8051 via USBasp
make clean	Removes all build artifacts

Make sure you have the required toolchain sdcc and Avrdude installed.

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⚙️ Create New Project

Use the Create_Prj.sh script to generate a new project:

./Create_Prj.sh <ProjectName>

This will:

• Create a new folder with the given name
• Setup a working Makefile

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📌 Requirements

• sdcc
• Avrdude
• Make
• VSCode (recommended, for .vscode/ integration)

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🧭 Getting Started

1. Clone the repo.
2. Run ./Create_Prj.sh MyProject
3. Add your source code inside MyProject/
4. Run make to build
5. Run make flash to upload