Baremetal_Programming

STM32F401CCU6

Baremetal Programming

This repository contains low-level programming examples written for bare-metal environments, with a focus on microcontrollers and SoC platforms. The goal is to understand and control hardware directly without relying on operating systems or high-level abstractions.

🚀 Overview

This project is aimed at students, hobbyists, and engineers who want to:

• Learn how embedded systems work at the register and memory level.
• Interface with hardware peripherals without using any RTOS or OS.
• Write clean and efficient C code for microcontrollers such as STM32, ESP8266, and others.

🧠 Topics Covered

• GPIO control
• UART communication
• Timers and delay functions
• Interrupt handling
• Bare-metal blinking LED programs
• Direct register access and memory-mapped I/O

🧰 Tools & Requirements

• Toolchain: arm-none-eabi-gcc, make
• Platform: Ubuntu/Linux (for building and flashing)
• Debug/Flash Tools: ST-Link, OpenOCD, or equivalent
• Board Examples: STM32F401, ESP8266, or other Cortex-M microcontrollers

🛠️ How to Build

Install the required toolchain:

sudo apt update
sudo apt install gcc-arm-none-eabi make

To build a project:

cd stm32/blinky/
make

To flash (example using OpenOCD):

openocd -f interface/stlink.cfg -f target/stm32f4x.cfg -c "program main.elf verify reset exit"

    Adjust flashing commands based on your hardware.
📚 References

    ARM Cortex-M Programming Manual

    STM32 Reference Manuals

    Interrupts and low-level programming docs

    Manufacturer datasheets

🤝 Contributions

Pull requests and suggestions are welcome! If you'd like to add support for more boards or peripherals, feel free to fork and contribute.