STM32F407 Bare-Metal Programming

This repository contains bare-metal programming examples for the STM32F407 microcontroller, developed without any external libraries (like STM32 HAL or CMSIS drivers). All peripherals are configured directly via register-level access.

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📦 Features

• Custom linker script
• Minimal startup file (written in assembly)
• Simple Makefile for build automation
• Clock and GPIO initialization at register level

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🧰 Hardware Used

1. Board: STM32F407 Black Board
2. Debugger Hardware: ST-Link/V2

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🛠 Software Used

1. Text Editor: Notepad++
2. Binary Loader: STM32CubeProgrammer
3. Make for Windows: Download Link
4. ARM GCC Toolchain: arm-none-eabi

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📁 Folder Structure

app/       - Application-level code
driver/    - Peripheral drivers (e.g., GPIO, RCC)
build/     - Output binaries (create manually before build)

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Build Instruction 
make           # Build the project
make clean     # Remove generated binaries