01. Tools & Setup

Goal

Prepare the development environment for STM32 bare-metal programming.

Environment

• STM32F439ZI
• NUCLEO-F439ZI
• ARM Cortex-M4
• STM32CubeIDE
• arm-none-eabi-gcc
• ST-LINK / SWD

Toolchain

C Source
   ↓
Compiler
   ↓
Assembler
   ↓
Linker
   ↓
ELF / HEX
   ↓
MCU Flash

Basic Workflow

1. Create project
2. Configure target MCU
3. Write C code
4. Build
5. Flash
6. Debug

Key Files

• main.c
• Startup code
• Linker script
• CMSIS headers

Check

int main(void)
{
    while (1)
    {
    }
}

Build and debug the project successfully.

Key Point

Bare-metal development requires understanding not only C code, but also the compiler, linker, startup code, and MCU memory structure.