STM32_Baremetal

Bare-metal firmware for STM32F401CCUx – Direct register-level embedded C programming without HAL abstraction layers.

STM32F401CCUx Bare-Metal Firmware 🔧

Welcome to my open-source STM32F401CCUx Bare-Metal Programming repository.
This project features direct register-level firmware development using Embedded C, without relying on STM32 HAL or CMSIS libraries.

🔍 About the Microcontroller

• STM32F401CCUx
• ARM Cortex-M4 @ 84 MHz
• 256 KB Flash, 64 KB SRAM
• 10 ADC channels, USARTs, Timers, I2C, SPI, PWM, etc.

🎯 Key Features Implemented

• GPIO configuration & control (LEDs, buttons)
• Timer initialization and PWM generation
• USART (UART) communication
• ADC reading and processing
• SysTick-based delay functions
• Interrupt configuration (EXTI/NVIC)
• RCC (clock control) and peripheral enable
• Startup code, vector table, and linker script

📦 Project Structure