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Keypad-Controlled LED Blink System Using STM32

This repository contains the source code and documentation for a Keypad-Controlled LED Blink System using an STM32 microcontroller. The system allows users to control the blinking of LEDs based on the input from a 4x4 matrix keypad. This project demonstrates bare-metal programming and GPIO configuration using the STM32 Nucleo board.

Features

  • Keypad Input: 4x4 matrix keypad for user input.
  • LED Control: Up to 5 LEDs are controlled based on the keypad input.
  • Bare-Metal Programming: Implemented without using HAL libraries, focusing on direct register manipulation.
  • STM32 GPIO and Pull-up Resistors: Configured for stable and reliable keypad operation.

Components Used

  • STM32 Nucleo Board (STM32F410RB).
  • 4x4 Matrix Keypad.
  • 5 LEDs (connected to GPIO pins).
  • Breadboard and Jumper Wires.

Tools Used

  • STM32CubeIDE: For writing, compiling, and uploading the code.

Project Structure

  • Source Code: C code for keypad scanning, LED control, and system logic.
  • Project Photographs: Images showing the setup and working of the system.