STM32 || 7 Segment Display Interfacing || Bare Metal STM32F103 Tutorial || 0-9 Counter
0:00 Introduction
0:52 What is a 7-Segment Display?
2:02 Common Cathode vs Common Anode
3:30 Hardware Schematic Overview
4:49 How to Display Digits on 7-Segment
6:06 Digit Table and Hex Values
7:30 Programming Steps Overview
9:28 Opening the STM32 Reference Manual
11:03 Enabling GPIO Port A Clock
13:02 Creating a New STM32CubeIDE Project
17:06 Getting Register Addresses in STM32CubeIDE
18:26 Configuring GPIOA_CRL for Output
23:45 Understanding GPIOA_ODR for Data Output
26:17 Declaring Pointer Variables
29:13 Enabling Port A Clock in Code
30:30 Setting GPIO Mode Register
32:29 Sending Data to the 7-Segment Display
33:30 Generating the HEX File
34:20 Testing the Program in Proteus
34:26 Using an Array for Digits 0 to 9
35:30 Writing the For Loop for Counting
37:02 Creating the Delay Function
38:59 Final Simulation Output
39:15 Code Recap and Wrap-Up
In this tutorial, you will learn how to interface a 7-segment display with the STM32F103C8T6 (Blue Pill) using bare-metal programming. Instead of using libraries or HAL drivers, we directly control the STM32 GPIO registers to display digits from 0 to 9 on a common cathode 7-segment display.
This video demonstrates how to configure GPIOA registers, enable the RCC clock, and send the correct hexadecimal values to the GPIOA output data register (ODR) to control each segment of the display. By understanding the STM32 memory map, register addresses, and bitwise operations, you will gain deeper insight into embedded firmware development using ARM Cortex-M microcontrollers.
This project is part of our Embedded Systems (STM32 / ARM Cortex-M) tutorial series on STEM Concepts Lab, where we explore digital electronics fundamentals, circuit design, microcontroller programming, and IoT projects using STM32.
In this video you will learn:
• How a 7-segment display works
• Difference between common cathode and common anode displays
• How to configure GPIO registers in STM32
• How to enable GPIO clock using RCC registers
• How to send binary and hexadecimal data to GPIOA_ODR
• How to display digits 0 to 9 using a lookup table
• How to generate a HEX file in STM32CubeIDE
• How to test the design using Proteus simulation
This tutorial is ideal for students, beginners, and engineers learning ARM Cortex-M programming, embedded firmware development, digital electronics, and STM32 microcontroller projects.
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