STM32 Interrupt Tutorial (Bare Metal) | EXTI, NVIC, Full Code Example STM32F103
0:00 Introduction to STM32 Interrupts
0:35 What is an Interrupt? (Real-Life Explanation)
1:40 Polling vs Interrupts (Why Interrupts Matter)
3:10 STM32 Interrupt System Overview
4:25 Understanding EXTI (External Interrupt)
6:20 Understanding NVIC (Nested Vector Interrupt Controller)
8:10 Hardware Setup (Button + LED on STM32F103)
9:45 Enabling GPIO and AFIO Clocks
11:30 Configuring EXTI Line for Button Input
14:10 Setting Trigger (Rising/Falling Edge)
16:05 Configuring NVIC Interrupt
18:20 Writing the Interrupt Service Routine (ISR)
21:00 Complete Code Walkthrough (Bare Metal)
25:30 Building and Flashing the Code
27:10 Testing the Interrupt (Button → LED Response)
29:00 Common Mistakes and Debug Tips
30:30 Final Demo and Explanation
31:30 Conclusion and Next Steps
Learn how to implement STM32 interrupts using bare-metal programming in this step-by-step tutorial. In this video, you will understand how EXTI (External Interrupt) and NVIC (Nested Vector Interrupt Controller) work on the STM32F103 Blue Pill, without using any libraries.
We build a complete working project where a button press triggers an interrupt to control an LED, helping you understand real-time embedded systems behavior. This is perfect for beginners and intermediate learners looking to master ARM Cortex-M programming, register-level coding, and embedded firmware development.
🔧 What you’ll learn:
What interrupts are and why they are important
Difference between polling and interrupts
How EXTI works in STM32
NVIC configuration explained clearly
Register-level (bare-metal) programming
Full STM32F103 code walkthrough
Practical LED interrupt example
This tutorial is part of our Embedded Systems / STM32 (ARM Cortex-M) series, designed to take you from beginner to advanced level.
🚀 Perfect for:
Embedded systems beginners, engineering students, IoT developers, and anyone learning STM32, microcontrollers, and low-level programming.
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#Microcontroller #Interrupts #EXTI #NVIC #EmbeddedC
#FirmwareDevelopment #ElectronicsEngineering #IoT #EngineeringStudents
#LowLevelProgramming #STM32Tutorial #BluePill #RegisterProgramming
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