How to Effectively Use Interrupts and NVIC in ARM Cortex-M Microcontrollers
How to Effectively Use Interrupts and NVIC in ARM Cortex-M Microcontrollers 
In this episode, we delve into the concepts of polling and interrupts in the context of microcontroller programming. Through practical examples using the STM32 microcontroller, we explore how to implement both internal and external interrupts, demonstrating the benefits of event-driven tasks over the traditional polling method. We also cover the ARM Cortex M architecture's NVIC (Nested Vectored Interrupt Controller), the differences between hardware and software interrupts, and the role of interrupt vector tables. Join us as we also touch on the advantages and challenges of using interrupts, culminating in real-world projects to solidify the learning experience.
- 00:00 Introduction to Polling and Interrupts
- 01:34 Understanding Interrupts in Depth
- 02:48 Internal vs External Interrupts
- 05:25 NVIC Controller and Interrupt Management
- 19:22 Interrupt Vector Table Explained
- 31:44 Practical Example with STM32 Microcontroller
- 32:37 Using Timer Interrupts for LED Blinking
- 33:24 Live Coding: Setting Up the STM32 Project
- 34:53 Configuring Timer and GPIO Pins
- 37:49 Writing the Interrupt Service Routine
- 41:30 Building and Running the Code
- 42:59 Creating a New Project for External Interrupts
- 43:57 Configuring External Interrupts and GPIO
- 47:49 Writing the External Interrupt Service Routine
- 52:06 Advantages and Disadvantages of Interrupts
- 56:32 Q&A and Future Sessions
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