Embedded Systems. STM32 Interrupt-Driven NEC decoder




STM32, ARM Cortex-M4, GPIO, EXTI, Timers, RCC, NVIC, Embedded C, Makefile, STM32F4Discovery, NEC protocol, Interrupts

What you will learn

Embedded Systems

STM32 MCU

NEC protocol

Timers/Counters

GPIO

External Interrupts

Nested Vectrored Interrupt Controller

Reset and Clock Control Unit

IR remote control decoding

Timing intervals measurement

MCU System Clock

Bare-Metal

Description

Hello and welcome to the STM32 Interrupt-Driven NEC Decoder embedded systems course.

With mixed hardware and programming-based approach, this course is created to show the practical application of the embedded systems and explain the basics of the STM32 microcontrollers at the same time.

This course provides an overview of the NEC protocol and a practical example of how an infrared remote control can control the LEDs on the STM32F4Discovery board. The course explains the necessary system configuration steps to enable the specific system peripherals and select their operation modes. The GPIO, an external interrupt and a timer compare mode are described in detail. These peripherals are the essential part of the NEC protocol decoder, which is the core part of the course.

The beginning of the course contains an explanation of how to install the GNU ARM toolchain for code compilation and the ST-LINK programmer for flashing the STM32F4Discovery board. There is a brief overview of the Discovery board as well.

By the end of the course, you will become familiar with the STM32 GPIO, the reset and clock control unit, external interrupts, timers and the NVIC. The important peripheral registers and their bits will be considered as well.

The NEC decoding firmware will be tested on the STM32F4Discovery board to prove that everything works as expected.

English
language

Content

Setting Up Your Development Environment
ST-LINK Software Installation
STMCubeMX Introduction
GNU ARM Toolchain Installation
Hardware Setup Overview
STM32F4DISCOVERY Board Overview
IR Receiver and LED Connections
NEC Protocol Timing Diagram Analysis
NEC Protocol Timing Diagram Analysis
NEC protocol knowledge test
MCU System Peripherals Initialization in STM32CubeMX
STM32 Peripherals Initialization
System Clock Configuration
GPIO Configuration
Timer’s Basic Configuration
Nested Vectored Interrupt Controller Introduction
Peripherals Initialization Quiz
NEC Decoding Algorithm and Firmware Architecture
Makefile Modifications for ST-LINK
Project Structure and Firmware Algorithm
Clock Configuration Functions
GPIO and External Interrupt Testing
Timer Initialization and Interrupt Testing
NEC Protocol Main Decoding Logic
Auxiliary NEC Decoder Functions
NEC Decoder Testing
NEC Decoder Firmware Quiz
Used Resources

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