https://sudonull.com/uart-cli-for-debugging-mcu-firmware
UART-CLI simplifies diagnostics of embedded systems: GPIO, logs, tests without JTAG. Instructions for middle/senior dev. Master it for quick bug fixes.
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In this project
https://sudonull.com/uart-cli-for-microcontrollers-debug-commands
Implementation of UART CLI in MCU firmware: diagnostics of GPIO, I2C, CAN, memory, calculators. Debugging without IDE for middle/senior developers. Learn commands and examples.
https://sudonull.com/traffic-light-on-esp8266-and-ch32v003-code-and-schematic
Create a room traffic light on ESP8266 or CH32V003. Full GPIO code, timings, connection. Educational project for middle developers. Repeat in 30 min.
https://sudonull.com/bare-metal-firmware-stm32f103-without-cubemx
Create a minimal STM32F103C8T6 project: linker script, startup, GPIO, TIM2. Blinking LED and 1s delays. For middle/senior embedded developers.
https://sudonull.com/mcu-firmware-debugging-diagnostic-methods
Firmware Diagnostic Methods for STM32: CLI, HeartBeat LED, GDB, GPIO analysis. Practical code examples and tools for middle/senior developers. Master without violating timings.
From the web
General-purpose input/output - Wikipedia
https://en.wikipedia.org/wiki/General-purpose_input/output
A general-purpose input/output (GPIO) is an uncommitted digital signal pin on an integrated circuit or electronic circuit (e.g. MCUs / MPUs) board that can be used as an input or output, or both, and is controllable by software.
GPIO Explained: Modes, Registers & How It Works
https://nerdyelectronics.com/introduction-to-gpio/
See full list on nerdyelectronics.com
What Is GPIO, and What Can You Use It For? - How-To Geek
https://www.howtogeek.com/787928/what-is-gpio/
Apr 11, 2022 · At the most basic level, GPIO refers to a set of pins on your computer's mainboard or add-on card. These pins can send or receive electrical signals, but they aren't designed for any specific purpose.
Working with GPIOs — The Embedded Programmer's User Manual
https://masterembedded.com/chapter_12.html
General-Purpose Input/Output (GPIO) pins are essential components of any microcontroller and form the primary interface between the microcontroller and the external environment.
GPIO in Embedded Systems: Pins, Modes & Configuration Guide
https://jasttech.com/blogs/gpio-in-embedded-systems-complete-guide-to-pins-modes-configuration-and-applications
Aug 19, 2026 · Explore GPIO in embedded systems with a practical guide to pin modes, input/output configuration, pull-up and pull-down resistors, interrupts, alternate functions, applications, and best practices.
Master Understanding of GPIO: Beginner-Friendly Tutorial ...
https://embeddedprep.com/gpio-master-beginner-friendly-tutorial-2025/
GPIO stands for General Purpose Input/Output . It refers to programmable pins on a microcontroller, microprocessor, or SoC (System on Chip) that can be controlled through software to perform simple tasks like reading a sensor value or controlling an LED.
What Are GPIO Pins and How Do They Work (November 2026 ...
https://www.smashingrobotics.com/what-are-gpio-pins-and-how-do-they-work/
Aug 27, 2026 · GPIO pins are the bridge between your code and the real world. Learn what GPIO pins are, how they work, how to program them, and essential safety practices for Raspberry Pi, Arduino, and ESP32 projects.
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