Most FreeRTOS synchronisation tutorials treat semaphores and mutexes as two flavours of the same thing — a binary flag you acquire and release. That framing
Author: Chintan Gala
FreeRTOS Queues on STM32: Copy Semantics, the ISR Boundary, and the Anti-Patterns That Cause Silent Data Loss
Most FreeRTOS queue tutorials stop at xQueueSend and xQueueReceive — the two calls that were never the hard part. They show you a producer task,
Event-Driven Firmware Architecture
Most write-ups on event-driven firmware stop at the conceptual layer: events decouple modules, a queue holds them, a dispatcher routes them. That part is easy
Secure Boot and OTA Firmware Updates on ARM Cortex-M: A Production Guide to TrustZone, MCUboot, and Rollback Protection
Most “secure firmware update” tutorials stop at the part that was never hard. They show you the upload — image transfers over BLE or HTTP,
Hierarchical State Machines (HSM) in C for Telecom and RF Firmware
In telecom, RF, SATCOM, and industrial communication products, firmware coordinates dozens of subsystems that all run at once: PLL lock supervision, thermal protection, VSWR monitoring,
STM32 + ESP32/ESP8266 MQTT Tutorial with FreeRTOS: Build Production-Grade IoT Systems (2026 Guide)
Build production-grade IoT firmware using STM32, FreeRTOS, and MQTT with ESP32 as a Wi-Fi coprocessor. Covers task isolation, queue-driven design, UART DMA, reconnection state machines, security, and real production deployment patterns.
STM32 Low Power Modes Explained: Sleep, Stop & Standby for Battery-Powered IoT Devices
Learn how STM32 Sleep, Stop, and Standby modes work — with real HAL code, RTC wakeup design, FreeRTOS Tickless Idle, GPIO leakage fixes, and battery life estimation techniques for professional IoT firmware engineers.
Getting Started with Zephyr RTOS on STM32 — Complete Beginner to Professional Guide (2026)
Learn how to get started with Zephyr RTOS on STM32 in this complete 2026 guide — covering setup, Device Tree, Kconfig, BLE development, OTA with MCUboot, power management, and why Zephyr is the most important RTOS skill for embedded engineers today.
ISR Integration — ISR-safe APIs, the syscall-priority boundary, and deferred interrupt processing
Previously: Semaphore vs Mutex | Next: Heap Management Why ISRs Are Different — The One Rule You Cannot Break An Interrupt Service Routine runs outside
Running TinyML on STM32 with Edge Impulse — Complete Professional Guide
Artificial Intelligence is no longer limited to cloud servers, GPUs, or high-performance Linux systems. Modern microcontrollers are now capable of running optimized machine learning inference
