Firmware
The pipeline ran. Interrupts fired. DMA counters incremented. Every status register said the system was healthy. The buffers were empty. Three days of debugging, one register field.
Firmware
In the high-stakes world of embedded firmware development, "optimization" is usually the golden word. We optimize for speed, for power consumption, and perhaps most frantically, for memory. We count bytes like misers counting pennies, shaving off struct padding and squashing enums into uint8_t wherever possible. We analyze
Firmware
The build failed at 11 PM on a Thursday. Not from our code — from a missing pkg-config path. The CMake configure step for Mosquitto was resolving openssl.pc from /usr/lib/x86_64-linux-gnu instead of from the target sysroot. We'd seen this class of error before. Fix it,
From Raw Bayer to JPEG on STM32H5 in ~200ms When a Camera Sensor Captures an Image When a camera sensor captures an image, it does not directly produce a photograph. Instead, it generates a grid of raw intensity values arranged behind a color filter mosaic. On a desktop system, converting
Firmware
TL;DR: Firmware that passes physical hardware testing still ships with "Heisenberg bugs" that disappear during testing but appear disastrously under chaotic, real-world conditions. The Ghost strategy solves this by introducing an injection point at the seam between the Driver and Logic layers, feeding the Logic layer with
Firmware
In high-performance embedded systems, data integrity and deterministic timing are paramount. Controller Area Network (CAN) has long been the standard for reliable automotive and industrial communication. With the transition to CAN FD (Flexible Data-rate), we gained higher bandwidth and larger payloads. However, standard CAN FD, while robust for short control
Firmware
In the high-stakes world of embedded systems, there is often a vast, perilous chasm between a system that "functions" and one that performs. A prototype might capture an image, but if that simple act paralyzes the entire device for 200 milliseconds blocking network keep-alives, delaying sensor readings, and
Firmware
In embedded systems, we often celebrate the idea of doing more with less. Smaller MCUs, tighter power budgets, fewer components efficiency as a virtue. But once you start building real device fleets at the edge, that philosophy quickly meets its limits. At Hoomanely, our devices don’t just sample a
Firmware
When your camera produces data faster than your bus can consume it, buffer sizing alone won't save you. The real problem is state ownership—and the bars in your images prove it. The Problem: When Fast Producers Meet Slow Consumers In multi-stage embedded pipelines, timing mismatches are inevitable.
Firmware
Introduction: The Decision We Didn’t Question When we started building our edge systems, the filesystem was the easiest decision we made. It was familiar, stable, and came with decades of engineering behind it. Logs went into files. State was persisted as small blobs. Recovery was something the OS already