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
Firmware
Filesystems in embedded systems are often treated as implementation details—picked late, configured minimally, and rarely revisited. In reality, a filesystem becomes a long-lived contract between firmware, storage media, update mechanisms, and the data pipelines built on top of it. This article reframes embedded filesystems not as storage utilities, but
Firmware
Controller Area Network (CAN) is often introduced as a “simple” fieldbus—ID, DLC, payload, done. In real systems, that simplicity hides a deeper reality: CAN messages become long-lived contracts between firmware, hardware, gateways, and cloud pipelines. This article reframes CAN not as a transport, but as a shared language—where
Firmware
Most performance problems we’ve encountered in embedded systems didn’t come from weak hardware or poor algorithms. They came from decisions that felt harmless at the time extra logs during bring-up, convenient abstractions, background helpers added “just for safety.” None of these broke the system immediately. Instead, they slowly