
Marco Thaller developed robust cross-platform MQTT capabilities and embedded UI infrastructure across the KDAB/KDUtils and slint-ui/slint repositories. He engineered a reusable MQTT client library in C++ with CMake-based build automation, focusing on secure defaults, non-blocking connections, and centralized logging to improve reliability and maintainability. In Rust, Marco modularized SafeUI for embedded and desktop targets, introducing ABI-safe pixel formats and unified event handling to streamline firmware integration. His work emphasized type safety, memory management, and platform resilience, delivering well-architected solutions that reduced configuration errors, improved test coverage, and enabled efficient feature delivery for both IoT and embedded UI applications.
March 2026: Delivered unified ISR-safe event handling for Slint firmware, introduced a destructor callback to safely manage user data, and clarified API/module boundaries for safety-critical firmware. Result: lower latency, fewer resource leaks, and simpler firmware integration with deterministic ISR behavior.
March 2026: Delivered unified ISR-safe event handling for Slint firmware, introduced a destructor callback to safely manage user data, and clarified API/module boundaries for safety-critical firmware. Result: lower latency, fewer resource leaks, and simpler firmware integration with deterministic ISR behavior.
February 2026: Concise monthly summary focused on delivering business value and technical achievements across the slint-ui/slint repository. Demonstrated cross-target portability, UI independence from Slint, and a streamlined desktop simulator through feature gating, ABI cleanups, and a unified rendering path. Technologies emphasized include Rust (std/no_std), ABI-safe pixel formats, feature flags, and minifb-based desktop rendering, aligning embedded and desktop workflows.
February 2026: Concise monthly summary focused on delivering business value and technical achievements across the slint-ui/slint repository. Demonstrated cross-target portability, UI independence from Slint, and a streamlined desktop simulator through feature gating, ABI cleanups, and a unified rendering path. Technologies emphasized include Rust (std/no_std), ABI-safe pixel formats, feature flags, and minifb-based desktop rendering, aligning embedded and desktop workflows.
January 2026 monthly summary for slint-ui/slint. Focused on expanding SafeUI pixel format support, modularizing SafeUI for maintainability, and hardening embedded compatibility. Key outcomes include new pixel formats (RGB565 and RGB888) with mutual exclusivity, a Bgra8888 module, centralized pixel format handling, and CMake-based feature toggles (including a default panic handler) for SafeUI; architectural split into a no_std core and a std simulator; and restored no_std compatibility with warnings resolved for embedded builds. These changes improve cross-target reliability, reduce configuration errors, and accelerate feature delivery for both embedded and desktop targets, delivering tangible business value. Key business value: clearer maintenance boundaries, fewer runtime configuration errors, better cross-target support, and faster onboarding for new contributors.
January 2026 monthly summary for slint-ui/slint. Focused on expanding SafeUI pixel format support, modularizing SafeUI for maintainability, and hardening embedded compatibility. Key outcomes include new pixel formats (RGB565 and RGB888) with mutual exclusivity, a Bgra8888 module, centralized pixel format handling, and CMake-based feature toggles (including a default panic handler) for SafeUI; architectural split into a no_std core and a std simulator; and restored no_std compatibility with warnings resolved for embedded builds. These changes improve cross-target reliability, reduce configuration errors, and accelerate feature delivery for both embedded and desktop targets, delivering tangible business value. Key business value: clearer maintenance boundaries, fewer runtime configuration errors, better cross-target support, and faster onboarding for new contributors.
March 2025 summary for KDAB/KDUtils: Focused on reliability, ergonomic improvements, and build efficiency. Key changes include: (1) MQTT Client: Do not use OS certificate store for unencrypted connections, improving connectivity reliability; (2) KDUtils Flags: Enable operator overloads for KDUtils::Flags with MqttManager::ClientOptions, reducing boilerplate and potential errors; (3) Build/Packaging: Download only the fakeit.hpp header for FakeIt integration on Linux, speeding up builds and avoiding unnecessary files. These actions deliver tangible business value by improving runtime stability, developer productivity, and CI efficiency.
March 2025 summary for KDAB/KDUtils: Focused on reliability, ergonomic improvements, and build efficiency. Key changes include: (1) MQTT Client: Do not use OS certificate store for unencrypted connections, improving connectivity reliability; (2) KDUtils Flags: Enable operator overloads for KDUtils::Flags with MqttManager::ClientOptions, reducing boilerplate and potential errors; (3) Build/Packaging: Download only the fakeit.hpp header for FakeIt integration on Linux, speeding up builds and avoiding unnecessary files. These actions deliver tangible business value by improving runtime stability, developer productivity, and CI efficiency.
February 2025 KDUtils monthly delivery focused on API safety, test coverage, and platform resilience. Key features delivered include: 1) MQTT client API improvements with QoS enum and precise types; port types tightened to uint16_t; payloads standardized as KDUtils::ByteArray and strings as const std::string& to improve type-safety; MQTT client example cleaned up by removing obsolete timestamp code and dead code. 2) Code quality and logging enhancements: clang-tidy warnings suppressed with targeted NOLINT comments and alignment of function calls to expected parameter types; simplified logging macros by relying on the library's function-name tracking. 3) Testing infrastructure and platform support: Linux unit tests for KDMqtt using FakeIt and doctest; updates to MosquittoLib and MqttClient to enable mocking and proper cleanup; testing enabled on macOS and Unix platforms. 4) MqttClient SubscriptionsRegistry memory safety fix: copies the topic string to a local variable before erasing from the registry to prevent access-after-free or undefined behavior. 5) Mosquitto version gating and TLS compatibility: compile-time checks for mosquitto version to ensure TLS feature compatibility; conditional compilation enabling Ubuntu 20.04 CI runner and runtime warnings for older mosquitto versions.
February 2025 KDUtils monthly delivery focused on API safety, test coverage, and platform resilience. Key features delivered include: 1) MQTT client API improvements with QoS enum and precise types; port types tightened to uint16_t; payloads standardized as KDUtils::ByteArray and strings as const std::string& to improve type-safety; MQTT client example cleaned up by removing obsolete timestamp code and dead code. 2) Code quality and logging enhancements: clang-tidy warnings suppressed with targeted NOLINT comments and alignment of function calls to expected parameter types; simplified logging macros by relying on the library's function-name tracking. 3) Testing infrastructure and platform support: Linux unit tests for KDMqtt using FakeIt and doctest; updates to MosquittoLib and MqttClient to enable mocking and proper cleanup; testing enabled on macOS and Unix platforms. 4) MqttClient SubscriptionsRegistry memory safety fix: copies the topic string to a local variable before erasing from the registry to prevent access-after-free or undefined behavior. 5) Mosquitto version gating and TLS compatibility: compile-time checks for mosquitto version to ensure TLS feature compatibility; conditional compilation enabling Ubuntu 20.04 CI runner and runtime warnings for older mosquitto versions.
January 2025 KDUtils development focused on delivering robust MQTT improvements, modernizing the client lifecycle, hardening TLS defaults, and improving observability through centralized logging. These changes reduce operational risk, improve performance, and streamline developer workflows, delivering measurable business value in security, reliability, and maintainability.
January 2025 KDUtils development focused on delivering robust MQTT improvements, modernizing the client lifecycle, hardening TLS defaults, and improving observability through centralized logging. These changes reduce operational risk, improve performance, and streamline developer workflows, delivering measurable business value in security, reliability, and maintainability.
November 2024: KDAB/KDUtils delivered cross‑platform MQTT capabilities and introduced a reusable MQTT client library (KDMqtt). CI now supports Mosquitto on Linux/Windows with macOS build support, enabling end‑to‑end MQTT testing across platforms. A new KDMqtt client library and usage examples, including symbol export configuration and updated documentation, were added to accelerate IoT integrations and feature delivery.
November 2024: KDAB/KDUtils delivered cross‑platform MQTT capabilities and introduced a reusable MQTT client library (KDMqtt). CI now supports Mosquitto on Linux/Windows with macOS build support, enabling end‑to‑end MQTT testing across platforms. A new KDMqtt client library and usage examples, including symbol export configuration and updated documentation, were added to accelerate IoT integrations and feature delivery.

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