espressif/esp-usb
Dec 2024 – Sep 2025
7 Months active
Languages Used
CC++CMake
Technical Skills
Embedded SystemsFile SystemsUSBDriver DevelopmentStorageC Programming
igor.masar
PROFILE
Igor.masar
Igor Masar developed and enhanced the esp-usb repository, focusing on USB mass storage, driver reliability, and hardware support for embedded systems. He implemented features such as a public API for formatting Mass Storage Class devices, explicit FIFO configuration via the Hardware Abstraction Layer, and ESP32-H4 microcontroller support, using C and C++ for robust, portable code. Igor improved performance by introducing write buffering and sector caching, and addressed cross-architecture portability in logging. He also refactored the USB PHY layer for better maintainability and migrated to internal APIs, demonstrating depth in driver development, refactoring, and embedded systems integration throughout his contributions.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
7Total
Bugs
2
Commits
7
Features
5
Lines of code
1,419
Activity Months7
Your Network
228 people
Work History
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025: Delivered ESP32-H4 support for esp-usb, expanding hardware compatibility and enabling Full-Speed operation with sensible defaults. Implemented MSC buffer size/range defaults, added ESP32-H4 target to idf_component.yml, and updated CHANGELOG to document the new support. The commit provides a production-ready extension with clear release notes and preparation for downstream testing.
1 Commits • 1 Features
Sep 1, 2025September 2025: Delivered ESP32-H4 support for esp-usb, expanding hardware compatibility and enabling Full-Speed operation with sensible defaults. Implemented MSC buffer size/range defaults, added ESP32-H4 target to idf_component.yml, and updated CHANGELOG to document the new support. The commit provides a production-ready extension with clear release notes and preparation for downstream testing.
September 2025
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025: Delivered a strategic USB PHY refactor and internal API migration for espressif/esp-usb, enabling better hardware control and unified code organization. Key changes include moving USB PHY source and header from usb/ to esp_hw_support, replacing public GPIO driver APIs with internal Low-Level (LL) APIs, removing deprecated PHY helper functions, and consolidating SoC-specific declarations. This work reduces API surface, enhances maintainability, and sets the stage for faster, more reliable USB feature delivery across supported platforms.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025: Delivered a strategic USB PHY refactor and internal API migration for espressif/esp-usb, enabling better hardware control and unified code organization. Key changes include moving USB PHY source and header from usb/ to esp_hw_support, replacing public GPIO driver APIs with internal Low-Level (LL) APIs, removing deprecated PHY helper functions, and consolidating SoC-specific declarations. This work reduces API surface, enhances maintainability, and sets the stage for faster, more reliable USB feature delivery across supported platforms.
May 2025
1 Commits
May 1, 2025May 2025 monthly summary focused on cross-architecture log formatting portability improvements in the USB host controller. A targeted fix was applied to esp-usb (USB host controller) to ensure log messages handling FIFO line sizes are correctly formatted on all architectures by replacing the generic %u with PRIu32, without changing runtime behavior.
1 Commits
May 1, 2025May 2025 monthly summary focused on cross-architecture log formatting portability improvements in the USB host controller. A targeted fix was applied to esp-usb (USB host controller) to ensure log messages handling FIFO line sizes are correctly formatted on all architectures by replacing the generic %u with PRIu32, without changing runtime behavior.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025: Implemented explicit FIFO configuration for the USB Host Controller Driver via HAL API in espressif/esp-usb, enabling manual sizing of RX, Non-Periodic TX, and Periodic TX FIFOs with a Kconfig-based default fallback. This replaces the prior bias-based sizing and lays the groundwork for tunable performance and stability across USB data paths. No major bugs were reported this month; ongoing work focuses on HAL-driven configurability and throughput optimizations.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025: Implemented explicit FIFO configuration for the USB Host Controller Driver via HAL API in espressif/esp-usb, enabling manual sizing of RX, Non-Periodic TX, and Periodic TX FIFOs with a Kconfig-based default fallback. This replaces the prior bias-based sizing and lays the groundwork for tunable performance and stability across USB data paths. No major bugs were reported this month; ongoing work focuses on HAL-driven configurability and throughput optimizations.
March 2025
1 Commits
Mar 1, 2025Monthly summary for 2025-03: Focused on correcting USB host error handling in espressif/esp-usb and aligning API return values with actual behavior. Delivered a bug fix for closing unopened devices and updated documentation to reflect the correct return values, reducing integration issues and improving developer trust. This work reinforces the USB host reliability and supports downstream application stability.
1 Commits
Mar 1, 2025Monthly summary for 2025-03: Focused on correcting USB host error handling in espressif/esp-usb and aligning API return values with actual behavior. Delivered a bug fix for closing unopened devices and updated documentation to reflect the correct return values, reducing integration issues and improving developer trust. This work reinforces the USB host reliability and supports downstream application stability.
March 2025
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025: Delivered TinyUSB MSC Driver Performance and Reliability Enhancements in espressif/esp-usb. Implemented caching of sector size and count to reduce redundant calls and added storage buffering for write operations, deferring actual writes to a dedicated task. This improves responsiveness and reliability of the USB Mass Storage interface, reduces CPU overhead, and enhances overall storage throughput in embedded USB workflows.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025: Delivered TinyUSB MSC Driver Performance and Reliability Enhancements in espressif/esp-usb. Implemented caching of sector size and count to reduce redundant calls and added storage buffering for write operations, deferring actual writes to a dedicated task. This improves responsiveness and reliability of the USB Mass Storage interface, reduces CPU overhead, and enhances overall storage throughput in embedded USB workflows.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024: Delivered the Mass Storage Class (MSC) host device formatting capability in the espressif/esp-usb repository, enabling a public API to format MSC devices and ensuring correct data removal during formatting. Implemented the public API function msc_host_vfs_format and added tests to verify that formatting reliably clears existing data, reducing manual steps and data remnants in MSC workflows. This work enhances device provisioning reliability and supports broader USB mass-storage use cases.
1 Commits • 1 Features
Dec 1, 2024December 2024: Delivered the Mass Storage Class (MSC) host device formatting capability in the espressif/esp-usb repository, enabling a public API to format MSC devices and ensuring correct data removal during formatting. Implemented the public API function msc_host_vfs_format and added tests to verify that formatting reliably clears existing data, reducing manual steps and data remnants in MSC workflows. This work enhances device provisioning reliability and supports broader USB mass-storage use cases.
December 2024
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Quality Metrics
Correctness92.8%
Maintainability94.2%
Architecture97.2%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++CMake
Technical Skills
C ProgrammingDebuggingDriver DevelopmentEmbedded SystemsFile SystemsHardware Abstraction Layer (HAL)Microcontroller DevelopmentPortabilityRefactoringStorageUSBUSB Protocol
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