Space-and-Satellite-Systems-UC-Davis/IntelliSat
Dec 2024 – Jul 2026
10 Months active
Languages Used
CXMLNoneC++
Technical Skills
C ProgrammingDriver DevelopmentEmbedded SystemsFirmware DevelopmentHardware InitializationMicrocontroller Configuration
HistidineDwarf
PROFILE
Histidinedwarf
Worked on the Space-and-Satellite-Systems-UC-Davis/IntelliSat repository, delivering embedded firmware features and reliability improvements for STM32-based systems. Developed robust hardware initialization routines, DMA-driven ADC and USART data acquisition, and RTC-backed persistent state management to support mission-critical satellite operations. Applied C and C++ with CMSIS, RTOS, and DMA configuration to enable real-time data handling, low-power operation, and automated testing. Enhanced test harnesses, streamlined build environments with Eclipse CDT and Clang, and maintained repository hygiene for maintainability. Addressed bugs in timing, bootstrapping, and inter-module communication, ensuring deterministic startup, reliable wake-up, and efficient data transfer across evolving embedded workflows.
Overall Statistics
Feature vs Bugs
73%Features
Repository Contributions
53Total
Bugs
6
Commits
53
Features
16
Lines of code
103,527
Activity Months10
Your Network
9 peopleShared Repositories
9
Work History
July 2026
1 Commits • 1 Features
Jul 1, 2026July 2026: Delivered USART DMA support for IntelliSat and standardized development workflows to improve build management on the STM32L476ZGTx. The update introduces DMA-driven USART communication to increase data throughput and reduce CPU load, while adding new development environment configurations (Clang and Eclipse CDT) to streamline the build process and onboarding for the team.
1 Commits • 1 Features
Jul 1, 2026July 2026: Delivered USART DMA support for IntelliSat and standardized development workflows to improve build management on the STM32L476ZGTx. The update introduces DMA-driven USART communication to increase data throughput and reduce CPU load, while adding new development environment configurations (Clang and Eclipse CDT) to streamline the build process and onboarding for the team.
July 2026
May 2026
5 Commits • 1 Features
May 1, 2026May 2026: Key features delivered, major bugs fixed, and overall impact for IntelliSat functionality, with a focus on bootstrapping reliability and persistent state across resets. 1) Key features delivered: - RTC storage with backup registers and ADCS enum integration to persist initialization and sensor status across resets; BKP test scaffolding added; tests and configuration updated to support finalization. - Multiple commits supporting the RTC feature: 03789967c3987fc30c62438ec6a568da9e420861, 95003e8fb58c7597b107a05689e89007d239e7ef, 521c4d74b8f369c97a868921da8ffece938a6e2f, 32b88e292b22c72907b45c26baeb52a8152c9367. 2) Major bugs fixed: - Bug fix: STM32 CMSIS project bootstrap and syntax correction to resolve an unclosed brace; added CMSIS-based project configuration to bootstrap embedded development. - Commit: 86093f34323cddf0bbf4667d285aab5e6d37ff8c. 3) Overall impact and accomplishments: - Stabilized boot process and ensured persistence of critical state across resets, reducing risk during deployment. - Enhanced testability with BKP scaffolding and updated test configuration, enabling faster validation and future iterations. - Established clear, maintainable code paths for RTC and ADCS-related state handling, supporting long-term data collection and reliability. 4) Technologies/skills demonstrated: - Embedded STM32 CMSIS usage, RTC and backup register management, BKP domain handling, ADCS enum integration, and test scaffolding. - Strong version-control practices with incremental commits and test-ready configurations.
May 2026
5 Commits • 1 Features
May 1, 2026May 2026: Key features delivered, major bugs fixed, and overall impact for IntelliSat functionality, with a focus on bootstrapping reliability and persistent state across resets. 1) Key features delivered: - RTC storage with backup registers and ADCS enum integration to persist initialization and sensor status across resets; BKP test scaffolding added; tests and configuration updated to support finalization. - Multiple commits supporting the RTC feature: 03789967c3987fc30c62438ec6a568da9e420861, 95003e8fb58c7597b107a05689e89007d239e7ef, 521c4d74b8f369c97a868921da8ffece938a6e2f, 32b88e292b22c72907b45c26baeb52a8152c9367. 2) Major bugs fixed: - Bug fix: STM32 CMSIS project bootstrap and syntax correction to resolve an unclosed brace; added CMSIS-based project configuration to bootstrap embedded development. - Commit: 86093f34323cddf0bbf4667d285aab5e6d37ff8c. 3) Overall impact and accomplishments: - Stabilized boot process and ensured persistence of critical state across resets, reducing risk during deployment. - Enhanced testability with BKP scaffolding and updated test configuration, enabling faster validation and future iterations. - Established clear, maintainable code paths for RTC and ADCS-related state handling, supporting long-term data collection and reliability. 4) Technologies/skills demonstrated: - Embedded STM32 CMSIS usage, RTC and backup register management, BKP domain handling, ADCS enum integration, and test scaffolding. - Strong version-control practices with incremental commits and test-ready configurations.
February 2026
1 Commits
Feb 1, 2026February 2026 — IntelliSat (Space-and-Satellite-Systems-UC-Davis) focused on reliability and maintainability within the MGT intercommunication testing framework. Delivered a bug fix that aligns MGT Intercommunication Test Function Names with their definitions, addressing mismatches that caused unreliable test results. No new features were released this month; emphasis on debugging, quality, and code hygiene.
1 Commits
Feb 1, 2026February 2026 — IntelliSat (Space-and-Satellite-Systems-UC-Davis) focused on reliability and maintainability within the MGT intercommunication testing framework. Delivered a bug fix that aligns MGT Intercommunication Test Function Names with their definitions, addressing mismatches that caused unreliable test results. No new features were released this month; emphasis on debugging, quality, and code hygiene.
February 2026
December 2025
2 Commits • 2 Features
Dec 1, 2025Concise monthly summary for 2025-12: IntelliSat delivered targeted test and hygiene improvements that enhance reliability, maintainability, and release readiness. Focused on test rigor for LPSleep and repository cleanliness, enabling faster iteration and reduced CI noise across the Space-and-Satellite-Systems-UC-Davis/IntelliSat project.
December 2025
2 Commits • 2 Features
Dec 1, 2025Concise monthly summary for 2025-12: IntelliSat delivered targeted test and hygiene improvements that enhance reliability, maintainability, and release readiness. Focused on test rigor for LPSleep and repository cleanliness, enabling faster iteration and reduced CI noise across the Space-and-Satellite-Systems-UC-Davis/IntelliSat project.
November 2025
8 Commits • 3 Features
Nov 1, 2025November 2025 – IntelliSat: Key features delivered include DMA robustness and testing improvements; Dynamic Clock and System Timing Improvements; and Maintenance and Cleanup for better documentation and artifact removal. Major bugs fixed include DMA transfer fixes per request and systick divider correction after LPRun, with main.c reverse adjustments. Overall impact: improved data transfer reliability, power efficiency, and code maintainability, enabling safer operations and faster onboarding. Technologies/skills demonstrated: embedded systems programming, DMA handling, low-power timing, testing automation, and thorough documentation.
8 Commits • 3 Features
Nov 1, 2025November 2025 – IntelliSat: Key features delivered include DMA robustness and testing improvements; Dynamic Clock and System Timing Improvements; and Maintenance and Cleanup for better documentation and artifact removal. Major bugs fixed include DMA transfer fixes per request and systick divider correction after LPRun, with main.c reverse adjustments. Overall impact: improved data transfer reliability, power efficiency, and code maintainability, enabling safer operations and faster onboarding. Technologies/skills demonstrated: embedded systems programming, DMA handling, low-power timing, testing automation, and thorough documentation.
November 2025
October 2025
14 Commits • 3 Features
Oct 1, 2025Month 2025-10 — IntelliSat: Key features delivered, major fixes, and business impact. Implemented RTC alarm subsystem enhancements with multi-callback support, dynamic scheduling, sequential task execution, robust insertion/deletion, and expanded test coverage; introduced DMA-ADC data acquisition with continuous DMA transfer, configuration, testing and stop control; updated test harness to run the IntelliSat app for end-to-end validation. Important bug fixes included enabling editing of ALARM A time after initial setAlarm() and addressing a previously hidden timeout, significantly improving reliability. Result: more deterministic mission operation, faster validation cycles, and stronger data integrity.
October 2025
14 Commits • 3 Features
Oct 1, 2025Month 2025-10 — IntelliSat: Key features delivered, major fixes, and business impact. Implemented RTC alarm subsystem enhancements with multi-callback support, dynamic scheduling, sequential task execution, robust insertion/deletion, and expanded test coverage; introduced DMA-ADC data acquisition with continuous DMA transfer, configuration, testing and stop control; updated test harness to run the IntelliSat app for end-to-end validation. Important bug fixes included enabling editing of ALARM A time after initial setAlarm() and addressing a previously hidden timeout, significantly improving reliability. Result: more deterministic mission operation, faster validation cycles, and stronger data integrity.
September 2025
4 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for IntelliSat (Space-and-Satellite-Systems-UC-Davis/IntelliSat). Delivered reliability improvements for low-power wake-up and RTC wake-up functionality, including removal of outdated RTC sleep logic to reduce maintenance burden and align with hardware behavior. The changes improve satellite uptime in sleep states and provide configurable wake-up behavior for mission-critical tasks.
4 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for IntelliSat (Space-and-Satellite-Systems-UC-Davis/IntelliSat). Delivered reliability improvements for low-power wake-up and RTC wake-up functionality, including removal of outdated RTC sleep logic to reduce maintenance burden and align with hardware behavior. The changes improve satellite uptime in sleep states and provide configurable wake-up behavior for mission-critical tasks.
September 2025
August 2025
5 Commits • 3 Features
Aug 1, 2025August 2025 monthly summary for Space-and-Satellite-Systems-UC-Davis/IntelliSat. Delivered critical STM32 build/config enhancements with CMSIS and ADC support, enabling accelerated embedded development and ADC workflows. Implemented continuous ADC3 data acquisition with DMA reconfiguration for SPI3 to support real-time testing. Fixed frequency handling in LPRun mode by switching references from core_MHz to core_Hz, ensuring deterministic timing at 1.25MHz. Improved sleep and RTC module documentation to reduce onboarding time and clarify behavior. These changes increase system reliability, real-time data capabilities, and maintainability, accelerating feature delivery and reducing integration risk.
August 2025
5 Commits • 3 Features
Aug 1, 2025August 2025 monthly summary for Space-and-Satellite-Systems-UC-Davis/IntelliSat. Delivered critical STM32 build/config enhancements with CMSIS and ADC support, enabling accelerated embedded development and ADC workflows. Implemented continuous ADC3 data acquisition with DMA reconfiguration for SPI3 to support real-time testing. Fixed frequency handling in LPRun mode by switching references from core_MHz to core_Hz, ensuring deterministic timing at 1.25MHz. Improved sleep and RTC module documentation to reduce onboarding time and clarify behavior. These changes increase system reliability, real-time data capabilities, and maintainability, accelerating feature delivery and reducing integration risk.
January 2025
3 Commits • 1 Features
Jan 1, 2025Concise monthly summary for 2025-01 focusing on IntelliSat (Space-and-Satellite-Systems-UC-Davis). Delivered a Test Harness and Basic Output Initialization to stabilize the main loop and enable reliable test runs. Work included un-commenting/replacing a test printf pathway, adding a basic test message, and adjusting test configuration to run the default/main scheduler/test cases. Also refactored peripheral initialization order and removed an unnecessary print to improve test reliability. Established a clear foundation for automated validation and ongoing testing in CI. Business value: faster feedback on core loop changes, reduced flaky test runs, and clearer diagnostics for mission-critical software. Technical impact: improved test harness stability, streamlined startup sequencing, and a maintainable base for future features.
3 Commits • 1 Features
Jan 1, 2025Concise monthly summary for 2025-01 focusing on IntelliSat (Space-and-Satellite-Systems-UC-Davis). Delivered a Test Harness and Basic Output Initialization to stabilize the main loop and enable reliable test runs. Work included un-commenting/replacing a test printf pathway, adding a basic test message, and adjusting test configuration to run the default/main scheduler/test cases. Also refactored peripheral initialization order and removed an unnecessary print to improve test reliability. Established a clear foundation for automated validation and ongoing testing in CI. Business value: faster feedback on core loop changes, reduced flaky test runs, and clearer diagnostics for mission-critical software. Technical impact: improved test harness stability, streamlined startup sequencing, and a maintainable base for future features.
January 2025
December 2024
10 Commits • 1 Features
Dec 1, 2024Monthly summary for 2024-12 covering Space-and-Satellite-Systems-UC-Davis/IntelliSat. The month focused on hardening startup reliability and establishing safe, predictable hardware initialization across peripherals through a timeout-based control framework. Key outcomes include the introduction of a centralized readiness check mechanism and a default timeout constant, enabling safer initialization for GPIO, SPI, UART, RTC, and related components. The work also included refactoring core initialization loops, aligning peripheral modules to the new framework, and restoring stability by reverting unintended changes to core_cm4.h. These changes reduce boot-time risk, improve uptime, and set a solid foundation for maintainability and future features.
December 2024
10 Commits • 1 Features
Dec 1, 2024Monthly summary for 2024-12 covering Space-and-Satellite-Systems-UC-Davis/IntelliSat. The month focused on hardening startup reliability and establishing safe, predictable hardware initialization across peripherals through a timeout-based control framework. Key outcomes include the introduction of a centralized readiness check mechanism and a default timeout constant, enabling safer initialization for GPIO, SPI, UART, RTC, and related components. The work also included refactoring core initialization loops, aligning peripheral modules to the new framework, and restoring stability by reverting unintended changes to core_cm4.h. These changes reduce boot-time risk, improve uptime, and set a solid foundation for maintainability and future features.
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Quality Metrics
Correctness86.0%
Maintainability84.2%
Architecture81.8%
Performance80.8%
AI Usage21.2%
Skills & Technologies
Programming Languages
CC++NoneXML
Technical Skills
ADC interfacingADC managementADC operationsBasic TestingCC ProgrammingC programmingC++ programmingCMSISDMA configurationDriver DevelopmentEclipse CDTEmbedded SystemsFirmware DevelopmentHardware Initialization
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