Balkis Diari

Developed and maintained firmware for hardware testing, device communication, and performance improvements:

• Developed and maintained firmware for hardware testing and flashing, ensuring reliability through updates and fixes.
• Diagnosed and resolved embedded system stability issues to improve performance.
• Created a Raspberry Pi-based logger to capture real-time device communication.
• Collaborated with hardware team to review and approve changes for firmware compatibility.
• Enhanced technical documentation for clarity and maintainability.
• Managed version control with Git/GitLab, performing code reviews and validating build artifacts for firmware flashing.

Keywords: C/C++, Python, Embedded Linux, Raspberry Pi 4, STM32G491, STM32F303, RS485, UART, USART, Debugging, Firmware Development, STM32CubeIDE, STM32CubeMX, STM32CubeProgrammer, Git/Gitlab, Agile Scrum, Scrum Methodology.

Contributed to the development, testing, validation, and maintenance of STM32 microcontroller drivers during the development phase:

• Developed HAL and LL drivers for STM32 internal peripherals (EXTI, PWR, DMA, HSEM).
• Developed functional and exhaustive verification tests for FPGA and silicon validation.
• Tested and validated internal peripherals for various STMicroelectronics products, generating detailed reports.
• Analyzed and debugged C code structures for test scenarios, understood test objectives and corrected errors to validate microcontrollers.
• Resolved Bugzilla tickets.
• Improved and measured code coverage using LDRA through static and dynamic analysis (LDRA Testbed).
• Ensured driver quality by applying MISRA C guidelines, CodeSonar static analysis, and CodeSpell checks.
• Used Git to manage repositories, clone product baselines, and submit changes via Gerrit.
• Integrated XML files for each internal peripheral into the Jenkins execution flow to support automation pipelines.
• Prepared quality documentation.
• Contributed to internal knowledge sharing across teams.
• Collaborated effectively in team while demonstrating strong autonomy and initiative.
• Conducted code reviews.

Keywords: STM32, Cortex-M33, Cortex-M85, Embedded C, C/C++, HAL/LL Drivers, EXTI, PWR, DMA, HSEM (Hardware Semaphore), IAR Embedded Workbench, STM32CubeMX, STM32CubeProgrammer, LDRA Testbed, Git, Gerrit, Cube 2.0

Firmware Update over TCP – Bootloader Implementation:

• Established reliable TCP connections to securely transfer firmware data.
• Programmed the TM4C129 microcontroller to act as a TCP client for receiving firmware images.
• Developed and tested client-server socket communication using C# (.NET) and C/C++.
• Designed and implemented a bootloader to support firmware updates over TCP/IP.
• Utilized Code Composer Studio and Visual Studio for development and debugging.

Keywords: C/C++, C#, .NET, Socket Programming, TM4C129, Bootloader, TCP/IP, Code Composer Studio, Visual Studio

Design and Development of an Electrostimulator using STM32:

• Designed and developed an electrostimulator system based on the STM32F429 Discovery board.
• Created user interface screens using TouchGFX for real-time interaction.
• Implemented button functionality and system logic using STM32CubeIDE and C/C++.
• Controlled output stimulation signals through the designed UI and verified real-time behavior.
• Tested and refined circuit performance to enhance product reliability and user experience.

Keywords: STM32F429 Discovery, TouchGFX, STM32CubeIDE, C/C++, Embedded UI, Signal Control

Exposure to the Full Design and Testing Cycle of Smart Meters:

• Observed and followed the complete development lifecycle of smart meters, from hardware design to final testing.
• Gained insight into various functional and validation tests applied to PCBs and meter counters.
• Familiarized with industry standard procedures and test environments for embedded energy systems.

Keywords: Smart Meters, Design Lifecycle, PCB Testing, Validation, Embedded Systems