Sourabh Roy

Project 1: DCM Module Firmware Development (CAN-Based Data Logging System) Responsibilities & Achievements Project

Platform: Renesas S5D (MCU), ThreadX, C Language
Duration: ~6 months

• Developed firmware for a DCM (Data Communication Module) to process engine data received over CAN bus (PGNs)
• Implemented real-time data handling and logging mechanisms for:Daily logs
  Event-based logs
  Rule-based conditional logging
  
• Designed and integrated PGN parsing and validation logic, ensuring accurate extraction of engine parameters from CAN messages
• Utilized ThreadX features such as threads, timers, and synchronization mechanisms to manage concurrent data processing and logging tasks
• Implemented timeout and data validity checks to handle missing or stale CAN messages, improving system robustness
• Debugged and validated firmware on target hardware using serial logs and real-time monitoring of CAN data flow
• Followed structured development workflow using JIRA for task tracking and Azure DevOps for version control, code reviews, and pull request management
• Performed end-to-end testing on hardware, ensuring correct logging behavior under different runtime scenarios

2: Linux Device Driver Development for FPGA Throughput Measurement Responsibilities & Achievements

Platform: Lattice Semiconductor CrossLink-NX FPGA, Embedded Linux, C, Qt
Duration: ~6 months

• Developed a custom Linux Character Device Driver (LKM) to interface with FPGA memory regions for throughput evaluation
• Implemented standard file operations (open, read, write) to enable user-space interaction with hardware via device nodes
• Designed a user-space application using Qt to trigger read/write operations and visualize data transfer performance
• Enabled data exchange between user space and kernel space, facilitating controlled access to FPGA memory buffers
• Validated data flow and measured throughput by performing sequential read/write operations from user space
• Debugged driver behavior using kernel logs (dmesg) and basic instrumentation, ensuring correct communication with hardware
• Tested and verified end-to-end functionality from Qt application → device driver → FPGA → back to user space

Project 1: Firmware Over-The-Air (FOTA) System Responsibilities & Achievements Project

Platform: ARM Cortex-A53 (PontusML / Nikel), Tizen OS, Embedded Linux Duration: ~1 year

• Implemented a robust OTA update mechanism using RAUC and Mender for Embedded Linux-based smart monitor devices
• Designed and validated a dual A/B partition (2-slot) update strategy enabling fail-safe firmware upgrades with automatic rollback support
• Integrated OTA workflow with boot process and root filesystem switching, ensuring seamless updates without impacting active system operation
• Executed end-to-end OTA validation including update installation, reboot cycles, and fallback scenarios
• Debugged update and boot issues using kernel logs (dmesg) and boot-time logs, improving system reliability

2: Embedded Linux Board Bring-Up & Peripheral Integration Responsibilities & Achievements

Platform: ARM Cortex-A53 (PontusML / Nikel), Tizen OS / Embedded Linux Duration: ~1 year

• Performed board bring-up and hardware enablement for multiple customer-specific configurations
• Modified and maintained Device Tree (DTS) to configure and enable peripherals such as I2C, SPI, UART, GPIO, and display interfaces
• Built and deployed updated bootable Linux images (kernel + DTB + root filesystem) for hardware validation
• Verified peripheral functionality and ensured successful driver initialization using kernel logs (dmesg) and serial console output
• Diagnosed and resolved hardware-software integration issues in collaboration with cross-functional teams

RTOS-Based Industrial Data Acquisition Firmware (PIC16F877A) GSM/GPS Tracking Device Firmware (TIVA C Series) Linux-Based Multi-Sensor Integration (i.MX8 Mini)

• Developed firmware for industrial data acquisition using RTOS concepts, enabling reliable sensor data collection and processing
• Implemented task scheduling and peripheral interfacing for real-time monitoring applications
• Designed and developed firmware for a GSM/GPS-based tracking system, enabling real-time location acquisition and communication using NMEA format .
• Integrated communication modules and implemented data transmission over cellular network and AWS IOT THING .
• Developed Embedded Linux application for multi-sensor integration, handling data acquisition and processing from multiple interfaces
• Worked on hardware interfacing and user-space application development for sensor data handling